Elliott Hughes | 2faa5f1 | 2012-01-30 14:42:07 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 16 | |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 17 | #include "class_linker.h" |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 18 | |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 19 | #include <algorithm> |
Brian Carlstrom | dbc0525 | 2011-09-09 01:59:59 -0700 | [diff] [blame] | 20 | #include <deque> |
Ian Rogers | cf7f191 | 2014-10-22 22:06:39 -0700 | [diff] [blame] | 21 | #include <iostream> |
Ian Rogers | 700a402 | 2014-05-19 16:49:03 -0700 | [diff] [blame] | 22 | #include <memory> |
Fred Shih | 381e4ca | 2014-08-25 17:24:27 -0700 | [diff] [blame] | 23 | #include <queue> |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 24 | #include <string> |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 25 | #include <tuple> |
Andreas Gampe | a696c0a | 2014-12-10 20:51:45 -0800 | [diff] [blame] | 26 | #include <unistd.h> |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 27 | #include <unordered_map> |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 28 | #include <utility> |
Elliott Hughes | 90a3369 | 2011-08-30 13:27:07 -0700 | [diff] [blame] | 29 | #include <vector> |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 30 | |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 31 | #include "art_field-inl.h" |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 32 | #include "art_method-inl.h" |
| 33 | #include "base/arena_allocator.h" |
Elliott Hughes | 1aa246d | 2012-12-13 09:29:36 -0800 | [diff] [blame] | 34 | #include "base/casts.h" |
Elliott Hughes | 07ed66b | 2012-12-12 18:34:25 -0800 | [diff] [blame] | 35 | #include "base/logging.h" |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 36 | #include "base/scoped_arena_containers.h" |
Narayan Kamath | d1c606f | 2014-06-09 16:50:19 +0100 | [diff] [blame] | 37 | #include "base/scoped_flock.h" |
Elliott Hughes | 1aa246d | 2012-12-13 09:29:36 -0800 | [diff] [blame] | 38 | #include "base/stl_util.h" |
Vladimir Marko | 80afd02 | 2015-05-19 18:08:00 +0100 | [diff] [blame] | 39 | #include "base/time_utils.h" |
Elliott Hughes | 7616005 | 2012-12-12 16:31:20 -0800 | [diff] [blame] | 40 | #include "base/unix_file/fd_file.h" |
Andreas Gampe | b9aec2c | 2015-04-23 22:23:47 -0700 | [diff] [blame] | 41 | #include "base/value_object.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 42 | #include "class_linker-inl.h" |
Mathieu Chartier | e4275c0 | 2015-08-06 15:34:15 -0700 | [diff] [blame] | 43 | #include "class_table-inl.h" |
Vladimir Marko | 2b5eaa2 | 2013-12-13 13:59:30 +0000 | [diff] [blame] | 44 | #include "compiler_callbacks.h" |
Elliott Hughes | 4740cdf | 2011-12-07 14:07:12 -0800 | [diff] [blame] | 45 | #include "debugger.h" |
Ian Rogers | 4f6ad8a | 2013-03-18 15:27:28 -0700 | [diff] [blame] | 46 | #include "dex_file-inl.h" |
Mathieu Chartier | e58991b | 2015-10-13 07:59:34 -0700 | [diff] [blame] | 47 | #include "entrypoints/entrypoint_utils.h" |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 48 | #include "entrypoints/runtime_asm_entrypoints.h" |
Hiroshi Yamauchi | 94f7b49 | 2014-07-22 18:08:23 -0700 | [diff] [blame] | 49 | #include "gc_root-inl.h" |
Ian Rogers | 1d54e73 | 2013-05-02 21:10:01 -0700 | [diff] [blame] | 50 | #include "gc/accounting/card_table-inl.h" |
| 51 | #include "gc/accounting/heap_bitmap.h" |
| 52 | #include "gc/heap.h" |
| 53 | #include "gc/space/image_space.h" |
Mathieu Chartier | e58991b | 2015-10-13 07:59:34 -0700 | [diff] [blame] | 54 | #include "handle_scope-inl.h" |
Elliott Hughes | cf4c6c4 | 2011-09-01 15:16:42 -0700 | [diff] [blame] | 55 | #include "intern_table.h" |
Ian Rogers | 64b6d14 | 2012-10-29 16:34:15 -0700 | [diff] [blame] | 56 | #include "interpreter/interpreter.h" |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 57 | #include "jit/jit.h" |
| 58 | #include "jit/jit_code_cache.h" |
Ian Rogers | 0571d35 | 2011-11-03 19:51:38 -0700 | [diff] [blame] | 59 | #include "leb128.h" |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 60 | #include "linear_alloc.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 61 | #include "mirror/class.h" |
| 62 | #include "mirror/class-inl.h" |
| 63 | #include "mirror/class_loader.h" |
Ian Rogers | 39ebcb8 | 2013-05-30 16:57:23 -0700 | [diff] [blame] | 64 | #include "mirror/dex_cache-inl.h" |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 65 | #include "mirror/field.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 66 | #include "mirror/iftable-inl.h" |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 67 | #include "mirror/method.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 68 | #include "mirror/object-inl.h" |
| 69 | #include "mirror/object_array-inl.h" |
| 70 | #include "mirror/proxy.h" |
Fred Shih | 4ee7a66 | 2014-07-11 09:59:27 -0700 | [diff] [blame] | 71 | #include "mirror/reference-inl.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 72 | #include "mirror/stack_trace_element.h" |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 73 | #include "mirror/string-inl.h" |
Mathieu Chartier | e58991b | 2015-10-13 07:59:34 -0700 | [diff] [blame] | 74 | #include "native/dalvik_system_DexFile.h" |
| 75 | #include "oat.h" |
| 76 | #include "oat_file.h" |
| 77 | #include "oat_file-inl.h" |
| 78 | #include "oat_file_assistant.h" |
| 79 | #include "oat_file_manager.h" |
| 80 | #include "object_lock.h" |
Brian Carlstrom | 5b332c8 | 2012-02-01 15:02:31 -0800 | [diff] [blame] | 81 | #include "os.h" |
Brian Carlstrom | 1f87008 | 2011-08-23 16:02:11 -0700 | [diff] [blame] | 82 | #include "runtime.h" |
Elliott Hughes | 4d0207c | 2011-10-03 19:14:34 -0700 | [diff] [blame] | 83 | #include "ScopedLocalRef.h" |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 84 | #include "scoped_thread_state_change.h" |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 85 | #include "thread-inl.h" |
Mathieu Chartier | 7778b88 | 2015-10-05 16:41:10 -0700 | [diff] [blame] | 86 | #include "trace.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 87 | #include "utils.h" |
Vladimir Marko | 05792b9 | 2015-08-03 11:56:49 +0100 | [diff] [blame] | 88 | #include "utils/dex_cache_arrays_layout-inl.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 89 | #include "verifier/method_verifier.h" |
Elliott Hughes | eac7667 | 2012-05-24 21:56:51 -0700 | [diff] [blame] | 90 | #include "well_known_classes.h" |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 91 | |
| 92 | namespace art { |
| 93 | |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 94 | static constexpr bool kSanityCheckObjects = kIsDebugBuild; |
| 95 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 96 | static void ThrowNoClassDefFoundError(const char* fmt, ...) |
| 97 | __attribute__((__format__(__printf__, 1, 2))) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 98 | SHARED_REQUIRES(Locks::mutator_lock_); |
Elliott Hughes | 0512f02 | 2012-03-15 22:10:52 -0700 | [diff] [blame] | 99 | static void ThrowNoClassDefFoundError(const char* fmt, ...) { |
Elliott Hughes | 4a2b417 | 2011-09-20 17:08:25 -0700 | [diff] [blame] | 100 | va_list args; |
| 101 | va_start(args, fmt); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 102 | Thread* self = Thread::Current(); |
Nicolas Geoffray | 0aa50ce | 2015-03-10 11:03:29 +0000 | [diff] [blame] | 103 | self->ThrowNewExceptionV("Ljava/lang/NoClassDefFoundError;", fmt, args); |
Ian Rogers | cab0101 | 2012-01-10 17:35:46 -0800 | [diff] [blame] | 104 | va_end(args); |
| 105 | } |
| 106 | |
Andreas Gampe | 99babb6 | 2015-11-02 16:20:00 -0800 | [diff] [blame^] | 107 | static bool HasInitWithString(Thread* self, ClassLinker* class_linker, const char* descriptor) |
| 108 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 109 | ArtMethod* method = self->GetCurrentMethod(nullptr); |
Andreas Gampe | bfdcdc1 | 2015-04-22 18:10:36 -0700 | [diff] [blame] | 110 | StackHandleScope<1> hs(self); |
| 111 | Handle<mirror::ClassLoader> class_loader(hs.NewHandle(method != nullptr ? |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 112 | method->GetDeclaringClass()->GetClassLoader() : nullptr)); |
Andreas Gampe | 99babb6 | 2015-11-02 16:20:00 -0800 | [diff] [blame^] | 113 | mirror::Class* exception_class = class_linker->FindClass(self, descriptor, class_loader); |
Andreas Gampe | bfdcdc1 | 2015-04-22 18:10:36 -0700 | [diff] [blame] | 114 | |
| 115 | if (exception_class == nullptr) { |
| 116 | // No exc class ~ no <init>-with-string. |
| 117 | CHECK(self->IsExceptionPending()); |
| 118 | self->ClearException(); |
| 119 | return false; |
| 120 | } |
| 121 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 122 | ArtMethod* exception_init_method = exception_class->FindDeclaredDirectMethod( |
Andreas Gampe | 99babb6 | 2015-11-02 16:20:00 -0800 | [diff] [blame^] | 123 | "<init>", "(Ljava/lang/String;)V", class_linker->GetImagePointerSize()); |
Andreas Gampe | bfdcdc1 | 2015-04-22 18:10:36 -0700 | [diff] [blame] | 124 | return exception_init_method != nullptr; |
| 125 | } |
| 126 | |
Andreas Gampe | 99babb6 | 2015-11-02 16:20:00 -0800 | [diff] [blame^] | 127 | // Helper for ThrowEarlierClassFailure. Throws the stored error. |
| 128 | static void HandleEarlierVerifyError(Thread* self, ClassLinker* class_linker, mirror::Class* c) |
| 129 | SHARED_REQUIRES(Locks::mutator_lock_) { |
| 130 | mirror::Object* obj = c->GetVerifyError(); |
| 131 | DCHECK(obj != nullptr); |
| 132 | self->AssertNoPendingException(); |
| 133 | if (obj->IsClass()) { |
| 134 | // Previous error has been stored as class. Create a new exception of that type. |
| 135 | |
| 136 | // It's possible the exception doesn't have a <init>(String). |
| 137 | std::string temp; |
| 138 | const char* descriptor = obj->AsClass()->GetDescriptor(&temp); |
| 139 | |
| 140 | if (HasInitWithString(self, class_linker, descriptor)) { |
| 141 | self->ThrowNewException(descriptor, PrettyDescriptor(c).c_str()); |
| 142 | } else { |
| 143 | self->ThrowNewException(descriptor, nullptr); |
| 144 | } |
| 145 | } else { |
| 146 | // Previous error has been stored as an instance. Just rethrow. |
| 147 | mirror::Class* throwable_class = |
| 148 | self->DecodeJObject(WellKnownClasses::java_lang_Throwable)->AsClass(); |
| 149 | mirror::Class* error_class = obj->GetClass(); |
| 150 | CHECK(throwable_class->IsAssignableFrom(error_class)); |
| 151 | self->SetException(obj->AsThrowable()); |
| 152 | } |
| 153 | self->AssertPendingException(); |
| 154 | } |
| 155 | |
Andreas Gampe | bfdcdc1 | 2015-04-22 18:10:36 -0700 | [diff] [blame] | 156 | void ClassLinker::ThrowEarlierClassFailure(mirror::Class* c) { |
Elliott Hughes | 5c59994 | 2012-06-13 16:45:05 -0700 | [diff] [blame] | 157 | // The class failed to initialize on a previous attempt, so we want to throw |
| 158 | // a NoClassDefFoundError (v2 2.17.5). The exception to this rule is if we |
| 159 | // failed in verification, in which case v2 5.4.1 says we need to re-throw |
| 160 | // the previous error. |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 161 | Runtime* const runtime = Runtime::Current(); |
| 162 | if (!runtime->IsAotCompiler()) { // Give info if this occurs at runtime. |
Andreas Gampe | 3d6b470 | 2015-09-21 08:35:52 -0700 | [diff] [blame] | 163 | std::string extra; |
Andreas Gampe | 99babb6 | 2015-11-02 16:20:00 -0800 | [diff] [blame^] | 164 | if (c->GetVerifyError() != nullptr) { |
| 165 | mirror::Class* descr_from = c->GetVerifyError()->IsClass() |
| 166 | ? c->GetVerifyError()->AsClass() |
| 167 | : c->GetVerifyError()->GetClass(); |
| 168 | extra = PrettyDescriptor(descr_from); |
Andreas Gampe | 3d6b470 | 2015-09-21 08:35:52 -0700 | [diff] [blame] | 169 | } |
| 170 | LOG(INFO) << "Rejecting re-init on previously-failed class " << PrettyClass(c) << ": " << extra; |
Ian Rogers | 87e552d | 2012-08-31 15:54:48 -0700 | [diff] [blame] | 171 | } |
Elliott Hughes | 4a2b417 | 2011-09-20 17:08:25 -0700 | [diff] [blame] | 172 | |
Elliott Hughes | 5c59994 | 2012-06-13 16:45:05 -0700 | [diff] [blame] | 173 | CHECK(c->IsErroneous()) << PrettyClass(c) << " " << c->GetStatus(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 174 | Thread* self = Thread::Current(); |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 175 | if (runtime->IsAotCompiler()) { |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 176 | // At compile time, accurate errors and NCDFE are disabled to speed compilation. |
| 177 | mirror::Throwable* pre_allocated = runtime->GetPreAllocatedNoClassDefFoundError(); |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 178 | self->SetException(pre_allocated); |
Elliott Hughes | 4a2b417 | 2011-09-20 17:08:25 -0700 | [diff] [blame] | 179 | } else { |
Andreas Gampe | 99babb6 | 2015-11-02 16:20:00 -0800 | [diff] [blame^] | 180 | if (c->GetVerifyError() != nullptr) { |
| 181 | HandleEarlierVerifyError(self, this, c); |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 182 | } else { |
Nicolas Geoffray | 0aa50ce | 2015-03-10 11:03:29 +0000 | [diff] [blame] | 183 | self->ThrowNewException("Ljava/lang/NoClassDefFoundError;", |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 184 | PrettyDescriptor(c).c_str()); |
| 185 | } |
Elliott Hughes | 4a2b417 | 2011-09-20 17:08:25 -0700 | [diff] [blame] | 186 | } |
| 187 | } |
| 188 | |
Brian Carlstrom | b23eab1 | 2014-10-08 17:55:21 -0700 | [diff] [blame] | 189 | static void VlogClassInitializationFailure(Handle<mirror::Class> klass) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 190 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Brian Carlstrom | b23eab1 | 2014-10-08 17:55:21 -0700 | [diff] [blame] | 191 | if (VLOG_IS_ON(class_linker)) { |
| 192 | std::string temp; |
| 193 | LOG(INFO) << "Failed to initialize class " << klass->GetDescriptor(&temp) << " from " |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 194 | << klass->GetLocation() << "\n" << Thread::Current()->GetException()->Dump(); |
Brian Carlstrom | b23eab1 | 2014-10-08 17:55:21 -0700 | [diff] [blame] | 195 | } |
| 196 | } |
| 197 | |
| 198 | static void WrapExceptionInInitializer(Handle<mirror::Class> klass) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 199 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Elliott Hughes | a4f9474 | 2012-05-29 16:28:38 -0700 | [diff] [blame] | 200 | Thread* self = Thread::Current(); |
| 201 | JNIEnv* env = self->GetJniEnv(); |
Elliott Hughes | 4d0207c | 2011-10-03 19:14:34 -0700 | [diff] [blame] | 202 | |
| 203 | ScopedLocalRef<jthrowable> cause(env, env->ExceptionOccurred()); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 204 | CHECK(cause.get() != nullptr); |
Elliott Hughes | 4d0207c | 2011-10-03 19:14:34 -0700 | [diff] [blame] | 205 | |
| 206 | env->ExceptionClear(); |
Elliott Hughes | a4f9474 | 2012-05-29 16:28:38 -0700 | [diff] [blame] | 207 | bool is_error = env->IsInstanceOf(cause.get(), WellKnownClasses::java_lang_Error); |
| 208 | env->Throw(cause.get()); |
Elliott Hughes | 4d0207c | 2011-10-03 19:14:34 -0700 | [diff] [blame] | 209 | |
Elliott Hughes | a4f9474 | 2012-05-29 16:28:38 -0700 | [diff] [blame] | 210 | // We only wrap non-Error exceptions; an Error can just be used as-is. |
| 211 | if (!is_error) { |
Nicolas Geoffray | 0aa50ce | 2015-03-10 11:03:29 +0000 | [diff] [blame] | 212 | self->ThrowNewWrappedException("Ljava/lang/ExceptionInInitializerError;", nullptr); |
Elliott Hughes | 4d0207c | 2011-10-03 19:14:34 -0700 | [diff] [blame] | 213 | } |
Brian Carlstrom | b23eab1 | 2014-10-08 17:55:21 -0700 | [diff] [blame] | 214 | VlogClassInitializationFailure(klass); |
Elliott Hughes | 4d0207c | 2011-10-03 19:14:34 -0700 | [diff] [blame] | 215 | } |
| 216 | |
Fred Shih | 381e4ca | 2014-08-25 17:24:27 -0700 | [diff] [blame] | 217 | // Gap between two fields in object layout. |
| 218 | struct FieldGap { |
| 219 | uint32_t start_offset; // The offset from the start of the object. |
| 220 | uint32_t size; // The gap size of 1, 2, or 4 bytes. |
| 221 | }; |
| 222 | struct FieldGapsComparator { |
| 223 | explicit FieldGapsComparator() { |
| 224 | } |
| 225 | bool operator() (const FieldGap& lhs, const FieldGap& rhs) |
| 226 | NO_THREAD_SAFETY_ANALYSIS { |
Andreas Gampe | f52857f | 2015-02-18 15:38:57 -0800 | [diff] [blame] | 227 | // Sort by gap size, largest first. Secondary sort by starting offset. |
Richard Uhler | fab6788 | 2015-07-13 17:00:35 -0700 | [diff] [blame] | 228 | // Note that the priority queue returns the largest element, so operator() |
| 229 | // should return true if lhs is less than rhs. |
| 230 | return lhs.size < rhs.size || (lhs.size == rhs.size && lhs.start_offset > rhs.start_offset); |
Fred Shih | 381e4ca | 2014-08-25 17:24:27 -0700 | [diff] [blame] | 231 | } |
| 232 | }; |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 233 | typedef std::priority_queue<FieldGap, std::vector<FieldGap>, FieldGapsComparator> FieldGaps; |
Fred Shih | 381e4ca | 2014-08-25 17:24:27 -0700 | [diff] [blame] | 234 | |
| 235 | // Adds largest aligned gaps to queue of gaps. |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 236 | static void AddFieldGap(uint32_t gap_start, uint32_t gap_end, FieldGaps* gaps) { |
Fred Shih | 381e4ca | 2014-08-25 17:24:27 -0700 | [diff] [blame] | 237 | DCHECK(gaps != nullptr); |
| 238 | |
| 239 | uint32_t current_offset = gap_start; |
| 240 | while (current_offset != gap_end) { |
| 241 | size_t remaining = gap_end - current_offset; |
| 242 | if (remaining >= sizeof(uint32_t) && IsAligned<4>(current_offset)) { |
| 243 | gaps->push(FieldGap {current_offset, sizeof(uint32_t)}); |
| 244 | current_offset += sizeof(uint32_t); |
| 245 | } else if (remaining >= sizeof(uint16_t) && IsAligned<2>(current_offset)) { |
| 246 | gaps->push(FieldGap {current_offset, sizeof(uint16_t)}); |
| 247 | current_offset += sizeof(uint16_t); |
| 248 | } else { |
| 249 | gaps->push(FieldGap {current_offset, sizeof(uint8_t)}); |
| 250 | current_offset += sizeof(uint8_t); |
| 251 | } |
| 252 | DCHECK_LE(current_offset, gap_end) << "Overran gap"; |
| 253 | } |
| 254 | } |
| 255 | // Shuffle fields forward, making use of gaps whenever possible. |
| 256 | template<int n> |
Vladimir Marko | 76649e8 | 2014-11-10 18:32:59 +0000 | [diff] [blame] | 257 | static void ShuffleForward(size_t* current_field_idx, |
Fred Shih | 381e4ca | 2014-08-25 17:24:27 -0700 | [diff] [blame] | 258 | MemberOffset* field_offset, |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 259 | std::deque<ArtField*>* grouped_and_sorted_fields, |
Fred Shih | 381e4ca | 2014-08-25 17:24:27 -0700 | [diff] [blame] | 260 | FieldGaps* gaps) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 261 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Fred Shih | 381e4ca | 2014-08-25 17:24:27 -0700 | [diff] [blame] | 262 | DCHECK(current_field_idx != nullptr); |
| 263 | DCHECK(grouped_and_sorted_fields != nullptr); |
Fred Shih | 381e4ca | 2014-08-25 17:24:27 -0700 | [diff] [blame] | 264 | DCHECK(gaps != nullptr); |
| 265 | DCHECK(field_offset != nullptr); |
| 266 | |
| 267 | DCHECK(IsPowerOfTwo(n)); |
| 268 | while (!grouped_and_sorted_fields->empty()) { |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 269 | ArtField* field = grouped_and_sorted_fields->front(); |
Fred Shih | 381e4ca | 2014-08-25 17:24:27 -0700 | [diff] [blame] | 270 | Primitive::Type type = field->GetTypeAsPrimitiveType(); |
| 271 | if (Primitive::ComponentSize(type) < n) { |
| 272 | break; |
| 273 | } |
| 274 | if (!IsAligned<n>(field_offset->Uint32Value())) { |
| 275 | MemberOffset old_offset = *field_offset; |
| 276 | *field_offset = MemberOffset(RoundUp(field_offset->Uint32Value(), n)); |
| 277 | AddFieldGap(old_offset.Uint32Value(), field_offset->Uint32Value(), gaps); |
| 278 | } |
| 279 | CHECK(type != Primitive::kPrimNot) << PrettyField(field); // should be primitive types |
| 280 | grouped_and_sorted_fields->pop_front(); |
Fred Shih | 381e4ca | 2014-08-25 17:24:27 -0700 | [diff] [blame] | 281 | if (!gaps->empty() && gaps->top().size >= n) { |
| 282 | FieldGap gap = gaps->top(); |
| 283 | gaps->pop(); |
Roland Levillain | 14d9057 | 2015-07-16 10:52:26 +0100 | [diff] [blame] | 284 | DCHECK_ALIGNED(gap.start_offset, n); |
Fred Shih | 381e4ca | 2014-08-25 17:24:27 -0700 | [diff] [blame] | 285 | field->SetOffset(MemberOffset(gap.start_offset)); |
| 286 | if (gap.size > n) { |
| 287 | AddFieldGap(gap.start_offset + n, gap.start_offset + gap.size, gaps); |
| 288 | } |
| 289 | } else { |
Roland Levillain | 14d9057 | 2015-07-16 10:52:26 +0100 | [diff] [blame] | 290 | DCHECK_ALIGNED(field_offset->Uint32Value(), n); |
Fred Shih | 381e4ca | 2014-08-25 17:24:27 -0700 | [diff] [blame] | 291 | field->SetOffset(*field_offset); |
| 292 | *field_offset = MemberOffset(field_offset->Uint32Value() + n); |
| 293 | } |
| 294 | ++(*current_field_idx); |
| 295 | } |
| 296 | } |
| 297 | |
Elliott Hughes | 4dd9b4d | 2011-12-12 18:29:24 -0800 | [diff] [blame] | 298 | ClassLinker::ClassLinker(InternTable* intern_table) |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 299 | // dex_lock_ is recursive as it may be used in stack dumping. |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 300 | : dex_lock_("ClassLinker dex lock", kDefaultMutexLevel), |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 301 | dex_cache_image_class_lookup_required_(false), |
| 302 | failed_dex_cache_class_lookups_(0), |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 303 | class_roots_(nullptr), |
| 304 | array_iftable_(nullptr), |
| 305 | find_array_class_cache_next_victim_(0), |
Elliott Hughes | cf4c6c4 | 2011-09-01 15:16:42 -0700 | [diff] [blame] | 306 | init_done_(false), |
Mathieu Chartier | 893263b | 2014-03-04 11:07:42 -0800 | [diff] [blame] | 307 | log_new_class_table_roots_(false), |
Jeff Hao | 0aba0ba | 2013-06-03 14:49:28 -0700 | [diff] [blame] | 308 | intern_table_(intern_table), |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 309 | quick_resolution_trampoline_(nullptr), |
Andreas Gampe | 2da8823 | 2014-02-27 12:26:20 -0800 | [diff] [blame] | 310 | quick_imt_conflict_trampoline_(nullptr), |
Vladimir Marko | 8a63057 | 2014-04-09 18:45:35 +0100 | [diff] [blame] | 311 | quick_generic_jni_trampoline_(nullptr), |
Mathieu Chartier | 2d72101 | 2014-11-10 11:08:06 -0800 | [diff] [blame] | 312 | quick_to_interpreter_bridge_trampoline_(nullptr), |
| 313 | image_pointer_size_(sizeof(void*)) { |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 314 | CHECK(intern_table_ != nullptr); |
Andreas Gampe | 8ac7595 | 2015-06-02 21:01:45 -0700 | [diff] [blame] | 315 | static_assert(kFindArrayCacheSize == arraysize(find_array_class_cache_), |
| 316 | "Array cache size wrong."); |
| 317 | std::fill_n(find_array_class_cache_, kFindArrayCacheSize, GcRoot<mirror::Class>(nullptr)); |
Brian Carlstrom | 9ea1cb1 | 2011-08-24 23:18:18 -0700 | [diff] [blame] | 318 | } |
Brian Carlstrom | a663ea5 | 2011-08-19 23:33:41 -0700 | [diff] [blame] | 319 | |
Richard Uhler | fbef44d | 2014-12-23 09:48:51 -0800 | [diff] [blame] | 320 | void ClassLinker::InitWithoutImage(std::vector<std::unique_ptr<const DexFile>> boot_class_path) { |
Brian Carlstrom | a004aa9 | 2012-02-08 18:05:09 -0800 | [diff] [blame] | 321 | VLOG(startup) << "ClassLinker::Init"; |
Brian Carlstrom | 0a5b14d | 2011-09-27 13:29:15 -0700 | [diff] [blame] | 322 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 323 | Thread* const self = Thread::Current(); |
| 324 | Runtime* const runtime = Runtime::Current(); |
| 325 | gc::Heap* const heap = runtime->GetHeap(); |
| 326 | |
| 327 | CHECK(!heap->HasImageSpace()) << "Runtime has image. We should use it."; |
Elliott Hughes | d8ddfd5 | 2011-08-15 14:32:53 -0700 | [diff] [blame] | 328 | CHECK(!init_done_); |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 329 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 330 | // Use the pointer size from the runtime since we are probably creating the image. |
| 331 | image_pointer_size_ = InstructionSetPointerSize(runtime->GetInstructionSet()); |
| 332 | |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 333 | // java_lang_Class comes first, it's needed for AllocClass |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 334 | // The GC can't handle an object with a null class since we can't get the size of this object. |
Mathieu Chartier | 1d27b34 | 2014-01-28 12:51:09 -0800 | [diff] [blame] | 335 | heap->IncrementDisableMovingGC(self); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 336 | StackHandleScope<64> hs(self); // 64 is picked arbitrarily. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 337 | auto class_class_size = mirror::Class::ClassClassSize(image_pointer_size_); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 338 | Handle<mirror::Class> java_lang_Class(hs.NewHandle(down_cast<mirror::Class*>( |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 339 | heap->AllocNonMovableObject<true>(self, nullptr, class_class_size, VoidFunctor())))); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 340 | CHECK(java_lang_Class.Get() != nullptr); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 341 | mirror::Class::SetClassClass(java_lang_Class.Get()); |
| 342 | java_lang_Class->SetClass(java_lang_Class.Get()); |
Hiroshi Yamauchi | 624468c | 2014-03-31 15:14:47 -0700 | [diff] [blame] | 343 | if (kUseBakerOrBrooksReadBarrier) { |
| 344 | java_lang_Class->AssertReadBarrierPointer(); |
Hiroshi Yamauchi | 9d04a20 | 2014-01-31 13:35:49 -0800 | [diff] [blame] | 345 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 346 | java_lang_Class->SetClassSize(class_class_size); |
Hiroshi Yamauchi | f0edfc3 | 2014-09-25 11:46:46 -0700 | [diff] [blame] | 347 | java_lang_Class->SetPrimitiveType(Primitive::kPrimNot); |
Mathieu Chartier | 1d27b34 | 2014-01-28 12:51:09 -0800 | [diff] [blame] | 348 | heap->DecrementDisableMovingGC(self); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 349 | // AllocClass(mirror::Class*) can now be used |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 350 | |
Elliott Hughes | 418d20f | 2011-09-22 14:00:39 -0700 | [diff] [blame] | 351 | // Class[] is used for reflection support. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 352 | auto class_array_class_size = mirror::ObjectArray<mirror::Class>::ClassSize(image_pointer_size_); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 353 | Handle<mirror::Class> class_array_class(hs.NewHandle( |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 354 | AllocClass(self, java_lang_Class.Get(), class_array_class_size))); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 355 | class_array_class->SetComponentType(java_lang_Class.Get()); |
Elliott Hughes | 418d20f | 2011-09-22 14:00:39 -0700 | [diff] [blame] | 356 | |
Ian Rogers | 23435d0 | 2012-09-24 11:23:12 -0700 | [diff] [blame] | 357 | // java_lang_Object comes next so that object_array_class can be created. |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 358 | Handle<mirror::Class> java_lang_Object(hs.NewHandle( |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 359 | AllocClass(self, java_lang_Class.Get(), mirror::Object::ClassSize(image_pointer_size_)))); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 360 | CHECK(java_lang_Object.Get() != nullptr); |
Ian Rogers | 23435d0 | 2012-09-24 11:23:12 -0700 | [diff] [blame] | 361 | // backfill Object as the super class of Class. |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 362 | java_lang_Class->SetSuperClass(java_lang_Object.Get()); |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 363 | mirror::Class::SetStatus(java_lang_Object, mirror::Class::kStatusLoaded, self); |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 364 | |
Mathieu Chartier | 673ed3d | 2015-08-28 14:56:43 -0700 | [diff] [blame] | 365 | java_lang_Object->SetObjectSize(sizeof(mirror::Object)); |
| 366 | runtime->SetSentinel(heap->AllocObject<true>(self, |
| 367 | java_lang_Object.Get(), |
| 368 | java_lang_Object->GetObjectSize(), |
| 369 | VoidFunctor())); |
| 370 | |
Ian Rogers | 23435d0 | 2012-09-24 11:23:12 -0700 | [diff] [blame] | 371 | // Object[] next to hold class roots. |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 372 | Handle<mirror::Class> object_array_class(hs.NewHandle( |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 373 | AllocClass(self, java_lang_Class.Get(), |
| 374 | mirror::ObjectArray<mirror::Object>::ClassSize(image_pointer_size_)))); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 375 | object_array_class->SetComponentType(java_lang_Object.Get()); |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 376 | |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 377 | // Setup the char (primitive) class to be used for char[]. |
| 378 | Handle<mirror::Class> char_class(hs.NewHandle( |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 379 | AllocClass(self, java_lang_Class.Get(), |
| 380 | mirror::Class::PrimitiveClassSize(image_pointer_size_)))); |
Hiroshi Yamauchi | f0edfc3 | 2014-09-25 11:46:46 -0700 | [diff] [blame] | 381 | // The primitive char class won't be initialized by |
| 382 | // InitializePrimitiveClass until line 459, but strings (and |
| 383 | // internal char arrays) will be allocated before that and the |
| 384 | // component size, which is computed from the primitive type, needs |
| 385 | // to be set here. |
| 386 | char_class->SetPrimitiveType(Primitive::kPrimChar); |
Brian Carlstrom | 5b8e4c8 | 2011-09-18 01:38:59 -0700 | [diff] [blame] | 387 | |
Ian Rogers | 23435d0 | 2012-09-24 11:23:12 -0700 | [diff] [blame] | 388 | // Setup the char[] class to be used for String. |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 389 | Handle<mirror::Class> char_array_class(hs.NewHandle( |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 390 | AllocClass(self, java_lang_Class.Get(), mirror::Array::ClassSize(image_pointer_size_)))); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 391 | char_array_class->SetComponentType(char_class.Get()); |
| 392 | mirror::CharArray::SetArrayClass(char_array_class.Get()); |
Brian Carlstrom | 9cff8e1 | 2011-08-18 16:47:29 -0700 | [diff] [blame] | 393 | |
Ian Rogers | 23435d0 | 2012-09-24 11:23:12 -0700 | [diff] [blame] | 394 | // Setup String. |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 395 | Handle<mirror::Class> java_lang_String(hs.NewHandle( |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 396 | AllocClass(self, java_lang_Class.Get(), mirror::String::ClassSize(image_pointer_size_)))); |
Mathieu Chartier | 52a7f5c | 2015-08-18 18:35:52 -0700 | [diff] [blame] | 397 | java_lang_String->SetStringClass(); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 398 | mirror::String::SetClass(java_lang_String.Get()); |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 399 | mirror::Class::SetStatus(java_lang_String, mirror::Class::kStatusResolved, self); |
Jesse Wilson | 1415074 | 2011-07-29 19:04:44 -0400 | [diff] [blame] | 400 | |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 401 | // Setup java.lang.ref.Reference. |
Fred Shih | 4ee7a66 | 2014-07-11 09:59:27 -0700 | [diff] [blame] | 402 | Handle<mirror::Class> java_lang_ref_Reference(hs.NewHandle( |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 403 | AllocClass(self, java_lang_Class.Get(), mirror::Reference::ClassSize(image_pointer_size_)))); |
Fred Shih | 4ee7a66 | 2014-07-11 09:59:27 -0700 | [diff] [blame] | 404 | mirror::Reference::SetClass(java_lang_ref_Reference.Get()); |
| 405 | java_lang_ref_Reference->SetObjectSize(mirror::Reference::InstanceSize()); |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 406 | mirror::Class::SetStatus(java_lang_ref_Reference, mirror::Class::kStatusResolved, self); |
Fred Shih | 4ee7a66 | 2014-07-11 09:59:27 -0700 | [diff] [blame] | 407 | |
Ian Rogers | 23435d0 | 2012-09-24 11:23:12 -0700 | [diff] [blame] | 408 | // Create storage for root classes, save away our work so far (requires descriptors). |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 409 | class_roots_ = GcRoot<mirror::ObjectArray<mirror::Class>>( |
Hiroshi Yamauchi | 94f7b49 | 2014-07-22 18:08:23 -0700 | [diff] [blame] | 410 | mirror::ObjectArray<mirror::Class>::Alloc(self, object_array_class.Get(), |
| 411 | kClassRootsMax)); |
| 412 | CHECK(!class_roots_.IsNull()); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 413 | SetClassRoot(kJavaLangClass, java_lang_Class.Get()); |
| 414 | SetClassRoot(kJavaLangObject, java_lang_Object.Get()); |
| 415 | SetClassRoot(kClassArrayClass, class_array_class.Get()); |
| 416 | SetClassRoot(kObjectArrayClass, object_array_class.Get()); |
| 417 | SetClassRoot(kCharArrayClass, char_array_class.Get()); |
| 418 | SetClassRoot(kJavaLangString, java_lang_String.Get()); |
Fred Shih | 4ee7a66 | 2014-07-11 09:59:27 -0700 | [diff] [blame] | 419 | SetClassRoot(kJavaLangRefReference, java_lang_ref_Reference.Get()); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 420 | |
| 421 | // Setup the primitive type classes. |
Ian Rogers | 50b35e2 | 2012-10-04 10:09:15 -0700 | [diff] [blame] | 422 | SetClassRoot(kPrimitiveBoolean, CreatePrimitiveClass(self, Primitive::kPrimBoolean)); |
| 423 | SetClassRoot(kPrimitiveByte, CreatePrimitiveClass(self, Primitive::kPrimByte)); |
| 424 | SetClassRoot(kPrimitiveShort, CreatePrimitiveClass(self, Primitive::kPrimShort)); |
| 425 | SetClassRoot(kPrimitiveInt, CreatePrimitiveClass(self, Primitive::kPrimInt)); |
| 426 | SetClassRoot(kPrimitiveLong, CreatePrimitiveClass(self, Primitive::kPrimLong)); |
| 427 | SetClassRoot(kPrimitiveFloat, CreatePrimitiveClass(self, Primitive::kPrimFloat)); |
| 428 | SetClassRoot(kPrimitiveDouble, CreatePrimitiveClass(self, Primitive::kPrimDouble)); |
| 429 | SetClassRoot(kPrimitiveVoid, CreatePrimitiveClass(self, Primitive::kPrimVoid)); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 430 | |
Ian Rogers | 23435d0 | 2012-09-24 11:23:12 -0700 | [diff] [blame] | 431 | // Create array interface entries to populate once we can load system classes. |
Hiroshi Yamauchi | 94f7b49 | 2014-07-22 18:08:23 -0700 | [diff] [blame] | 432 | array_iftable_ = GcRoot<mirror::IfTable>(AllocIfTable(self, 2)); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 433 | |
Ian Rogers | 23435d0 | 2012-09-24 11:23:12 -0700 | [diff] [blame] | 434 | // Create int array type for AllocDexCache (done in AppendToBootClassPath). |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 435 | Handle<mirror::Class> int_array_class(hs.NewHandle( |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 436 | AllocClass(self, java_lang_Class.Get(), mirror::Array::ClassSize(image_pointer_size_)))); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 437 | int_array_class->SetComponentType(GetClassRoot(kPrimitiveInt)); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 438 | mirror::IntArray::SetArrayClass(int_array_class.Get()); |
| 439 | SetClassRoot(kIntArrayClass, int_array_class.Get()); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 440 | |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 441 | // Create long array type for AllocDexCache (done in AppendToBootClassPath). |
| 442 | Handle<mirror::Class> long_array_class(hs.NewHandle( |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 443 | AllocClass(self, java_lang_Class.Get(), mirror::Array::ClassSize(image_pointer_size_)))); |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 444 | long_array_class->SetComponentType(GetClassRoot(kPrimitiveLong)); |
| 445 | mirror::LongArray::SetArrayClass(long_array_class.Get()); |
| 446 | SetClassRoot(kLongArrayClass, long_array_class.Get()); |
| 447 | |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame] | 448 | // now that these are registered, we can use AllocClass() and AllocObjectArray |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 449 | |
Ian Rogers | 52813c9 | 2012-10-11 11:50:38 -0700 | [diff] [blame] | 450 | // Set up DexCache. This cannot be done later since AppendToBootClassPath calls AllocDexCache. |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 451 | Handle<mirror::Class> java_lang_DexCache(hs.NewHandle( |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 452 | AllocClass(self, java_lang_Class.Get(), mirror::DexCache::ClassSize(image_pointer_size_)))); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 453 | SetClassRoot(kJavaLangDexCache, java_lang_DexCache.Get()); |
Vladimir Marko | 05792b9 | 2015-08-03 11:56:49 +0100 | [diff] [blame] | 454 | java_lang_DexCache->SetDexCacheClass(); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 455 | java_lang_DexCache->SetObjectSize(mirror::DexCache::InstanceSize()); |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 456 | mirror::Class::SetStatus(java_lang_DexCache, mirror::Class::kStatusResolved, self); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 457 | |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 458 | // Set up array classes for string, field, method |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 459 | Handle<mirror::Class> object_array_string(hs.NewHandle( |
| 460 | AllocClass(self, java_lang_Class.Get(), |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 461 | mirror::ObjectArray<mirror::String>::ClassSize(image_pointer_size_)))); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 462 | object_array_string->SetComponentType(java_lang_String.Get()); |
| 463 | SetClassRoot(kJavaLangStringArrayClass, object_array_string.Get()); |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 464 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 465 | // Create runtime resolution and imt conflict methods. |
| 466 | runtime->SetResolutionMethod(runtime->CreateResolutionMethod()); |
| 467 | runtime->SetImtConflictMethod(runtime->CreateImtConflictMethod()); |
| 468 | runtime->SetImtUnimplementedMethod(runtime->CreateImtConflictMethod()); |
Ian Rogers | 4445a7e | 2012-10-05 17:19:13 -0700 | [diff] [blame] | 469 | |
Ian Rogers | 23435d0 | 2012-09-24 11:23:12 -0700 | [diff] [blame] | 470 | // Setup boot_class_path_ and register class_path now that we can use AllocObjectArray to create |
| 471 | // DexCache instances. Needs to be after String, Field, Method arrays since AllocDexCache uses |
| 472 | // these roots. |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 473 | CHECK_NE(0U, boot_class_path.size()); |
Richard Uhler | fbef44d | 2014-12-23 09:48:51 -0800 | [diff] [blame] | 474 | for (auto& dex_file : boot_class_path) { |
| 475 | CHECK(dex_file.get() != nullptr); |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 476 | AppendToBootClassPath(self, *dex_file); |
Richard Uhler | fbef44d | 2014-12-23 09:48:51 -0800 | [diff] [blame] | 477 | opened_dex_files_.push_back(std::move(dex_file)); |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 478 | } |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 479 | |
| 480 | // now we can use FindSystemClass |
| 481 | |
Brian Carlstrom | 5b8e4c8 | 2011-09-18 01:38:59 -0700 | [diff] [blame] | 482 | // run char class through InitializePrimitiveClass to finish init |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 483 | InitializePrimitiveClass(char_class.Get(), Primitive::kPrimChar); |
| 484 | SetClassRoot(kPrimitiveChar, char_class.Get()); // needs descriptor |
Brian Carlstrom | 5b8e4c8 | 2011-09-18 01:38:59 -0700 | [diff] [blame] | 485 | |
Dmitry Petrochenko | f0972a4 | 2014-05-16 17:43:39 +0700 | [diff] [blame] | 486 | // Set up GenericJNI entrypoint. That is mainly a hack for common_compiler_test.h so that |
| 487 | // we do not need friend classes or a publicly exposed setter. |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 488 | quick_generic_jni_trampoline_ = GetQuickGenericJniStub(); |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 489 | if (!runtime->IsAotCompiler()) { |
Alex Light | 64ad14d | 2014-08-19 14:23:13 -0700 | [diff] [blame] | 490 | // We need to set up the generic trampolines since we don't have an image. |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 491 | quick_resolution_trampoline_ = GetQuickResolutionStub(); |
| 492 | quick_imt_conflict_trampoline_ = GetQuickImtConflictStub(); |
| 493 | quick_to_interpreter_bridge_trampoline_ = GetQuickToInterpreterBridge(); |
Alex Light | 64ad14d | 2014-08-19 14:23:13 -0700 | [diff] [blame] | 494 | } |
Dmitry Petrochenko | f0972a4 | 2014-05-16 17:43:39 +0700 | [diff] [blame] | 495 | |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 496 | // Object, String and DexCache need to be rerun through FindSystemClass to finish init |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 497 | mirror::Class::SetStatus(java_lang_Object, mirror::Class::kStatusNotReady, self); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 498 | CHECK_EQ(java_lang_Object.Get(), FindSystemClass(self, "Ljava/lang/Object;")); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 499 | CHECK_EQ(java_lang_Object->GetObjectSize(), mirror::Object::InstanceSize()); |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 500 | mirror::Class::SetStatus(java_lang_String, mirror::Class::kStatusNotReady, self); |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 501 | mirror::Class* String_class = FindSystemClass(self, "Ljava/lang/String;"); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 502 | if (java_lang_String.Get() != String_class) { |
| 503 | std::ostringstream os1, os2; |
| 504 | java_lang_String->DumpClass(os1, mirror::Class::kDumpClassFullDetail); |
| 505 | String_class->DumpClass(os2, mirror::Class::kDumpClassFullDetail); |
| 506 | LOG(FATAL) << os1.str() << "\n\n" << os2.str(); |
| 507 | } |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 508 | mirror::Class::SetStatus(java_lang_DexCache, mirror::Class::kStatusNotReady, self); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 509 | CHECK_EQ(java_lang_DexCache.Get(), FindSystemClass(self, "Ljava/lang/DexCache;")); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 510 | CHECK_EQ(java_lang_DexCache->GetObjectSize(), mirror::DexCache::InstanceSize()); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 511 | |
Ian Rogers | 23435d0 | 2012-09-24 11:23:12 -0700 | [diff] [blame] | 512 | // Setup the primitive array type classes - can't be done until Object has a vtable. |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 513 | SetClassRoot(kBooleanArrayClass, FindSystemClass(self, "[Z")); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 514 | mirror::BooleanArray::SetArrayClass(GetClassRoot(kBooleanArrayClass)); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 515 | |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 516 | SetClassRoot(kByteArrayClass, FindSystemClass(self, "[B")); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 517 | mirror::ByteArray::SetArrayClass(GetClassRoot(kByteArrayClass)); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 518 | |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 519 | CHECK_EQ(char_array_class.Get(), FindSystemClass(self, "[C")); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 520 | |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 521 | SetClassRoot(kShortArrayClass, FindSystemClass(self, "[S")); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 522 | mirror::ShortArray::SetArrayClass(GetClassRoot(kShortArrayClass)); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 523 | |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 524 | CHECK_EQ(int_array_class.Get(), FindSystemClass(self, "[I")); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 525 | |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 526 | CHECK_EQ(long_array_class.Get(), FindSystemClass(self, "[J")); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 527 | |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 528 | SetClassRoot(kFloatArrayClass, FindSystemClass(self, "[F")); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 529 | mirror::FloatArray::SetArrayClass(GetClassRoot(kFloatArrayClass)); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 530 | |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 531 | SetClassRoot(kDoubleArrayClass, FindSystemClass(self, "[D")); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 532 | mirror::DoubleArray::SetArrayClass(GetClassRoot(kDoubleArrayClass)); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 533 | |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 534 | CHECK_EQ(class_array_class.Get(), FindSystemClass(self, "[Ljava/lang/Class;")); |
Elliott Hughes | 418d20f | 2011-09-22 14:00:39 -0700 | [diff] [blame] | 535 | |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 536 | CHECK_EQ(object_array_class.Get(), FindSystemClass(self, "[Ljava/lang/Object;")); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 537 | |
Ian Rogers | 23435d0 | 2012-09-24 11:23:12 -0700 | [diff] [blame] | 538 | // Setup the single, global copy of "iftable". |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 539 | auto java_lang_Cloneable = hs.NewHandle(FindSystemClass(self, "Ljava/lang/Cloneable;")); |
| 540 | CHECK(java_lang_Cloneable.Get() != nullptr); |
| 541 | auto java_io_Serializable = hs.NewHandle(FindSystemClass(self, "Ljava/io/Serializable;")); |
| 542 | CHECK(java_io_Serializable.Get() != nullptr); |
Ian Rogers | 23435d0 | 2012-09-24 11:23:12 -0700 | [diff] [blame] | 543 | // We assume that Cloneable/Serializable don't have superinterfaces -- normally we'd have to |
| 544 | // crawl up and explicitly list all of the supers as well. |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 545 | array_iftable_.Read()->SetInterface(0, java_lang_Cloneable.Get()); |
| 546 | array_iftable_.Read()->SetInterface(1, java_io_Serializable.Get()); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 547 | |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 548 | // Sanity check Class[] and Object[]'s interfaces. GetDirectInterface may cause thread |
| 549 | // suspension. |
| 550 | CHECK_EQ(java_lang_Cloneable.Get(), |
| 551 | mirror::Class::GetDirectInterface(self, class_array_class, 0)); |
| 552 | CHECK_EQ(java_io_Serializable.Get(), |
| 553 | mirror::Class::GetDirectInterface(self, class_array_class, 1)); |
| 554 | CHECK_EQ(java_lang_Cloneable.Get(), |
| 555 | mirror::Class::GetDirectInterface(self, object_array_class, 0)); |
| 556 | CHECK_EQ(java_io_Serializable.Get(), |
| 557 | mirror::Class::GetDirectInterface(self, object_array_class, 1)); |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 558 | // Run Class, ArtField, and ArtMethod through FindSystemClass. This initializes their |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 559 | // dex_cache_ fields and register them in class_table_. |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 560 | CHECK_EQ(java_lang_Class.Get(), FindSystemClass(self, "Ljava/lang/Class;")); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 561 | |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 562 | CHECK_EQ(object_array_string.Get(), |
| 563 | FindSystemClass(self, GetClassRootDescriptor(kJavaLangStringArrayClass))); |
Brian Carlstrom | 1f87008 | 2011-08-23 16:02:11 -0700 | [diff] [blame] | 564 | |
Ian Rogers | 23435d0 | 2012-09-24 11:23:12 -0700 | [diff] [blame] | 565 | // End of special init trickery, subsequent classes may be loaded via FindSystemClass. |
Ian Rogers | 466bb25 | 2011-10-14 03:29:56 -0700 | [diff] [blame] | 566 | |
Ian Rogers | 23435d0 | 2012-09-24 11:23:12 -0700 | [diff] [blame] | 567 | // Create java.lang.reflect.Proxy root. |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 568 | SetClassRoot(kJavaLangReflectProxy, FindSystemClass(self, "Ljava/lang/reflect/Proxy;")); |
Ian Rogers | 466bb25 | 2011-10-14 03:29:56 -0700 | [diff] [blame] | 569 | |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 570 | // Create java.lang.reflect.Field.class root. |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 571 | auto* class_root = FindSystemClass(self, "Ljava/lang/reflect/Field;"); |
| 572 | CHECK(class_root != nullptr); |
| 573 | SetClassRoot(kJavaLangReflectField, class_root); |
| 574 | mirror::Field::SetClass(class_root); |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 575 | |
| 576 | // Create java.lang.reflect.Field array root. |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 577 | class_root = FindSystemClass(self, "[Ljava/lang/reflect/Field;"); |
| 578 | CHECK(class_root != nullptr); |
| 579 | SetClassRoot(kJavaLangReflectFieldArrayClass, class_root); |
| 580 | mirror::Field::SetArrayClass(class_root); |
| 581 | |
| 582 | // Create java.lang.reflect.Constructor.class root and array root. |
| 583 | class_root = FindSystemClass(self, "Ljava/lang/reflect/Constructor;"); |
| 584 | CHECK(class_root != nullptr); |
| 585 | SetClassRoot(kJavaLangReflectConstructor, class_root); |
| 586 | mirror::Constructor::SetClass(class_root); |
| 587 | class_root = FindSystemClass(self, "[Ljava/lang/reflect/Constructor;"); |
| 588 | CHECK(class_root != nullptr); |
| 589 | SetClassRoot(kJavaLangReflectConstructorArrayClass, class_root); |
| 590 | mirror::Constructor::SetArrayClass(class_root); |
| 591 | |
| 592 | // Create java.lang.reflect.Method.class root and array root. |
| 593 | class_root = FindSystemClass(self, "Ljava/lang/reflect/Method;"); |
| 594 | CHECK(class_root != nullptr); |
| 595 | SetClassRoot(kJavaLangReflectMethod, class_root); |
| 596 | mirror::Method::SetClass(class_root); |
| 597 | class_root = FindSystemClass(self, "[Ljava/lang/reflect/Method;"); |
| 598 | CHECK(class_root != nullptr); |
| 599 | SetClassRoot(kJavaLangReflectMethodArrayClass, class_root); |
| 600 | mirror::Method::SetArrayClass(class_root); |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 601 | |
Brian Carlstrom | 1f87008 | 2011-08-23 16:02:11 -0700 | [diff] [blame] | 602 | // java.lang.ref classes need to be specially flagged, but otherwise are normal classes |
Fred Shih | 4ee7a66 | 2014-07-11 09:59:27 -0700 | [diff] [blame] | 603 | // finish initializing Reference class |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 604 | mirror::Class::SetStatus(java_lang_ref_Reference, mirror::Class::kStatusNotReady, self); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 605 | CHECK_EQ(java_lang_ref_Reference.Get(), FindSystemClass(self, "Ljava/lang/ref/Reference;")); |
Fred Shih | 4ee7a66 | 2014-07-11 09:59:27 -0700 | [diff] [blame] | 606 | CHECK_EQ(java_lang_ref_Reference->GetObjectSize(), mirror::Reference::InstanceSize()); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 607 | CHECK_EQ(java_lang_ref_Reference->GetClassSize(), |
| 608 | mirror::Reference::ClassSize(image_pointer_size_)); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 609 | class_root = FindSystemClass(self, "Ljava/lang/ref/FinalizerReference;"); |
Mathieu Chartier | 66c2d2d | 2015-08-25 14:32:32 -0700 | [diff] [blame] | 610 | CHECK_EQ(class_root->GetClassFlags(), mirror::kClassFlagNormal); |
Mathieu Chartier | 52a7f5c | 2015-08-18 18:35:52 -0700 | [diff] [blame] | 611 | class_root->SetClassFlags(class_root->GetClassFlags() | mirror::kClassFlagFinalizerReference); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 612 | class_root = FindSystemClass(self, "Ljava/lang/ref/PhantomReference;"); |
Mathieu Chartier | 66c2d2d | 2015-08-25 14:32:32 -0700 | [diff] [blame] | 613 | CHECK_EQ(class_root->GetClassFlags(), mirror::kClassFlagNormal); |
Mathieu Chartier | 52a7f5c | 2015-08-18 18:35:52 -0700 | [diff] [blame] | 614 | class_root->SetClassFlags(class_root->GetClassFlags() | mirror::kClassFlagPhantomReference); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 615 | class_root = FindSystemClass(self, "Ljava/lang/ref/SoftReference;"); |
Mathieu Chartier | 66c2d2d | 2015-08-25 14:32:32 -0700 | [diff] [blame] | 616 | CHECK_EQ(class_root->GetClassFlags(), mirror::kClassFlagNormal); |
Mathieu Chartier | 52a7f5c | 2015-08-18 18:35:52 -0700 | [diff] [blame] | 617 | class_root->SetClassFlags(class_root->GetClassFlags() | mirror::kClassFlagSoftReference); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 618 | class_root = FindSystemClass(self, "Ljava/lang/ref/WeakReference;"); |
Mathieu Chartier | 66c2d2d | 2015-08-25 14:32:32 -0700 | [diff] [blame] | 619 | CHECK_EQ(class_root->GetClassFlags(), mirror::kClassFlagNormal); |
Mathieu Chartier | 52a7f5c | 2015-08-18 18:35:52 -0700 | [diff] [blame] | 620 | class_root->SetClassFlags(class_root->GetClassFlags() | mirror::kClassFlagWeakReference); |
Brian Carlstrom | 1f87008 | 2011-08-23 16:02:11 -0700 | [diff] [blame] | 621 | |
Ian Rogers | 23435d0 | 2012-09-24 11:23:12 -0700 | [diff] [blame] | 622 | // Setup the ClassLoader, verifying the object_size_. |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 623 | class_root = FindSystemClass(self, "Ljava/lang/ClassLoader;"); |
Mathieu Chartier | e4275c0 | 2015-08-06 15:34:15 -0700 | [diff] [blame] | 624 | class_root->SetClassLoaderClass(); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 625 | CHECK_EQ(class_root->GetObjectSize(), mirror::ClassLoader::InstanceSize()); |
| 626 | SetClassRoot(kJavaLangClassLoader, class_root); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 627 | |
jeffhao | 8cd6dda | 2012-02-22 10:15:34 -0800 | [diff] [blame] | 628 | // Set up java.lang.Throwable, java.lang.ClassNotFoundException, and |
Ian Rogers | 23435d0 | 2012-09-24 11:23:12 -0700 | [diff] [blame] | 629 | // java.lang.StackTraceElement as a convenience. |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 630 | SetClassRoot(kJavaLangThrowable, FindSystemClass(self, "Ljava/lang/Throwable;")); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 631 | mirror::Throwable::SetClass(GetClassRoot(kJavaLangThrowable)); |
Brian Carlstrom | f363283 | 2014-05-20 15:36:53 -0700 | [diff] [blame] | 632 | SetClassRoot(kJavaLangClassNotFoundException, |
| 633 | FindSystemClass(self, "Ljava/lang/ClassNotFoundException;")); |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 634 | SetClassRoot(kJavaLangStackTraceElement, FindSystemClass(self, "Ljava/lang/StackTraceElement;")); |
Brian Carlstrom | f363283 | 2014-05-20 15:36:53 -0700 | [diff] [blame] | 635 | SetClassRoot(kJavaLangStackTraceElementArrayClass, |
| 636 | FindSystemClass(self, "[Ljava/lang/StackTraceElement;")); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 637 | mirror::StackTraceElement::SetClass(GetClassRoot(kJavaLangStackTraceElement)); |
Elliott Hughes | d8ddfd5 | 2011-08-15 14:32:53 -0700 | [diff] [blame] | 638 | |
Andreas Gampe | 76bd880 | 2014-12-10 16:43:58 -0800 | [diff] [blame] | 639 | // Ensure void type is resolved in the core's dex cache so java.lang.Void is correctly |
| 640 | // initialized. |
| 641 | { |
| 642 | const DexFile& dex_file = java_lang_Object->GetDexFile(); |
Mathieu Chartier | 9507fa2 | 2015-10-29 15:08:57 -0700 | [diff] [blame] | 643 | const DexFile::TypeId* void_type_id = dex_file.FindTypeId("V"); |
Andreas Gampe | 76bd880 | 2014-12-10 16:43:58 -0800 | [diff] [blame] | 644 | CHECK(void_type_id != nullptr); |
| 645 | uint16_t void_type_idx = dex_file.GetIndexForTypeId(*void_type_id); |
| 646 | // Now we resolve void type so the dex cache contains it. We use java.lang.Object class |
| 647 | // as referrer so the used dex cache is core's one. |
| 648 | mirror::Class* resolved_type = ResolveType(dex_file, void_type_idx, java_lang_Object.Get()); |
| 649 | CHECK_EQ(resolved_type, GetClassRoot(kPrimitiveVoid)); |
| 650 | self->AssertNoPendingException(); |
| 651 | } |
| 652 | |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 653 | FinishInit(self); |
Brian Carlstrom | 0a5b14d | 2011-09-27 13:29:15 -0700 | [diff] [blame] | 654 | |
Brian Carlstrom | a004aa9 | 2012-02-08 18:05:09 -0800 | [diff] [blame] | 655 | VLOG(startup) << "ClassLinker::InitFromCompiler exiting"; |
Brian Carlstrom | a663ea5 | 2011-08-19 23:33:41 -0700 | [diff] [blame] | 656 | } |
| 657 | |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 658 | void ClassLinker::FinishInit(Thread* self) { |
Elliott Hughes | 4dd9b4d | 2011-12-12 18:29:24 -0800 | [diff] [blame] | 659 | VLOG(startup) << "ClassLinker::FinishInit entering"; |
Brian Carlstrom | 1619286 | 2011-09-12 17:50:06 -0700 | [diff] [blame] | 660 | |
| 661 | // Let the heap know some key offsets into java.lang.ref instances |
Elliott Hughes | 20cde90 | 2011-10-04 17:37:27 -0700 | [diff] [blame] | 662 | // Note: we hard code the field indexes here rather than using FindInstanceField |
Brian Carlstrom | 1619286 | 2011-09-12 17:50:06 -0700 | [diff] [blame] | 663 | // as the types of the field can't be resolved prior to the runtime being |
| 664 | // fully initialized |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 665 | mirror::Class* java_lang_ref_Reference = GetClassRoot(kJavaLangRefReference); |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 666 | mirror::Class* java_lang_ref_FinalizerReference = |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 667 | FindSystemClass(self, "Ljava/lang/ref/FinalizerReference;"); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 668 | |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 669 | ArtField* pendingNext = java_lang_ref_Reference->GetInstanceField(0); |
Mathieu Chartier | 61c5ebc | 2014-06-05 17:42:53 -0700 | [diff] [blame] | 670 | CHECK_STREQ(pendingNext->GetName(), "pendingNext"); |
| 671 | CHECK_STREQ(pendingNext->GetTypeDescriptor(), "Ljava/lang/ref/Reference;"); |
Brian Carlstrom | 1619286 | 2011-09-12 17:50:06 -0700 | [diff] [blame] | 672 | |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 673 | ArtField* queue = java_lang_ref_Reference->GetInstanceField(1); |
Mathieu Chartier | 61c5ebc | 2014-06-05 17:42:53 -0700 | [diff] [blame] | 674 | CHECK_STREQ(queue->GetName(), "queue"); |
| 675 | CHECK_STREQ(queue->GetTypeDescriptor(), "Ljava/lang/ref/ReferenceQueue;"); |
Brian Carlstrom | 1619286 | 2011-09-12 17:50:06 -0700 | [diff] [blame] | 676 | |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 677 | ArtField* queueNext = java_lang_ref_Reference->GetInstanceField(2); |
Mathieu Chartier | 61c5ebc | 2014-06-05 17:42:53 -0700 | [diff] [blame] | 678 | CHECK_STREQ(queueNext->GetName(), "queueNext"); |
| 679 | CHECK_STREQ(queueNext->GetTypeDescriptor(), "Ljava/lang/ref/Reference;"); |
Brian Carlstrom | 1619286 | 2011-09-12 17:50:06 -0700 | [diff] [blame] | 680 | |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 681 | ArtField* referent = java_lang_ref_Reference->GetInstanceField(3); |
Mathieu Chartier | 61c5ebc | 2014-06-05 17:42:53 -0700 | [diff] [blame] | 682 | CHECK_STREQ(referent->GetName(), "referent"); |
| 683 | CHECK_STREQ(referent->GetTypeDescriptor(), "Ljava/lang/Object;"); |
Brian Carlstrom | 1619286 | 2011-09-12 17:50:06 -0700 | [diff] [blame] | 684 | |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 685 | ArtField* zombie = java_lang_ref_FinalizerReference->GetInstanceField(2); |
Mathieu Chartier | 61c5ebc | 2014-06-05 17:42:53 -0700 | [diff] [blame] | 686 | CHECK_STREQ(zombie->GetName(), "zombie"); |
| 687 | CHECK_STREQ(zombie->GetTypeDescriptor(), "Ljava/lang/Object;"); |
Brian Carlstrom | 1619286 | 2011-09-12 17:50:06 -0700 | [diff] [blame] | 688 | |
Brian Carlstrom | a663ea5 | 2011-08-19 23:33:41 -0700 | [diff] [blame] | 689 | // ensure all class_roots_ are initialized |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame] | 690 | for (size_t i = 0; i < kClassRootsMax; i++) { |
Brian Carlstrom | a663ea5 | 2011-08-19 23:33:41 -0700 | [diff] [blame] | 691 | ClassRoot class_root = static_cast<ClassRoot>(i); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 692 | mirror::Class* klass = GetClassRoot(class_root); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 693 | CHECK(klass != nullptr); |
| 694 | DCHECK(klass->IsArrayClass() || klass->IsPrimitive() || klass->GetDexCache() != nullptr); |
Brian Carlstrom | a663ea5 | 2011-08-19 23:33:41 -0700 | [diff] [blame] | 695 | // note SetClassRoot does additional validation. |
| 696 | // if possible add new checks there to catch errors early |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame] | 697 | } |
| 698 | |
Hiroshi Yamauchi | 94f7b49 | 2014-07-22 18:08:23 -0700 | [diff] [blame] | 699 | CHECK(!array_iftable_.IsNull()); |
Elliott Hughes | 92f14b2 | 2011-10-06 12:29:54 -0700 | [diff] [blame] | 700 | |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame] | 701 | // disable the slow paths in FindClass and CreatePrimitiveClass now |
| 702 | // that Object, Class, and Object[] are setup |
| 703 | init_done_ = true; |
Brian Carlstrom | 0a5b14d | 2011-09-27 13:29:15 -0700 | [diff] [blame] | 704 | |
Elliott Hughes | 4dd9b4d | 2011-12-12 18:29:24 -0800 | [diff] [blame] | 705 | VLOG(startup) << "ClassLinker::FinishInit exiting"; |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame] | 706 | } |
| 707 | |
Elliott Hughes | 2a20cfd | 2011-09-23 19:30:41 -0700 | [diff] [blame] | 708 | void ClassLinker::RunRootClinits() { |
| 709 | Thread* self = Thread::Current(); |
| 710 | for (size_t i = 0; i < ClassLinker::kClassRootsMax; ++i) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 711 | mirror::Class* c = GetClassRoot(ClassRoot(i)); |
Elliott Hughes | 2a20cfd | 2011-09-23 19:30:41 -0700 | [diff] [blame] | 712 | if (!c->IsArrayClass() && !c->IsPrimitive()) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 713 | StackHandleScope<1> hs(self); |
| 714 | Handle<mirror::Class> h_class(hs.NewHandle(GetClassRoot(ClassRoot(i)))); |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 715 | EnsureInitialized(self, h_class, true, true); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 716 | self->AssertNoPendingException(); |
Elliott Hughes | 2a20cfd | 2011-09-23 19:30:41 -0700 | [diff] [blame] | 717 | } |
| 718 | } |
| 719 | } |
| 720 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 721 | static void SanityCheckArtMethod(ArtMethod* m, |
| 722 | mirror::Class* expected_class, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 723 | gc::space::ImageSpace* space) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 724 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 725 | if (m->IsRuntimeMethod()) { |
| 726 | CHECK(m->GetDeclaringClass() == nullptr) << PrettyMethod(m); |
| 727 | } else if (m->IsMiranda()) { |
| 728 | CHECK(m->GetDeclaringClass() != nullptr) << PrettyMethod(m); |
| 729 | } else if (expected_class != nullptr) { |
| 730 | CHECK_EQ(m->GetDeclaringClassUnchecked(), expected_class) << PrettyMethod(m); |
| 731 | } |
| 732 | if (space != nullptr) { |
| 733 | auto& header = space->GetImageHeader(); |
| 734 | auto& methods = header.GetMethodsSection(); |
| 735 | auto offset = reinterpret_cast<uint8_t*>(m) - space->Begin(); |
| 736 | CHECK(methods.Contains(offset)) << m << " not in " << methods; |
| 737 | } |
| 738 | } |
| 739 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 740 | static void SanityCheckArtMethodPointerArray(mirror::PointerArray* arr, |
| 741 | mirror::Class* expected_class, |
| 742 | size_t pointer_size, |
| 743 | gc::space::ImageSpace* space) |
| 744 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 745 | CHECK(arr != nullptr); |
| 746 | for (int32_t j = 0; j < arr->GetLength(); ++j) { |
| 747 | auto* method = arr->GetElementPtrSize<ArtMethod*>(j, pointer_size); |
| 748 | // expected_class == null means we are a dex cache. |
| 749 | if (expected_class != nullptr) { |
| 750 | CHECK(method != nullptr); |
| 751 | } |
| 752 | if (method != nullptr) { |
| 753 | SanityCheckArtMethod(method, expected_class, space); |
Ian Rogers | 848871b | 2013-08-05 10:56:33 -0700 | [diff] [blame] | 754 | } |
| 755 | } |
| 756 | } |
| 757 | |
Vladimir Marko | 05792b9 | 2015-08-03 11:56:49 +0100 | [diff] [blame] | 758 | static void SanityCheckArtMethodPointerArray( |
| 759 | ArtMethod** arr, |
| 760 | size_t size, |
| 761 | size_t pointer_size, |
| 762 | gc::space::ImageSpace* space) SHARED_REQUIRES(Locks::mutator_lock_) { |
| 763 | CHECK_EQ(arr != nullptr, size != 0u); |
| 764 | if (arr != nullptr) { |
| 765 | auto offset = reinterpret_cast<uint8_t*>(arr) - space->Begin(); |
| 766 | CHECK(space->GetImageHeader().GetImageSection( |
| 767 | ImageHeader::kSectionDexCacheArrays).Contains(offset)); |
| 768 | } |
| 769 | for (size_t j = 0; j < size; ++j) { |
| 770 | ArtMethod* method = mirror::DexCache::GetElementPtrSize(arr, j, pointer_size); |
| 771 | // expected_class == null means we are a dex cache. |
| 772 | if (method != nullptr) { |
| 773 | SanityCheckArtMethod(method, nullptr, space); |
| 774 | } |
| 775 | } |
| 776 | } |
| 777 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 778 | static void SanityCheckObjectsCallback(mirror::Object* obj, void* arg ATTRIBUTE_UNUSED) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 779 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 780 | DCHECK(obj != nullptr); |
Mathieu Chartier | d39645e | 2015-06-09 17:50:29 -0700 | [diff] [blame] | 781 | CHECK(obj->GetClass() != nullptr) << "Null class in object " << obj; |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 782 | CHECK(obj->GetClass()->GetClass() != nullptr) << "Null class class " << obj; |
| 783 | if (obj->IsClass()) { |
| 784 | auto klass = obj->AsClass(); |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 785 | for (ArtField& field : klass->GetIFields()) { |
| 786 | CHECK_EQ(field.GetDeclaringClass(), klass); |
| 787 | } |
| 788 | for (ArtField& field : klass->GetSFields()) { |
| 789 | CHECK_EQ(field.GetDeclaringClass(), klass); |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 790 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 791 | auto* runtime = Runtime::Current(); |
| 792 | auto* image_space = runtime->GetHeap()->GetImageSpace(); |
| 793 | auto pointer_size = runtime->GetClassLinker()->GetImagePointerSize(); |
| 794 | for (auto& m : klass->GetDirectMethods(pointer_size)) { |
| 795 | SanityCheckArtMethod(&m, klass, image_space); |
| 796 | } |
| 797 | for (auto& m : klass->GetVirtualMethods(pointer_size)) { |
| 798 | SanityCheckArtMethod(&m, klass, image_space); |
| 799 | } |
| 800 | auto* vtable = klass->GetVTable(); |
| 801 | if (vtable != nullptr) { |
| 802 | SanityCheckArtMethodPointerArray(vtable, nullptr, pointer_size, image_space); |
| 803 | } |
| 804 | if (klass->ShouldHaveEmbeddedImtAndVTable()) { |
| 805 | for (size_t i = 0; i < mirror::Class::kImtSize; ++i) { |
| 806 | SanityCheckArtMethod(klass->GetEmbeddedImTableEntry(i, pointer_size), nullptr, image_space); |
| 807 | } |
| 808 | for (int32_t i = 0; i < klass->GetEmbeddedVTableLength(); ++i) { |
| 809 | SanityCheckArtMethod(klass->GetEmbeddedVTableEntry(i, pointer_size), nullptr, image_space); |
| 810 | } |
| 811 | } |
| 812 | auto* iftable = klass->GetIfTable(); |
| 813 | if (iftable != nullptr) { |
| 814 | for (int32_t i = 0; i < klass->GetIfTableCount(); ++i) { |
| 815 | if (iftable->GetMethodArrayCount(i) > 0) { |
| 816 | SanityCheckArtMethodPointerArray(iftable->GetMethodArray(i), nullptr, pointer_size, |
| 817 | image_space); |
| 818 | } |
| 819 | } |
| 820 | } |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 821 | } |
| 822 | } |
| 823 | |
Sebastien Hertz | 46e857a | 2015-08-06 12:52:43 +0200 | [diff] [blame] | 824 | // Set image methods' entry point to interpreter. |
| 825 | class SetInterpreterEntrypointArtMethodVisitor : public ArtMethodVisitor { |
| 826 | public: |
| 827 | explicit SetInterpreterEntrypointArtMethodVisitor(size_t image_pointer_size) |
| 828 | : image_pointer_size_(image_pointer_size) {} |
| 829 | |
| 830 | void Visit(ArtMethod* method) OVERRIDE SHARED_REQUIRES(Locks::mutator_lock_) { |
| 831 | if (kIsDebugBuild && !method->IsRuntimeMethod()) { |
| 832 | CHECK(method->GetDeclaringClass() != nullptr); |
| 833 | } |
| 834 | if (!method->IsNative() && !method->IsRuntimeMethod() && !method->IsResolutionMethod()) { |
| 835 | method->SetEntryPointFromQuickCompiledCodePtrSize(GetQuickToInterpreterBridge(), |
| 836 | image_pointer_size_); |
| 837 | } |
| 838 | } |
| 839 | |
| 840 | private: |
| 841 | const size_t image_pointer_size_; |
| 842 | |
| 843 | DISALLOW_COPY_AND_ASSIGN(SetInterpreterEntrypointArtMethodVisitor); |
| 844 | }; |
| 845 | |
Brian Carlstrom | 58ae941 | 2011-10-04 00:56:06 -0700 | [diff] [blame] | 846 | void ClassLinker::InitFromImage() { |
Elliott Hughes | 4dd9b4d | 2011-12-12 18:29:24 -0800 | [diff] [blame] | 847 | VLOG(startup) << "ClassLinker::InitFromImage entering"; |
Brian Carlstrom | a663ea5 | 2011-08-19 23:33:41 -0700 | [diff] [blame] | 848 | CHECK(!init_done_); |
| 849 | |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 850 | Runtime* const runtime = Runtime::Current(); |
| 851 | Thread* const self = Thread::Current(); |
| 852 | gc::Heap* const heap = runtime->GetHeap(); |
| 853 | gc::space::ImageSpace* const space = heap->GetImageSpace(); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 854 | CHECK(space != nullptr); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 855 | image_pointer_size_ = space->GetImageHeader().GetPointerSize(); |
| 856 | dex_cache_image_class_lookup_required_ = true; |
Mathieu Chartier | f9c6fc6 | 2015-10-07 11:44:05 -0700 | [diff] [blame] | 857 | const OatFile* oat_file = runtime->GetOatFileManager().RegisterImageOatFile(space); |
| 858 | DCHECK(oat_file != nullptr); |
| 859 | CHECK_EQ(oat_file->GetOatHeader().GetImageFileLocationOatChecksum(), 0U); |
| 860 | CHECK_EQ(oat_file->GetOatHeader().GetImageFileLocationOatDataBegin(), 0U); |
| 861 | const char* image_file_location = oat_file->GetOatHeader(). |
Andreas Gampe | 22f8e5c | 2014-07-09 11:38:21 -0700 | [diff] [blame] | 862 | GetStoreValueByKey(OatHeader::kImageLocationKey); |
| 863 | CHECK(image_file_location == nullptr || *image_file_location == 0); |
Mathieu Chartier | f9c6fc6 | 2015-10-07 11:44:05 -0700 | [diff] [blame] | 864 | quick_resolution_trampoline_ = oat_file->GetOatHeader().GetQuickResolutionTrampoline(); |
| 865 | quick_imt_conflict_trampoline_ = oat_file->GetOatHeader().GetQuickImtConflictTrampoline(); |
| 866 | quick_generic_jni_trampoline_ = oat_file->GetOatHeader().GetQuickGenericJniTrampoline(); |
| 867 | quick_to_interpreter_bridge_trampoline_ = oat_file->GetOatHeader().GetQuickToInterpreterBridge(); |
Mathieu Chartier | 673ed3d | 2015-08-28 14:56:43 -0700 | [diff] [blame] | 868 | StackHandleScope<2> hs(self); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 869 | mirror::Object* dex_caches_object = space->GetImageHeader().GetImageRoot(ImageHeader::kDexCaches); |
Mathieu Chartier | 673ed3d | 2015-08-28 14:56:43 -0700 | [diff] [blame] | 870 | Handle<mirror::ObjectArray<mirror::DexCache>> dex_caches( |
| 871 | hs.NewHandle(dex_caches_object->AsObjectArray<mirror::DexCache>())); |
Brian Carlstrom | 58ae941 | 2011-10-04 00:56:06 -0700 | [diff] [blame] | 872 | |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 873 | Handle<mirror::ObjectArray<mirror::Class>> class_roots(hs.NewHandle( |
| 874 | space->GetImageHeader().GetImageRoot(ImageHeader::kClassRoots)-> |
| 875 | AsObjectArray<mirror::Class>())); |
Hiroshi Yamauchi | 94f7b49 | 2014-07-22 18:08:23 -0700 | [diff] [blame] | 876 | class_roots_ = GcRoot<mirror::ObjectArray<mirror::Class>>(class_roots.Get()); |
Mathieu Chartier | 02b6a78 | 2012-10-26 13:51:26 -0700 | [diff] [blame] | 877 | |
Brian Carlstrom | fddf6f6 | 2012-03-15 16:56:45 -0700 | [diff] [blame] | 878 | // Special case of setting up the String class early so that we can test arbitrary objects |
| 879 | // as being Strings or not |
Anwar Ghuloum | c4f105d | 2013-04-10 16:12:11 -0700 | [diff] [blame] | 880 | mirror::String::SetClass(GetClassRoot(kJavaLangString)); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 881 | |
Mathieu Chartier | 673ed3d | 2015-08-28 14:56:43 -0700 | [diff] [blame] | 882 | mirror::Class* java_lang_Object = GetClassRoot(kJavaLangObject); |
| 883 | java_lang_Object->SetObjectSize(sizeof(mirror::Object)); |
| 884 | Runtime::Current()->SetSentinel(Runtime::Current()->GetHeap()->AllocObject<true>(self, |
| 885 | java_lang_Object, |
| 886 | java_lang_Object->GetObjectSize(), |
| 887 | VoidFunctor())); |
| 888 | |
Mathieu Chartier | f9c6fc6 | 2015-10-07 11:44:05 -0700 | [diff] [blame] | 889 | CHECK_EQ(oat_file->GetOatHeader().GetDexFileCount(), |
Brian Carlstrom | fddf6f6 | 2012-03-15 16:56:45 -0700 | [diff] [blame] | 890 | static_cast<uint32_t>(dex_caches->GetLength())); |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 891 | for (int32_t i = 0; i < dex_caches->GetLength(); i++) { |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 892 | StackHandleScope<1> hs2(self); |
| 893 | Handle<mirror::DexCache> dex_cache(hs2.NewHandle(dex_caches->Get(i))); |
Brian Carlstrom | fddf6f6 | 2012-03-15 16:56:45 -0700 | [diff] [blame] | 894 | const std::string& dex_file_location(dex_cache->GetLocation()->ToModifiedUtf8()); |
Mathieu Chartier | f9c6fc6 | 2015-10-07 11:44:05 -0700 | [diff] [blame] | 895 | const OatFile::OatDexFile* oat_dex_file = oat_file->GetOatDexFile(dex_file_location.c_str(), |
| 896 | nullptr); |
| 897 | CHECK(oat_dex_file != nullptr) << oat_file->GetLocation() << " " << dex_file_location; |
Ian Rogers | 8d31bbd | 2013-10-13 10:44:14 -0700 | [diff] [blame] | 898 | std::string error_msg; |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 899 | std::unique_ptr<const DexFile> dex_file = oat_dex_file->OpenDexFile(&error_msg); |
Mathieu Chartier | f9c6fc6 | 2015-10-07 11:44:05 -0700 | [diff] [blame] | 900 | if (dex_file == nullptr) { |
Brian Carlstrom | fddf6f6 | 2012-03-15 16:56:45 -0700 | [diff] [blame] | 901 | LOG(FATAL) << "Failed to open dex file " << dex_file_location |
Mathieu Chartier | f9c6fc6 | 2015-10-07 11:44:05 -0700 | [diff] [blame] | 902 | << " from within oat file " << oat_file->GetLocation() |
Ian Rogers | 8d31bbd | 2013-10-13 10:44:14 -0700 | [diff] [blame] | 903 | << " error '" << error_msg << "'"; |
Ian Rogers | e0a02da | 2014-12-02 14:10:53 -0800 | [diff] [blame] | 904 | UNREACHABLE(); |
Brian Carlstrom | 58ae941 | 2011-10-04 00:56:06 -0700 | [diff] [blame] | 905 | } |
Brian Carlstrom | fddf6f6 | 2012-03-15 16:56:45 -0700 | [diff] [blame] | 906 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 907 | if (kSanityCheckObjects) { |
Vladimir Marko | 05792b9 | 2015-08-03 11:56:49 +0100 | [diff] [blame] | 908 | SanityCheckArtMethodPointerArray(dex_cache->GetResolvedMethods(), |
| 909 | dex_cache->NumResolvedMethods(), |
| 910 | image_pointer_size_, |
| 911 | space); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 912 | } |
| 913 | |
Brian Carlstrom | fddf6f6 | 2012-03-15 16:56:45 -0700 | [diff] [blame] | 914 | CHECK_EQ(dex_file->GetLocationChecksum(), oat_dex_file->GetDexFileLocationChecksum()); |
| 915 | |
Richard Uhler | fbef44d | 2014-12-23 09:48:51 -0800 | [diff] [blame] | 916 | AppendToBootClassPath(*dex_file.get(), dex_cache); |
| 917 | opened_dex_files_.push_back(std::move(dex_file)); |
Brian Carlstrom | 58ae941 | 2011-10-04 00:56:06 -0700 | [diff] [blame] | 918 | } |
| 919 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 920 | CHECK(ValidPointerSize(image_pointer_size_)) << image_pointer_size_; |
| 921 | |
Anwar Ghuloum | c4f105d | 2013-04-10 16:12:11 -0700 | [diff] [blame] | 922 | // Set classes on AbstractMethod early so that IsMethod tests can be performed during the live |
| 923 | // bitmap walk. |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 924 | if (!runtime->IsAotCompiler()) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 925 | // Only the Aot compiler supports having an image with a different pointer size than the |
| 926 | // runtime. This happens on the host for compile 32 bit tests since we use a 64 bit libart |
| 927 | // compiler. We may also use 32 bit dex2oat on a system with 64 bit apps. |
| 928 | CHECK_EQ(image_pointer_size_, sizeof(void*)); |
Mathieu Chartier | 2d72101 | 2014-11-10 11:08:06 -0800 | [diff] [blame] | 929 | } |
Anwar Ghuloum | c4f105d | 2013-04-10 16:12:11 -0700 | [diff] [blame] | 930 | |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 931 | if (kSanityCheckObjects) { |
| 932 | for (int32_t i = 0; i < dex_caches->GetLength(); i++) { |
| 933 | auto* dex_cache = dex_caches->Get(i); |
| 934 | for (size_t j = 0; j < dex_cache->NumResolvedFields(); ++j) { |
| 935 | auto* field = dex_cache->GetResolvedField(j, image_pointer_size_); |
| 936 | if (field != nullptr) { |
| 937 | CHECK(field->GetDeclaringClass()->GetClass() != nullptr); |
| 938 | } |
| 939 | } |
| 940 | } |
| 941 | heap->VisitObjects(SanityCheckObjectsCallback, nullptr); |
| 942 | } |
Brian Carlstrom | a663ea5 | 2011-08-19 23:33:41 -0700 | [diff] [blame] | 943 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 944 | // Set entry point to interpreter if in InterpretOnly mode. |
| 945 | if (!runtime->IsAotCompiler() && runtime->GetInstrumentation()->InterpretOnly()) { |
Sebastien Hertz | 46e857a | 2015-08-06 12:52:43 +0200 | [diff] [blame] | 946 | const ImageHeader& header = space->GetImageHeader(); |
| 947 | const ImageSection& methods = header.GetMethodsSection(); |
Sebastien Hertz | 46e857a | 2015-08-06 12:52:43 +0200 | [diff] [blame] | 948 | SetInterpreterEntrypointArtMethodVisitor visitor(image_pointer_size_); |
Vladimir Marko | cf36d49 | 2015-08-12 19:27:26 +0100 | [diff] [blame] | 949 | methods.VisitPackedArtMethods(&visitor, space->Begin(), image_pointer_size_); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 950 | } |
| 951 | |
Brian Carlstrom | a663ea5 | 2011-08-19 23:33:41 -0700 | [diff] [blame] | 952 | // reinit class_roots_ |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 953 | mirror::Class::SetClassClass(class_roots->Get(kJavaLangClass)); |
Hiroshi Yamauchi | 94f7b49 | 2014-07-22 18:08:23 -0700 | [diff] [blame] | 954 | class_roots_ = GcRoot<mirror::ObjectArray<mirror::Class>>(class_roots.Get()); |
Brian Carlstrom | a663ea5 | 2011-08-19 23:33:41 -0700 | [diff] [blame] | 955 | |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 956 | // reinit array_iftable_ from any array class instance, they should be == |
Hiroshi Yamauchi | 94f7b49 | 2014-07-22 18:08:23 -0700 | [diff] [blame] | 957 | array_iftable_ = GcRoot<mirror::IfTable>(GetClassRoot(kObjectArrayClass)->GetIfTable()); |
Mathieu Chartier | 2d72101 | 2014-11-10 11:08:06 -0800 | [diff] [blame] | 958 | DCHECK_EQ(array_iftable_.Read(), GetClassRoot(kBooleanArrayClass)->GetIfTable()); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 959 | // String class root was set above |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 960 | mirror::Field::SetClass(GetClassRoot(kJavaLangReflectField)); |
| 961 | mirror::Field::SetArrayClass(GetClassRoot(kJavaLangReflectFieldArrayClass)); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 962 | mirror::Constructor::SetClass(GetClassRoot(kJavaLangReflectConstructor)); |
| 963 | mirror::Constructor::SetArrayClass(GetClassRoot(kJavaLangReflectConstructorArrayClass)); |
| 964 | mirror::Method::SetClass(GetClassRoot(kJavaLangReflectMethod)); |
| 965 | mirror::Method::SetArrayClass(GetClassRoot(kJavaLangReflectMethodArrayClass)); |
Fred Shih | 4ee7a66 | 2014-07-11 09:59:27 -0700 | [diff] [blame] | 966 | mirror::Reference::SetClass(GetClassRoot(kJavaLangRefReference)); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 967 | mirror::BooleanArray::SetArrayClass(GetClassRoot(kBooleanArrayClass)); |
| 968 | mirror::ByteArray::SetArrayClass(GetClassRoot(kByteArrayClass)); |
| 969 | mirror::CharArray::SetArrayClass(GetClassRoot(kCharArrayClass)); |
| 970 | mirror::DoubleArray::SetArrayClass(GetClassRoot(kDoubleArrayClass)); |
| 971 | mirror::FloatArray::SetArrayClass(GetClassRoot(kFloatArrayClass)); |
| 972 | mirror::IntArray::SetArrayClass(GetClassRoot(kIntArrayClass)); |
| 973 | mirror::LongArray::SetArrayClass(GetClassRoot(kLongArrayClass)); |
| 974 | mirror::ShortArray::SetArrayClass(GetClassRoot(kShortArrayClass)); |
| 975 | mirror::Throwable::SetClass(GetClassRoot(kJavaLangThrowable)); |
| 976 | mirror::StackTraceElement::SetClass(GetClassRoot(kJavaLangStackTraceElement)); |
Brian Carlstrom | a663ea5 | 2011-08-19 23:33:41 -0700 | [diff] [blame] | 977 | |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 978 | FinishInit(self); |
Brian Carlstrom | 0a5b14d | 2011-09-27 13:29:15 -0700 | [diff] [blame] | 979 | |
Elliott Hughes | 4dd9b4d | 2011-12-12 18:29:24 -0800 | [diff] [blame] | 980 | VLOG(startup) << "ClassLinker::InitFromImage exiting"; |
Brian Carlstrom | a663ea5 | 2011-08-19 23:33:41 -0700 | [diff] [blame] | 981 | } |
| 982 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 983 | bool ClassLinker::ClassInClassTable(mirror::Class* klass) { |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 984 | ClassTable* const class_table = ClassTableForClassLoader(klass->GetClassLoader()); |
| 985 | return class_table != nullptr && class_table->Contains(klass); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 986 | } |
| 987 | |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 988 | void ClassLinker::VisitClassRoots(RootVisitor* visitor, VisitRootFlags flags) { |
Mathieu Chartier | 7778b88 | 2015-10-05 16:41:10 -0700 | [diff] [blame] | 989 | // Acquire tracing_enabled before locking class linker lock to prevent lock order violation. Since |
| 990 | // enabling tracing requires the mutator lock, there are no race conditions here. |
| 991 | const bool tracing_enabled = Trace::IsTracingEnabled(); |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 992 | Thread* const self = Thread::Current(); |
| 993 | WriterMutexLock mu(self, *Locks::classlinker_classes_lock_); |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 994 | BufferedRootVisitor<kDefaultBufferedRootCount> buffered_visitor( |
| 995 | visitor, RootInfo(kRootStickyClass)); |
Mathieu Chartier | 52e4b43 | 2014-06-10 11:22:31 -0700 | [diff] [blame] | 996 | if ((flags & kVisitRootFlagAllRoots) != 0) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 997 | // Argument for how root visiting deals with ArtField and ArtMethod roots. |
| 998 | // There is 3 GC cases to handle: |
| 999 | // Non moving concurrent: |
| 1000 | // This case is easy to handle since the reference members of ArtMethod and ArtFields are held |
Mathieu Chartier | da7c650 | 2015-07-23 16:01:26 -0700 | [diff] [blame] | 1001 | // live by the class and class roots. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1002 | // |
| 1003 | // Moving non-concurrent: |
| 1004 | // This case needs to call visit VisitNativeRoots in case the classes or dex cache arrays move. |
| 1005 | // To prevent missing roots, this case needs to ensure that there is no |
| 1006 | // suspend points between the point which we allocate ArtMethod arrays and place them in a |
| 1007 | // class which is in the class table. |
| 1008 | // |
| 1009 | // Moving concurrent: |
| 1010 | // Need to make sure to not copy ArtMethods without doing read barriers since the roots are |
| 1011 | // marked concurrently and we don't hold the classlinker_classes_lock_ when we do the copy. |
Mathieu Chartier | e4275c0 | 2015-08-06 15:34:15 -0700 | [diff] [blame] | 1012 | boot_class_table_.VisitRoots(buffered_visitor); |
Mathieu Chartier | 7778b88 | 2015-10-05 16:41:10 -0700 | [diff] [blame] | 1013 | |
| 1014 | // If tracing is enabled, then mark all the class loaders to prevent unloading. |
| 1015 | if (tracing_enabled) { |
| 1016 | for (const ClassLoaderData& data : class_loaders_) { |
| 1017 | GcRoot<mirror::Object> root(GcRoot<mirror::Object>(self->DecodeJObject(data.weak_root))); |
| 1018 | root.VisitRoot(visitor, RootInfo(kRootVMInternal)); |
| 1019 | } |
| 1020 | } |
Mathieu Chartier | 52e4b43 | 2014-06-10 11:22:31 -0700 | [diff] [blame] | 1021 | } else if ((flags & kVisitRootFlagNewRoots) != 0) { |
Mathieu Chartier | c2e2062 | 2014-11-03 11:41:47 -0800 | [diff] [blame] | 1022 | for (auto& root : new_class_roots_) { |
| 1023 | mirror::Class* old_ref = root.Read<kWithoutReadBarrier>(); |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 1024 | root.VisitRoot(visitor, RootInfo(kRootStickyClass)); |
Mathieu Chartier | c2e2062 | 2014-11-03 11:41:47 -0800 | [diff] [blame] | 1025 | mirror::Class* new_ref = root.Read<kWithoutReadBarrier>(); |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 1026 | // Concurrent moving GC marked new roots through the to-space invariant. |
| 1027 | CHECK_EQ(new_ref, old_ref); |
Mathieu Chartier | 52e4b43 | 2014-06-10 11:22:31 -0700 | [diff] [blame] | 1028 | } |
| 1029 | } |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 1030 | buffered_visitor.Flush(); // Flush before clearing new_class_roots_. |
Mathieu Chartier | 52e4b43 | 2014-06-10 11:22:31 -0700 | [diff] [blame] | 1031 | if ((flags & kVisitRootFlagClearRootLog) != 0) { |
| 1032 | new_class_roots_.clear(); |
| 1033 | } |
| 1034 | if ((flags & kVisitRootFlagStartLoggingNewRoots) != 0) { |
| 1035 | log_new_class_table_roots_ = true; |
| 1036 | } else if ((flags & kVisitRootFlagStopLoggingNewRoots) != 0) { |
| 1037 | log_new_class_table_roots_ = false; |
| 1038 | } |
| 1039 | // We deliberately ignore the class roots in the image since we |
| 1040 | // handle image roots by using the MS/CMS rescanning of dirty cards. |
| 1041 | } |
| 1042 | |
Brian Carlstrom | a663ea5 | 2011-08-19 23:33:41 -0700 | [diff] [blame] | 1043 | // Keep in sync with InitCallback. Anything we visit, we need to |
| 1044 | // reinit references to when reinitializing a ClassLinker from a |
| 1045 | // mapped image. |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 1046 | void ClassLinker::VisitRoots(RootVisitor* visitor, VisitRootFlags flags) { |
Mathieu Chartier | 3100080 | 2015-06-14 14:14:37 -0700 | [diff] [blame] | 1047 | class_roots_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 1048 | VisitClassRoots(visitor, flags); |
Mathieu Chartier | 3100080 | 2015-06-14 14:14:37 -0700 | [diff] [blame] | 1049 | array_iftable_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); |
Mathieu Chartier | 6cfc2c0 | 2015-10-12 15:06:16 -0700 | [diff] [blame] | 1050 | // Instead of visiting the find_array_class_cache_ drop it so that it doesn't prevent class |
| 1051 | // unloading if we are marking roots. |
| 1052 | DropFindArrayClassCache(); |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 1053 | } |
| 1054 | |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 1055 | class VisitClassLoaderClassesVisitor : public ClassLoaderVisitor { |
| 1056 | public: |
| 1057 | explicit VisitClassLoaderClassesVisitor(ClassVisitor* visitor) |
| 1058 | : visitor_(visitor), |
| 1059 | done_(false) {} |
| 1060 | |
| 1061 | void Visit(mirror::ClassLoader* class_loader) |
| 1062 | SHARED_REQUIRES(Locks::classlinker_classes_lock_, Locks::mutator_lock_) OVERRIDE { |
| 1063 | ClassTable* const class_table = class_loader->GetClassTable(); |
| 1064 | if (!done_ && class_table != nullptr && !class_table->Visit(visitor_)) { |
| 1065 | // If the visitor ClassTable returns false it means that we don't need to continue. |
| 1066 | done_ = true; |
| 1067 | } |
| 1068 | } |
| 1069 | |
| 1070 | private: |
| 1071 | ClassVisitor* const visitor_; |
| 1072 | // If done is true then we don't need to do any more visiting. |
| 1073 | bool done_; |
| 1074 | }; |
| 1075 | |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 1076 | void ClassLinker::VisitClassesInternal(ClassVisitor* visitor) { |
Mathieu Chartier | 6b06953 | 2015-08-05 15:08:12 -0700 | [diff] [blame] | 1077 | if (boot_class_table_.Visit(visitor)) { |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 1078 | VisitClassLoaderClassesVisitor loader_visitor(visitor); |
| 1079 | VisitClassLoaders(&loader_visitor); |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 1080 | } |
| 1081 | } |
| 1082 | |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 1083 | void ClassLinker::VisitClasses(ClassVisitor* visitor) { |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 1084 | if (dex_cache_image_class_lookup_required_) { |
| 1085 | MoveImageClassesToClassTable(); |
Elliott Hughes | a215526 | 2011-11-16 16:26:58 -0800 | [diff] [blame] | 1086 | } |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 1087 | Thread* const self = Thread::Current(); |
| 1088 | ReaderMutexLock mu(self, *Locks::classlinker_classes_lock_); |
| 1089 | // Not safe to have thread suspension when we are holding a lock. |
| 1090 | if (self != nullptr) { |
| 1091 | ScopedAssertNoThreadSuspension nts(self, __FUNCTION__); |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 1092 | VisitClassesInternal(visitor); |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 1093 | } else { |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 1094 | VisitClassesInternal(visitor); |
Elliott Hughes | a215526 | 2011-11-16 16:26:58 -0800 | [diff] [blame] | 1095 | } |
| 1096 | } |
| 1097 | |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 1098 | class GetClassesInToVector : public ClassVisitor { |
| 1099 | public: |
| 1100 | bool Visit(mirror::Class* klass) OVERRIDE { |
| 1101 | classes_.push_back(klass); |
| 1102 | return true; |
| 1103 | } |
| 1104 | std::vector<mirror::Class*> classes_; |
Ian Rogers | dbf3be0 | 2014-08-29 15:40:08 -0700 | [diff] [blame] | 1105 | }; |
| 1106 | |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 1107 | class GetClassInToObjectArray : public ClassVisitor { |
| 1108 | public: |
| 1109 | explicit GetClassInToObjectArray(mirror::ObjectArray<mirror::Class>* arr) |
| 1110 | : arr_(arr), index_(0) {} |
| 1111 | |
| 1112 | bool Visit(mirror::Class* klass) OVERRIDE SHARED_REQUIRES(Locks::mutator_lock_) { |
| 1113 | ++index_; |
| 1114 | if (index_ <= arr_->GetLength()) { |
| 1115 | arr_->Set(index_ - 1, klass); |
| 1116 | return true; |
| 1117 | } |
Ian Rogers | dbf3be0 | 2014-08-29 15:40:08 -0700 | [diff] [blame] | 1118 | return false; |
| 1119 | } |
Ian Rogers | dbf3be0 | 2014-08-29 15:40:08 -0700 | [diff] [blame] | 1120 | |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 1121 | bool Succeeded() const SHARED_REQUIRES(Locks::mutator_lock_) { |
| 1122 | return index_ <= arr_->GetLength(); |
| 1123 | } |
| 1124 | |
| 1125 | private: |
| 1126 | mirror::ObjectArray<mirror::Class>* const arr_; |
| 1127 | int32_t index_; |
| 1128 | }; |
| 1129 | |
| 1130 | void ClassLinker::VisitClassesWithoutClassesLock(ClassVisitor* visitor) { |
Ian Rogers | dbf3be0 | 2014-08-29 15:40:08 -0700 | [diff] [blame] | 1131 | // TODO: it may be possible to avoid secondary storage if we iterate over dex caches. The problem |
| 1132 | // is avoiding duplicates. |
| 1133 | if (!kMovingClasses) { |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 1134 | GetClassesInToVector accumulator; |
| 1135 | VisitClasses(&accumulator); |
| 1136 | for (mirror::Class* klass : accumulator.classes_) { |
| 1137 | if (!visitor->Visit(klass)) { |
Ian Rogers | dbf3be0 | 2014-08-29 15:40:08 -0700 | [diff] [blame] | 1138 | return; |
| 1139 | } |
| 1140 | } |
| 1141 | } else { |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 1142 | Thread* const self = Thread::Current(); |
Ian Rogers | dbf3be0 | 2014-08-29 15:40:08 -0700 | [diff] [blame] | 1143 | StackHandleScope<1> hs(self); |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 1144 | auto classes = hs.NewHandle<mirror::ObjectArray<mirror::Class>>(nullptr); |
Ian Rogers | dbf3be0 | 2014-08-29 15:40:08 -0700 | [diff] [blame] | 1145 | // We size the array assuming classes won't be added to the class table during the visit. |
| 1146 | // If this assumption fails we iterate again. |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 1147 | while (true) { |
Ian Rogers | dbf3be0 | 2014-08-29 15:40:08 -0700 | [diff] [blame] | 1148 | size_t class_table_size; |
| 1149 | { |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 1150 | ReaderMutexLock mu(self, *Locks::classlinker_classes_lock_); |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 1151 | // Add 100 in case new classes get loaded when we are filling in the object array. |
| 1152 | class_table_size = NumZygoteClasses() + NumNonZygoteClasses() + 100; |
Ian Rogers | dbf3be0 | 2014-08-29 15:40:08 -0700 | [diff] [blame] | 1153 | } |
| 1154 | mirror::Class* class_type = mirror::Class::GetJavaLangClass(); |
| 1155 | mirror::Class* array_of_class = FindArrayClass(self, &class_type); |
| 1156 | classes.Assign( |
| 1157 | mirror::ObjectArray<mirror::Class>::Alloc(self, array_of_class, class_table_size)); |
| 1158 | CHECK(classes.Get() != nullptr); // OOME. |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 1159 | GetClassInToObjectArray accumulator(classes.Get()); |
| 1160 | VisitClasses(&accumulator); |
| 1161 | if (accumulator.Succeeded()) { |
| 1162 | break; |
| 1163 | } |
Ian Rogers | dbf3be0 | 2014-08-29 15:40:08 -0700 | [diff] [blame] | 1164 | } |
| 1165 | for (int32_t i = 0; i < classes->GetLength(); ++i) { |
| 1166 | // If the class table shrank during creation of the clases array we expect null elements. If |
| 1167 | // the class table grew then the loop repeats. If classes are created after the loop has |
| 1168 | // finished then we don't visit. |
| 1169 | mirror::Class* klass = classes->Get(i); |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 1170 | if (klass != nullptr && !visitor->Visit(klass)) { |
Ian Rogers | dbf3be0 | 2014-08-29 15:40:08 -0700 | [diff] [blame] | 1171 | return; |
| 1172 | } |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1173 | } |
| 1174 | } |
| 1175 | } |
| 1176 | |
Brian Carlstrom | 9ea1cb1 | 2011-08-24 23:18:18 -0700 | [diff] [blame] | 1177 | ClassLinker::~ClassLinker() { |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 1178 | mirror::Class::ResetClass(); |
| 1179 | mirror::Constructor::ResetClass(); |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 1180 | mirror::Field::ResetClass(); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 1181 | mirror::Method::ResetClass(); |
| 1182 | mirror::Reference::ResetClass(); |
| 1183 | mirror::StackTraceElement::ResetClass(); |
| 1184 | mirror::String::ResetClass(); |
| 1185 | mirror::Throwable::ResetClass(); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1186 | mirror::BooleanArray::ResetArrayClass(); |
| 1187 | mirror::ByteArray::ResetArrayClass(); |
| 1188 | mirror::CharArray::ResetArrayClass(); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 1189 | mirror::Constructor::ResetArrayClass(); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1190 | mirror::DoubleArray::ResetArrayClass(); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 1191 | mirror::Field::ResetArrayClass(); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1192 | mirror::FloatArray::ResetArrayClass(); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 1193 | mirror::Method::ResetArrayClass(); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1194 | mirror::IntArray::ResetArrayClass(); |
| 1195 | mirror::LongArray::ResetArrayClass(); |
| 1196 | mirror::ShortArray::ResetArrayClass(); |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 1197 | Thread* const self = Thread::Current(); |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 1198 | for (const ClassLoaderData& data : class_loaders_) { |
Nicolas Geoffray | 1dad3f6 | 2015-10-23 14:59:54 +0100 | [diff] [blame] | 1199 | DeleteClassLoader(self, data); |
Mathieu Chartier | 6b06953 | 2015-08-05 15:08:12 -0700 | [diff] [blame] | 1200 | } |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 1201 | class_loaders_.clear(); |
Brian Carlstrom | 9ea1cb1 | 2011-08-24 23:18:18 -0700 | [diff] [blame] | 1202 | } |
| 1203 | |
Nicolas Geoffray | 1dad3f6 | 2015-10-23 14:59:54 +0100 | [diff] [blame] | 1204 | void ClassLinker::DeleteClassLoader(Thread* self, const ClassLoaderData& data) { |
| 1205 | Runtime* const runtime = Runtime::Current(); |
| 1206 | JavaVMExt* const vm = runtime->GetJavaVM(); |
| 1207 | vm->DeleteWeakGlobalRef(self, data.weak_root); |
| 1208 | if (runtime->GetJit() != nullptr) { |
| 1209 | jit::JitCodeCache* code_cache = runtime->GetJit()->GetCodeCache(); |
| 1210 | if (code_cache != nullptr) { |
| 1211 | code_cache->RemoveMethodsIn(self, *data.allocator); |
| 1212 | } |
| 1213 | } |
| 1214 | delete data.allocator; |
| 1215 | delete data.class_table; |
| 1216 | } |
| 1217 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1218 | mirror::PointerArray* ClassLinker::AllocPointerArray(Thread* self, size_t length) { |
| 1219 | return down_cast<mirror::PointerArray*>(image_pointer_size_ == 8u ? |
| 1220 | static_cast<mirror::Array*>(mirror::LongArray::Alloc(self, length)) : |
| 1221 | static_cast<mirror::Array*>(mirror::IntArray::Alloc(self, length))); |
| 1222 | } |
| 1223 | |
Mathieu Chartier | d57d454 | 2015-10-14 10:55:30 -0700 | [diff] [blame] | 1224 | mirror::DexCache* ClassLinker::AllocDexCache(Thread* self, |
| 1225 | const DexFile& dex_file, |
| 1226 | LinearAlloc* linear_alloc) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1227 | StackHandleScope<6> hs(self); |
| 1228 | auto dex_cache(hs.NewHandle(down_cast<mirror::DexCache*>( |
| 1229 | GetClassRoot(kJavaLangDexCache)->AllocObject(self)))); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 1230 | if (dex_cache.Get() == nullptr) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1231 | self->AssertPendingOOMException(); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 1232 | return nullptr; |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1233 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1234 | auto location(hs.NewHandle(intern_table_->InternStrong(dex_file.GetLocation().c_str()))); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 1235 | if (location.Get() == nullptr) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1236 | self->AssertPendingOOMException(); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 1237 | return nullptr; |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1238 | } |
Vladimir Marko | 05792b9 | 2015-08-03 11:56:49 +0100 | [diff] [blame] | 1239 | DexCacheArraysLayout layout(image_pointer_size_, &dex_file); |
| 1240 | uint8_t* raw_arrays = nullptr; |
Vladimir Marko | 09d0943 | 2015-09-08 13:47:48 +0100 | [diff] [blame] | 1241 | if (dex_file.GetOatDexFile() != nullptr && |
| 1242 | dex_file.GetOatDexFile()->GetDexCacheArrays() != nullptr) { |
Vladimir Marko | 06d7aaa | 2015-10-16 11:23:41 +0100 | [diff] [blame] | 1243 | raw_arrays = dex_file.GetOatDexFile()->GetDexCacheArrays(); |
Vladimir Marko | 09d0943 | 2015-09-08 13:47:48 +0100 | [diff] [blame] | 1244 | } else if (dex_file.NumStringIds() != 0u || dex_file.NumTypeIds() != 0u || |
Vladimir Marko | 05792b9 | 2015-08-03 11:56:49 +0100 | [diff] [blame] | 1245 | dex_file.NumMethodIds() != 0u || dex_file.NumFieldIds() != 0u) { |
| 1246 | // NOTE: We "leak" the raw_arrays because we never destroy the dex cache. |
| 1247 | DCHECK(image_pointer_size_ == 4u || image_pointer_size_ == 8u); |
Mathieu Chartier | 32cc9ee | 2015-10-15 09:19:15 -0700 | [diff] [blame] | 1248 | // Zero-initialized. |
| 1249 | raw_arrays = reinterpret_cast<uint8_t*>(linear_alloc->Alloc(self, layout.Size())); |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1250 | } |
Vladimir Marko | 05792b9 | 2015-08-03 11:56:49 +0100 | [diff] [blame] | 1251 | GcRoot<mirror::String>* strings = (dex_file.NumStringIds() == 0u) ? nullptr : |
| 1252 | reinterpret_cast<GcRoot<mirror::String>*>(raw_arrays + layout.StringsOffset()); |
| 1253 | GcRoot<mirror::Class>* types = (dex_file.NumTypeIds() == 0u) ? nullptr : |
| 1254 | reinterpret_cast<GcRoot<mirror::Class>*>(raw_arrays + layout.TypesOffset()); |
| 1255 | ArtMethod** methods = (dex_file.NumMethodIds() == 0u) ? nullptr : |
| 1256 | reinterpret_cast<ArtMethod**>(raw_arrays + layout.MethodsOffset()); |
| 1257 | ArtField** fields = (dex_file.NumFieldIds() == 0u) ? nullptr : |
| 1258 | reinterpret_cast<ArtField**>(raw_arrays + layout.FieldsOffset()); |
| 1259 | dex_cache->Init(&dex_file, |
| 1260 | location.Get(), |
| 1261 | strings, |
| 1262 | dex_file.NumStringIds(), |
| 1263 | types, |
| 1264 | dex_file.NumTypeIds(), |
| 1265 | methods, |
| 1266 | dex_file.NumMethodIds(), |
| 1267 | fields, |
| 1268 | dex_file.NumFieldIds(), |
| 1269 | image_pointer_size_); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1270 | return dex_cache.Get(); |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 1271 | } |
| 1272 | |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 1273 | mirror::Class* ClassLinker::AllocClass(Thread* self, mirror::Class* java_lang_Class, |
Ian Rogers | 6fac447 | 2014-02-25 17:01:10 -0800 | [diff] [blame] | 1274 | uint32_t class_size) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1275 | DCHECK_GE(class_size, sizeof(mirror::Class)); |
Ian Rogers | 1d54e73 | 2013-05-02 21:10:01 -0700 | [diff] [blame] | 1276 | gc::Heap* heap = Runtime::Current()->GetHeap(); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 1277 | mirror::Class::InitializeClassVisitor visitor(class_size); |
Mathieu Chartier | 52e4b43 | 2014-06-10 11:22:31 -0700 | [diff] [blame] | 1278 | mirror::Object* k = kMovingClasses ? |
Brian Carlstrom | f363283 | 2014-05-20 15:36:53 -0700 | [diff] [blame] | 1279 | heap->AllocObject<true>(self, java_lang_Class, class_size, visitor) : |
| 1280 | heap->AllocNonMovableObject<true>(self, java_lang_Class, class_size, visitor); |
Ian Rogers | 6fac447 | 2014-02-25 17:01:10 -0800 | [diff] [blame] | 1281 | if (UNLIKELY(k == nullptr)) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1282 | self->AssertPendingOOMException(); |
Ian Rogers | 6fac447 | 2014-02-25 17:01:10 -0800 | [diff] [blame] | 1283 | return nullptr; |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 1284 | } |
Ian Rogers | 6fac447 | 2014-02-25 17:01:10 -0800 | [diff] [blame] | 1285 | return k->AsClass(); |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame] | 1286 | } |
| 1287 | |
Ian Rogers | 6fac447 | 2014-02-25 17:01:10 -0800 | [diff] [blame] | 1288 | mirror::Class* ClassLinker::AllocClass(Thread* self, uint32_t class_size) { |
Ian Rogers | 50b35e2 | 2012-10-04 10:09:15 -0700 | [diff] [blame] | 1289 | return AllocClass(self, GetClassRoot(kJavaLangClass), class_size); |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 1290 | } |
| 1291 | |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 1292 | mirror::ObjectArray<mirror::StackTraceElement>* ClassLinker::AllocStackTraceElementArray( |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 1293 | Thread* self, |
| 1294 | size_t length) { |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 1295 | return mirror::ObjectArray<mirror::StackTraceElement>::Alloc( |
| 1296 | self, GetClassRoot(kJavaLangStackTraceElementArrayClass), length); |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 1297 | } |
| 1298 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 1299 | mirror::Class* ClassLinker::EnsureResolved(Thread* self, |
| 1300 | const char* descriptor, |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 1301 | mirror::Class* klass) { |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 1302 | DCHECK(klass != nullptr); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 1303 | |
| 1304 | // For temporary classes we must wait for them to be retired. |
| 1305 | if (init_done_ && klass->IsTemp()) { |
| 1306 | CHECK(!klass->IsResolved()); |
| 1307 | if (klass->IsErroneous()) { |
| 1308 | ThrowEarlierClassFailure(klass); |
| 1309 | return nullptr; |
| 1310 | } |
| 1311 | StackHandleScope<1> hs(self); |
| 1312 | Handle<mirror::Class> h_class(hs.NewHandle(klass)); |
| 1313 | ObjectLock<mirror::Class> lock(self, h_class); |
| 1314 | // Loop and wait for the resolving thread to retire this class. |
| 1315 | while (!h_class->IsRetired() && !h_class->IsErroneous()) { |
| 1316 | lock.WaitIgnoringInterrupts(); |
| 1317 | } |
| 1318 | if (h_class->IsErroneous()) { |
| 1319 | ThrowEarlierClassFailure(h_class.Get()); |
| 1320 | return nullptr; |
| 1321 | } |
| 1322 | CHECK(h_class->IsRetired()); |
| 1323 | // Get the updated class from class table. |
Mathieu Chartier | e7c9a8c | 2014-11-06 16:35:45 -0800 | [diff] [blame] | 1324 | klass = LookupClass(self, descriptor, ComputeModifiedUtf8Hash(descriptor), |
| 1325 | h_class.Get()->GetClassLoader()); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 1326 | } |
| 1327 | |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 1328 | // Wait for the class if it has not already been linked. |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 1329 | if (!klass->IsResolved() && !klass->IsErroneous()) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1330 | StackHandleScope<1> hs(self); |
Mathieu Chartier | db2633c | 2014-05-16 09:59:29 -0700 | [diff] [blame] | 1331 | HandleWrapper<mirror::Class> h_class(hs.NewHandleWrapper(&klass)); |
| 1332 | ObjectLock<mirror::Class> lock(self, h_class); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1333 | // Check for circular dependencies between classes. |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1334 | if (!h_class->IsResolved() && h_class->GetClinitThreadId() == self->GetTid()) { |
| 1335 | ThrowClassCircularityError(h_class.Get()); |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 1336 | mirror::Class::SetStatus(h_class, mirror::Class::kStatusError, self); |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 1337 | return nullptr; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1338 | } |
| 1339 | // Wait for the pending initialization to complete. |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1340 | while (!h_class->IsResolved() && !h_class->IsErroneous()) { |
Ian Rogers | 05f3057 | 2013-02-20 12:13:11 -0800 | [diff] [blame] | 1341 | lock.WaitIgnoringInterrupts(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1342 | } |
| 1343 | } |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 1344 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1345 | if (klass->IsErroneous()) { |
Elliott Hughes | 4a2b417 | 2011-09-20 17:08:25 -0700 | [diff] [blame] | 1346 | ThrowEarlierClassFailure(klass); |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 1347 | return nullptr; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1348 | } |
| 1349 | // Return the loaded class. No exceptions should be pending. |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 1350 | CHECK(klass->IsResolved()) << PrettyClass(klass); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1351 | self->AssertNoPendingException(); |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 1352 | return klass; |
| 1353 | } |
| 1354 | |
Ian Rogers | 68b5685 | 2014-08-29 20:19:11 -0700 | [diff] [blame] | 1355 | typedef std::pair<const DexFile*, const DexFile::ClassDef*> ClassPathEntry; |
| 1356 | |
| 1357 | // Search a collection of DexFiles for a descriptor |
Mathieu Chartier | e7c9a8c | 2014-11-06 16:35:45 -0800 | [diff] [blame] | 1358 | ClassPathEntry FindInClassPath(const char* descriptor, |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 1359 | size_t hash, const std::vector<const DexFile*>& class_path) { |
Mathieu Chartier | e7c9a8c | 2014-11-06 16:35:45 -0800 | [diff] [blame] | 1360 | for (const DexFile* dex_file : class_path) { |
| 1361 | const DexFile::ClassDef* dex_class_def = dex_file->FindClassDef(descriptor, hash); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 1362 | if (dex_class_def != nullptr) { |
Ian Rogers | 68b5685 | 2014-08-29 20:19:11 -0700 | [diff] [blame] | 1363 | return ClassPathEntry(dex_file, dex_class_def); |
| 1364 | } |
| 1365 | } |
Mathieu Chartier | e7c9a8c | 2014-11-06 16:35:45 -0800 | [diff] [blame] | 1366 | return ClassPathEntry(nullptr, nullptr); |
Ian Rogers | 68b5685 | 2014-08-29 20:19:11 -0700 | [diff] [blame] | 1367 | } |
| 1368 | |
Andreas Gampe | f865ea9 | 2015-04-13 22:14:19 -0700 | [diff] [blame] | 1369 | static bool IsBootClassLoader(ScopedObjectAccessAlreadyRunnable& soa, |
| 1370 | mirror::ClassLoader* class_loader) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 1371 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Andreas Gampe | f865ea9 | 2015-04-13 22:14:19 -0700 | [diff] [blame] | 1372 | return class_loader == nullptr || |
| 1373 | class_loader->GetClass() == |
| 1374 | soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_BootClassLoader); |
| 1375 | } |
| 1376 | |
| 1377 | bool ClassLinker::FindClassInPathClassLoader(ScopedObjectAccessAlreadyRunnable& soa, |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 1378 | Thread* self, |
| 1379 | const char* descriptor, |
Andreas Gampe | f865ea9 | 2015-04-13 22:14:19 -0700 | [diff] [blame] | 1380 | size_t hash, |
| 1381 | Handle<mirror::ClassLoader> class_loader, |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 1382 | mirror::Class** result) { |
Andreas Gampe | f865ea9 | 2015-04-13 22:14:19 -0700 | [diff] [blame] | 1383 | // Termination case: boot class-loader. |
| 1384 | if (IsBootClassLoader(soa, class_loader.Get())) { |
| 1385 | // The boot class loader, search the boot class path. |
| 1386 | ClassPathEntry pair = FindInClassPath(descriptor, hash, boot_class_path_); |
| 1387 | if (pair.second != nullptr) { |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 1388 | mirror::Class* klass = LookupClass(self, descriptor, hash, nullptr); |
Andreas Gampe | f865ea9 | 2015-04-13 22:14:19 -0700 | [diff] [blame] | 1389 | if (klass != nullptr) { |
| 1390 | *result = EnsureResolved(self, descriptor, klass); |
| 1391 | } else { |
| 1392 | *result = DefineClass(self, descriptor, hash, NullHandle<mirror::ClassLoader>(), |
| 1393 | *pair.first, *pair.second); |
| 1394 | } |
| 1395 | if (*result == nullptr) { |
| 1396 | CHECK(self->IsExceptionPending()) << descriptor; |
| 1397 | self->ClearException(); |
| 1398 | } |
Ian Rogers | 3242729 | 2014-11-19 14:05:21 -0800 | [diff] [blame] | 1399 | } else { |
Andreas Gampe | f865ea9 | 2015-04-13 22:14:19 -0700 | [diff] [blame] | 1400 | *result = nullptr; |
Mathieu Chartier | ab0ed82 | 2014-09-11 14:21:41 -0700 | [diff] [blame] | 1401 | } |
Andreas Gampe | f865ea9 | 2015-04-13 22:14:19 -0700 | [diff] [blame] | 1402 | return true; |
| 1403 | } |
| 1404 | |
| 1405 | // Unsupported class-loader? |
| 1406 | if (class_loader->GetClass() != |
| 1407 | soa.Decode<mirror::Class*>(WellKnownClasses::dalvik_system_PathClassLoader)) { |
| 1408 | *result = nullptr; |
| 1409 | return false; |
| 1410 | } |
| 1411 | |
| 1412 | // Handles as RegisterDexFile may allocate dex caches (and cause thread suspension). |
| 1413 | StackHandleScope<4> hs(self); |
| 1414 | Handle<mirror::ClassLoader> h_parent(hs.NewHandle(class_loader->GetParent())); |
| 1415 | bool recursive_result = FindClassInPathClassLoader(soa, self, descriptor, hash, h_parent, result); |
| 1416 | |
| 1417 | if (!recursive_result) { |
| 1418 | // Something wrong up the chain. |
| 1419 | return false; |
| 1420 | } |
| 1421 | |
| 1422 | if (*result != nullptr) { |
| 1423 | // Found the class up the chain. |
| 1424 | return true; |
| 1425 | } |
| 1426 | |
| 1427 | // Handle this step. |
| 1428 | // Handle as if this is the child PathClassLoader. |
| 1429 | // The class loader is a PathClassLoader which inherits from BaseDexClassLoader. |
| 1430 | // We need to get the DexPathList and loop through it. |
| 1431 | ArtField* const cookie_field = soa.DecodeField(WellKnownClasses::dalvik_system_DexFile_cookie); |
| 1432 | ArtField* const dex_file_field = |
| 1433 | soa.DecodeField(WellKnownClasses::dalvik_system_DexPathList__Element_dexFile); |
| 1434 | mirror::Object* dex_path_list = |
| 1435 | soa.DecodeField(WellKnownClasses::dalvik_system_PathClassLoader_pathList)-> |
| 1436 | GetObject(class_loader.Get()); |
| 1437 | if (dex_path_list != nullptr && dex_file_field != nullptr && cookie_field != nullptr) { |
| 1438 | // DexPathList has an array dexElements of Elements[] which each contain a dex file. |
| 1439 | mirror::Object* dex_elements_obj = |
| 1440 | soa.DecodeField(WellKnownClasses::dalvik_system_DexPathList_dexElements)-> |
| 1441 | GetObject(dex_path_list); |
| 1442 | // Loop through each dalvik.system.DexPathList$Element's dalvik.system.DexFile and look |
| 1443 | // at the mCookie which is a DexFile vector. |
| 1444 | if (dex_elements_obj != nullptr) { |
| 1445 | Handle<mirror::ObjectArray<mirror::Object>> dex_elements = |
| 1446 | hs.NewHandle(dex_elements_obj->AsObjectArray<mirror::Object>()); |
| 1447 | for (int32_t i = 0; i < dex_elements->GetLength(); ++i) { |
| 1448 | mirror::Object* element = dex_elements->GetWithoutChecks(i); |
| 1449 | if (element == nullptr) { |
| 1450 | // Should never happen, fall back to java code to throw a NPE. |
| 1451 | break; |
| 1452 | } |
| 1453 | mirror::Object* dex_file = dex_file_field->GetObject(element); |
| 1454 | if (dex_file != nullptr) { |
| 1455 | mirror::LongArray* long_array = cookie_field->GetObject(dex_file)->AsLongArray(); |
| 1456 | if (long_array == nullptr) { |
| 1457 | // This should never happen so log a warning. |
| 1458 | LOG(WARNING) << "Null DexFile::mCookie for " << descriptor; |
Mathieu Chartier | ab0ed82 | 2014-09-11 14:21:41 -0700 | [diff] [blame] | 1459 | break; |
| 1460 | } |
Andreas Gampe | f865ea9 | 2015-04-13 22:14:19 -0700 | [diff] [blame] | 1461 | int32_t long_array_size = long_array->GetLength(); |
Mathieu Chartier | e58991b | 2015-10-13 07:59:34 -0700 | [diff] [blame] | 1462 | // First element is the oat file. |
| 1463 | for (int32_t j = kDexFileIndexStart; j < long_array_size; ++j) { |
Andreas Gampe | f865ea9 | 2015-04-13 22:14:19 -0700 | [diff] [blame] | 1464 | const DexFile* cp_dex_file = reinterpret_cast<const DexFile*>(static_cast<uintptr_t>( |
| 1465 | long_array->GetWithoutChecks(j))); |
| 1466 | const DexFile::ClassDef* dex_class_def = cp_dex_file->FindClassDef(descriptor, hash); |
| 1467 | if (dex_class_def != nullptr) { |
Mathieu Chartier | e58991b | 2015-10-13 07:59:34 -0700 | [diff] [blame] | 1468 | mirror::Class* klass = DefineClass(self, |
| 1469 | descriptor, |
| 1470 | hash, |
| 1471 | class_loader, |
| 1472 | *cp_dex_file, |
| 1473 | *dex_class_def); |
Andreas Gampe | f865ea9 | 2015-04-13 22:14:19 -0700 | [diff] [blame] | 1474 | if (klass == nullptr) { |
| 1475 | CHECK(self->IsExceptionPending()) << descriptor; |
| 1476 | self->ClearException(); |
| 1477 | // TODO: Is it really right to break here, and not check the other dex files? |
| 1478 | return true; |
Mathieu Chartier | ab0ed82 | 2014-09-11 14:21:41 -0700 | [diff] [blame] | 1479 | } |
Andreas Gampe | f865ea9 | 2015-04-13 22:14:19 -0700 | [diff] [blame] | 1480 | *result = klass; |
| 1481 | return true; |
Mathieu Chartier | ab0ed82 | 2014-09-11 14:21:41 -0700 | [diff] [blame] | 1482 | } |
| 1483 | } |
| 1484 | } |
| 1485 | } |
| 1486 | } |
Ian Rogers | 3242729 | 2014-11-19 14:05:21 -0800 | [diff] [blame] | 1487 | self->AssertNoPendingException(); |
Mathieu Chartier | ab0ed82 | 2014-09-11 14:21:41 -0700 | [diff] [blame] | 1488 | } |
Andreas Gampe | f865ea9 | 2015-04-13 22:14:19 -0700 | [diff] [blame] | 1489 | |
| 1490 | // Result is still null from the parent call, no need to set it again... |
| 1491 | return true; |
Mathieu Chartier | ab0ed82 | 2014-09-11 14:21:41 -0700 | [diff] [blame] | 1492 | } |
| 1493 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 1494 | mirror::Class* ClassLinker::FindClass(Thread* self, |
| 1495 | const char* descriptor, |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 1496 | Handle<mirror::ClassLoader> class_loader) { |
Elliott Hughes | ba8eee1 | 2012-01-24 20:25:24 -0800 | [diff] [blame] | 1497 | DCHECK_NE(*descriptor, '\0') << "descriptor is empty string"; |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 1498 | DCHECK(self != nullptr); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1499 | self->AssertNoPendingException(); |
Elliott Hughes | c3b77c7 | 2011-12-15 20:56:48 -0800 | [diff] [blame] | 1500 | if (descriptor[1] == '\0') { |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1501 | // only the descriptors of primitive types should be 1 character long, also avoid class lookup |
| 1502 | // for primitive classes that aren't backed by dex files. |
| 1503 | return FindPrimitiveClass(descriptor[0]); |
| 1504 | } |
Mathieu Chartier | e7c9a8c | 2014-11-06 16:35:45 -0800 | [diff] [blame] | 1505 | const size_t hash = ComputeModifiedUtf8Hash(descriptor); |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 1506 | // Find the class in the loaded classes table. |
Mathieu Chartier | e7c9a8c | 2014-11-06 16:35:45 -0800 | [diff] [blame] | 1507 | mirror::Class* klass = LookupClass(self, descriptor, hash, class_loader.Get()); |
Ian Rogers | 68b5685 | 2014-08-29 20:19:11 -0700 | [diff] [blame] | 1508 | if (klass != nullptr) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 1509 | return EnsureResolved(self, descriptor, klass); |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 1510 | } |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 1511 | // Class is not yet loaded. |
| 1512 | if (descriptor[0] == '[') { |
Mathieu Chartier | e7c9a8c | 2014-11-06 16:35:45 -0800 | [diff] [blame] | 1513 | return CreateArrayClass(self, descriptor, hash, class_loader); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1514 | } else if (class_loader.Get() == nullptr) { |
Ian Rogers | 6355745 | 2014-06-04 16:57:15 -0700 | [diff] [blame] | 1515 | // The boot class loader, search the boot class path. |
Mathieu Chartier | e7c9a8c | 2014-11-06 16:35:45 -0800 | [diff] [blame] | 1516 | ClassPathEntry pair = FindInClassPath(descriptor, hash, boot_class_path_); |
Ian Rogers | 68b5685 | 2014-08-29 20:19:11 -0700 | [diff] [blame] | 1517 | if (pair.second != nullptr) { |
Mathieu Chartier | e7c9a8c | 2014-11-06 16:35:45 -0800 | [diff] [blame] | 1518 | return DefineClass(self, descriptor, hash, NullHandle<mirror::ClassLoader>(), *pair.first, |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 1519 | *pair.second); |
Ian Rogers | 6355745 | 2014-06-04 16:57:15 -0700 | [diff] [blame] | 1520 | } else { |
| 1521 | // The boot class loader is searched ahead of the application class loader, failures are |
| 1522 | // expected and will be wrapped in a ClassNotFoundException. Use the pre-allocated error to |
| 1523 | // trigger the chaining with a proper stack trace. |
| 1524 | mirror::Throwable* pre_allocated = Runtime::Current()->GetPreAllocatedNoClassDefFoundError(); |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 1525 | self->SetException(pre_allocated); |
Ian Rogers | 6355745 | 2014-06-04 16:57:15 -0700 | [diff] [blame] | 1526 | return nullptr; |
Jesse Wilson | 47daf87 | 2011-11-23 11:42:45 -0500 | [diff] [blame] | 1527 | } |
Jesse Wilson | 47daf87 | 2011-11-23 11:42:45 -0500 | [diff] [blame] | 1528 | } else { |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 1529 | ScopedObjectAccessUnchecked soa(self); |
Andreas Gampe | f865ea9 | 2015-04-13 22:14:19 -0700 | [diff] [blame] | 1530 | mirror::Class* cp_klass; |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 1531 | if (FindClassInPathClassLoader(soa, self, descriptor, hash, class_loader, &cp_klass)) { |
Andreas Gampe | f865ea9 | 2015-04-13 22:14:19 -0700 | [diff] [blame] | 1532 | // The chain was understood. So the value in cp_klass is either the class we were looking |
| 1533 | // for, or not found. |
| 1534 | if (cp_klass != nullptr) { |
| 1535 | return cp_klass; |
| 1536 | } |
| 1537 | // TODO: We handle the boot classpath loader in FindClassInPathClassLoader. Try to unify this |
| 1538 | // and the branch above. TODO: throw the right exception here. |
| 1539 | |
| 1540 | // We'll let the Java-side rediscover all this and throw the exception with the right stack |
| 1541 | // trace. |
Mathieu Chartier | 6bcae8f | 2014-09-04 18:33:17 -0700 | [diff] [blame] | 1542 | } |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 1543 | |
| 1544 | if (Runtime::Current()->IsAotCompiler()) { |
| 1545 | // Oops, compile-time, can't run actual class-loader code. |
| 1546 | mirror::Throwable* pre_allocated = Runtime::Current()->GetPreAllocatedNoClassDefFoundError(); |
| 1547 | self->SetException(pre_allocated); |
| 1548 | return nullptr; |
| 1549 | } |
| 1550 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1551 | ScopedLocalRef<jobject> class_loader_object(soa.Env(), |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1552 | soa.AddLocalReference<jobject>(class_loader.Get())); |
Elliott Hughes | 9557241 | 2011-12-13 18:14:20 -0800 | [diff] [blame] | 1553 | std::string class_name_string(DescriptorToDot(descriptor)); |
Ian Rogers | 68b5685 | 2014-08-29 20:19:11 -0700 | [diff] [blame] | 1554 | ScopedLocalRef<jobject> result(soa.Env(), nullptr); |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 1555 | { |
| 1556 | ScopedThreadStateChange tsc(self, kNative); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1557 | ScopedLocalRef<jobject> class_name_object(soa.Env(), |
| 1558 | soa.Env()->NewStringUTF(class_name_string.c_str())); |
Ian Rogers | 68b5685 | 2014-08-29 20:19:11 -0700 | [diff] [blame] | 1559 | if (class_name_object.get() == nullptr) { |
Ian Rogers | 6355745 | 2014-06-04 16:57:15 -0700 | [diff] [blame] | 1560 | DCHECK(self->IsExceptionPending()); // OOME. |
Ian Rogers | 68b5685 | 2014-08-29 20:19:11 -0700 | [diff] [blame] | 1561 | return nullptr; |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 1562 | } |
Ian Rogers | 68b5685 | 2014-08-29 20:19:11 -0700 | [diff] [blame] | 1563 | CHECK(class_loader_object.get() != nullptr); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1564 | result.reset(soa.Env()->CallObjectMethod(class_loader_object.get(), |
| 1565 | WellKnownClasses::java_lang_ClassLoader_loadClass, |
| 1566 | class_name_object.get())); |
Jesse Wilson | 47daf87 | 2011-11-23 11:42:45 -0500 | [diff] [blame] | 1567 | } |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 1568 | if (self->IsExceptionPending()) { |
Elliott Hughes | 748382f | 2012-01-26 18:07:38 -0800 | [diff] [blame] | 1569 | // If the ClassLoader threw, pass that exception up. |
Ian Rogers | 68b5685 | 2014-08-29 20:19:11 -0700 | [diff] [blame] | 1570 | return nullptr; |
| 1571 | } else if (result.get() == nullptr) { |
Ian Rogers | cab0101 | 2012-01-10 17:35:46 -0800 | [diff] [blame] | 1572 | // broken loader - throw NPE to be compatible with Dalvik |
Nicolas Geoffray | 0aa50ce | 2015-03-10 11:03:29 +0000 | [diff] [blame] | 1573 | ThrowNullPointerException(StringPrintf("ClassLoader.loadClass returned null for %s", |
| 1574 | class_name_string.c_str()).c_str()); |
Ian Rogers | 68b5685 | 2014-08-29 20:19:11 -0700 | [diff] [blame] | 1575 | return nullptr; |
Ian Rogers | 761bfa8 | 2012-01-11 10:14:05 -0800 | [diff] [blame] | 1576 | } else { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1577 | // success, return mirror::Class* |
| 1578 | return soa.Decode<mirror::Class*>(result.get()); |
Ian Rogers | 6b0870d | 2011-12-15 19:38:12 -0800 | [diff] [blame] | 1579 | } |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 1580 | } |
Ian Rogers | 0714083 | 2014-09-30 15:43:59 -0700 | [diff] [blame] | 1581 | UNREACHABLE(); |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 1582 | } |
| 1583 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 1584 | mirror::Class* ClassLinker::DefineClass(Thread* self, |
| 1585 | const char* descriptor, |
| 1586 | size_t hash, |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 1587 | Handle<mirror::ClassLoader> class_loader, |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1588 | const DexFile& dex_file, |
| 1589 | const DexFile::ClassDef& dex_class_def) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 1590 | StackHandleScope<3> hs(self); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1591 | auto klass = hs.NewHandle<mirror::Class>(nullptr); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 1592 | |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 1593 | // Load the class from the dex file. |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 1594 | if (UNLIKELY(!init_done_)) { |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 1595 | // finish up init of hand crafted class_roots_ |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 1596 | if (strcmp(descriptor, "Ljava/lang/Object;") == 0) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1597 | klass.Assign(GetClassRoot(kJavaLangObject)); |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 1598 | } else if (strcmp(descriptor, "Ljava/lang/Class;") == 0) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1599 | klass.Assign(GetClassRoot(kJavaLangClass)); |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 1600 | } else if (strcmp(descriptor, "Ljava/lang/String;") == 0) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1601 | klass.Assign(GetClassRoot(kJavaLangString)); |
Fred Shih | 4ee7a66 | 2014-07-11 09:59:27 -0700 | [diff] [blame] | 1602 | } else if (strcmp(descriptor, "Ljava/lang/ref/Reference;") == 0) { |
| 1603 | klass.Assign(GetClassRoot(kJavaLangRefReference)); |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 1604 | } else if (strcmp(descriptor, "Ljava/lang/DexCache;") == 0) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1605 | klass.Assign(GetClassRoot(kJavaLangDexCache)); |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 1606 | } |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 1607 | } |
| 1608 | |
Mathieu Chartier | e7c9a8c | 2014-11-06 16:35:45 -0800 | [diff] [blame] | 1609 | if (klass.Get() == nullptr) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 1610 | // Allocate a class with the status of not ready. |
| 1611 | // Interface object should get the right size here. Regular class will |
| 1612 | // figure out the right size later and be replaced with one of the right |
| 1613 | // size when the class becomes resolved. |
| 1614 | klass.Assign(AllocClass(self, SizeOfClassWithoutEmbeddedTables(dex_file, dex_class_def))); |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 1615 | } |
Ian Rogers | c114b5f | 2014-07-21 08:55:01 -0700 | [diff] [blame] | 1616 | if (UNLIKELY(klass.Get() == nullptr)) { |
Mathieu Chartier | 673ed3d | 2015-08-28 14:56:43 -0700 | [diff] [blame] | 1617 | self->AssertPendingOOMException(); |
Ian Rogers | c114b5f | 2014-07-21 08:55:01 -0700 | [diff] [blame] | 1618 | return nullptr; |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 1619 | } |
Mathieu Chartier | d57d454 | 2015-10-14 10:55:30 -0700 | [diff] [blame] | 1620 | mirror::DexCache* dex_cache = RegisterDexFile( |
| 1621 | dex_file, |
| 1622 | GetOrCreateAllocatorForClassLoader(class_loader.Get())); |
Mathieu Chartier | 673ed3d | 2015-08-28 14:56:43 -0700 | [diff] [blame] | 1623 | if (dex_cache == nullptr) { |
| 1624 | self->AssertPendingOOMException(); |
| 1625 | return nullptr; |
| 1626 | } |
| 1627 | klass->SetDexCache(dex_cache); |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 1628 | SetupClass(dex_file, dex_class_def, klass, class_loader.Get()); |
| 1629 | |
Jeff Hao | 848f70a | 2014-01-15 13:49:50 -0800 | [diff] [blame] | 1630 | // Mark the string class by setting its access flag. |
| 1631 | if (UNLIKELY(!init_done_)) { |
| 1632 | if (strcmp(descriptor, "Ljava/lang/String;") == 0) { |
| 1633 | klass->SetStringClass(); |
| 1634 | } |
| 1635 | } |
| 1636 | |
Mathieu Chartier | db2633c | 2014-05-16 09:59:29 -0700 | [diff] [blame] | 1637 | ObjectLock<mirror::Class> lock(self, klass); |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 1638 | klass->SetClinitThreadId(self->GetTid()); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 1639 | |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 1640 | // Add the newly loaded class to the loaded classes table. |
Mathieu Chartier | e7c9a8c | 2014-11-06 16:35:45 -0800 | [diff] [blame] | 1641 | mirror::Class* existing = InsertClass(descriptor, klass.Get(), hash); |
Ian Rogers | c114b5f | 2014-07-21 08:55:01 -0700 | [diff] [blame] | 1642 | if (existing != nullptr) { |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 1643 | // We failed to insert because we raced with another thread. Calling EnsureResolved may cause |
| 1644 | // this thread to block. |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 1645 | return EnsureResolved(self, descriptor, existing); |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 1646 | } |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 1647 | |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 1648 | // Load the fields and other things after we are inserted in the table. This is so that we don't |
| 1649 | // end up allocating unfree-able linear alloc resources and then lose the race condition. The |
| 1650 | // other reason is that the field roots are only visited from the class table. So we need to be |
| 1651 | // inserted before we allocate / fill in these fields. |
| 1652 | LoadClass(self, dex_file, dex_class_def, klass); |
| 1653 | if (self->IsExceptionPending()) { |
| 1654 | // An exception occured during load, set status to erroneous while holding klass' lock in case |
| 1655 | // notification is necessary. |
| 1656 | if (!klass->IsErroneous()) { |
| 1657 | mirror::Class::SetStatus(klass, mirror::Class::kStatusError, self); |
| 1658 | } |
| 1659 | return nullptr; |
| 1660 | } |
| 1661 | |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 1662 | // Finish loading (if necessary) by finding parents |
| 1663 | CHECK(!klass->IsLoaded()); |
| 1664 | if (!LoadSuperAndInterfaces(klass, dex_file)) { |
| 1665 | // Loading failed. |
Ian Rogers | ecd4d9a | 2014-07-22 00:59:52 -0700 | [diff] [blame] | 1666 | if (!klass->IsErroneous()) { |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 1667 | mirror::Class::SetStatus(klass, mirror::Class::kStatusError, self); |
Ian Rogers | ecd4d9a | 2014-07-22 00:59:52 -0700 | [diff] [blame] | 1668 | } |
Ian Rogers | c114b5f | 2014-07-21 08:55:01 -0700 | [diff] [blame] | 1669 | return nullptr; |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 1670 | } |
| 1671 | CHECK(klass->IsLoaded()); |
| 1672 | // Link the class (if necessary) |
| 1673 | CHECK(!klass->IsResolved()); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 1674 | // TODO: Use fast jobjects? |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1675 | auto interfaces = hs.NewHandle<mirror::ObjectArray<mirror::Class>>(nullptr); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 1676 | |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 1677 | MutableHandle<mirror::Class> h_new_class = hs.NewHandle<mirror::Class>(nullptr); |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 1678 | if (!LinkClass(self, descriptor, klass, interfaces, &h_new_class)) { |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 1679 | // Linking failed. |
Ian Rogers | ecd4d9a | 2014-07-22 00:59:52 -0700 | [diff] [blame] | 1680 | if (!klass->IsErroneous()) { |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 1681 | mirror::Class::SetStatus(klass, mirror::Class::kStatusError, self); |
Ian Rogers | ecd4d9a | 2014-07-22 00:59:52 -0700 | [diff] [blame] | 1682 | } |
Ian Rogers | c114b5f | 2014-07-21 08:55:01 -0700 | [diff] [blame] | 1683 | return nullptr; |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 1684 | } |
Mathieu Chartier | 524507a | 2014-08-27 15:28:28 -0700 | [diff] [blame] | 1685 | self->AssertNoPendingException(); |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 1686 | CHECK(h_new_class.Get() != nullptr) << descriptor; |
| 1687 | CHECK(h_new_class->IsResolved()) << descriptor; |
Elliott Hughes | 4740cdf | 2011-12-07 14:07:12 -0800 | [diff] [blame] | 1688 | |
Sebastien Hertz | a8a697f | 2015-01-15 12:28:47 +0100 | [diff] [blame] | 1689 | // Instrumentation may have updated entrypoints for all methods of all |
| 1690 | // classes. However it could not update methods of this class while we |
| 1691 | // were loading it. Now the class is resolved, we can update entrypoints |
| 1692 | // as required by instrumentation. |
| 1693 | if (Runtime::Current()->GetInstrumentation()->AreExitStubsInstalled()) { |
| 1694 | // We must be in the kRunnable state to prevent instrumentation from |
| 1695 | // suspending all threads to update entrypoints while we are doing it |
| 1696 | // for this class. |
| 1697 | DCHECK_EQ(self->GetState(), kRunnable); |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 1698 | Runtime::Current()->GetInstrumentation()->InstallStubsForClass(h_new_class.Get()); |
Sebastien Hertz | a8a697f | 2015-01-15 12:28:47 +0100 | [diff] [blame] | 1699 | } |
| 1700 | |
Elliott Hughes | 4740cdf | 2011-12-07 14:07:12 -0800 | [diff] [blame] | 1701 | /* |
| 1702 | * We send CLASS_PREPARE events to the debugger from here. The |
| 1703 | * definition of "preparation" is creating the static fields for a |
| 1704 | * class and initializing them to the standard default values, but not |
| 1705 | * executing any code (that comes later, during "initialization"). |
| 1706 | * |
| 1707 | * We did the static preparation in LinkClass. |
| 1708 | * |
| 1709 | * The class has been prepared and resolved but possibly not yet verified |
| 1710 | * at this point. |
| 1711 | */ |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 1712 | Dbg::PostClassPrepare(h_new_class.Get()); |
Elliott Hughes | 4740cdf | 2011-12-07 14:07:12 -0800 | [diff] [blame] | 1713 | |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 1714 | return h_new_class.Get(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1715 | } |
| 1716 | |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 1717 | uint32_t ClassLinker::SizeOfClassWithoutEmbeddedTables(const DexFile& dex_file, |
| 1718 | const DexFile::ClassDef& dex_class_def) { |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 1719 | const uint8_t* class_data = dex_file.GetClassData(dex_class_def); |
Brian Carlstrom | 4873d46 | 2011-08-21 15:23:39 -0700 | [diff] [blame] | 1720 | size_t num_ref = 0; |
Fred Shih | 37f05ef | 2014-07-16 18:38:08 -0700 | [diff] [blame] | 1721 | size_t num_8 = 0; |
| 1722 | size_t num_16 = 0; |
Brian Carlstrom | 4873d46 | 2011-08-21 15:23:39 -0700 | [diff] [blame] | 1723 | size_t num_32 = 0; |
| 1724 | size_t num_64 = 0; |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 1725 | if (class_data != nullptr) { |
Ian Rogers | 0571d35 | 2011-11-03 19:51:38 -0700 | [diff] [blame] | 1726 | for (ClassDataItemIterator it(dex_file, class_data); it.HasNextStaticField(); it.Next()) { |
| 1727 | const DexFile::FieldId& field_id = dex_file.GetFieldId(it.GetMemberIndex()); |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 1728 | const char* descriptor = dex_file.GetFieldTypeDescriptor(field_id); |
Brian Carlstrom | 4873d46 | 2011-08-21 15:23:39 -0700 | [diff] [blame] | 1729 | char c = descriptor[0]; |
Fred Shih | 37f05ef | 2014-07-16 18:38:08 -0700 | [diff] [blame] | 1730 | switch (c) { |
| 1731 | case 'L': |
| 1732 | case '[': |
| 1733 | num_ref++; |
| 1734 | break; |
| 1735 | case 'J': |
| 1736 | case 'D': |
| 1737 | num_64++; |
| 1738 | break; |
| 1739 | case 'I': |
| 1740 | case 'F': |
| 1741 | num_32++; |
| 1742 | break; |
| 1743 | case 'S': |
| 1744 | case 'C': |
| 1745 | num_16++; |
| 1746 | break; |
| 1747 | case 'B': |
| 1748 | case 'Z': |
| 1749 | num_8++; |
| 1750 | break; |
| 1751 | default: |
| 1752 | LOG(FATAL) << "Unknown descriptor: " << c; |
Ian Rogers | e0a02da | 2014-12-02 14:10:53 -0800 | [diff] [blame] | 1753 | UNREACHABLE(); |
Brian Carlstrom | 4873d46 | 2011-08-21 15:23:39 -0700 | [diff] [blame] | 1754 | } |
| 1755 | } |
| 1756 | } |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 1757 | return mirror::Class::ComputeClassSize(false, |
| 1758 | 0, |
| 1759 | num_8, |
| 1760 | num_16, |
| 1761 | num_32, |
| 1762 | num_64, |
| 1763 | num_ref, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1764 | image_pointer_size_); |
Brian Carlstrom | 4873d46 | 2011-08-21 15:23:39 -0700 | [diff] [blame] | 1765 | } |
| 1766 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 1767 | OatFile::OatClass ClassLinker::FindOatClass(const DexFile& dex_file, |
| 1768 | uint16_t class_def_idx, |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 1769 | bool* found) { |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 1770 | DCHECK_NE(class_def_idx, DexFile::kDexNoIndex16); |
Richard Uhler | 07b3c23 | 2015-03-31 15:57:54 -0700 | [diff] [blame] | 1771 | const OatFile::OatDexFile* oat_dex_file = dex_file.GetOatDexFile(); |
Vladimir Marko | aa4497d | 2014-09-05 14:01:17 +0100 | [diff] [blame] | 1772 | if (oat_dex_file == nullptr) { |
Ian Rogers | 97b52f8 | 2014-08-14 11:34:07 -0700 | [diff] [blame] | 1773 | *found = false; |
| 1774 | return OatFile::OatClass::Invalid(); |
Nicolas Geoffray | 4fcdc94 | 2014-07-22 10:48:00 +0100 | [diff] [blame] | 1775 | } |
Ian Rogers | 97b52f8 | 2014-08-14 11:34:07 -0700 | [diff] [blame] | 1776 | *found = true; |
| 1777 | return oat_dex_file->GetOatClass(class_def_idx); |
Ian Rogers | 1984651 | 2012-02-24 11:42:47 -0800 | [diff] [blame] | 1778 | } |
| 1779 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 1780 | static uint32_t GetOatMethodIndexFromMethodIndex(const DexFile& dex_file, |
| 1781 | uint16_t class_def_idx, |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 1782 | uint32_t method_idx) { |
| 1783 | const DexFile::ClassDef& class_def = dex_file.GetClassDef(class_def_idx); |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 1784 | const uint8_t* class_data = dex_file.GetClassData(class_def); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 1785 | CHECK(class_data != nullptr); |
Mathieu Chartier | e35517a | 2012-10-30 18:49:55 -0700 | [diff] [blame] | 1786 | ClassDataItemIterator it(dex_file, class_data); |
| 1787 | // Skip fields |
| 1788 | while (it.HasNextStaticField()) { |
| 1789 | it.Next(); |
| 1790 | } |
| 1791 | while (it.HasNextInstanceField()) { |
| 1792 | it.Next(); |
| 1793 | } |
| 1794 | // Process methods |
| 1795 | size_t class_def_method_index = 0; |
| 1796 | while (it.HasNextDirectMethod()) { |
| 1797 | if (it.GetMemberIndex() == method_idx) { |
| 1798 | return class_def_method_index; |
| 1799 | } |
| 1800 | class_def_method_index++; |
| 1801 | it.Next(); |
| 1802 | } |
| 1803 | while (it.HasNextVirtualMethod()) { |
| 1804 | if (it.GetMemberIndex() == method_idx) { |
| 1805 | return class_def_method_index; |
| 1806 | } |
| 1807 | class_def_method_index++; |
| 1808 | it.Next(); |
| 1809 | } |
| 1810 | DCHECK(!it.HasNext()); |
| 1811 | LOG(FATAL) << "Failed to find method index " << method_idx << " in " << dex_file.GetLocation(); |
Ian Rogers | e0a02da | 2014-12-02 14:10:53 -0800 | [diff] [blame] | 1812 | UNREACHABLE(); |
Mathieu Chartier | e35517a | 2012-10-30 18:49:55 -0700 | [diff] [blame] | 1813 | } |
| 1814 | |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 1815 | const OatFile::OatMethod ClassLinker::FindOatMethodFor(ArtMethod* method, bool* found) { |
Ian Rogers | 1984651 | 2012-02-24 11:42:47 -0800 | [diff] [blame] | 1816 | // Although we overwrite the trampoline of non-static methods, we may get here via the resolution |
Ian Rogers | fb6adba | 2012-03-04 21:51:51 -0800 | [diff] [blame] | 1817 | // method for direct methods (or virtual methods made direct). |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1818 | mirror::Class* declaring_class = method->GetDeclaringClass(); |
Ian Rogers | fb6adba | 2012-03-04 21:51:51 -0800 | [diff] [blame] | 1819 | size_t oat_method_index; |
| 1820 | if (method->IsStatic() || method->IsDirect()) { |
| 1821 | // Simple case where the oat method index was stashed at load time. |
| 1822 | oat_method_index = method->GetMethodIndex(); |
| 1823 | } else { |
| 1824 | // We're invoking a virtual method directly (thanks to sharpening), compute the oat_method_index |
| 1825 | // by search for its position in the declared virtual methods. |
| 1826 | oat_method_index = declaring_class->NumDirectMethods(); |
| 1827 | size_t end = declaring_class->NumVirtualMethods(); |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 1828 | bool found_virtual = false; |
Ian Rogers | fb6adba | 2012-03-04 21:51:51 -0800 | [diff] [blame] | 1829 | for (size_t i = 0; i < end; i++) { |
Jeff Hao | 68caf9e | 2014-09-03 13:48:16 -0700 | [diff] [blame] | 1830 | // Check method index instead of identity in case of duplicate method definitions. |
| 1831 | if (method->GetDexMethodIndex() == |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1832 | declaring_class->GetVirtualMethod(i, image_pointer_size_)->GetDexMethodIndex()) { |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 1833 | found_virtual = true; |
Ian Rogers | fb6adba | 2012-03-04 21:51:51 -0800 | [diff] [blame] | 1834 | break; |
| 1835 | } |
Ian Rogers | f320b63 | 2012-03-13 18:47:47 -0700 | [diff] [blame] | 1836 | oat_method_index++; |
Ian Rogers | fb6adba | 2012-03-04 21:51:51 -0800 | [diff] [blame] | 1837 | } |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 1838 | CHECK(found_virtual) << "Didn't find oat method index for virtual method: " |
| 1839 | << PrettyMethod(method); |
Ian Rogers | fb6adba | 2012-03-04 21:51:51 -0800 | [diff] [blame] | 1840 | } |
Mathieu Chartier | e35517a | 2012-10-30 18:49:55 -0700 | [diff] [blame] | 1841 | DCHECK_EQ(oat_method_index, |
| 1842 | GetOatMethodIndexFromMethodIndex(*declaring_class->GetDexCache()->GetDexFile(), |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 1843 | method->GetDeclaringClass()->GetDexClassDefIndex(), |
Mathieu Chartier | e35517a | 2012-10-30 18:49:55 -0700 | [diff] [blame] | 1844 | method->GetDexMethodIndex())); |
Ian Rogers | 97b52f8 | 2014-08-14 11:34:07 -0700 | [diff] [blame] | 1845 | OatFile::OatClass oat_class = FindOatClass(*declaring_class->GetDexCache()->GetDexFile(), |
| 1846 | declaring_class->GetDexClassDefIndex(), |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 1847 | found); |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 1848 | if (!(*found)) { |
Ian Rogers | 97b52f8 | 2014-08-14 11:34:07 -0700 | [diff] [blame] | 1849 | return OatFile::OatMethod::Invalid(); |
Nicolas Geoffray | 4fcdc94 | 2014-07-22 10:48:00 +0100 | [diff] [blame] | 1850 | } |
Ian Rogers | 97b52f8 | 2014-08-14 11:34:07 -0700 | [diff] [blame] | 1851 | return oat_class.GetOatMethod(oat_method_index); |
TDYa127 | 8532191 | 2012-04-01 15:24:56 -0700 | [diff] [blame] | 1852 | } |
| 1853 | |
| 1854 | // Special case to get oat code without overwriting a trampoline. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1855 | const void* ClassLinker::GetQuickOatCodeFor(ArtMethod* method) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1856 | CHECK(!method->IsAbstract()) << PrettyMethod(method); |
Jeff Hao | 8df6cea | 2013-07-29 13:54:48 -0700 | [diff] [blame] | 1857 | if (method->IsProxyMethod()) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 1858 | return GetQuickProxyInvokeHandler(); |
Jeff Hao | 8df6cea | 2013-07-29 13:54:48 -0700 | [diff] [blame] | 1859 | } |
Ian Rogers | 97b52f8 | 2014-08-14 11:34:07 -0700 | [diff] [blame] | 1860 | bool found; |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 1861 | OatFile::OatMethod oat_method = FindOatMethodFor(method, &found); |
Mathieu Chartier | c0d5f89 | 2015-02-25 13:22:57 -0800 | [diff] [blame] | 1862 | if (found) { |
| 1863 | auto* code = oat_method.GetQuickCode(); |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 1864 | if (code != nullptr) { |
| 1865 | return code; |
Mathieu Chartier | 2535abe | 2015-02-17 10:38:49 -0800 | [diff] [blame] | 1866 | } |
| 1867 | } |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 1868 | if (method->IsNative()) { |
| 1869 | // No code and native? Use generic trampoline. |
| 1870 | return GetQuickGenericJniStub(); |
| 1871 | } |
| 1872 | return GetQuickToInterpreterBridge(); |
TDYa127 | 8532191 | 2012-04-01 15:24:56 -0700 | [diff] [blame] | 1873 | } |
| 1874 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1875 | const void* ClassLinker::GetOatMethodQuickCodeFor(ArtMethod* method) { |
Hiroshi Yamauchi | 9bdec88 | 2014-08-15 17:11:12 -0700 | [diff] [blame] | 1876 | if (method->IsNative() || method->IsAbstract() || method->IsProxyMethod()) { |
| 1877 | return nullptr; |
| 1878 | } |
Mathieu Chartier | c0d5f89 | 2015-02-25 13:22:57 -0800 | [diff] [blame] | 1879 | bool found; |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 1880 | OatFile::OatMethod oat_method = FindOatMethodFor(method, &found); |
Mathieu Chartier | c0d5f89 | 2015-02-25 13:22:57 -0800 | [diff] [blame] | 1881 | if (found) { |
| 1882 | return oat_method.GetQuickCode(); |
| 1883 | } |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 1884 | return nullptr; |
Hiroshi Yamauchi | 9bdec88 | 2014-08-15 17:11:12 -0700 | [diff] [blame] | 1885 | } |
| 1886 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 1887 | const void* ClassLinker::GetQuickOatCodeFor(const DexFile& dex_file, |
| 1888 | uint16_t class_def_idx, |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 1889 | uint32_t method_idx) { |
Ian Rogers | 97b52f8 | 2014-08-14 11:34:07 -0700 | [diff] [blame] | 1890 | bool found; |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 1891 | OatFile::OatClass oat_class = FindOatClass(dex_file, class_def_idx, &found); |
Ian Rogers | 97b52f8 | 2014-08-14 11:34:07 -0700 | [diff] [blame] | 1892 | if (!found) { |
Nicolas Geoffray | 4fcdc94 | 2014-07-22 10:48:00 +0100 | [diff] [blame] | 1893 | return nullptr; |
| 1894 | } |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 1895 | uint32_t oat_method_idx = GetOatMethodIndexFromMethodIndex(dex_file, class_def_idx, method_idx); |
Vladimir Marko | d3c5beb | 2014-04-11 16:32:51 +0100 | [diff] [blame] | 1896 | return oat_class.GetOatMethod(oat_method_idx).GetQuickCode(); |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 1897 | } |
| 1898 | |
Sebastien Hertz | 7d658cf | 2013-07-09 10:56:11 +0200 | [diff] [blame] | 1899 | // Returns true if the method must run with interpreter, false otherwise. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1900 | static bool NeedsInterpreter(ArtMethod* method, const void* quick_code) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 1901 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 1902 | if (quick_code == nullptr) { |
Sebastien Hertz | 7d658cf | 2013-07-09 10:56:11 +0200 | [diff] [blame] | 1903 | // No code: need interpreter. |
Andreas Gampe | 2da8823 | 2014-02-27 12:26:20 -0800 | [diff] [blame] | 1904 | // May return true for native code, in the case of generic JNI |
| 1905 | // DCHECK(!method->IsNative()); |
Sebastien Hertz | 7d658cf | 2013-07-09 10:56:11 +0200 | [diff] [blame] | 1906 | return true; |
| 1907 | } |
| 1908 | // If interpreter mode is enabled, every method (except native and proxy) must |
| 1909 | // be run with interpreter. |
| 1910 | return Runtime::Current()->GetInstrumentation()->InterpretOnly() && |
| 1911 | !method->IsNative() && !method->IsProxyMethod(); |
| 1912 | } |
| 1913 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1914 | void ClassLinker::FixupStaticTrampolines(mirror::Class* klass) { |
Brian Carlstrom | 073278c | 2014-02-19 15:21:21 -0800 | [diff] [blame] | 1915 | DCHECK(klass->IsInitialized()) << PrettyDescriptor(klass); |
Ian Rogers | 1c82982 | 2013-09-30 18:18:50 -0700 | [diff] [blame] | 1916 | if (klass->NumDirectMethods() == 0) { |
| 1917 | return; // No direct methods => no static methods. |
Ian Rogers | 1984651 | 2012-02-24 11:42:47 -0800 | [diff] [blame] | 1918 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1919 | Runtime* runtime = Runtime::Current(); |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 1920 | if (!runtime->IsStarted()) { |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 1921 | if (runtime->IsAotCompiler() || runtime->GetHeap()->HasImageSpace()) { |
Alex Light | 64ad14d | 2014-08-19 14:23:13 -0700 | [diff] [blame] | 1922 | return; // OAT file unavailable. |
| 1923 | } |
Ian Rogers | 1984651 | 2012-02-24 11:42:47 -0800 | [diff] [blame] | 1924 | } |
Alex Light | 64ad14d | 2014-08-19 14:23:13 -0700 | [diff] [blame] | 1925 | |
Mathieu Chartier | f832284 | 2014-05-16 10:59:25 -0700 | [diff] [blame] | 1926 | const DexFile& dex_file = klass->GetDexFile(); |
| 1927 | const DexFile::ClassDef* dex_class_def = klass->GetClassDef(); |
Ian Rogers | 1c82982 | 2013-09-30 18:18:50 -0700 | [diff] [blame] | 1928 | CHECK(dex_class_def != nullptr); |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 1929 | const uint8_t* class_data = dex_file.GetClassData(*dex_class_def); |
Ian Rogers | 1c82982 | 2013-09-30 18:18:50 -0700 | [diff] [blame] | 1930 | // There should always be class data if there were direct methods. |
| 1931 | CHECK(class_data != nullptr) << PrettyDescriptor(klass); |
Ian Rogers | 1984651 | 2012-02-24 11:42:47 -0800 | [diff] [blame] | 1932 | ClassDataItemIterator it(dex_file, class_data); |
| 1933 | // Skip fields |
| 1934 | while (it.HasNextStaticField()) { |
| 1935 | it.Next(); |
| 1936 | } |
| 1937 | while (it.HasNextInstanceField()) { |
| 1938 | it.Next(); |
| 1939 | } |
Ian Rogers | 97b52f8 | 2014-08-14 11:34:07 -0700 | [diff] [blame] | 1940 | bool has_oat_class; |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 1941 | OatFile::OatClass oat_class = FindOatClass(dex_file, |
| 1942 | klass->GetDexClassDefIndex(), |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 1943 | &has_oat_class); |
Ian Rogers | 1c82982 | 2013-09-30 18:18:50 -0700 | [diff] [blame] | 1944 | // Link the code of methods skipped by LinkCode. |
Sebastien Hertz | 7d658cf | 2013-07-09 10:56:11 +0200 | [diff] [blame] | 1945 | for (size_t method_index = 0; it.HasNextDirectMethod(); ++method_index, it.Next()) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1946 | ArtMethod* method = klass->GetDirectMethod(method_index, image_pointer_size_); |
Sebastien Hertz | 7d658cf | 2013-07-09 10:56:11 +0200 | [diff] [blame] | 1947 | if (!method->IsStatic()) { |
| 1948 | // Only update static methods. |
| 1949 | continue; |
Ian Rogers | 1984651 | 2012-02-24 11:42:47 -0800 | [diff] [blame] | 1950 | } |
Nicolas Geoffray | 4fcdc94 | 2014-07-22 10:48:00 +0100 | [diff] [blame] | 1951 | const void* quick_code = nullptr; |
| 1952 | if (has_oat_class) { |
| 1953 | OatFile::OatMethod oat_method = oat_class.GetOatMethod(method_index); |
Nicolas Geoffray | 4fcdc94 | 2014-07-22 10:48:00 +0100 | [diff] [blame] | 1954 | quick_code = oat_method.GetQuickCode(); |
| 1955 | } |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 1956 | const bool enter_interpreter = NeedsInterpreter(method, quick_code); |
Sebastien Hertz | 7d658cf | 2013-07-09 10:56:11 +0200 | [diff] [blame] | 1957 | if (enter_interpreter) { |
| 1958 | // Use interpreter entry point. |
Ian Rogers | 1a57066 | 2014-03-12 01:02:21 -0700 | [diff] [blame] | 1959 | // Check whether the method is native, in which case it's generic JNI. |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 1960 | if (quick_code == nullptr && method->IsNative()) { |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 1961 | quick_code = GetQuickGenericJniStub(); |
Andreas Gampe | 2da8823 | 2014-02-27 12:26:20 -0800 | [diff] [blame] | 1962 | } else { |
| 1963 | quick_code = GetQuickToInterpreterBridge(); |
| 1964 | } |
Sebastien Hertz | 7d658cf | 2013-07-09 10:56:11 +0200 | [diff] [blame] | 1965 | } |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 1966 | runtime->GetInstrumentation()->UpdateMethodsCode(method, quick_code); |
Ian Rogers | 1984651 | 2012-02-24 11:42:47 -0800 | [diff] [blame] | 1967 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1968 | // Ignore virtual methods on the iterator. |
Ian Rogers | 1984651 | 2012-02-24 11:42:47 -0800 | [diff] [blame] | 1969 | } |
| 1970 | |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 1971 | void ClassLinker::LinkCode(ArtMethod* method, const OatFile::OatClass* oat_class, |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 1972 | uint32_t class_def_method_index) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1973 | Runtime* const runtime = Runtime::Current(); |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 1974 | if (runtime->IsAotCompiler()) { |
Nicolas Geoffray | 4fcdc94 | 2014-07-22 10:48:00 +0100 | [diff] [blame] | 1975 | // The following code only applies to a non-compiler runtime. |
| 1976 | return; |
| 1977 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1978 | // Method shouldn't have already been linked. |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 1979 | DCHECK(method->GetEntryPointFromQuickCompiledCode() == nullptr); |
Nicolas Geoffray | 4fcdc94 | 2014-07-22 10:48:00 +0100 | [diff] [blame] | 1980 | if (oat_class != nullptr) { |
| 1981 | // Every kind of method should at least get an invoke stub from the oat_method. |
| 1982 | // non-abstract methods also get their code pointers. |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 1983 | const OatFile::OatMethod oat_method = oat_class->GetOatMethod(class_def_method_index); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1984 | oat_method.LinkMethod(method); |
Nicolas Geoffray | 4fcdc94 | 2014-07-22 10:48:00 +0100 | [diff] [blame] | 1985 | } |
Brian Carlstrom | 92827a5 | 2011-10-10 15:50:01 -0700 | [diff] [blame] | 1986 | |
Jeff Hao | 1674363 | 2013-05-08 10:59:04 -0700 | [diff] [blame] | 1987 | // Install entry point from interpreter. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1988 | bool enter_interpreter = NeedsInterpreter(method, method->GetEntryPointFromQuickCompiledCode()); |
Jeff Hao | 1674363 | 2013-05-08 10:59:04 -0700 | [diff] [blame] | 1989 | |
Brian Carlstrom | 92827a5 | 2011-10-10 15:50:01 -0700 | [diff] [blame] | 1990 | if (method->IsAbstract()) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 1991 | method->SetEntryPointFromQuickCompiledCode(GetQuickToInterpreterBridge()); |
Brian Carlstrom | 92827a5 | 2011-10-10 15:50:01 -0700 | [diff] [blame] | 1992 | return; |
| 1993 | } |
Ian Rogers | 1984651 | 2012-02-24 11:42:47 -0800 | [diff] [blame] | 1994 | |
| 1995 | if (method->IsStatic() && !method->IsConstructor()) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1996 | // For static methods excluding the class initializer, install the trampoline. |
Sebastien Hertz | 7d658cf | 2013-07-09 10:56:11 +0200 | [diff] [blame] | 1997 | // It will be replaced by the proper entry point by ClassLinker::FixupStaticTrampolines |
| 1998 | // after initializing class (see ClassLinker::InitializeClass method). |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 1999 | method->SetEntryPointFromQuickCompiledCode(GetQuickResolutionStub()); |
Sebastien Hertz | 7d658cf | 2013-07-09 10:56:11 +0200 | [diff] [blame] | 2000 | } else if (enter_interpreter) { |
Andreas Gampe | bf6b92a | 2014-03-05 16:11:04 -0800 | [diff] [blame] | 2001 | if (!method->IsNative()) { |
| 2002 | // Set entry point from compiled code if there's no code or in interpreter only mode. |
| 2003 | method->SetEntryPointFromQuickCompiledCode(GetQuickToInterpreterBridge()); |
Andreas Gampe | bf6b92a | 2014-03-05 16:11:04 -0800 | [diff] [blame] | 2004 | } else { |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 2005 | method->SetEntryPointFromQuickCompiledCode(GetQuickGenericJniStub()); |
Andreas Gampe | bf6b92a | 2014-03-05 16:11:04 -0800 | [diff] [blame] | 2006 | } |
Ian Rogers | 0d6de04 | 2012-02-29 08:50:26 -0800 | [diff] [blame] | 2007 | } |
jeffhao | 26c0a1a | 2012-01-17 16:28:33 -0800 | [diff] [blame] | 2008 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2009 | if (method->IsNative()) { |
| 2010 | // Unregistering restores the dlsym lookup stub. |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 2011 | method->UnregisterNative(); |
Andreas Gampe | 9054683 | 2014-03-12 18:07:19 -0700 | [diff] [blame] | 2012 | |
| 2013 | if (enter_interpreter) { |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 2014 | // We have a native method here without code. Then it should have either the generic JNI |
| 2015 | // trampoline as entrypoint (non-static), or the resolution trampoline (static). |
| 2016 | // TODO: this doesn't handle all the cases where trampolines may be installed. |
| 2017 | const void* entry_point = method->GetEntryPointFromQuickCompiledCode(); |
| 2018 | DCHECK(IsQuickGenericJniStub(entry_point) || IsQuickResolutionStub(entry_point)); |
Andreas Gampe | 9054683 | 2014-03-12 18:07:19 -0700 | [diff] [blame] | 2019 | } |
Brian Carlstrom | 92827a5 | 2011-10-10 15:50:01 -0700 | [diff] [blame] | 2020 | } |
| 2021 | } |
| 2022 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 2023 | void ClassLinker::SetupClass(const DexFile& dex_file, |
| 2024 | const DexFile::ClassDef& dex_class_def, |
| 2025 | Handle<mirror::Class> klass, |
| 2026 | mirror::ClassLoader* class_loader) { |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2027 | CHECK(klass.Get() != nullptr); |
| 2028 | CHECK(klass->GetDexCache() != nullptr); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 2029 | CHECK_EQ(mirror::Class::kStatusNotReady, klass->GetStatus()); |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 2030 | const char* descriptor = dex_file.GetClassDescriptor(dex_class_def); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2031 | CHECK(descriptor != nullptr); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 2032 | |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 2033 | klass->SetClass(GetClassRoot(kJavaLangClass)); |
Andreas Gampe | 5182932 | 2014-08-25 15:05:04 -0700 | [diff] [blame] | 2034 | uint32_t access_flags = dex_class_def.GetJavaAccessFlags(); |
Brian Carlstrom | 8e3fb14 | 2013-10-09 21:00:27 -0700 | [diff] [blame] | 2035 | CHECK_EQ(access_flags & ~kAccJavaFlagsMask, 0U); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 2036 | klass->SetAccessFlags(access_flags); |
| 2037 | klass->SetClassLoader(class_loader); |
Ian Rogers | c2b4447 | 2011-12-14 21:17:17 -0800 | [diff] [blame] | 2038 | DCHECK_EQ(klass->GetPrimitiveType(), Primitive::kPrimNot); |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 2039 | mirror::Class::SetStatus(klass, mirror::Class::kStatusIdx, nullptr); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 2040 | |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 2041 | klass->SetDexClassDefIndex(dex_file.GetIndexForClassDef(dex_class_def)); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 2042 | klass->SetDexTypeIndex(dex_class_def.class_idx_); |
Mathieu Chartier | 91a6dc4 | 2014-12-01 10:31:15 -0800 | [diff] [blame] | 2043 | CHECK(klass->GetDexCacheStrings() != nullptr); |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 2044 | } |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 2045 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 2046 | void ClassLinker::LoadClass(Thread* self, |
| 2047 | const DexFile& dex_file, |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 2048 | const DexFile::ClassDef& dex_class_def, |
| 2049 | Handle<mirror::Class> klass) { |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 2050 | const uint8_t* class_data = dex_file.GetClassData(dex_class_def); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2051 | if (class_data == nullptr) { |
Ian Rogers | 0571d35 | 2011-11-03 19:51:38 -0700 | [diff] [blame] | 2052 | return; // no fields or methods - for example a marker interface |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 2053 | } |
Ian Rogers | 97b52f8 | 2014-08-14 11:34:07 -0700 | [diff] [blame] | 2054 | bool has_oat_class = false; |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 2055 | if (Runtime::Current()->IsStarted() && !Runtime::Current()->IsAotCompiler()) { |
Ian Rogers | 97b52f8 | 2014-08-14 11:34:07 -0700 | [diff] [blame] | 2056 | OatFile::OatClass oat_class = FindOatClass(dex_file, klass->GetDexClassDefIndex(), |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 2057 | &has_oat_class); |
Ian Rogers | 97b52f8 | 2014-08-14 11:34:07 -0700 | [diff] [blame] | 2058 | if (has_oat_class) { |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 2059 | LoadClassMembers(self, dex_file, class_data, klass, &oat_class); |
Ian Rogers | 97b52f8 | 2014-08-14 11:34:07 -0700 | [diff] [blame] | 2060 | } |
| 2061 | } |
| 2062 | if (!has_oat_class) { |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 2063 | LoadClassMembers(self, dex_file, class_data, klass, nullptr); |
Vladimir Marko | d3c5beb | 2014-04-11 16:32:51 +0100 | [diff] [blame] | 2064 | } |
| 2065 | } |
| 2066 | |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 2067 | LengthPrefixedArray<ArtField>* ClassLinker::AllocArtFieldArray(Thread* self, |
| 2068 | LinearAlloc* allocator, |
| 2069 | size_t length) { |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 2070 | if (length == 0) { |
| 2071 | return nullptr; |
| 2072 | } |
Vladimir Marko | cf36d49 | 2015-08-12 19:27:26 +0100 | [diff] [blame] | 2073 | // If the ArtField alignment changes, review all uses of LengthPrefixedArray<ArtField>. |
| 2074 | static_assert(alignof(ArtField) == 4, "ArtField alignment is expected to be 4."); |
| 2075 | size_t storage_size = LengthPrefixedArray<ArtField>::ComputeSize(length); |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 2076 | void* array_storage = allocator->Alloc(self, storage_size); |
Vladimir Marko | cf36d49 | 2015-08-12 19:27:26 +0100 | [diff] [blame] | 2077 | auto* ret = new(array_storage) LengthPrefixedArray<ArtField>(length); |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 2078 | CHECK(ret != nullptr); |
| 2079 | std::uninitialized_fill_n(&ret->At(0), length, ArtField()); |
| 2080 | return ret; |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 2081 | } |
| 2082 | |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 2083 | LengthPrefixedArray<ArtMethod>* ClassLinker::AllocArtMethodArray(Thread* self, |
| 2084 | LinearAlloc* allocator, |
| 2085 | size_t length) { |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 2086 | if (length == 0) { |
| 2087 | return nullptr; |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2088 | } |
Vladimir Marko | 1463285 | 2015-08-17 12:07:23 +0100 | [diff] [blame] | 2089 | const size_t method_alignment = ArtMethod::Alignment(image_pointer_size_); |
| 2090 | const size_t method_size = ArtMethod::Size(image_pointer_size_); |
Vladimir Marko | cf36d49 | 2015-08-12 19:27:26 +0100 | [diff] [blame] | 2091 | const size_t storage_size = |
| 2092 | LengthPrefixedArray<ArtMethod>::ComputeSize(length, method_size, method_alignment); |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 2093 | void* array_storage = allocator->Alloc(self, storage_size); |
Vladimir Marko | cf36d49 | 2015-08-12 19:27:26 +0100 | [diff] [blame] | 2094 | auto* ret = new (array_storage) LengthPrefixedArray<ArtMethod>(length); |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 2095 | CHECK(ret != nullptr); |
| 2096 | for (size_t i = 0; i < length; ++i) { |
Vladimir Marko | cf36d49 | 2015-08-12 19:27:26 +0100 | [diff] [blame] | 2097 | new(reinterpret_cast<void*>(&ret->At(i, method_size, method_alignment))) ArtMethod; |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 2098 | } |
| 2099 | return ret; |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2100 | } |
| 2101 | |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 2102 | LinearAlloc* ClassLinker::GetAllocatorForClassLoader(mirror::ClassLoader* class_loader) { |
| 2103 | if (class_loader == nullptr) { |
| 2104 | return Runtime::Current()->GetLinearAlloc(); |
| 2105 | } |
| 2106 | LinearAlloc* allocator = class_loader->GetAllocator(); |
| 2107 | DCHECK(allocator != nullptr); |
| 2108 | return allocator; |
| 2109 | } |
| 2110 | |
Mathieu Chartier | d57d454 | 2015-10-14 10:55:30 -0700 | [diff] [blame] | 2111 | LinearAlloc* ClassLinker::GetOrCreateAllocatorForClassLoader(mirror::ClassLoader* class_loader) { |
| 2112 | if (class_loader == nullptr) { |
| 2113 | return Runtime::Current()->GetLinearAlloc(); |
| 2114 | } |
| 2115 | WriterMutexLock mu(Thread::Current(), *Locks::classlinker_classes_lock_); |
| 2116 | LinearAlloc* allocator = class_loader->GetAllocator(); |
| 2117 | if (allocator == nullptr) { |
| 2118 | allocator = Runtime::Current()->CreateLinearAlloc(); |
| 2119 | class_loader->SetAllocator(allocator); |
| 2120 | } |
| 2121 | return allocator; |
| 2122 | } |
| 2123 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 2124 | void ClassLinker::LoadClassMembers(Thread* self, |
| 2125 | const DexFile& dex_file, |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 2126 | const uint8_t* class_data, |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 2127 | Handle<mirror::Class> klass, |
Vladimir Marko | d3c5beb | 2014-04-11 16:32:51 +0100 | [diff] [blame] | 2128 | const OatFile::OatClass* oat_class) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2129 | { |
| 2130 | // Note: We cannot have thread suspension until the field and method arrays are setup or else |
| 2131 | // Class::VisitFieldRoots may miss some fields or methods. |
| 2132 | ScopedAssertNoThreadSuspension nts(self, __FUNCTION__); |
| 2133 | // Load static fields. |
Vladimir Marko | 23682bf | 2015-06-24 14:28:03 +0100 | [diff] [blame] | 2134 | // We allow duplicate definitions of the same field in a class_data_item |
| 2135 | // but ignore the repeated indexes here, b/21868015. |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 2136 | LinearAlloc* const allocator = GetAllocatorForClassLoader(klass->GetClassLoader()); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2137 | ClassDataItemIterator it(dex_file, class_data); |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 2138 | LengthPrefixedArray<ArtField>* sfields = AllocArtFieldArray(self, |
| 2139 | allocator, |
| 2140 | it.NumStaticFields()); |
Vladimir Marko | 23682bf | 2015-06-24 14:28:03 +0100 | [diff] [blame] | 2141 | size_t num_sfields = 0; |
| 2142 | uint32_t last_field_idx = 0u; |
| 2143 | for (; it.HasNextStaticField(); it.Next()) { |
| 2144 | uint32_t field_idx = it.GetMemberIndex(); |
| 2145 | DCHECK_GE(field_idx, last_field_idx); // Ordering enforced by DexFileVerifier. |
| 2146 | if (num_sfields == 0 || LIKELY(field_idx > last_field_idx)) { |
| 2147 | DCHECK_LT(num_sfields, it.NumStaticFields()); |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 2148 | LoadField(it, klass, &sfields->At(num_sfields)); |
Vladimir Marko | 23682bf | 2015-06-24 14:28:03 +0100 | [diff] [blame] | 2149 | ++num_sfields; |
| 2150 | last_field_idx = field_idx; |
| 2151 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2152 | } |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 2153 | klass->SetSFieldsPtr(sfields); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2154 | DCHECK_EQ(klass->NumStaticFields(), num_sfields); |
| 2155 | // Load instance fields. |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 2156 | LengthPrefixedArray<ArtField>* ifields = AllocArtFieldArray(self, |
| 2157 | allocator, |
| 2158 | it.NumInstanceFields()); |
Vladimir Marko | 23682bf | 2015-06-24 14:28:03 +0100 | [diff] [blame] | 2159 | size_t num_ifields = 0u; |
| 2160 | last_field_idx = 0u; |
| 2161 | for (; it.HasNextInstanceField(); it.Next()) { |
| 2162 | uint32_t field_idx = it.GetMemberIndex(); |
| 2163 | DCHECK_GE(field_idx, last_field_idx); // Ordering enforced by DexFileVerifier. |
| 2164 | if (num_ifields == 0 || LIKELY(field_idx > last_field_idx)) { |
| 2165 | DCHECK_LT(num_ifields, it.NumInstanceFields()); |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 2166 | LoadField(it, klass, &ifields->At(num_ifields)); |
Vladimir Marko | 23682bf | 2015-06-24 14:28:03 +0100 | [diff] [blame] | 2167 | ++num_ifields; |
| 2168 | last_field_idx = field_idx; |
| 2169 | } |
| 2170 | } |
| 2171 | if (UNLIKELY(num_sfields != it.NumStaticFields()) || |
| 2172 | UNLIKELY(num_ifields != it.NumInstanceFields())) { |
| 2173 | LOG(WARNING) << "Duplicate fields in class " << PrettyDescriptor(klass.Get()) |
| 2174 | << " (unique static fields: " << num_sfields << "/" << it.NumStaticFields() |
| 2175 | << ", unique instance fields: " << num_ifields << "/" << it.NumInstanceFields() << ")"; |
| 2176 | // NOTE: Not shrinking the over-allocated sfields/ifields. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2177 | } |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 2178 | klass->SetIFieldsPtr(ifields); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2179 | DCHECK_EQ(klass->NumInstanceFields(), num_ifields); |
| 2180 | // Load methods. |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 2181 | klass->SetDirectMethodsPtr(AllocArtMethodArray(self, allocator, it.NumDirectMethods())); |
| 2182 | klass->SetVirtualMethodsPtr(AllocArtMethodArray(self, allocator, it.NumVirtualMethods())); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2183 | size_t class_def_method_index = 0; |
| 2184 | uint32_t last_dex_method_index = DexFile::kDexNoIndex; |
| 2185 | size_t last_class_def_method_index = 0; |
| 2186 | for (size_t i = 0; it.HasNextDirectMethod(); i++, it.Next()) { |
| 2187 | ArtMethod* method = klass->GetDirectMethodUnchecked(i, image_pointer_size_); |
| 2188 | LoadMethod(self, dex_file, it, klass, method); |
| 2189 | LinkCode(method, oat_class, class_def_method_index); |
| 2190 | uint32_t it_method_index = it.GetMemberIndex(); |
| 2191 | if (last_dex_method_index == it_method_index) { |
| 2192 | // duplicate case |
| 2193 | method->SetMethodIndex(last_class_def_method_index); |
| 2194 | } else { |
| 2195 | method->SetMethodIndex(class_def_method_index); |
| 2196 | last_dex_method_index = it_method_index; |
| 2197 | last_class_def_method_index = class_def_method_index; |
| 2198 | } |
| 2199 | class_def_method_index++; |
| 2200 | } |
| 2201 | for (size_t i = 0; it.HasNextVirtualMethod(); i++, it.Next()) { |
| 2202 | ArtMethod* method = klass->GetVirtualMethodUnchecked(i, image_pointer_size_); |
| 2203 | LoadMethod(self, dex_file, it, klass, method); |
| 2204 | DCHECK_EQ(class_def_method_index, it.NumDirectMethods() + i); |
| 2205 | LinkCode(method, oat_class, class_def_method_index); |
| 2206 | class_def_method_index++; |
| 2207 | } |
| 2208 | DCHECK(!it.HasNext()); |
Ian Rogers | 0571d35 | 2011-11-03 19:51:38 -0700 | [diff] [blame] | 2209 | } |
Mathieu Chartier | eb837eb | 2015-07-29 17:25:41 -0700 | [diff] [blame] | 2210 | // Ensure that the card is marked so that remembered sets pick up native roots. |
| 2211 | Runtime::Current()->GetHeap()->WriteBarrierEveryFieldOf(klass.Get()); |
Mathieu Chartier | f3f2a7a | 2015-04-14 15:43:10 -0700 | [diff] [blame] | 2212 | self->AllowThreadSuspension(); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 2213 | } |
| 2214 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 2215 | void ClassLinker::LoadField(const ClassDataItemIterator& it, |
| 2216 | Handle<mirror::Class> klass, |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 2217 | ArtField* dst) { |
| 2218 | const uint32_t field_idx = it.GetMemberIndex(); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 2219 | dst->SetDexFieldIndex(field_idx); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2220 | dst->SetDeclaringClass(klass.Get()); |
Andreas Gampe | 5182932 | 2014-08-25 15:05:04 -0700 | [diff] [blame] | 2221 | dst->SetAccessFlags(it.GetFieldAccessFlags()); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 2222 | } |
| 2223 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 2224 | void ClassLinker::LoadMethod(Thread* self, |
| 2225 | const DexFile& dex_file, |
| 2226 | const ClassDataItemIterator& it, |
| 2227 | Handle<mirror::Class> klass, |
| 2228 | ArtMethod* dst) { |
Ian Rogers | 1984651 | 2012-02-24 11:42:47 -0800 | [diff] [blame] | 2229 | uint32_t dex_method_idx = it.GetMemberIndex(); |
Ian Rogers | 1984651 | 2012-02-24 11:42:47 -0800 | [diff] [blame] | 2230 | const DexFile::MethodId& method_id = dex_file.GetMethodId(dex_method_idx); |
Ian Rogers | dfb325e | 2013-10-30 01:00:44 -0700 | [diff] [blame] | 2231 | const char* method_name = dex_file.StringDataByIdx(method_id.name_idx_); |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 2232 | |
Mathieu Chartier | 2d5f39e | 2014-09-19 17:52:37 -0700 | [diff] [blame] | 2233 | ScopedAssertNoThreadSuspension ants(self, "LoadMethod"); |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 2234 | dst->SetDexMethodIndex(dex_method_idx); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2235 | dst->SetDeclaringClass(klass.Get()); |
Ian Rogers | 0571d35 | 2011-11-03 19:51:38 -0700 | [diff] [blame] | 2236 | dst->SetCodeItemOffset(it.GetMethodCodeItemOffset()); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 2237 | |
Vladimir Marko | 05792b9 | 2015-08-03 11:56:49 +0100 | [diff] [blame] | 2238 | dst->SetDexCacheResolvedMethods(klass->GetDexCache()->GetResolvedMethods(), image_pointer_size_); |
| 2239 | dst->SetDexCacheResolvedTypes(klass->GetDexCache()->GetResolvedTypes(), image_pointer_size_); |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 2240 | |
Andreas Gampe | 5182932 | 2014-08-25 15:05:04 -0700 | [diff] [blame] | 2241 | uint32_t access_flags = it.GetMethodAccessFlags(); |
Ian Rogers | 241b5de | 2013-10-09 17:58:57 -0700 | [diff] [blame] | 2242 | |
Ian Rogers | dfb325e | 2013-10-30 01:00:44 -0700 | [diff] [blame] | 2243 | if (UNLIKELY(strcmp("finalize", method_name) == 0)) { |
Ian Rogers | 241b5de | 2013-10-09 17:58:57 -0700 | [diff] [blame] | 2244 | // Set finalizable flag on declaring class. |
Ian Rogers | dfb325e | 2013-10-30 01:00:44 -0700 | [diff] [blame] | 2245 | if (strcmp("V", dex_file.GetShorty(method_id.proto_idx_)) == 0) { |
| 2246 | // Void return type. |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2247 | if (klass->GetClassLoader() != nullptr) { // All non-boot finalizer methods are flagged. |
Ian Rogers | dfb325e | 2013-10-30 01:00:44 -0700 | [diff] [blame] | 2248 | klass->SetFinalizable(); |
| 2249 | } else { |
Ian Rogers | 1ff3c98 | 2014-08-12 02:30:58 -0700 | [diff] [blame] | 2250 | std::string temp; |
| 2251 | const char* klass_descriptor = klass->GetDescriptor(&temp); |
Ian Rogers | dfb325e | 2013-10-30 01:00:44 -0700 | [diff] [blame] | 2252 | // The Enum class declares a "final" finalize() method to prevent subclasses from |
| 2253 | // introducing a finalizer. We don't want to set the finalizable flag for Enum or its |
| 2254 | // subclasses, so we exclude it here. |
| 2255 | // We also want to avoid setting the flag on Object, where we know that finalize() is |
| 2256 | // empty. |
Ian Rogers | 1ff3c98 | 2014-08-12 02:30:58 -0700 | [diff] [blame] | 2257 | if (strcmp(klass_descriptor, "Ljava/lang/Object;") != 0 && |
| 2258 | strcmp(klass_descriptor, "Ljava/lang/Enum;") != 0) { |
Ian Rogers | 241b5de | 2013-10-09 17:58:57 -0700 | [diff] [blame] | 2259 | klass->SetFinalizable(); |
Ian Rogers | 241b5de | 2013-10-09 17:58:57 -0700 | [diff] [blame] | 2260 | } |
| 2261 | } |
| 2262 | } |
| 2263 | } else if (method_name[0] == '<') { |
| 2264 | // Fix broken access flags for initializers. Bug 11157540. |
Ian Rogers | dfb325e | 2013-10-30 01:00:44 -0700 | [diff] [blame] | 2265 | bool is_init = (strcmp("<init>", method_name) == 0); |
| 2266 | bool is_clinit = !is_init && (strcmp("<clinit>", method_name) == 0); |
Ian Rogers | 241b5de | 2013-10-09 17:58:57 -0700 | [diff] [blame] | 2267 | if (UNLIKELY(!is_init && !is_clinit)) { |
| 2268 | LOG(WARNING) << "Unexpected '<' at start of method name " << method_name; |
| 2269 | } else { |
| 2270 | if (UNLIKELY((access_flags & kAccConstructor) == 0)) { |
| 2271 | LOG(WARNING) << method_name << " didn't have expected constructor access flag in class " |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2272 | << PrettyDescriptor(klass.Get()) << " in dex file " << dex_file.GetLocation(); |
Ian Rogers | 241b5de | 2013-10-09 17:58:57 -0700 | [diff] [blame] | 2273 | access_flags |= kAccConstructor; |
| 2274 | } |
| 2275 | } |
| 2276 | } |
| 2277 | dst->SetAccessFlags(access_flags); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 2278 | } |
| 2279 | |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 2280 | void ClassLinker::AppendToBootClassPath(Thread* self, const DexFile& dex_file) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2281 | StackHandleScope<1> hs(self); |
Mathieu Chartier | d57d454 | 2015-10-14 10:55:30 -0700 | [diff] [blame] | 2282 | Handle<mirror::DexCache> dex_cache(hs.NewHandle(AllocDexCache( |
| 2283 | self, |
| 2284 | dex_file, |
| 2285 | Runtime::Current()->GetLinearAlloc()))); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2286 | CHECK(dex_cache.Get() != nullptr) << "Failed to allocate dex cache for " |
| 2287 | << dex_file.GetLocation(); |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 2288 | AppendToBootClassPath(dex_file, dex_cache); |
Brian Carlstrom | a663ea5 | 2011-08-19 23:33:41 -0700 | [diff] [blame] | 2289 | } |
| 2290 | |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 2291 | void ClassLinker::AppendToBootClassPath(const DexFile& dex_file, |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 2292 | Handle<mirror::DexCache> dex_cache) { |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2293 | CHECK(dex_cache.Get() != nullptr) << dex_file.GetLocation(); |
Brian Carlstrom | 9ea1cb1 | 2011-08-24 23:18:18 -0700 | [diff] [blame] | 2294 | boot_class_path_.push_back(&dex_file); |
Brian Carlstrom | a663ea5 | 2011-08-19 23:33:41 -0700 | [diff] [blame] | 2295 | RegisterDexFile(dex_file, dex_cache); |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 2296 | } |
| 2297 | |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 2298 | void ClassLinker::RegisterDexFileLocked(const DexFile& dex_file, |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 2299 | Handle<mirror::DexCache> dex_cache) { |
Mathieu Chartier | 673ed3d | 2015-08-28 14:56:43 -0700 | [diff] [blame] | 2300 | Thread* const self = Thread::Current(); |
| 2301 | dex_lock_.AssertExclusiveHeld(self); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2302 | CHECK(dex_cache.Get() != nullptr) << dex_file.GetLocation(); |
Brian Carlstrom | 7c3d13a | 2013-09-04 17:15:11 -0700 | [diff] [blame] | 2303 | CHECK(dex_cache->GetLocation()->Equals(dex_file.GetLocation())) |
| 2304 | << dex_cache->GetLocation()->ToModifiedUtf8() << " " << dex_file.GetLocation(); |
Mathieu Chartier | 673ed3d | 2015-08-28 14:56:43 -0700 | [diff] [blame] | 2305 | // Clean up pass to remove null dex caches. |
| 2306 | // Null dex caches can occur due to class unloading and we are lazily removing null entries. |
| 2307 | JavaVMExt* const vm = self->GetJniEnv()->vm; |
| 2308 | for (auto it = dex_caches_.begin(); it != dex_caches_.end();) { |
| 2309 | mirror::Object* dex_cache_root = self->DecodeJObject(*it); |
| 2310 | if (dex_cache_root == nullptr) { |
| 2311 | vm->DeleteWeakGlobalRef(self, *it); |
| 2312 | it = dex_caches_.erase(it); |
| 2313 | } else { |
| 2314 | ++it; |
| 2315 | } |
Brian Carlstrom | 81a9087 | 2015-08-28 09:07:14 -0700 | [diff] [blame] | 2316 | } |
Mathieu Chartier | 673ed3d | 2015-08-28 14:56:43 -0700 | [diff] [blame] | 2317 | dex_caches_.push_back(vm->AddWeakGlobalRef(self, dex_cache.Get())); |
| 2318 | dex_cache->SetDexFile(&dex_file); |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 2319 | } |
| 2320 | |
Mathieu Chartier | d57d454 | 2015-10-14 10:55:30 -0700 | [diff] [blame] | 2321 | mirror::DexCache* ClassLinker::RegisterDexFile(const DexFile& dex_file, LinearAlloc* linear_alloc) { |
Ian Rogers | 1f53934 | 2012-10-03 21:09:42 -0700 | [diff] [blame] | 2322 | Thread* self = Thread::Current(); |
Brian Carlstrom | 47d237a | 2011-10-18 15:08:33 -0700 | [diff] [blame] | 2323 | { |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 2324 | ReaderMutexLock mu(self, dex_lock_); |
Mathieu Chartier | 673ed3d | 2015-08-28 14:56:43 -0700 | [diff] [blame] | 2325 | mirror::DexCache* dex_cache = FindDexCacheLocked(self, dex_file, true); |
| 2326 | if (dex_cache != nullptr) { |
| 2327 | return dex_cache; |
Brian Carlstrom | 47d237a | 2011-10-18 15:08:33 -0700 | [diff] [blame] | 2328 | } |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 2329 | } |
Brian Carlstrom | 47d237a | 2011-10-18 15:08:33 -0700 | [diff] [blame] | 2330 | // Don't alloc while holding the lock, since allocation may need to |
| 2331 | // suspend all threads and another thread may need the dex_lock_ to |
| 2332 | // get to a suspend point. |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2333 | StackHandleScope<1> hs(self); |
Mathieu Chartier | d57d454 | 2015-10-14 10:55:30 -0700 | [diff] [blame] | 2334 | Handle<mirror::DexCache> h_dex_cache(hs.NewHandle(AllocDexCache(self, dex_file, linear_alloc))); |
Mathieu Chartier | 673ed3d | 2015-08-28 14:56:43 -0700 | [diff] [blame] | 2335 | WriterMutexLock mu(self, dex_lock_); |
| 2336 | mirror::DexCache* dex_cache = FindDexCacheLocked(self, dex_file, true); |
| 2337 | if (dex_cache != nullptr) { |
| 2338 | return dex_cache; |
Brian Carlstrom | 47d237a | 2011-10-18 15:08:33 -0700 | [diff] [blame] | 2339 | } |
Mathieu Chartier | 673ed3d | 2015-08-28 14:56:43 -0700 | [diff] [blame] | 2340 | if (h_dex_cache.Get() == nullptr) { |
| 2341 | self->AssertPendingOOMException(); |
| 2342 | return nullptr; |
| 2343 | } |
| 2344 | RegisterDexFileLocked(dex_file, h_dex_cache); |
| 2345 | return h_dex_cache.Get(); |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 2346 | } |
| 2347 | |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 2348 | void ClassLinker::RegisterDexFile(const DexFile& dex_file, |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 2349 | Handle<mirror::DexCache> dex_cache) { |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 2350 | WriterMutexLock mu(Thread::Current(), dex_lock_); |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 2351 | RegisterDexFileLocked(dex_file, dex_cache); |
| 2352 | } |
| 2353 | |
Mathieu Chartier | 673ed3d | 2015-08-28 14:56:43 -0700 | [diff] [blame] | 2354 | mirror::DexCache* ClassLinker::FindDexCache(Thread* self, |
| 2355 | const DexFile& dex_file, |
| 2356 | bool allow_failure) { |
| 2357 | ReaderMutexLock mu(self, dex_lock_); |
| 2358 | return FindDexCacheLocked(self, dex_file, allow_failure); |
| 2359 | } |
| 2360 | |
| 2361 | mirror::DexCache* ClassLinker::FindDexCacheLocked(Thread* self, |
| 2362 | const DexFile& dex_file, |
| 2363 | bool allow_failure) { |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 2364 | // Search assuming unique-ness of dex file. |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 2365 | for (jweak weak_root : dex_caches_) { |
Mathieu Chartier | 4843bd5 | 2015-10-01 17:08:44 -0700 | [diff] [blame] | 2366 | mirror::DexCache* dex_cache = down_cast<mirror::DexCache*>(self->DecodeJObject(weak_root)); |
Mathieu Chartier | ca33089 | 2015-09-01 20:00:10 -0700 | [diff] [blame] | 2367 | if (dex_cache != nullptr && dex_cache->GetDexFile() == &dex_file) { |
| 2368 | return dex_cache; |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 2369 | } |
| 2370 | } |
Mathieu Chartier | 673ed3d | 2015-08-28 14:56:43 -0700 | [diff] [blame] | 2371 | if (allow_failure) { |
| 2372 | return nullptr; |
| 2373 | } |
Mathieu Chartier | ac8f439 | 2015-08-27 13:54:20 -0700 | [diff] [blame] | 2374 | std::string location(dex_file.GetLocation()); |
Brian Carlstrom | 81a9087 | 2015-08-28 09:07:14 -0700 | [diff] [blame] | 2375 | // Failure, dump diagnostic and abort. |
Mathieu Chartier | 673ed3d | 2015-08-28 14:56:43 -0700 | [diff] [blame] | 2376 | for (jobject weak_root : dex_caches_) { |
| 2377 | mirror::DexCache* dex_cache = down_cast<mirror::DexCache*>(self->DecodeJObject(weak_root)); |
| 2378 | if (dex_cache != nullptr) { |
| 2379 | LOG(ERROR) << "Registered dex file " << dex_cache->GetDexFile()->GetLocation(); |
| 2380 | } |
Brian Carlstrom | 81a9087 | 2015-08-28 09:07:14 -0700 | [diff] [blame] | 2381 | } |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 2382 | LOG(FATAL) << "Failed to find DexCache for DexFile " << location; |
Ian Rogers | e0a02da | 2014-12-02 14:10:53 -0800 | [diff] [blame] | 2383 | UNREACHABLE(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 2384 | } |
| 2385 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2386 | void ClassLinker::FixupDexCaches(ArtMethod* resolution_method) { |
Mathieu Chartier | 673ed3d | 2015-08-28 14:56:43 -0700 | [diff] [blame] | 2387 | Thread* const self = Thread::Current(); |
| 2388 | ReaderMutexLock mu(self, dex_lock_); |
| 2389 | for (jobject weak_root : dex_caches_) { |
| 2390 | mirror::DexCache* dex_cache = down_cast<mirror::DexCache*>(self->DecodeJObject(weak_root)); |
| 2391 | if (dex_cache != nullptr) { |
| 2392 | dex_cache->Fixup(resolution_method, image_pointer_size_); |
| 2393 | } |
Ian Rogers | 1984651 | 2012-02-24 11:42:47 -0800 | [diff] [blame] | 2394 | } |
| 2395 | } |
| 2396 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 2397 | mirror::Class* ClassLinker::CreatePrimitiveClass(Thread* self, Primitive::Type type) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2398 | mirror::Class* klass = AllocClass(self, mirror::Class::PrimitiveClassSize(image_pointer_size_)); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2399 | if (UNLIKELY(klass == nullptr)) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2400 | self->AssertPendingOOMException(); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2401 | return nullptr; |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 2402 | } |
| 2403 | return InitializePrimitiveClass(klass, type); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 2404 | } |
| 2405 | |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 2406 | mirror::Class* ClassLinker::InitializePrimitiveClass(mirror::Class* primitive_class, |
| 2407 | Primitive::Type type) { |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2408 | CHECK(primitive_class != nullptr); |
Ian Rogers | 1f53934 | 2012-10-03 21:09:42 -0700 | [diff] [blame] | 2409 | // Must hold lock on object when initializing. |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2410 | Thread* self = Thread::Current(); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2411 | StackHandleScope<1> hs(self); |
| 2412 | Handle<mirror::Class> h_class(hs.NewHandle(primitive_class)); |
Mathieu Chartier | db2633c | 2014-05-16 09:59:29 -0700 | [diff] [blame] | 2413 | ObjectLock<mirror::Class> lock(self, h_class); |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 2414 | h_class->SetAccessFlags(kAccPublic | kAccFinal | kAccAbstract); |
| 2415 | h_class->SetPrimitiveType(type); |
| 2416 | mirror::Class::SetStatus(h_class, mirror::Class::kStatusInitialized, self); |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2417 | const char* descriptor = Primitive::Descriptor(type); |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 2418 | mirror::Class* existing = InsertClass(descriptor, h_class.Get(), |
Mathieu Chartier | e7c9a8c | 2014-11-06 16:35:45 -0800 | [diff] [blame] | 2419 | ComputeModifiedUtf8Hash(descriptor)); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2420 | CHECK(existing == nullptr) << "InitPrimitiveClass(" << type << ") failed"; |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 2421 | return h_class.Get(); |
Carl Shapiro | 565f507 | 2011-07-10 13:39:43 -0700 | [diff] [blame] | 2422 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 2423 | |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 2424 | // Create an array class (i.e. the class object for the array, not the |
| 2425 | // array itself). "descriptor" looks like "[C" or "[[[[B" or |
| 2426 | // "[Ljava/lang/String;". |
| 2427 | // |
| 2428 | // If "descriptor" refers to an array of primitives, look up the |
| 2429 | // primitive type's internally-generated class object. |
| 2430 | // |
Brian Carlstrom | 5b8e4c8 | 2011-09-18 01:38:59 -0700 | [diff] [blame] | 2431 | // "class_loader" is the class loader of the class that's referring to |
| 2432 | // us. It's used to ensure that we're looking for the element type in |
| 2433 | // the right context. It does NOT become the class loader for the |
| 2434 | // array class; that always comes from the base element class. |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 2435 | // |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 2436 | // Returns null with an exception raised on failure. |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 2437 | mirror::Class* ClassLinker::CreateArrayClass(Thread* self, const char* descriptor, size_t hash, |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 2438 | Handle<mirror::ClassLoader> class_loader) { |
Brian Carlstrom | 5b8e4c8 | 2011-09-18 01:38:59 -0700 | [diff] [blame] | 2439 | // Identify the underlying component type |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2440 | CHECK_EQ('[', descriptor[0]); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2441 | StackHandleScope<2> hs(self); |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 2442 | MutableHandle<mirror::Class> component_type(hs.NewHandle(FindClass(self, descriptor + 1, |
| 2443 | class_loader))); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2444 | if (component_type.Get() == nullptr) { |
Mathieu Chartier | c0a9ea4 | 2014-02-03 16:36:49 -0800 | [diff] [blame] | 2445 | DCHECK(self->IsExceptionPending()); |
Andreas Gampe | dc13d7d | 2014-07-23 20:18:36 -0700 | [diff] [blame] | 2446 | // We need to accept erroneous classes as component types. |
Mathieu Chartier | e7c9a8c | 2014-11-06 16:35:45 -0800 | [diff] [blame] | 2447 | const size_t component_hash = ComputeModifiedUtf8Hash(descriptor + 1); |
| 2448 | component_type.Assign(LookupClass(self, descriptor + 1, component_hash, class_loader.Get())); |
Andreas Gampe | dc13d7d | 2014-07-23 20:18:36 -0700 | [diff] [blame] | 2449 | if (component_type.Get() == nullptr) { |
| 2450 | DCHECK(self->IsExceptionPending()); |
| 2451 | return nullptr; |
| 2452 | } else { |
| 2453 | self->ClearException(); |
| 2454 | } |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2455 | } |
Ian Rogers | 2d10b20 | 2014-05-12 19:15:18 -0700 | [diff] [blame] | 2456 | if (UNLIKELY(component_type->IsPrimitiveVoid())) { |
| 2457 | ThrowNoClassDefFoundError("Attempt to create array of void primitive type"); |
| 2458 | return nullptr; |
| 2459 | } |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2460 | // See if the component type is already loaded. Array classes are |
| 2461 | // always associated with the class loader of their underlying |
| 2462 | // element type -- an array of Strings goes with the loader for |
| 2463 | // java/lang/String -- so we need to look for it there. (The |
| 2464 | // caller should have checked for the existence of the class |
| 2465 | // before calling here, but they did so with *their* class loader, |
| 2466 | // not the component type's loader.) |
| 2467 | // |
| 2468 | // If we find it, the caller adds "loader" to the class' initiating |
| 2469 | // loader list, which should prevent us from going through this again. |
| 2470 | // |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 2471 | // This call is unnecessary if "loader" and "component_type->GetClassLoader()" |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2472 | // are the same, because our caller (FindClass) just did the |
| 2473 | // lookup. (Even if we get this wrong we still have correct behavior, |
| 2474 | // because we effectively do this lookup again when we add the new |
| 2475 | // class to the hash table --- necessary because of possible races with |
| 2476 | // other threads.) |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2477 | if (class_loader.Get() != component_type->GetClassLoader()) { |
Mathieu Chartier | e7c9a8c | 2014-11-06 16:35:45 -0800 | [diff] [blame] | 2478 | mirror::Class* new_class = LookupClass(self, descriptor, hash, component_type->GetClassLoader()); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2479 | if (new_class != nullptr) { |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 2480 | return new_class; |
| 2481 | } |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2482 | } |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 2483 | |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2484 | // Fill out the fields in the Class. |
| 2485 | // |
| 2486 | // It is possible to execute some methods against arrays, because |
| 2487 | // all arrays are subclasses of java_lang_Object_, so we need to set |
| 2488 | // up a vtable. We can just point at the one in java_lang_Object_. |
| 2489 | // |
| 2490 | // Array classes are simple enough that we don't need to do a full |
| 2491 | // link step. |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2492 | auto new_class = hs.NewHandle<mirror::Class>(nullptr); |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2493 | if (UNLIKELY(!init_done_)) { |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 2494 | // Classes that were hand created, ie not by FindSystemClass |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2495 | if (strcmp(descriptor, "[Ljava/lang/Class;") == 0) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2496 | new_class.Assign(GetClassRoot(kClassArrayClass)); |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2497 | } else if (strcmp(descriptor, "[Ljava/lang/Object;") == 0) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2498 | new_class.Assign(GetClassRoot(kObjectArrayClass)); |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 2499 | } else if (strcmp(descriptor, GetClassRootDescriptor(kJavaLangStringArrayClass)) == 0) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2500 | new_class.Assign(GetClassRoot(kJavaLangStringArrayClass)); |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2501 | } else if (strcmp(descriptor, "[C") == 0) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2502 | new_class.Assign(GetClassRoot(kCharArrayClass)); |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2503 | } else if (strcmp(descriptor, "[I") == 0) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2504 | new_class.Assign(GetClassRoot(kIntArrayClass)); |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 2505 | } else if (strcmp(descriptor, "[J") == 0) { |
| 2506 | new_class.Assign(GetClassRoot(kLongArrayClass)); |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2507 | } |
| 2508 | } |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2509 | if (new_class.Get() == nullptr) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2510 | new_class.Assign(AllocClass(self, mirror::Array::ClassSize(image_pointer_size_))); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2511 | if (new_class.Get() == nullptr) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2512 | self->AssertPendingOOMException(); |
Mathieu Chartier | c0a9ea4 | 2014-02-03 16:36:49 -0800 | [diff] [blame] | 2513 | return nullptr; |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2514 | } |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2515 | new_class->SetComponentType(component_type.Get()); |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2516 | } |
Mathieu Chartier | db2633c | 2014-05-16 09:59:29 -0700 | [diff] [blame] | 2517 | ObjectLock<mirror::Class> lock(self, new_class); // Must hold lock on object when initializing. |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2518 | DCHECK(new_class->GetComponentType() != nullptr); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 2519 | mirror::Class* java_lang_Object = GetClassRoot(kJavaLangObject); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 2520 | new_class->SetSuperClass(java_lang_Object); |
| 2521 | new_class->SetVTable(java_lang_Object->GetVTable()); |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 2522 | new_class->SetPrimitiveType(Primitive::kPrimNot); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 2523 | new_class->SetClassLoader(component_type->GetClassLoader()); |
Mathieu Chartier | 52a7f5c | 2015-08-18 18:35:52 -0700 | [diff] [blame] | 2524 | if (component_type->IsPrimitive()) { |
| 2525 | new_class->SetClassFlags(mirror::kClassFlagNoReferenceFields); |
| 2526 | } else { |
| 2527 | new_class->SetClassFlags(mirror::kClassFlagObjectArray); |
| 2528 | } |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 2529 | mirror::Class::SetStatus(new_class, mirror::Class::kStatusLoaded, self); |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 2530 | { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2531 | ArtMethod* imt[mirror::Class::kImtSize]; |
| 2532 | std::fill_n(imt, arraysize(imt), Runtime::Current()->GetImtUnimplementedMethod()); |
| 2533 | new_class->PopulateEmbeddedImtAndVTable(imt, image_pointer_size_); |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 2534 | } |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 2535 | mirror::Class::SetStatus(new_class, mirror::Class::kStatusInitialized, self); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 2536 | // don't need to set new_class->SetObjectSize(..) |
Brian Carlstrom | 9cff8e1 | 2011-08-18 16:47:29 -0700 | [diff] [blame] | 2537 | // because Object::SizeOf delegates to Array::SizeOf |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2538 | |
| 2539 | |
| 2540 | // All arrays have java/lang/Cloneable and java/io/Serializable as |
| 2541 | // interfaces. We need to set that up here, so that stuff like |
| 2542 | // "instanceof" works right. |
| 2543 | // |
| 2544 | // Note: The GC could run during the call to FindSystemClass, |
| 2545 | // so we need to make sure the class object is GC-valid while we're in |
| 2546 | // there. Do this by clearing the interface list so the GC will just |
| 2547 | // think that the entries are null. |
| 2548 | |
| 2549 | |
| 2550 | // Use the single, global copies of "interfaces" and "iftable" |
| 2551 | // (remember not to free them for arrays). |
Hiroshi Yamauchi | e9e3e69 | 2014-06-24 14:31:37 -0700 | [diff] [blame] | 2552 | { |
Hiroshi Yamauchi | 94f7b49 | 2014-07-22 18:08:23 -0700 | [diff] [blame] | 2553 | mirror::IfTable* array_iftable = array_iftable_.Read(); |
Hiroshi Yamauchi | e9e3e69 | 2014-06-24 14:31:37 -0700 | [diff] [blame] | 2554 | CHECK(array_iftable != nullptr); |
| 2555 | new_class->SetIfTable(array_iftable); |
| 2556 | } |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2557 | |
Elliott Hughes | 00626c2 | 2013-06-14 15:04:14 -0700 | [diff] [blame] | 2558 | // Inherit access flags from the component type. |
| 2559 | int access_flags = new_class->GetComponentType()->GetAccessFlags(); |
| 2560 | // Lose any implementation detail flags; in particular, arrays aren't finalizable. |
| 2561 | access_flags &= kAccJavaFlagsMask; |
| 2562 | // Arrays can't be used as a superclass or interface, so we want to add "abstract final" |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2563 | // and remove "interface". |
Elliott Hughes | 00626c2 | 2013-06-14 15:04:14 -0700 | [diff] [blame] | 2564 | access_flags |= kAccAbstract | kAccFinal; |
| 2565 | access_flags &= ~kAccInterface; |
| 2566 | |
| 2567 | new_class->SetAccessFlags(access_flags); |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2568 | |
Mathieu Chartier | e7c9a8c | 2014-11-06 16:35:45 -0800 | [diff] [blame] | 2569 | mirror::Class* existing = InsertClass(descriptor, new_class.Get(), hash); |
Mathieu Chartier | c0a9ea4 | 2014-02-03 16:36:49 -0800 | [diff] [blame] | 2570 | if (existing == nullptr) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2571 | return new_class.Get(); |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2572 | } |
| 2573 | // Another thread must have loaded the class after we |
| 2574 | // started but before we finished. Abandon what we've |
| 2575 | // done. |
| 2576 | // |
| 2577 | // (Yes, this happens.) |
| 2578 | |
Brian Carlstrom | 07bb855 | 2012-01-18 22:10:50 -0800 | [diff] [blame] | 2579 | return existing; |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 2580 | } |
| 2581 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 2582 | mirror::Class* ClassLinker::FindPrimitiveClass(char type) { |
Ian Rogers | 62f0512 | 2014-03-21 11:21:29 -0700 | [diff] [blame] | 2583 | switch (type) { |
| 2584 | case 'B': |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2585 | return GetClassRoot(kPrimitiveByte); |
Ian Rogers | 62f0512 | 2014-03-21 11:21:29 -0700 | [diff] [blame] | 2586 | case 'C': |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2587 | return GetClassRoot(kPrimitiveChar); |
Ian Rogers | 62f0512 | 2014-03-21 11:21:29 -0700 | [diff] [blame] | 2588 | case 'D': |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2589 | return GetClassRoot(kPrimitiveDouble); |
Ian Rogers | 62f0512 | 2014-03-21 11:21:29 -0700 | [diff] [blame] | 2590 | case 'F': |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2591 | return GetClassRoot(kPrimitiveFloat); |
Ian Rogers | 62f0512 | 2014-03-21 11:21:29 -0700 | [diff] [blame] | 2592 | case 'I': |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2593 | return GetClassRoot(kPrimitiveInt); |
Ian Rogers | 62f0512 | 2014-03-21 11:21:29 -0700 | [diff] [blame] | 2594 | case 'J': |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2595 | return GetClassRoot(kPrimitiveLong); |
Ian Rogers | 62f0512 | 2014-03-21 11:21:29 -0700 | [diff] [blame] | 2596 | case 'S': |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2597 | return GetClassRoot(kPrimitiveShort); |
Ian Rogers | 62f0512 | 2014-03-21 11:21:29 -0700 | [diff] [blame] | 2598 | case 'Z': |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2599 | return GetClassRoot(kPrimitiveBoolean); |
Ian Rogers | 62f0512 | 2014-03-21 11:21:29 -0700 | [diff] [blame] | 2600 | case 'V': |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 2601 | return GetClassRoot(kPrimitiveVoid); |
Ian Rogers | 62f0512 | 2014-03-21 11:21:29 -0700 | [diff] [blame] | 2602 | default: |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 2603 | break; |
Carl Shapiro | 744ad05 | 2011-08-06 15:53:36 -0700 | [diff] [blame] | 2604 | } |
Elliott Hughes | bd93599 | 2011-08-22 11:59:34 -0700 | [diff] [blame] | 2605 | std::string printable_type(PrintableChar(type)); |
Elliott Hughes | 4a2b417 | 2011-09-20 17:08:25 -0700 | [diff] [blame] | 2606 | ThrowNoClassDefFoundError("Not a primitive type: %s", printable_type.c_str()); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2607 | return nullptr; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 2608 | } |
| 2609 | |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 2610 | mirror::Class* ClassLinker::InsertClass(const char* descriptor, mirror::Class* klass, size_t hash) { |
Elliott Hughes | 4dd9b4d | 2011-12-12 18:29:24 -0800 | [diff] [blame] | 2611 | if (VLOG_IS_ON(class_linker)) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 2612 | mirror::DexCache* dex_cache = klass->GetDexCache(); |
Brian Carlstrom | ae82698 | 2011-11-09 01:33:42 -0800 | [diff] [blame] | 2613 | std::string source; |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2614 | if (dex_cache != nullptr) { |
Brian Carlstrom | ae82698 | 2011-11-09 01:33:42 -0800 | [diff] [blame] | 2615 | source += " from "; |
| 2616 | source += dex_cache->GetLocation()->ToModifiedUtf8(); |
| 2617 | } |
| 2618 | LOG(INFO) << "Loaded class " << descriptor << source; |
| 2619 | } |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 2620 | WriterMutexLock mu(Thread::Current(), *Locks::classlinker_classes_lock_); |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 2621 | mirror::ClassLoader* const class_loader = klass->GetClassLoader(); |
| 2622 | ClassTable* const class_table = InsertClassTableForClassLoader(class_loader); |
| 2623 | mirror::Class* existing = class_table->Lookup(descriptor, hash); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2624 | if (existing != nullptr) { |
Brian Carlstrom | 07bb855 | 2012-01-18 22:10:50 -0800 | [diff] [blame] | 2625 | return existing; |
Ian Rogers | 5d76c43 | 2011-10-31 21:42:49 -0700 | [diff] [blame] | 2626 | } |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 2627 | if (kIsDebugBuild && !klass->IsTemp() && class_loader == nullptr && |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 2628 | dex_cache_image_class_lookup_required_) { |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2629 | // Check a class loaded with the system class loader matches one in the image if the class |
| 2630 | // is in the image. |
| 2631 | existing = LookupClassFromImage(descriptor); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2632 | if (existing != nullptr) { |
Mathieu Chartier | c2e2062 | 2014-11-03 11:41:47 -0800 | [diff] [blame] | 2633 | CHECK_EQ(klass, existing); |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2634 | } |
| 2635 | } |
Mathieu Chartier | 4e30541 | 2014-02-19 10:54:44 -0800 | [diff] [blame] | 2636 | VerifyObject(klass); |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 2637 | class_table->InsertWithHash(klass, hash); |
Mathieu Chartier | e4275c0 | 2015-08-06 15:34:15 -0700 | [diff] [blame] | 2638 | if (class_loader != nullptr) { |
| 2639 | // This is necessary because we need to have the card dirtied for remembered sets. |
| 2640 | Runtime::Current()->GetHeap()->WriteBarrierEveryFieldOf(class_loader); |
| 2641 | } |
Mathieu Chartier | 893263b | 2014-03-04 11:07:42 -0800 | [diff] [blame] | 2642 | if (log_new_class_table_roots_) { |
Mathieu Chartier | c2e2062 | 2014-11-03 11:41:47 -0800 | [diff] [blame] | 2643 | new_class_roots_.push_back(GcRoot<mirror::Class>(klass)); |
Mathieu Chartier | 893263b | 2014-03-04 11:07:42 -0800 | [diff] [blame] | 2644 | } |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2645 | return nullptr; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 2646 | } |
| 2647 | |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 2648 | void ClassLinker::UpdateClassVirtualMethods(mirror::Class* klass, |
| 2649 | LengthPrefixedArray<ArtMethod>* new_methods) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2650 | klass->SetVirtualMethodsPtr(new_methods); |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 2651 | // Need to mark the card so that the remembered sets and mod union tables get updated. |
Mathieu Chartier | eb837eb | 2015-07-29 17:25:41 -0700 | [diff] [blame] | 2652 | Runtime::Current()->GetHeap()->WriteBarrierEveryFieldOf(klass); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2653 | } |
| 2654 | |
Mathieu Chartier | c2e2062 | 2014-11-03 11:41:47 -0800 | [diff] [blame] | 2655 | bool ClassLinker::RemoveClass(const char* descriptor, mirror::ClassLoader* class_loader) { |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 2656 | WriterMutexLock mu(Thread::Current(), *Locks::classlinker_classes_lock_); |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 2657 | ClassTable* const class_table = ClassTableForClassLoader(class_loader); |
| 2658 | return class_table != nullptr && class_table->Remove(descriptor); |
Brian Carlstrom | ae82698 | 2011-11-09 01:33:42 -0800 | [diff] [blame] | 2659 | } |
| 2660 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 2661 | mirror::Class* ClassLinker::LookupClass(Thread* self, |
| 2662 | const char* descriptor, |
| 2663 | size_t hash, |
Mathieu Chartier | c2e2062 | 2014-11-03 11:41:47 -0800 | [diff] [blame] | 2664 | mirror::ClassLoader* class_loader) { |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2665 | { |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 2666 | ReaderMutexLock mu(self, *Locks::classlinker_classes_lock_); |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 2667 | ClassTable* const class_table = ClassTableForClassLoader(class_loader); |
| 2668 | if (class_table != nullptr) { |
| 2669 | mirror::Class* result = class_table->Lookup(descriptor, hash); |
| 2670 | if (result != nullptr) { |
| 2671 | return result; |
| 2672 | } |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2673 | } |
Sameer Abu Asal | 2c6de22 | 2013-05-02 17:38:59 -0700 | [diff] [blame] | 2674 | } |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2675 | if (class_loader != nullptr || !dex_cache_image_class_lookup_required_) { |
| 2676 | return nullptr; |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 2677 | } |
| 2678 | // Lookup failed but need to search dex_caches_. |
| 2679 | mirror::Class* result = LookupClassFromImage(descriptor); |
| 2680 | if (result != nullptr) { |
| 2681 | result = InsertClass(descriptor, result, hash); |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2682 | } else { |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 2683 | // Searching the image dex files/caches failed, we don't want to get into this situation |
| 2684 | // often as map searches are faster, so after kMaxFailedDexCacheLookups move all image |
| 2685 | // classes into the class table. |
| 2686 | constexpr uint32_t kMaxFailedDexCacheLookups = 1000; |
| 2687 | if (++failed_dex_cache_class_lookups_ > kMaxFailedDexCacheLookups) { |
| 2688 | MoveImageClassesToClassTable(); |
Ian Rogers | 5d76c43 | 2011-10-31 21:42:49 -0700 | [diff] [blame] | 2689 | } |
| 2690 | } |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 2691 | return result; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 2692 | } |
| 2693 | |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2694 | static mirror::ObjectArray<mirror::DexCache>* GetImageDexCaches() |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 2695 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2696 | gc::space::ImageSpace* image = Runtime::Current()->GetHeap()->GetImageSpace(); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2697 | CHECK(image != nullptr); |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2698 | mirror::Object* root = image->GetImageHeader().GetImageRoot(ImageHeader::kDexCaches); |
| 2699 | return root->AsObjectArray<mirror::DexCache>(); |
| 2700 | } |
| 2701 | |
| 2702 | void ClassLinker::MoveImageClassesToClassTable() { |
| 2703 | Thread* self = Thread::Current(); |
| 2704 | WriterMutexLock mu(self, *Locks::classlinker_classes_lock_); |
| 2705 | if (!dex_cache_image_class_lookup_required_) { |
| 2706 | return; // All dex cache classes are already in the class table. |
| 2707 | } |
Mathieu Chartier | 2d5f39e | 2014-09-19 17:52:37 -0700 | [diff] [blame] | 2708 | ScopedAssertNoThreadSuspension ants(self, "Moving image classes to class table"); |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2709 | mirror::ObjectArray<mirror::DexCache>* dex_caches = GetImageDexCaches(); |
Ian Rogers | 1ff3c98 | 2014-08-12 02:30:58 -0700 | [diff] [blame] | 2710 | std::string temp; |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 2711 | ClassTable* const class_table = InsertClassTableForClassLoader(nullptr); |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2712 | for (int32_t i = 0; i < dex_caches->GetLength(); i++) { |
| 2713 | mirror::DexCache* dex_cache = dex_caches->Get(i); |
Vladimir Marko | 05792b9 | 2015-08-03 11:56:49 +0100 | [diff] [blame] | 2714 | GcRoot<mirror::Class>* types = dex_cache->GetResolvedTypes(); |
| 2715 | for (int32_t j = 0, num_types = dex_cache->NumResolvedTypes(); j < num_types; j++) { |
| 2716 | mirror::Class* klass = types[j].Read(); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2717 | if (klass != nullptr) { |
| 2718 | DCHECK(klass->GetClassLoader() == nullptr); |
Ian Rogers | 1ff3c98 | 2014-08-12 02:30:58 -0700 | [diff] [blame] | 2719 | const char* descriptor = klass->GetDescriptor(&temp); |
Mathieu Chartier | e7c9a8c | 2014-11-06 16:35:45 -0800 | [diff] [blame] | 2720 | size_t hash = ComputeModifiedUtf8Hash(descriptor); |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 2721 | mirror::Class* existing = class_table->Lookup(descriptor, hash); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2722 | if (existing != nullptr) { |
Mathieu Chartier | c2e2062 | 2014-11-03 11:41:47 -0800 | [diff] [blame] | 2723 | CHECK_EQ(existing, klass) << PrettyClassAndClassLoader(existing) << " != " |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2724 | << PrettyClassAndClassLoader(klass); |
| 2725 | } else { |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 2726 | class_table->Insert(klass); |
Mathieu Chartier | 893263b | 2014-03-04 11:07:42 -0800 | [diff] [blame] | 2727 | if (log_new_class_table_roots_) { |
Mathieu Chartier | c2e2062 | 2014-11-03 11:41:47 -0800 | [diff] [blame] | 2728 | new_class_roots_.push_back(GcRoot<mirror::Class>(klass)); |
Mathieu Chartier | 893263b | 2014-03-04 11:07:42 -0800 | [diff] [blame] | 2729 | } |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2730 | } |
| 2731 | } |
Elliott Hughes | 6fa602d | 2011-12-02 17:54:25 -0800 | [diff] [blame] | 2732 | } |
| 2733 | } |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2734 | dex_cache_image_class_lookup_required_ = false; |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2735 | } |
| 2736 | |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 2737 | class MoveClassTableToPreZygoteVisitor : public ClassLoaderVisitor { |
| 2738 | public: |
| 2739 | explicit MoveClassTableToPreZygoteVisitor() {} |
| 2740 | |
| 2741 | void Visit(mirror::ClassLoader* class_loader) |
| 2742 | REQUIRES(Locks::classlinker_classes_lock_) |
| 2743 | SHARED_REQUIRES(Locks::mutator_lock_) OVERRIDE { |
| 2744 | ClassTable* const class_table = class_loader->GetClassTable(); |
Mathieu Chartier | 6b06953 | 2015-08-05 15:08:12 -0700 | [diff] [blame] | 2745 | if (class_table != nullptr) { |
| 2746 | class_table->FreezeSnapshot(); |
| 2747 | } |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 2748 | } |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 2749 | }; |
| 2750 | |
| 2751 | void ClassLinker::MoveClassTableToPreZygote() { |
| 2752 | WriterMutexLock mu(Thread::Current(), *Locks::classlinker_classes_lock_); |
| 2753 | boot_class_table_.FreezeSnapshot(); |
| 2754 | MoveClassTableToPreZygoteVisitor visitor; |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 2755 | VisitClassLoaders(&visitor); |
Mathieu Chartier | c2e2062 | 2014-11-03 11:41:47 -0800 | [diff] [blame] | 2756 | } |
| 2757 | |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2758 | mirror::Class* ClassLinker::LookupClassFromImage(const char* descriptor) { |
Mathieu Chartier | 2d5f39e | 2014-09-19 17:52:37 -0700 | [diff] [blame] | 2759 | ScopedAssertNoThreadSuspension ants(Thread::Current(), "Image class lookup"); |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2760 | mirror::ObjectArray<mirror::DexCache>* dex_caches = GetImageDexCaches(); |
| 2761 | for (int32_t i = 0; i < dex_caches->GetLength(); ++i) { |
| 2762 | mirror::DexCache* dex_cache = dex_caches->Get(i); |
| 2763 | const DexFile* dex_file = dex_cache->GetDexFile(); |
Mathieu Chartier | 9507fa2 | 2015-10-29 15:08:57 -0700 | [diff] [blame] | 2764 | // Try binary searching the type index by descriptor. |
| 2765 | const DexFile::TypeId* type_id = dex_file->FindTypeId(descriptor); |
| 2766 | if (type_id != nullptr) { |
| 2767 | uint16_t type_idx = dex_file->GetIndexForTypeId(*type_id); |
| 2768 | mirror::Class* klass = dex_cache->GetResolvedType(type_idx); |
| 2769 | if (klass != nullptr) { |
| 2770 | return klass; |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2771 | } |
| 2772 | } |
| 2773 | } |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2774 | return nullptr; |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2775 | } |
| 2776 | |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 2777 | // Look up classes by hash and descriptor and put all matching ones in the result array. |
| 2778 | class LookupClassesVisitor : public ClassLoaderVisitor { |
| 2779 | public: |
| 2780 | LookupClassesVisitor(const char* descriptor, size_t hash, std::vector<mirror::Class*>* result) |
| 2781 | : descriptor_(descriptor), |
| 2782 | hash_(hash), |
| 2783 | result_(result) {} |
| 2784 | |
| 2785 | void Visit(mirror::ClassLoader* class_loader) |
| 2786 | SHARED_REQUIRES(Locks::classlinker_classes_lock_, Locks::mutator_lock_) OVERRIDE { |
| 2787 | ClassTable* const class_table = class_loader->GetClassTable(); |
| 2788 | mirror::Class* klass = class_table->Lookup(descriptor_, hash_); |
| 2789 | if (klass != nullptr) { |
| 2790 | result_->push_back(klass); |
| 2791 | } |
| 2792 | } |
| 2793 | |
| 2794 | private: |
| 2795 | const char* const descriptor_; |
| 2796 | const size_t hash_; |
| 2797 | std::vector<mirror::Class*>* const result_; |
| 2798 | }; |
| 2799 | |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 2800 | void ClassLinker::LookupClasses(const char* descriptor, std::vector<mirror::Class*>& result) { |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 2801 | result.clear(); |
| 2802 | if (dex_cache_image_class_lookup_required_) { |
| 2803 | MoveImageClassesToClassTable(); |
| 2804 | } |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 2805 | Thread* const self = Thread::Current(); |
| 2806 | ReaderMutexLock mu(self, *Locks::classlinker_classes_lock_); |
Mathieu Chartier | 6b06953 | 2015-08-05 15:08:12 -0700 | [diff] [blame] | 2807 | const size_t hash = ComputeModifiedUtf8Hash(descriptor); |
| 2808 | mirror::Class* klass = boot_class_table_.Lookup(descriptor, hash); |
| 2809 | if (klass != nullptr) { |
| 2810 | result.push_back(klass); |
| 2811 | } |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 2812 | LookupClassesVisitor visitor(descriptor, hash, &result); |
| 2813 | VisitClassLoaders(&visitor); |
Elliott Hughes | 6fa602d | 2011-12-02 17:54:25 -0800 | [diff] [blame] | 2814 | } |
| 2815 | |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 2816 | void ClassLinker::VerifyClass(Thread* self, Handle<mirror::Class> klass) { |
Brian Carlstrom | 9b5ee88 | 2012-02-28 09:48:54 -0800 | [diff] [blame] | 2817 | // TODO: assert that the monitor on the Class is held |
Mathieu Chartier | db2633c | 2014-05-16 09:59:29 -0700 | [diff] [blame] | 2818 | ObjectLock<mirror::Class> lock(self, klass); |
Elliott Hughes | d9c67be | 2012-02-02 19:54:06 -0800 | [diff] [blame] | 2819 | |
Ian Rogers | 9ffb039 | 2012-09-10 11:56:50 -0700 | [diff] [blame] | 2820 | // Don't attempt to re-verify if already sufficiently verified. |
Andreas Gampe | bb0c7f6 | 2014-09-11 10:59:33 -0700 | [diff] [blame] | 2821 | if (klass->IsVerified()) { |
Andreas Gampe | 4849859 | 2014-09-10 19:48:05 -0700 | [diff] [blame] | 2822 | EnsurePreverifiedMethods(klass); |
jeffhao | 98eacac | 2011-09-14 16:11:53 -0700 | [diff] [blame] | 2823 | return; |
| 2824 | } |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 2825 | if (klass->IsCompileTimeVerified() && Runtime::Current()->IsAotCompiler()) { |
Andreas Gampe | bb0c7f6 | 2014-09-11 10:59:33 -0700 | [diff] [blame] | 2826 | return; |
| 2827 | } |
jeffhao | 98eacac | 2011-09-14 16:11:53 -0700 | [diff] [blame] | 2828 | |
Ian Rogers | 9ffb039 | 2012-09-10 11:56:50 -0700 | [diff] [blame] | 2829 | // The class might already be erroneous, for example at compile time if we attempted to verify |
| 2830 | // this class as a parent to another. |
Brian Carlstrom | 9b5ee88 | 2012-02-28 09:48:54 -0800 | [diff] [blame] | 2831 | if (klass->IsErroneous()) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2832 | ThrowEarlierClassFailure(klass.Get()); |
Brian Carlstrom | 9b5ee88 | 2012-02-28 09:48:54 -0800 | [diff] [blame] | 2833 | return; |
| 2834 | } |
| 2835 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 2836 | if (klass->GetStatus() == mirror::Class::kStatusResolved) { |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 2837 | mirror::Class::SetStatus(klass, mirror::Class::kStatusVerifying, self); |
Ian Rogers | 9ffb039 | 2012-09-10 11:56:50 -0700 | [diff] [blame] | 2838 | } else { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 2839 | CHECK_EQ(klass->GetStatus(), mirror::Class::kStatusRetryVerificationAtRuntime) |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2840 | << PrettyClass(klass.Get()); |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 2841 | CHECK(!Runtime::Current()->IsAotCompiler()); |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 2842 | mirror::Class::SetStatus(klass, mirror::Class::kStatusVerifyingAtRuntime, self); |
Ian Rogers | 9ffb039 | 2012-09-10 11:56:50 -0700 | [diff] [blame] | 2843 | } |
jeffhao | 98eacac | 2011-09-14 16:11:53 -0700 | [diff] [blame] | 2844 | |
Igor Murashkin | 7617abd | 2015-07-10 18:27:47 -0700 | [diff] [blame] | 2845 | // Skip verification if we are forcing a soft fail. |
| 2846 | // This has to be before the normal verification enabled check, |
| 2847 | // since technically verification is disabled in this mode. |
| 2848 | if (UNLIKELY(Runtime::Current()->IsVerificationSoftFail())) { |
| 2849 | // Force verification to be a 'soft failure'. |
| 2850 | mirror::Class::SetStatus(klass, mirror::Class::kStatusVerified, self); |
| 2851 | // As this is a fake verified status, make sure the methods are _not_ marked preverified |
| 2852 | // later. |
| 2853 | klass->SetPreverified(); |
| 2854 | return; |
| 2855 | } |
| 2856 | |
Jeff Hao | 4a200f5 | 2014-04-01 14:58:49 -0700 | [diff] [blame] | 2857 | // Skip verification if disabled. |
| 2858 | if (!Runtime::Current()->IsVerificationEnabled()) { |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 2859 | mirror::Class::SetStatus(klass, mirror::Class::kStatusVerified, self); |
Andreas Gampe | 4849859 | 2014-09-10 19:48:05 -0700 | [diff] [blame] | 2860 | EnsurePreverifiedMethods(klass); |
Jeff Hao | 4a200f5 | 2014-04-01 14:58:49 -0700 | [diff] [blame] | 2861 | return; |
| 2862 | } |
| 2863 | |
Ian Rogers | 9ffb039 | 2012-09-10 11:56:50 -0700 | [diff] [blame] | 2864 | // Verify super class. |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2865 | StackHandleScope<2> hs(self); |
| 2866 | Handle<mirror::Class> super(hs.NewHandle(klass->GetSuperClass())); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2867 | if (super.Get() != nullptr) { |
Ian Rogers | 9ffb039 | 2012-09-10 11:56:50 -0700 | [diff] [blame] | 2868 | // Acquire lock to prevent races on verifying the super class. |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 2869 | ObjectLock<mirror::Class> super_lock(self, super); |
Ian Rogers | 1c5eb70 | 2012-02-01 09:18:34 -0800 | [diff] [blame] | 2870 | |
| 2871 | if (!super->IsVerified() && !super->IsErroneous()) { |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 2872 | VerifyClass(self, super); |
Ian Rogers | 1c5eb70 | 2012-02-01 09:18:34 -0800 | [diff] [blame] | 2873 | } |
jeffhao | f1e6b7c | 2012-06-05 18:33:30 -0700 | [diff] [blame] | 2874 | if (!super->IsCompileTimeVerified()) { |
Brian Carlstrom | f363283 | 2014-05-20 15:36:53 -0700 | [diff] [blame] | 2875 | std::string error_msg( |
| 2876 | StringPrintf("Rejecting class %s that attempts to sub-class erroneous class %s", |
| 2877 | PrettyDescriptor(klass.Get()).c_str(), |
| 2878 | PrettyDescriptor(super.Get()).c_str())); |
Andreas Gampe | e4301ff | 2015-02-17 19:25:29 -0800 | [diff] [blame] | 2879 | LOG(WARNING) << error_msg << " in " << klass->GetDexCache()->GetLocation()->ToModifiedUtf8(); |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 2880 | Handle<mirror::Throwable> cause(hs.NewHandle(self->GetException())); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2881 | if (cause.Get() != nullptr) { |
Ian Rogers | 1c5eb70 | 2012-02-01 09:18:34 -0800 | [diff] [blame] | 2882 | self->ClearException(); |
| 2883 | } |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2884 | ThrowVerifyError(klass.Get(), "%s", error_msg.c_str()); |
| 2885 | if (cause.Get() != nullptr) { |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 2886 | self->GetException()->SetCause(cause.Get()); |
Ian Rogers | 1c5eb70 | 2012-02-01 09:18:34 -0800 | [diff] [blame] | 2887 | } |
Jeff Hao | 22cb09b | 2013-12-12 14:29:15 -0800 | [diff] [blame] | 2888 | ClassReference ref(klass->GetDexCache()->GetDexFile(), klass->GetDexClassDefIndex()); |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 2889 | if (Runtime::Current()->IsAotCompiler()) { |
Vladimir Marko | 2b5eaa2 | 2013-12-13 13:59:30 +0000 | [diff] [blame] | 2890 | Runtime::Current()->GetCompilerCallbacks()->ClassRejected(ref); |
| 2891 | } |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 2892 | mirror::Class::SetStatus(klass, mirror::Class::kStatusError, self); |
Ian Rogers | 1c5eb70 | 2012-02-01 09:18:34 -0800 | [diff] [blame] | 2893 | return; |
| 2894 | } |
| 2895 | } |
| 2896 | |
Elliott Hughes | 634eb2e | 2012-03-22 16:06:28 -0700 | [diff] [blame] | 2897 | // Try to use verification information from the oat file, otherwise do runtime verification. |
Ian Rogers | 4445a7e | 2012-10-05 17:19:13 -0700 | [diff] [blame] | 2898 | const DexFile& dex_file = *klass->GetDexCache()->GetDexFile(); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 2899 | mirror::Class::Status oat_file_class_status(mirror::Class::kStatusNotReady); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2900 | bool preverified = VerifyClassUsingOatFile(dex_file, klass.Get(), oat_file_class_status); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 2901 | if (oat_file_class_status == mirror::Class::kStatusError) { |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 2902 | VLOG(class_linker) << "Skipping runtime verification of erroneous class " |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2903 | << PrettyDescriptor(klass.Get()) << " in " |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 2904 | << klass->GetDexCache()->GetLocation()->ToModifiedUtf8(); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2905 | ThrowVerifyError(klass.Get(), "Rejecting class %s because it failed compile-time verification", |
| 2906 | PrettyDescriptor(klass.Get()).c_str()); |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 2907 | mirror::Class::SetStatus(klass, mirror::Class::kStatusError, self); |
jeffhao | ec01423 | 2012-09-05 10:42:25 -0700 | [diff] [blame] | 2908 | return; |
| 2909 | } |
Sebastien Hertz | 233ea8e | 2013-06-06 11:57:09 +0200 | [diff] [blame] | 2910 | verifier::MethodVerifier::FailureKind verifier_failure = verifier::MethodVerifier::kNoFailure; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2911 | std::string error_msg; |
jeffhao | f1e6b7c | 2012-06-05 18:33:30 -0700 | [diff] [blame] | 2912 | if (!preverified) { |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 2913 | verifier_failure = verifier::MethodVerifier::VerifyClass(self, |
| 2914 | klass.Get(), |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 2915 | Runtime::Current()->IsAotCompiler(), |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 2916 | &error_msg); |
jeffhao | f1e6b7c | 2012-06-05 18:33:30 -0700 | [diff] [blame] | 2917 | } |
| 2918 | if (preverified || verifier_failure != verifier::MethodVerifier::kHardFailure) { |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 2919 | if (!preverified && verifier_failure != verifier::MethodVerifier::kNoFailure) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2920 | VLOG(class_linker) << "Soft verification failure in class " << PrettyDescriptor(klass.Get()) |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 2921 | << " in " << klass->GetDexCache()->GetLocation()->ToModifiedUtf8() |
| 2922 | << " because: " << error_msg; |
| 2923 | } |
Ian Rogers | 1f53934 | 2012-10-03 21:09:42 -0700 | [diff] [blame] | 2924 | self->AssertNoPendingException(); |
jeffhao | e4f0b2a | 2012-08-30 11:18:57 -0700 | [diff] [blame] | 2925 | // Make sure all classes referenced by catch blocks are resolved. |
Brian Carlstrom | e7d856b | 2012-01-11 18:10:55 -0800 | [diff] [blame] | 2926 | ResolveClassExceptionHandlerTypes(dex_file, klass); |
jeffhao | e4f0b2a | 2012-08-30 11:18:57 -0700 | [diff] [blame] | 2927 | if (verifier_failure == verifier::MethodVerifier::kNoFailure) { |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 2928 | // Even though there were no verifier failures we need to respect whether the super-class |
| 2929 | // was verified or requiring runtime reverification. |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2930 | if (super.Get() == nullptr || super->IsVerified()) { |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 2931 | mirror::Class::SetStatus(klass, mirror::Class::kStatusVerified, self); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 2932 | } else { |
| 2933 | CHECK_EQ(super->GetStatus(), mirror::Class::kStatusRetryVerificationAtRuntime); |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 2934 | mirror::Class::SetStatus(klass, mirror::Class::kStatusRetryVerificationAtRuntime, self); |
Brian Carlstrom | 6d3f72c | 2013-08-21 18:06:34 -0700 | [diff] [blame] | 2935 | // Pretend a soft failure occured so that we don't consider the class verified below. |
| 2936 | verifier_failure = verifier::MethodVerifier::kSoftFailure; |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 2937 | } |
jeffhao | e4f0b2a | 2012-08-30 11:18:57 -0700 | [diff] [blame] | 2938 | } else { |
| 2939 | CHECK_EQ(verifier_failure, verifier::MethodVerifier::kSoftFailure); |
| 2940 | // Soft failures at compile time should be retried at runtime. Soft |
| 2941 | // failures at runtime will be handled by slow paths in the generated |
| 2942 | // code. Set status accordingly. |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 2943 | if (Runtime::Current()->IsAotCompiler()) { |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 2944 | mirror::Class::SetStatus(klass, mirror::Class::kStatusRetryVerificationAtRuntime, self); |
jeffhao | e4f0b2a | 2012-08-30 11:18:57 -0700 | [diff] [blame] | 2945 | } else { |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 2946 | mirror::Class::SetStatus(klass, mirror::Class::kStatusVerified, self); |
Andreas Gampe | bb0c7f6 | 2014-09-11 10:59:33 -0700 | [diff] [blame] | 2947 | // As this is a fake verified status, make sure the methods are _not_ marked preverified |
| 2948 | // later. |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 2949 | klass->SetPreverified(); |
jeffhao | e4f0b2a | 2012-08-30 11:18:57 -0700 | [diff] [blame] | 2950 | } |
| 2951 | } |
jeffhao | 5cfd6fb | 2011-09-27 13:54:29 -0700 | [diff] [blame] | 2952 | } else { |
Andreas Gampe | e4301ff | 2015-02-17 19:25:29 -0800 | [diff] [blame] | 2953 | LOG(WARNING) << "Verification failed on class " << PrettyDescriptor(klass.Get()) |
Ian Rogers | 1c5eb70 | 2012-02-01 09:18:34 -0800 | [diff] [blame] | 2954 | << " in " << klass->GetDexCache()->GetLocation()->ToModifiedUtf8() |
| 2955 | << " because: " << error_msg; |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 2956 | self->AssertNoPendingException(); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2957 | ThrowVerifyError(klass.Get(), "%s", error_msg.c_str()); |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 2958 | mirror::Class::SetStatus(klass, mirror::Class::kStatusError, self); |
jeffhao | 5cfd6fb | 2011-09-27 13:54:29 -0700 | [diff] [blame] | 2959 | } |
Sebastien Hertz | 233ea8e | 2013-06-06 11:57:09 +0200 | [diff] [blame] | 2960 | if (preverified || verifier_failure == verifier::MethodVerifier::kNoFailure) { |
Brian Carlstrom | 6d3f72c | 2013-08-21 18:06:34 -0700 | [diff] [blame] | 2961 | // Class is verified so we don't need to do any access check on its methods. |
Sebastien Hertz | 233ea8e | 2013-06-06 11:57:09 +0200 | [diff] [blame] | 2962 | // Let the interpreter know it by setting the kAccPreverified flag onto each |
| 2963 | // method. |
| 2964 | // Note: we're going here during compilation and at runtime. When we set the |
| 2965 | // kAccPreverified flag when compiling image classes, the flag is recorded |
| 2966 | // in the image and is set when loading the image. |
Andreas Gampe | 4849859 | 2014-09-10 19:48:05 -0700 | [diff] [blame] | 2967 | EnsurePreverifiedMethods(klass); |
| 2968 | } |
| 2969 | } |
| 2970 | |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 2971 | void ClassLinker::EnsurePreverifiedMethods(Handle<mirror::Class> klass) { |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 2972 | if (!klass->IsPreverified()) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2973 | klass->SetPreverifiedFlagOnAllMethods(image_pointer_size_); |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 2974 | klass->SetPreverified(); |
Sebastien Hertz | 233ea8e | 2013-06-06 11:57:09 +0200 | [diff] [blame] | 2975 | } |
jeffhao | 98eacac | 2011-09-14 16:11:53 -0700 | [diff] [blame] | 2976 | } |
| 2977 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 2978 | bool ClassLinker::VerifyClassUsingOatFile(const DexFile& dex_file, |
| 2979 | mirror::Class* klass, |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 2980 | mirror::Class::Status& oat_file_class_status) { |
Anwar Ghuloum | 044d283 | 2013-07-17 15:22:31 -0700 | [diff] [blame] | 2981 | // If we're compiling, we can only verify the class using the oat file if |
| 2982 | // we are not compiling the image or if the class we're verifying is not part of |
| 2983 | // the app. In other words, we will only check for preverification of bootclasspath |
| 2984 | // classes. |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 2985 | if (Runtime::Current()->IsAotCompiler()) { |
Anwar Ghuloum | 044d283 | 2013-07-17 15:22:31 -0700 | [diff] [blame] | 2986 | // Are we compiling the bootclasspath? |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 2987 | if (Runtime::Current()->GetCompilerCallbacks()->IsBootImage()) { |
Anwar Ghuloum | 044d283 | 2013-07-17 15:22:31 -0700 | [diff] [blame] | 2988 | return false; |
| 2989 | } |
| 2990 | // We are compiling an app (not the image). |
| 2991 | |
| 2992 | // Is this an app class? (I.e. not a bootclasspath class) |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2993 | if (klass->GetClassLoader() != nullptr) { |
Anwar Ghuloum | 044d283 | 2013-07-17 15:22:31 -0700 | [diff] [blame] | 2994 | return false; |
| 2995 | } |
Brian Carlstrom | e7d856b | 2012-01-11 18:10:55 -0800 | [diff] [blame] | 2996 | } |
Anwar Ghuloum | 044d283 | 2013-07-17 15:22:31 -0700 | [diff] [blame] | 2997 | |
Richard Uhler | 07b3c23 | 2015-03-31 15:57:54 -0700 | [diff] [blame] | 2998 | const OatFile::OatDexFile* oat_dex_file = dex_file.GetOatDexFile(); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 2999 | // In case we run without an image there won't be a backing oat file. |
| 3000 | if (oat_dex_file == nullptr) { |
Anwar Ghuloum | ad256bb | 2013-07-18 14:58:55 -0700 | [diff] [blame] | 3001 | return false; |
| 3002 | } |
| 3003 | |
Andreas Gampe | 76bd880 | 2014-12-10 16:43:58 -0800 | [diff] [blame] | 3004 | // We may be running with a preopted oat file but without image. In this case, |
| 3005 | // we don't skip verification of preverified classes to ensure we initialize |
| 3006 | // dex caches with all types resolved during verification. |
| 3007 | // We need to trust image classes, as these might be coming out of a pre-opted, quickened boot |
| 3008 | // image (that we just failed loading), and the verifier can't be run on quickened opcodes when |
| 3009 | // the runtime isn't started. On the other hand, app classes can be re-verified even if they are |
| 3010 | // already pre-opted, as then the runtime is started. |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 3011 | if (!Runtime::Current()->IsAotCompiler() && |
Andreas Gampe | 76bd880 | 2014-12-10 16:43:58 -0800 | [diff] [blame] | 3012 | !Runtime::Current()->GetHeap()->HasImageSpace() && |
| 3013 | klass->GetClassLoader() != nullptr) { |
| 3014 | return false; |
| 3015 | } |
| 3016 | |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 3017 | uint16_t class_def_index = klass->GetDexClassDefIndex(); |
Vladimir Marko | d3c5beb | 2014-04-11 16:32:51 +0100 | [diff] [blame] | 3018 | oat_file_class_status = oat_dex_file->GetOatClass(class_def_index).GetStatus(); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 3019 | if (oat_file_class_status == mirror::Class::kStatusVerified || |
| 3020 | oat_file_class_status == mirror::Class::kStatusInitialized) { |
Anwar Ghuloum | 044d283 | 2013-07-17 15:22:31 -0700 | [diff] [blame] | 3021 | return true; |
Brian Carlstrom | e7d856b | 2012-01-11 18:10:55 -0800 | [diff] [blame] | 3022 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 3023 | if (oat_file_class_status == mirror::Class::kStatusRetryVerificationAtRuntime) { |
jeffhao | 1ac2944 | 2012-03-26 11:37:32 -0700 | [diff] [blame] | 3024 | // Compile time verification failed with a soft error. Compile time verification can fail |
| 3025 | // because we have incomplete type information. Consider the following: |
Ian Rogers | c476227 | 2012-02-01 15:55:55 -0800 | [diff] [blame] | 3026 | // class ... { |
| 3027 | // Foo x; |
| 3028 | // .... () { |
| 3029 | // if (...) { |
| 3030 | // v1 gets assigned a type of resolved class Foo |
| 3031 | // } else { |
| 3032 | // v1 gets assigned a type of unresolved class Bar |
| 3033 | // } |
| 3034 | // iput x = v1 |
| 3035 | // } } |
| 3036 | // when we merge v1 following the if-the-else it results in Conflict |
| 3037 | // (see verifier::RegType::Merge) as we can't know the type of Bar and we could possibly be |
| 3038 | // allowing an unsafe assignment to the field x in the iput (javac may have compiled this as |
| 3039 | // it knew Bar was a sub-class of Foo, but for us this may have been moved into a separate apk |
| 3040 | // at compile time). |
| 3041 | return false; |
| 3042 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 3043 | if (oat_file_class_status == mirror::Class::kStatusError) { |
jeffhao | 1ac2944 | 2012-03-26 11:37:32 -0700 | [diff] [blame] | 3044 | // Compile time verification failed with a hard error. This is caused by invalid instructions |
| 3045 | // in the class. These errors are unrecoverable. |
| 3046 | return false; |
| 3047 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 3048 | if (oat_file_class_status == mirror::Class::kStatusNotReady) { |
Ian Rogers | c476227 | 2012-02-01 15:55:55 -0800 | [diff] [blame] | 3049 | // Status is uninitialized if we couldn't determine the status at compile time, for example, |
| 3050 | // not loading the class. |
| 3051 | // TODO: when the verifier doesn't rely on Class-es failing to resolve/load the type hierarchy |
| 3052 | // isn't a problem and this case shouldn't occur |
Brian Carlstrom | e7d856b | 2012-01-11 18:10:55 -0800 | [diff] [blame] | 3053 | return false; |
| 3054 | } |
Ian Rogers | 1ff3c98 | 2014-08-12 02:30:58 -0700 | [diff] [blame] | 3055 | std::string temp; |
Elliott Hughes | 634eb2e | 2012-03-22 16:06:28 -0700 | [diff] [blame] | 3056 | LOG(FATAL) << "Unexpected class status: " << oat_file_class_status |
Ian Rogers | fc0e94b | 2013-09-23 23:51:32 -0700 | [diff] [blame] | 3057 | << " " << dex_file.GetLocation() << " " << PrettyClass(klass) << " " |
Ian Rogers | 1ff3c98 | 2014-08-12 02:30:58 -0700 | [diff] [blame] | 3058 | << klass->GetDescriptor(&temp); |
Ian Rogers | e0a02da | 2014-12-02 14:10:53 -0800 | [diff] [blame] | 3059 | UNREACHABLE(); |
Brian Carlstrom | e7d856b | 2012-01-11 18:10:55 -0800 | [diff] [blame] | 3060 | } |
| 3061 | |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 3062 | void ClassLinker::ResolveClassExceptionHandlerTypes(const DexFile& dex_file, |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 3063 | Handle<mirror::Class> klass) { |
Brian Carlstrom | e7d856b | 2012-01-11 18:10:55 -0800 | [diff] [blame] | 3064 | for (size_t i = 0; i < klass->NumDirectMethods(); i++) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3065 | ResolveMethodExceptionHandlerTypes(dex_file, klass->GetDirectMethod(i, image_pointer_size_)); |
Brian Carlstrom | e7d856b | 2012-01-11 18:10:55 -0800 | [diff] [blame] | 3066 | } |
| 3067 | for (size_t i = 0; i < klass->NumVirtualMethods(); i++) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3068 | ResolveMethodExceptionHandlerTypes(dex_file, klass->GetVirtualMethod(i, image_pointer_size_)); |
Brian Carlstrom | e7d856b | 2012-01-11 18:10:55 -0800 | [diff] [blame] | 3069 | } |
| 3070 | } |
| 3071 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 3072 | void ClassLinker::ResolveMethodExceptionHandlerTypes(const DexFile& dex_file, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3073 | ArtMethod* method) { |
Brian Carlstrom | e7d856b | 2012-01-11 18:10:55 -0800 | [diff] [blame] | 3074 | // similar to DexVerifier::ScanTryCatchBlocks and dex2oat's ResolveExceptionsForMethod. |
| 3075 | const DexFile::CodeItem* code_item = dex_file.GetCodeItem(method->GetCodeItemOffset()); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 3076 | if (code_item == nullptr) { |
Brian Carlstrom | e7d856b | 2012-01-11 18:10:55 -0800 | [diff] [blame] | 3077 | return; // native or abstract method |
| 3078 | } |
| 3079 | if (code_item->tries_size_ == 0) { |
| 3080 | return; // nothing to process |
| 3081 | } |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 3082 | const uint8_t* handlers_ptr = DexFile::GetCatchHandlerData(*code_item, 0); |
Brian Carlstrom | e7d856b | 2012-01-11 18:10:55 -0800 | [diff] [blame] | 3083 | uint32_t handlers_size = DecodeUnsignedLeb128(&handlers_ptr); |
Brian Carlstrom | e7d856b | 2012-01-11 18:10:55 -0800 | [diff] [blame] | 3084 | for (uint32_t idx = 0; idx < handlers_size; idx++) { |
| 3085 | CatchHandlerIterator iterator(handlers_ptr); |
| 3086 | for (; iterator.HasNext(); iterator.Next()) { |
| 3087 | // Ensure exception types are resolved so that they don't need resolution to be delivered, |
| 3088 | // unresolved exception types will be ignored by exception delivery |
| 3089 | if (iterator.GetHandlerTypeIndex() != DexFile::kDexNoIndex16) { |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 3090 | mirror::Class* exception_type = ResolveType(iterator.GetHandlerTypeIndex(), method); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 3091 | if (exception_type == nullptr) { |
Brian Carlstrom | e7d856b | 2012-01-11 18:10:55 -0800 | [diff] [blame] | 3092 | DCHECK(Thread::Current()->IsExceptionPending()); |
| 3093 | Thread::Current()->ClearException(); |
| 3094 | } |
| 3095 | } |
| 3096 | } |
| 3097 | handlers_ptr = iterator.EndDataPointer(); |
| 3098 | } |
| 3099 | } |
| 3100 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 3101 | mirror::Class* ClassLinker::CreateProxyClass(ScopedObjectAccessAlreadyRunnable& soa, |
| 3102 | jstring name, |
| 3103 | jobjectArray interfaces, |
| 3104 | jobject loader, |
| 3105 | jobjectArray methods, |
| 3106 | jobjectArray throws) { |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 3107 | Thread* self = soa.Self(); |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 3108 | StackHandleScope<10> hs(self); |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 3109 | MutableHandle<mirror::Class> klass(hs.NewHandle( |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 3110 | AllocClass(self, GetClassRoot(kJavaLangClass), sizeof(mirror::Class)))); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 3111 | if (klass.Get() == nullptr) { |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 3112 | CHECK(self->IsExceptionPending()); // OOME. |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 3113 | return nullptr; |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 3114 | } |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 3115 | DCHECK(klass->GetClass() != nullptr); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 3116 | klass->SetObjectSize(sizeof(mirror::Proxy)); |
Andreas Gampe | 4849859 | 2014-09-10 19:48:05 -0700 | [diff] [blame] | 3117 | // Set the class access flags incl. preverified, so we do not try to set the flag on the methods. |
| 3118 | klass->SetAccessFlags(kAccClassIsProxy | kAccPublic | kAccFinal | kAccPreverified); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 3119 | klass->SetClassLoader(soa.Decode<mirror::ClassLoader*>(loader)); |
Ian Rogers | c2b4447 | 2011-12-14 21:17:17 -0800 | [diff] [blame] | 3120 | DCHECK_EQ(klass->GetPrimitiveType(), Primitive::kPrimNot); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 3121 | klass->SetName(soa.Decode<mirror::String*>(name)); |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 3122 | klass->SetDexCache(GetClassRoot(kJavaLangReflectProxy)->GetDexCache()); |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 3123 | mirror::Class::SetStatus(klass, mirror::Class::kStatusIdx, self); |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 3124 | std::string descriptor(GetDescriptorForProxy(klass.Get())); |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 3125 | const size_t hash = ComputeModifiedUtf8Hash(descriptor.c_str()); |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 3126 | |
Mathieu Chartier | d57d454 | 2015-10-14 10:55:30 -0700 | [diff] [blame] | 3127 | // Needs to be before we insert the class so that the allocator field is set. |
| 3128 | LinearAlloc* const allocator = GetOrCreateAllocatorForClassLoader(klass->GetClassLoader()); |
| 3129 | |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 3130 | // Insert the class before loading the fields as the field roots |
| 3131 | // (ArtField::declaring_class_) are only visited from the class |
| 3132 | // table. There can't be any suspend points between inserting the |
| 3133 | // class and setting the field arrays below. |
| 3134 | mirror::Class* existing = InsertClass(descriptor.c_str(), klass.Get(), hash); |
| 3135 | CHECK(existing == nullptr); |
Ian Rogers | c2b4447 | 2011-12-14 21:17:17 -0800 | [diff] [blame] | 3136 | |
Elliott Hughes | 2ed52c4 | 2012-03-21 16:56:56 -0700 | [diff] [blame] | 3137 | // Instance fields are inherited, but we add a couple of static fields... |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 3138 | const size_t num_fields = 2; |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 3139 | LengthPrefixedArray<ArtField>* sfields = AllocArtFieldArray(self, allocator, num_fields); |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 3140 | klass->SetSFieldsPtr(sfields); |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 3141 | |
Elliott Hughes | 2ed52c4 | 2012-03-21 16:56:56 -0700 | [diff] [blame] | 3142 | // 1. Create a static field 'interfaces' that holds the _declared_ interfaces implemented by |
| 3143 | // our proxy, so Class.getInterfaces doesn't return the flattened set. |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 3144 | ArtField& interfaces_sfield = sfields->At(0); |
| 3145 | interfaces_sfield.SetDexFieldIndex(0); |
| 3146 | interfaces_sfield.SetDeclaringClass(klass.Get()); |
| 3147 | interfaces_sfield.SetAccessFlags(kAccStatic | kAccPublic | kAccFinal); |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 3148 | |
Elliott Hughes | 2ed52c4 | 2012-03-21 16:56:56 -0700 | [diff] [blame] | 3149 | // 2. Create a static field 'throws' that holds exceptions thrown by our methods. |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 3150 | ArtField& throws_sfield = sfields->At(1); |
| 3151 | throws_sfield.SetDexFieldIndex(1); |
| 3152 | throws_sfield.SetDeclaringClass(klass.Get()); |
| 3153 | throws_sfield.SetAccessFlags(kAccStatic | kAccPublic | kAccFinal); |
Jesse Wilson | 95caa79 | 2011-10-12 18:14:17 -0400 | [diff] [blame] | 3154 | |
Ian Rogers | 466bb25 | 2011-10-14 03:29:56 -0700 | [diff] [blame] | 3155 | // Proxies have 1 direct method, the constructor |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 3156 | LengthPrefixedArray<ArtMethod>* directs = AllocArtMethodArray(self, allocator, 1); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3157 | // Currently AllocArtMethodArray cannot return null, but the OOM logic is left there in case we |
| 3158 | // want to throw OOM in the future. |
| 3159 | if (UNLIKELY(directs == nullptr)) { |
| 3160 | self->AssertPendingOOMException(); |
| 3161 | return nullptr; |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 3162 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3163 | klass->SetDirectMethodsPtr(directs); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3164 | CreateProxyConstructor(klass, klass->GetDirectMethodUnchecked(0, image_pointer_size_)); |
Jesse Wilson | 95caa79 | 2011-10-12 18:14:17 -0400 | [diff] [blame] | 3165 | |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 3166 | // Create virtual method using specified prototypes. |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 3167 | auto h_methods = hs.NewHandle(soa.Decode<mirror::ObjectArray<mirror::Method>*>(methods)); |
| 3168 | DCHECK_EQ(h_methods->GetClass(), mirror::Method::ArrayClass()) |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 3169 | << PrettyClass(h_methods->GetClass()); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 3170 | const size_t num_virtual_methods = h_methods->GetLength(); |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 3171 | auto* virtuals = AllocArtMethodArray(self, allocator, num_virtual_methods); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3172 | // Currently AllocArtMethodArray cannot return null, but the OOM logic is left there in case we |
| 3173 | // want to throw OOM in the future. |
| 3174 | if (UNLIKELY(virtuals == nullptr)) { |
| 3175 | self->AssertPendingOOMException(); |
| 3176 | return nullptr; |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 3177 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3178 | klass->SetVirtualMethodsPtr(virtuals); |
Jesse Wilson | 95caa79 | 2011-10-12 18:14:17 -0400 | [diff] [blame] | 3179 | for (size_t i = 0; i < num_virtual_methods; ++i) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3180 | auto* virtual_method = klass->GetVirtualMethodUnchecked(i, image_pointer_size_); |
| 3181 | auto* prototype = h_methods->Get(i)->GetArtMethod(); |
| 3182 | CreateProxyMethod(klass, prototype, virtual_method); |
| 3183 | DCHECK(virtual_method->GetDeclaringClass() != nullptr); |
| 3184 | DCHECK(prototype->GetDeclaringClass() != nullptr); |
Jesse Wilson | 95caa79 | 2011-10-12 18:14:17 -0400 | [diff] [blame] | 3185 | } |
Ian Rogers | c2b4447 | 2011-12-14 21:17:17 -0800 | [diff] [blame] | 3186 | |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 3187 | // The super class is java.lang.reflect.Proxy |
| 3188 | klass->SetSuperClass(GetClassRoot(kJavaLangReflectProxy)); |
| 3189 | // Now effectively in the loaded state. |
| 3190 | mirror::Class::SetStatus(klass, mirror::Class::kStatusLoaded, self); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 3191 | self->AssertNoPendingException(); |
Ian Rogers | c2b4447 | 2011-12-14 21:17:17 -0800 | [diff] [blame] | 3192 | |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 3193 | MutableHandle<mirror::Class> new_class = hs.NewHandle<mirror::Class>(nullptr); |
Ian Rogers | c898258 | 2012-09-07 16:53:25 -0700 | [diff] [blame] | 3194 | { |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 3195 | // Must hold lock on object when resolved. |
| 3196 | ObjectLock<mirror::Class> resolution_lock(self, klass); |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 3197 | // Link the fields and virtual methods, creating vtable and iftables. |
| 3198 | // The new class will replace the old one in the class table. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3199 | Handle<mirror::ObjectArray<mirror::Class>> h_interfaces( |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 3200 | hs.NewHandle(soa.Decode<mirror::ObjectArray<mirror::Class>*>(interfaces))); |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 3201 | if (!LinkClass(self, descriptor.c_str(), klass, h_interfaces, &new_class)) { |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 3202 | mirror::Class::SetStatus(klass, mirror::Class::kStatusError, self); |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 3203 | return nullptr; |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 3204 | } |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 3205 | } |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 3206 | CHECK(klass->IsRetired()); |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 3207 | CHECK_NE(klass.Get(), new_class.Get()); |
| 3208 | klass.Assign(new_class.Get()); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 3209 | |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 3210 | CHECK_EQ(interfaces_sfield.GetDeclaringClass(), klass.Get()); |
| 3211 | interfaces_sfield.SetObject<false>(klass.Get(), |
| 3212 | soa.Decode<mirror::ObjectArray<mirror::Class>*>(interfaces)); |
| 3213 | CHECK_EQ(throws_sfield.GetDeclaringClass(), klass.Get()); |
| 3214 | throws_sfield.SetObject<false>( |
| 3215 | klass.Get(), soa.Decode<mirror::ObjectArray<mirror::ObjectArray<mirror::Class> >*>(throws)); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 3216 | |
| 3217 | { |
| 3218 | // Lock on klass is released. Lock new class object. |
| 3219 | ObjectLock<mirror::Class> initialization_lock(self, klass); |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 3220 | mirror::Class::SetStatus(klass, mirror::Class::kStatusInitialized, self); |
Ian Rogers | c898258 | 2012-09-07 16:53:25 -0700 | [diff] [blame] | 3221 | } |
Ian Rogers | c2b4447 | 2011-12-14 21:17:17 -0800 | [diff] [blame] | 3222 | |
| 3223 | // sanity checks |
Elliott Hughes | 67d9200 | 2012-03-26 15:08:51 -0700 | [diff] [blame] | 3224 | if (kIsDebugBuild) { |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 3225 | CHECK(klass->GetIFieldsPtr() == nullptr); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3226 | CheckProxyConstructor(klass->GetDirectMethod(0, image_pointer_size_)); |
| 3227 | |
Ian Rogers | c2b4447 | 2011-12-14 21:17:17 -0800 | [diff] [blame] | 3228 | for (size_t i = 0; i < num_virtual_methods; ++i) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3229 | auto* virtual_method = klass->GetVirtualMethodUnchecked(i, image_pointer_size_); |
| 3230 | auto* prototype = h_methods->Get(i++)->GetArtMethod(); |
Mathieu Chartier | bfd9a43 | 2014-05-21 17:43:44 -0700 | [diff] [blame] | 3231 | CheckProxyMethod(virtual_method, prototype); |
Ian Rogers | c2b4447 | 2011-12-14 21:17:17 -0800 | [diff] [blame] | 3232 | } |
Elliott Hughes | 2ed52c4 | 2012-03-21 16:56:56 -0700 | [diff] [blame] | 3233 | |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 3234 | StackHandleScope<1> hs2(self); |
| 3235 | Handle<mirror::String> decoded_name = hs2.NewHandle(soa.Decode<mirror::String*>(name)); |
Elliott Hughes | 2ed52c4 | 2012-03-21 16:56:56 -0700 | [diff] [blame] | 3236 | std::string interfaces_field_name(StringPrintf("java.lang.Class[] %s.interfaces", |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 3237 | decoded_name->ToModifiedUtf8().c_str())); |
Elliott Hughes | 2ed52c4 | 2012-03-21 16:56:56 -0700 | [diff] [blame] | 3238 | CHECK_EQ(PrettyField(klass->GetStaticField(0)), interfaces_field_name); |
| 3239 | |
| 3240 | std::string throws_field_name(StringPrintf("java.lang.Class[][] %s.throws", |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 3241 | decoded_name->ToModifiedUtf8().c_str())); |
Elliott Hughes | 2ed52c4 | 2012-03-21 16:56:56 -0700 | [diff] [blame] | 3242 | CHECK_EQ(PrettyField(klass->GetStaticField(1)), throws_field_name); |
Ian Rogers | c2b4447 | 2011-12-14 21:17:17 -0800 | [diff] [blame] | 3243 | |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 3244 | CHECK_EQ(klass.Get()->GetInterfaces(), |
Brian Carlstrom | f363283 | 2014-05-20 15:36:53 -0700 | [diff] [blame] | 3245 | soa.Decode<mirror::ObjectArray<mirror::Class>*>(interfaces)); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 3246 | CHECK_EQ(klass.Get()->GetThrows(), |
Brian Carlstrom | f363283 | 2014-05-20 15:36:53 -0700 | [diff] [blame] | 3247 | soa.Decode<mirror::ObjectArray<mirror::ObjectArray<mirror::Class>>*>(throws)); |
Ian Rogers | c2b4447 | 2011-12-14 21:17:17 -0800 | [diff] [blame] | 3248 | } |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 3249 | return klass.Get(); |
Jesse Wilson | 95caa79 | 2011-10-12 18:14:17 -0400 | [diff] [blame] | 3250 | } |
| 3251 | |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 3252 | std::string ClassLinker::GetDescriptorForProxy(mirror::Class* proxy_class) { |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 3253 | DCHECK(proxy_class->IsProxyClass()); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 3254 | mirror::String* name = proxy_class->GetName(); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 3255 | DCHECK(name != nullptr); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 3256 | return DotToDescriptor(name->ToModifiedUtf8().c_str()); |
| 3257 | } |
| 3258 | |
Mathieu Chartier | 4e2cb09 | 2015-07-22 16:17:51 -0700 | [diff] [blame] | 3259 | ArtMethod* ClassLinker::FindMethodForProxy(mirror::Class* proxy_class, ArtMethod* proxy_method) { |
Ian Rogers | 16f9367 | 2012-02-14 12:29:06 -0800 | [diff] [blame] | 3260 | DCHECK(proxy_class->IsProxyClass()); |
| 3261 | DCHECK(proxy_method->IsProxyMethod()); |
Ian Rogers | 16f9367 | 2012-02-14 12:29:06 -0800 | [diff] [blame] | 3262 | { |
Mathieu Chartier | 673ed3d | 2015-08-28 14:56:43 -0700 | [diff] [blame] | 3263 | Thread* const self = Thread::Current(); |
| 3264 | ReaderMutexLock mu(self, dex_lock_); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 3265 | // Locate the dex cache of the original interface/Object |
Mathieu Chartier | 673ed3d | 2015-08-28 14:56:43 -0700 | [diff] [blame] | 3266 | for (jobject weak_root : dex_caches_) { |
| 3267 | mirror::DexCache* dex_cache = down_cast<mirror::DexCache*>(self->DecodeJObject(weak_root)); |
| 3268 | if (dex_cache != nullptr && |
Vladimir Marko | 05792b9 | 2015-08-03 11:56:49 +0100 | [diff] [blame] | 3269 | proxy_method->HasSameDexCacheResolvedTypes(dex_cache->GetResolvedTypes(), |
| 3270 | image_pointer_size_)) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3271 | ArtMethod* resolved_method = dex_cache->GetResolvedMethod( |
| 3272 | proxy_method->GetDexMethodIndex(), image_pointer_size_); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 3273 | CHECK(resolved_method != nullptr); |
| 3274 | return resolved_method; |
Ian Rogers | 16f9367 | 2012-02-14 12:29:06 -0800 | [diff] [blame] | 3275 | } |
| 3276 | } |
| 3277 | } |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 3278 | LOG(FATAL) << "Didn't find dex cache for " << PrettyClass(proxy_class) << " " |
| 3279 | << PrettyMethod(proxy_method); |
| 3280 | UNREACHABLE(); |
Ian Rogers | 16f9367 | 2012-02-14 12:29:06 -0800 | [diff] [blame] | 3281 | } |
| 3282 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3283 | void ClassLinker::CreateProxyConstructor(Handle<mirror::Class> klass, ArtMethod* out) { |
| 3284 | // Create constructor for Proxy that must initialize the method. |
| 3285 | CHECK_EQ(GetClassRoot(kJavaLangReflectProxy)->NumDirectMethods(), 16u); |
| 3286 | ArtMethod* proxy_constructor = GetClassRoot(kJavaLangReflectProxy)->GetDirectMethodUnchecked( |
| 3287 | 2, image_pointer_size_); |
Sebastien Hertz | ae94e35 | 2014-08-27 15:32:56 +0200 | [diff] [blame] | 3288 | // Ensure constructor is in dex cache so that we can use the dex cache to look up the overridden |
| 3289 | // constructor method. |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 3290 | GetClassRoot(kJavaLangReflectProxy)->GetDexCache()->SetResolvedMethod( |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3291 | proxy_constructor->GetDexMethodIndex(), proxy_constructor, image_pointer_size_); |
Jeff Hao | db8a664 | 2014-08-14 17:18:52 -0700 | [diff] [blame] | 3292 | // Clone the existing constructor of Proxy (our constructor would just invoke it so steal its |
| 3293 | // code_ too) |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3294 | DCHECK(out != nullptr); |
| 3295 | out->CopyFrom(proxy_constructor, image_pointer_size_); |
Ian Rogers | 466bb25 | 2011-10-14 03:29:56 -0700 | [diff] [blame] | 3296 | // Make this constructor public and fix the class to be our Proxy version |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3297 | out->SetAccessFlags((out->GetAccessFlags() & ~kAccProtected) | kAccPublic); |
| 3298 | out->SetDeclaringClass(klass.Get()); |
Ian Rogers | c2b4447 | 2011-12-14 21:17:17 -0800 | [diff] [blame] | 3299 | } |
| 3300 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3301 | void ClassLinker::CheckProxyConstructor(ArtMethod* constructor) const { |
Ian Rogers | 466bb25 | 2011-10-14 03:29:56 -0700 | [diff] [blame] | 3302 | CHECK(constructor->IsConstructor()); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3303 | auto* np = constructor->GetInterfaceMethodIfProxy(image_pointer_size_); |
| 3304 | CHECK_STREQ(np->GetName(), "<init>"); |
| 3305 | CHECK_STREQ(np->GetSignature().ToString().c_str(), "(Ljava/lang/reflect/InvocationHandler;)V"); |
Ian Rogers | 466bb25 | 2011-10-14 03:29:56 -0700 | [diff] [blame] | 3306 | DCHECK(constructor->IsPublic()); |
Jesse Wilson | 95caa79 | 2011-10-12 18:14:17 -0400 | [diff] [blame] | 3307 | } |
| 3308 | |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 3309 | void ClassLinker::CreateProxyMethod(Handle<mirror::Class> klass, ArtMethod* prototype, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3310 | ArtMethod* out) { |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 3311 | // Ensure prototype is in dex cache so that we can use the dex cache to look up the overridden |
| 3312 | // prototype method |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 3313 | auto* dex_cache = prototype->GetDeclaringClass()->GetDexCache(); |
| 3314 | // Avoid dirtying the dex cache unless we need to. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3315 | if (dex_cache->GetResolvedMethod(prototype->GetDexMethodIndex(), image_pointer_size_) != |
| 3316 | prototype) { |
| 3317 | dex_cache->SetResolvedMethod( |
| 3318 | prototype->GetDexMethodIndex(), prototype, image_pointer_size_); |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 3319 | } |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 3320 | // We steal everything from the prototype (such as DexCache, invoke stub, etc.) then specialize |
Ian Rogers | 466bb25 | 2011-10-14 03:29:56 -0700 | [diff] [blame] | 3321 | // as necessary |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3322 | DCHECK(out != nullptr); |
| 3323 | out->CopyFrom(prototype, image_pointer_size_); |
Ian Rogers | 466bb25 | 2011-10-14 03:29:56 -0700 | [diff] [blame] | 3324 | |
| 3325 | // Set class to be the concrete proxy class and clear the abstract flag, modify exceptions to |
| 3326 | // the intersection of throw exceptions as defined in Proxy |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3327 | out->SetDeclaringClass(klass.Get()); |
| 3328 | out->SetAccessFlags((out->GetAccessFlags() & ~kAccAbstract) | kAccFinal); |
Jesse Wilson | 95caa79 | 2011-10-12 18:14:17 -0400 | [diff] [blame] | 3329 | |
Ian Rogers | 466bb25 | 2011-10-14 03:29:56 -0700 | [diff] [blame] | 3330 | // At runtime the method looks like a reference and argument saving method, clone the code |
| 3331 | // related parameters from this method. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3332 | out->SetEntryPointFromQuickCompiledCode(GetQuickProxyInvokeHandler()); |
Ian Rogers | c2b4447 | 2011-12-14 21:17:17 -0800 | [diff] [blame] | 3333 | } |
Jesse Wilson | 95caa79 | 2011-10-12 18:14:17 -0400 | [diff] [blame] | 3334 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3335 | void ClassLinker::CheckProxyMethod(ArtMethod* method, ArtMethod* prototype) const { |
Ian Rogers | 466bb25 | 2011-10-14 03:29:56 -0700 | [diff] [blame] | 3336 | // Basic sanity |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 3337 | CHECK(!prototype->IsFinal()); |
| 3338 | CHECK(method->IsFinal()); |
| 3339 | CHECK(!method->IsAbstract()); |
Ian Rogers | 1984651 | 2012-02-24 11:42:47 -0800 | [diff] [blame] | 3340 | |
| 3341 | // The proxy method doesn't have its own dex cache or dex file and so it steals those of its |
| 3342 | // interface prototype. The exception to this are Constructors and the Class of the Proxy itself. |
Vladimir Marko | 05792b9 | 2015-08-03 11:56:49 +0100 | [diff] [blame] | 3343 | CHECK(prototype->HasSameDexCacheResolvedMethods(method, image_pointer_size_)); |
| 3344 | CHECK(prototype->HasSameDexCacheResolvedTypes(method, image_pointer_size_)); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3345 | auto* np = method->GetInterfaceMethodIfProxy(image_pointer_size_); |
| 3346 | CHECK_EQ(prototype->GetDeclaringClass()->GetDexCache(), np->GetDexCache()); |
Ian Rogers | 1984651 | 2012-02-24 11:42:47 -0800 | [diff] [blame] | 3347 | CHECK_EQ(prototype->GetDexMethodIndex(), method->GetDexMethodIndex()); |
| 3348 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3349 | CHECK_STREQ(np->GetName(), prototype->GetName()); |
| 3350 | CHECK_STREQ(np->GetShorty(), prototype->GetShorty()); |
Ian Rogers | 466bb25 | 2011-10-14 03:29:56 -0700 | [diff] [blame] | 3351 | // More complex sanity - via dex cache |
Vladimir Marko | 05792b9 | 2015-08-03 11:56:49 +0100 | [diff] [blame] | 3352 | CHECK_EQ(np->GetReturnType(true /* resolve */, image_pointer_size_), |
| 3353 | prototype->GetReturnType(true /* resolve */, image_pointer_size_)); |
Jesse Wilson | 95caa79 | 2011-10-12 18:14:17 -0400 | [diff] [blame] | 3354 | } |
| 3355 | |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 3356 | bool ClassLinker::CanWeInitializeClass(mirror::Class* klass, bool can_init_statics, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3357 | bool can_init_parents) { |
Brian Carlstrom | 610e49f | 2013-11-04 17:07:22 -0800 | [diff] [blame] | 3358 | if (can_init_statics && can_init_parents) { |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3359 | return true; |
| 3360 | } |
| 3361 | if (!can_init_statics) { |
| 3362 | // Check if there's a class initializer. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3363 | ArtMethod* clinit = klass->FindClassInitializer(image_pointer_size_); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 3364 | if (clinit != nullptr) { |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3365 | return false; |
| 3366 | } |
| 3367 | // Check if there are encoded static values needing initialization. |
| 3368 | if (klass->NumStaticFields() != 0) { |
Mathieu Chartier | f832284 | 2014-05-16 10:59:25 -0700 | [diff] [blame] | 3369 | const DexFile::ClassDef* dex_class_def = klass->GetClassDef(); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 3370 | DCHECK(dex_class_def != nullptr); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3371 | if (dex_class_def->static_values_off_ != 0) { |
| 3372 | return false; |
| 3373 | } |
| 3374 | } |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 3375 | // If we are a class we need to initialize all interfaces with default methods when we are |
| 3376 | // initialized. Check all of them. |
| 3377 | if (!klass->IsInterface()) { |
| 3378 | size_t num_interfaces = klass->GetIfTableCount(); |
| 3379 | for (size_t i = 0; i < num_interfaces; i++) { |
| 3380 | mirror::Class* iface = klass->GetIfTable()->GetInterface(i); |
| 3381 | if (iface->HasDefaultMethods() && |
| 3382 | !CanWeInitializeClass(iface, can_init_statics, can_init_parents)) { |
| 3383 | return false; |
| 3384 | } |
| 3385 | } |
| 3386 | } |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3387 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3388 | if (klass->IsInterface() || !klass->HasSuperClass()) { |
| 3389 | return true; |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3390 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3391 | mirror::Class* super_class = klass->GetSuperClass(); |
| 3392 | if (!can_init_parents && !super_class->IsInitialized()) { |
| 3393 | return false; |
| 3394 | } |
| 3395 | return CanWeInitializeClass(super_class, can_init_statics, can_init_parents); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3396 | } |
| 3397 | |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 3398 | bool ClassLinker::InitializeClass(Thread* self, Handle<mirror::Class> klass, |
| 3399 | bool can_init_statics, bool can_init_parents) { |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3400 | // see JLS 3rd edition, 12.4.2 "Detailed Initialization Procedure" for the locking protocol |
| 3401 | |
| 3402 | // Are we already initialized and therefore done? |
| 3403 | // Note: we differ from the JLS here as we don't do this under the lock, this is benign as |
| 3404 | // an initialized class will never change its state. |
| 3405 | if (klass->IsInitialized()) { |
| 3406 | return true; |
| 3407 | } |
| 3408 | |
| 3409 | // Fast fail if initialization requires a full runtime. Not part of the JLS. |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 3410 | if (!CanWeInitializeClass(klass.Get(), can_init_statics, can_init_parents)) { |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3411 | return false; |
| 3412 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3413 | |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 3414 | self->AllowThreadSuspension(); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3415 | uint64_t t0; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3416 | { |
Mathieu Chartier | db2633c | 2014-05-16 09:59:29 -0700 | [diff] [blame] | 3417 | ObjectLock<mirror::Class> lock(self, klass); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3418 | |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3419 | // Re-check under the lock in case another thread initialized ahead of us. |
| 3420 | if (klass->IsInitialized()) { |
Brian Carlstrom | d1422f8 | 2011-09-28 11:37:09 -0700 | [diff] [blame] | 3421 | return true; |
| 3422 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3423 | |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3424 | // Was the class already found to be erroneous? Done under the lock to match the JLS. |
Brian Carlstrom | d1422f8 | 2011-09-28 11:37:09 -0700 | [diff] [blame] | 3425 | if (klass->IsErroneous()) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 3426 | ThrowEarlierClassFailure(klass.Get()); |
Brian Carlstrom | b23eab1 | 2014-10-08 17:55:21 -0700 | [diff] [blame] | 3427 | VlogClassInitializationFailure(klass); |
Brian Carlstrom | d1422f8 | 2011-09-28 11:37:09 -0700 | [diff] [blame] | 3428 | return false; |
| 3429 | } |
| 3430 | |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 3431 | CHECK(klass->IsResolved()) << PrettyClass(klass.Get()) << ": state=" << klass->GetStatus(); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3432 | |
| 3433 | if (!klass->IsVerified()) { |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 3434 | VerifyClass(self, klass); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3435 | if (!klass->IsVerified()) { |
| 3436 | // We failed to verify, expect either the klass to be erroneous or verification failed at |
| 3437 | // compile time. |
| 3438 | if (klass->IsErroneous()) { |
jeffhao | a9b3bf4 | 2012-06-06 17:18:39 -0700 | [diff] [blame] | 3439 | CHECK(self->IsExceptionPending()); |
Brian Carlstrom | b23eab1 | 2014-10-08 17:55:21 -0700 | [diff] [blame] | 3440 | VlogClassInitializationFailure(klass); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3441 | } else { |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 3442 | CHECK(Runtime::Current()->IsAotCompiler()); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3443 | CHECK_EQ(klass->GetStatus(), mirror::Class::kStatusRetryVerificationAtRuntime); |
jeffhao | a9b3bf4 | 2012-06-06 17:18:39 -0700 | [diff] [blame] | 3444 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3445 | return false; |
Mathieu Chartier | 524507a | 2014-08-27 15:28:28 -0700 | [diff] [blame] | 3446 | } else { |
| 3447 | self->AssertNoPendingException(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3448 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3449 | } |
| 3450 | |
Brian Carlstrom | d1422f8 | 2011-09-28 11:37:09 -0700 | [diff] [blame] | 3451 | // If the class is kStatusInitializing, either this thread is |
| 3452 | // initializing higher up the stack or another thread has beat us |
| 3453 | // to initializing and we need to wait. Either way, this |
| 3454 | // invocation of InitializeClass will not be responsible for |
| 3455 | // running <clinit> and will return. |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 3456 | if (klass->GetStatus() == mirror::Class::kStatusInitializing) { |
Mathieu Chartier | 524507a | 2014-08-27 15:28:28 -0700 | [diff] [blame] | 3457 | // Could have got an exception during verification. |
| 3458 | if (self->IsExceptionPending()) { |
Brian Carlstrom | b23eab1 | 2014-10-08 17:55:21 -0700 | [diff] [blame] | 3459 | VlogClassInitializationFailure(klass); |
Mathieu Chartier | 524507a | 2014-08-27 15:28:28 -0700 | [diff] [blame] | 3460 | return false; |
| 3461 | } |
Elliott Hughes | 005ab2e | 2011-09-11 17:15:31 -0700 | [diff] [blame] | 3462 | // We caught somebody else in the act; was it us? |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 3463 | if (klass->GetClinitThreadId() == self->GetTid()) { |
Brian Carlstrom | d1422f8 | 2011-09-28 11:37:09 -0700 | [diff] [blame] | 3464 | // Yes. That's fine. Return so we can continue initializing. |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3465 | return true; |
| 3466 | } |
Brian Carlstrom | d1422f8 | 2011-09-28 11:37:09 -0700 | [diff] [blame] | 3467 | // No. That's fine. Wait for another thread to finish initializing. |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 3468 | return WaitForInitializeClass(klass, self, lock); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3469 | } |
| 3470 | |
| 3471 | if (!ValidateSuperClassDescriptors(klass)) { |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 3472 | mirror::Class::SetStatus(klass, mirror::Class::kStatusError, self); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3473 | return false; |
| 3474 | } |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 3475 | self->AllowThreadSuspension(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3476 | |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 3477 | CHECK_EQ(klass->GetStatus(), mirror::Class::kStatusVerified) << PrettyClass(klass.Get()); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3478 | |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3479 | // From here out other threads may observe that we're initializing and so changes of state |
| 3480 | // require the a notification. |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 3481 | klass->SetClinitThreadId(self->GetTid()); |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 3482 | mirror::Class::SetStatus(klass, mirror::Class::kStatusInitializing, self); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3483 | |
| 3484 | t0 = NanoTime(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3485 | } |
| 3486 | |
Brian Carlstrom | 6d3f72c | 2013-08-21 18:06:34 -0700 | [diff] [blame] | 3487 | // Initialize super classes, must be done while initializing for the JLS. |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3488 | if (!klass->IsInterface() && klass->HasSuperClass()) { |
| 3489 | mirror::Class* super_class = klass->GetSuperClass(); |
| 3490 | if (!super_class->IsInitialized()) { |
| 3491 | CHECK(!super_class->IsInterface()); |
| 3492 | CHECK(can_init_parents); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 3493 | StackHandleScope<1> hs(self); |
| 3494 | Handle<mirror::Class> handle_scope_super(hs.NewHandle(super_class)); |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 3495 | bool super_initialized = InitializeClass(self, handle_scope_super, can_init_statics, true); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3496 | if (!super_initialized) { |
| 3497 | // The super class was verified ahead of entering initializing, we should only be here if |
| 3498 | // the super class became erroneous due to initialization. |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 3499 | CHECK(handle_scope_super->IsErroneous() && self->IsExceptionPending()) |
Brian Carlstrom | f363283 | 2014-05-20 15:36:53 -0700 | [diff] [blame] | 3500 | << "Super class initialization failed for " |
| 3501 | << PrettyDescriptor(handle_scope_super.Get()) |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 3502 | << " that has unexpected status " << handle_scope_super->GetStatus() |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3503 | << "\nPending exception:\n" |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 3504 | << (self->GetException() != nullptr ? self->GetException()->Dump() : ""); |
Mathieu Chartier | db2633c | 2014-05-16 09:59:29 -0700 | [diff] [blame] | 3505 | ObjectLock<mirror::Class> lock(self, klass); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3506 | // Initialization failed because the super-class is erroneous. |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 3507 | mirror::Class::SetStatus(klass, mirror::Class::kStatusError, self); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3508 | return false; |
| 3509 | } |
Ian Rogers | 1bddec3 | 2012-02-04 12:27:34 -0800 | [diff] [blame] | 3510 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3511 | } |
| 3512 | |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 3513 | if (!klass->IsInterface()) { |
| 3514 | // Initialize interfaces with default methods for the JLS. |
| 3515 | size_t num_direct_interfaces = klass->NumDirectInterfaces(); |
Alex Light | 56a40f5 | 2015-10-14 11:07:41 -0700 | [diff] [blame] | 3516 | // Only setup the (expensive) handle scope if we actually need to. |
| 3517 | if (UNLIKELY(num_direct_interfaces > 0)) { |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 3518 | StackHandleScope<1> hs_iface(self); |
Alex Light | 56a40f5 | 2015-10-14 11:07:41 -0700 | [diff] [blame] | 3519 | MutableHandle<mirror::Class> handle_scope_iface(hs_iface.NewHandle<mirror::Class>(nullptr)); |
| 3520 | for (size_t i = 0; i < num_direct_interfaces; i++) { |
| 3521 | handle_scope_iface.Assign(mirror::Class::GetDirectInterface(self, klass, i)); |
| 3522 | CHECK(handle_scope_iface.Get() != nullptr); |
| 3523 | CHECK(handle_scope_iface->IsInterface()); |
| 3524 | if (handle_scope_iface->HasBeenRecursivelyInitialized()) { |
| 3525 | // We have already done this for this interface. Skip it. |
| 3526 | continue; |
| 3527 | } |
| 3528 | // We cannot just call initialize class directly because we need to ensure that ALL |
| 3529 | // interfaces with default methods are initialized. Non-default interface initialization |
| 3530 | // will not affect other non-default super-interfaces. |
| 3531 | bool iface_initialized = InitializeDefaultInterfaceRecursive(self, |
| 3532 | handle_scope_iface, |
| 3533 | can_init_statics, |
| 3534 | can_init_parents); |
| 3535 | if (!iface_initialized) { |
| 3536 | ObjectLock<mirror::Class> lock(self, klass); |
| 3537 | // Initialization failed because one of our interfaces with default methods is erroneous. |
| 3538 | mirror::Class::SetStatus(klass, mirror::Class::kStatusError, self); |
| 3539 | return false; |
| 3540 | } |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 3541 | } |
| 3542 | } |
| 3543 | } |
| 3544 | |
Mathieu Chartier | 05d89ee | 2014-10-28 13:57:04 -0700 | [diff] [blame] | 3545 | const size_t num_static_fields = klass->NumStaticFields(); |
| 3546 | if (num_static_fields > 0) { |
Mathieu Chartier | f832284 | 2014-05-16 10:59:25 -0700 | [diff] [blame] | 3547 | const DexFile::ClassDef* dex_class_def = klass->GetClassDef(); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 3548 | CHECK(dex_class_def != nullptr); |
Mathieu Chartier | f832284 | 2014-05-16 10:59:25 -0700 | [diff] [blame] | 3549 | const DexFile& dex_file = klass->GetDexFile(); |
Hiroshi Yamauchi | 67ef46a | 2014-08-21 15:59:43 -0700 | [diff] [blame] | 3550 | StackHandleScope<3> hs(self); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 3551 | Handle<mirror::ClassLoader> class_loader(hs.NewHandle(klass->GetClassLoader())); |
Mathieu Chartier | f832284 | 2014-05-16 10:59:25 -0700 | [diff] [blame] | 3552 | Handle<mirror::DexCache> dex_cache(hs.NewHandle(klass->GetDexCache())); |
Mathieu Chartier | 05d89ee | 2014-10-28 13:57:04 -0700 | [diff] [blame] | 3553 | |
| 3554 | // Eagerly fill in static fields so that the we don't have to do as many expensive |
| 3555 | // Class::FindStaticField in ResolveField. |
| 3556 | for (size_t i = 0; i < num_static_fields; ++i) { |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 3557 | ArtField* field = klass->GetStaticField(i); |
Mathieu Chartier | 05d89ee | 2014-10-28 13:57:04 -0700 | [diff] [blame] | 3558 | const uint32_t field_idx = field->GetDexFieldIndex(); |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 3559 | ArtField* resolved_field = dex_cache->GetResolvedField(field_idx, image_pointer_size_); |
Mathieu Chartier | 05d89ee | 2014-10-28 13:57:04 -0700 | [diff] [blame] | 3560 | if (resolved_field == nullptr) { |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 3561 | dex_cache->SetResolvedField(field_idx, field, image_pointer_size_); |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 3562 | } else { |
| 3563 | DCHECK_EQ(field, resolved_field); |
Mathieu Chartier | 05d89ee | 2014-10-28 13:57:04 -0700 | [diff] [blame] | 3564 | } |
| 3565 | } |
| 3566 | |
Hiroshi Yamauchi | 8850011 | 2014-08-22 12:12:56 -0700 | [diff] [blame] | 3567 | EncodedStaticFieldValueIterator value_it(dex_file, &dex_cache, &class_loader, |
| 3568 | this, *dex_class_def); |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 3569 | const uint8_t* class_data = dex_file.GetClassData(*dex_class_def); |
Hiroshi Yamauchi | 8850011 | 2014-08-22 12:12:56 -0700 | [diff] [blame] | 3570 | ClassDataItemIterator field_it(dex_file, class_data); |
| 3571 | if (value_it.HasNext()) { |
| 3572 | DCHECK(field_it.HasNextStaticField()); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3573 | CHECK(can_init_statics); |
Hiroshi Yamauchi | 8850011 | 2014-08-22 12:12:56 -0700 | [diff] [blame] | 3574 | for ( ; value_it.HasNext(); value_it.Next(), field_it.Next()) { |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 3575 | ArtField* field = ResolveField( |
| 3576 | dex_file, field_it.GetMemberIndex(), dex_cache, class_loader, true); |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 3577 | if (Runtime::Current()->IsActiveTransaction()) { |
Hiroshi Yamauchi | 8850011 | 2014-08-22 12:12:56 -0700 | [diff] [blame] | 3578 | value_it.ReadValueToField<true>(field); |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 3579 | } else { |
Hiroshi Yamauchi | 8850011 | 2014-08-22 12:12:56 -0700 | [diff] [blame] | 3580 | value_it.ReadValueToField<false>(field); |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 3581 | } |
Hiroshi Yamauchi | 8850011 | 2014-08-22 12:12:56 -0700 | [diff] [blame] | 3582 | DCHECK(!value_it.HasNext() || field_it.HasNextStaticField()); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3583 | } |
| 3584 | } |
| 3585 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3586 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3587 | ArtMethod* clinit = klass->FindClassInitializer(image_pointer_size_); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 3588 | if (clinit != nullptr) { |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3589 | CHECK(can_init_statics); |
Ian Rogers | 5d27faf | 2014-05-02 17:17:18 -0700 | [diff] [blame] | 3590 | JValue result; |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 3591 | clinit->Invoke(self, nullptr, 0, &result, "V"); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3592 | } |
| 3593 | |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 3594 | self->AllowThreadSuspension(); |
Elliott Hughes | 83df2ac | 2011-10-11 16:37:54 -0700 | [diff] [blame] | 3595 | uint64_t t1 = NanoTime(); |
| 3596 | |
Ian Rogers | bdfb1a5 | 2012-01-12 14:05:22 -0800 | [diff] [blame] | 3597 | bool success = true; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3598 | { |
Mathieu Chartier | db2633c | 2014-05-16 09:59:29 -0700 | [diff] [blame] | 3599 | ObjectLock<mirror::Class> lock(self, klass); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3600 | |
| 3601 | if (self->IsExceptionPending()) { |
Brian Carlstrom | b23eab1 | 2014-10-08 17:55:21 -0700 | [diff] [blame] | 3602 | WrapExceptionInInitializer(klass); |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 3603 | mirror::Class::SetStatus(klass, mirror::Class::kStatusError, self); |
Ian Rogers | bdfb1a5 | 2012-01-12 14:05:22 -0800 | [diff] [blame] | 3604 | success = false; |
Sebastien Hertz | 1c80bec | 2015-02-03 11:58:06 +0100 | [diff] [blame] | 3605 | } else if (Runtime::Current()->IsTransactionAborted()) { |
| 3606 | // The exception thrown when the transaction aborted has been caught and cleared |
| 3607 | // so we need to throw it again now. |
Sebastien Hertz | bd9cf9f | 2015-03-03 12:16:13 +0100 | [diff] [blame] | 3608 | VLOG(compiler) << "Return from class initializer of " << PrettyDescriptor(klass.Get()) |
| 3609 | << " without exception while transaction was aborted: re-throw it now."; |
Sebastien Hertz | 2fd7e69 | 2015-04-02 11:11:19 +0200 | [diff] [blame] | 3610 | Runtime::Current()->ThrowTransactionAbortError(self); |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 3611 | mirror::Class::SetStatus(klass, mirror::Class::kStatusError, self); |
Sebastien Hertz | 1c80bec | 2015-02-03 11:58:06 +0100 | [diff] [blame] | 3612 | success = false; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3613 | } else { |
Elliott Hughes | 83df2ac | 2011-10-11 16:37:54 -0700 | [diff] [blame] | 3614 | RuntimeStats* global_stats = Runtime::Current()->GetStats(); |
| 3615 | RuntimeStats* thread_stats = self->GetStats(); |
| 3616 | ++global_stats->class_init_count; |
| 3617 | ++thread_stats->class_init_count; |
| 3618 | global_stats->class_init_time_ns += (t1 - t0); |
| 3619 | thread_stats->class_init_time_ns += (t1 - t0); |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 3620 | // Set the class as initialized except if failed to initialize static fields. |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 3621 | mirror::Class::SetStatus(klass, mirror::Class::kStatusInitialized, self); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3622 | if (VLOG_IS_ON(class_linker)) { |
Ian Rogers | 1ff3c98 | 2014-08-12 02:30:58 -0700 | [diff] [blame] | 3623 | std::string temp; |
| 3624 | LOG(INFO) << "Initialized class " << klass->GetDescriptor(&temp) << " from " << |
Mathieu Chartier | f832284 | 2014-05-16 10:59:25 -0700 | [diff] [blame] | 3625 | klass->GetLocation(); |
Brian Carlstrom | ae82698 | 2011-11-09 01:33:42 -0800 | [diff] [blame] | 3626 | } |
Brian Carlstrom | 073278c | 2014-02-19 15:21:21 -0800 | [diff] [blame] | 3627 | // Opportunistically set static method trampolines to their destination. |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 3628 | FixupStaticTrampolines(klass.Get()); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3629 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3630 | } |
Ian Rogers | bdfb1a5 | 2012-01-12 14:05:22 -0800 | [diff] [blame] | 3631 | return success; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3632 | } |
| 3633 | |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 3634 | // We recursively run down the tree of interfaces. We need to do this in the order they are declared |
| 3635 | // and perform the initialization only on those interfaces that contain default methods. |
| 3636 | bool ClassLinker::InitializeDefaultInterfaceRecursive(Thread* self, |
| 3637 | Handle<mirror::Class> iface, |
| 3638 | bool can_init_statics, |
| 3639 | bool can_init_parents) { |
| 3640 | CHECK(iface->IsInterface()); |
| 3641 | size_t num_direct_ifaces = iface->NumDirectInterfaces(); |
Alex Light | 56a40f5 | 2015-10-14 11:07:41 -0700 | [diff] [blame] | 3642 | // Only create the (expensive) handle scope if we need it. |
| 3643 | if (UNLIKELY(num_direct_ifaces > 0)) { |
| 3644 | StackHandleScope<1> hs(self); |
| 3645 | MutableHandle<mirror::Class> handle_super_iface(hs.NewHandle<mirror::Class>(nullptr)); |
| 3646 | // First we initialize all of iface's super-interfaces recursively. |
| 3647 | for (size_t i = 0; i < num_direct_ifaces; i++) { |
| 3648 | mirror::Class* super_iface = mirror::Class::GetDirectInterface(self, iface, i); |
| 3649 | if (!super_iface->HasBeenRecursivelyInitialized()) { |
| 3650 | // Recursive step |
| 3651 | handle_super_iface.Assign(super_iface); |
| 3652 | if (!InitializeDefaultInterfaceRecursive(self, |
| 3653 | handle_super_iface, |
| 3654 | can_init_statics, |
| 3655 | can_init_parents)) { |
| 3656 | return false; |
| 3657 | } |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 3658 | } |
| 3659 | } |
| 3660 | } |
| 3661 | |
| 3662 | bool result = true; |
| 3663 | // Then we initialize 'iface' if it has default methods. We do not need to (and in fact must not) |
| 3664 | // initialize if we don't have default methods. |
| 3665 | if (iface->HasDefaultMethods()) { |
| 3666 | result = EnsureInitialized(self, iface, can_init_statics, can_init_parents); |
| 3667 | } |
| 3668 | |
| 3669 | // Mark that this interface has undergone recursive default interface initialization so we know we |
| 3670 | // can skip it on any later class initializations. We do this even if we are not a default |
| 3671 | // interface since we can still avoid the traversal. This is purely a performance optimization. |
| 3672 | if (result) { |
| 3673 | // TODO This should be done in a better way |
| 3674 | ObjectLock<mirror::Class> lock(self, iface); |
| 3675 | iface->SetRecursivelyInitialized(); |
| 3676 | } |
| 3677 | return result; |
| 3678 | } |
| 3679 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 3680 | bool ClassLinker::WaitForInitializeClass(Handle<mirror::Class> klass, |
| 3681 | Thread* self, |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 3682 | ObjectLock<mirror::Class>& lock) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 3683 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Brian Carlstrom | d1422f8 | 2011-09-28 11:37:09 -0700 | [diff] [blame] | 3684 | while (true) { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 3685 | self->AssertNoPendingException(); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 3686 | CHECK(!klass->IsInitialized()); |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 3687 | lock.WaitIgnoringInterrupts(); |
Brian Carlstrom | d1422f8 | 2011-09-28 11:37:09 -0700 | [diff] [blame] | 3688 | |
| 3689 | // When we wake up, repeat the test for init-in-progress. If |
| 3690 | // there's an exception pending (only possible if |
Brian Carlstrom | b23eab1 | 2014-10-08 17:55:21 -0700 | [diff] [blame] | 3691 | // we were not using WaitIgnoringInterrupts), bail out. |
Brian Carlstrom | d1422f8 | 2011-09-28 11:37:09 -0700 | [diff] [blame] | 3692 | if (self->IsExceptionPending()) { |
Brian Carlstrom | b23eab1 | 2014-10-08 17:55:21 -0700 | [diff] [blame] | 3693 | WrapExceptionInInitializer(klass); |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 3694 | mirror::Class::SetStatus(klass, mirror::Class::kStatusError, self); |
Brian Carlstrom | d1422f8 | 2011-09-28 11:37:09 -0700 | [diff] [blame] | 3695 | return false; |
| 3696 | } |
| 3697 | // Spurious wakeup? Go back to waiting. |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 3698 | if (klass->GetStatus() == mirror::Class::kStatusInitializing) { |
Brian Carlstrom | d1422f8 | 2011-09-28 11:37:09 -0700 | [diff] [blame] | 3699 | continue; |
| 3700 | } |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 3701 | if (klass->GetStatus() == mirror::Class::kStatusVerified && |
| 3702 | Runtime::Current()->IsAotCompiler()) { |
Ian Rogers | 3d1548d | 2012-09-24 14:08:03 -0700 | [diff] [blame] | 3703 | // Compile time initialization failed. |
| 3704 | return false; |
| 3705 | } |
Brian Carlstrom | d1422f8 | 2011-09-28 11:37:09 -0700 | [diff] [blame] | 3706 | if (klass->IsErroneous()) { |
| 3707 | // The caller wants an exception, but it was thrown in a |
| 3708 | // different thread. Synthesize one here. |
Brian Carlstrom | df14324 | 2011-10-10 18:05:34 -0700 | [diff] [blame] | 3709 | ThrowNoClassDefFoundError("<clinit> failed for class %s; see exception in other thread", |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 3710 | PrettyDescriptor(klass.Get()).c_str()); |
Brian Carlstrom | b23eab1 | 2014-10-08 17:55:21 -0700 | [diff] [blame] | 3711 | VlogClassInitializationFailure(klass); |
Brian Carlstrom | d1422f8 | 2011-09-28 11:37:09 -0700 | [diff] [blame] | 3712 | return false; |
| 3713 | } |
| 3714 | if (klass->IsInitialized()) { |
| 3715 | return true; |
| 3716 | } |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 3717 | LOG(FATAL) << "Unexpected class status. " << PrettyClass(klass.Get()) << " is " |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 3718 | << klass->GetStatus(); |
Brian Carlstrom | d1422f8 | 2011-09-28 11:37:09 -0700 | [diff] [blame] | 3719 | } |
Ian Rogers | 0714083 | 2014-09-30 15:43:59 -0700 | [diff] [blame] | 3720 | UNREACHABLE(); |
Brian Carlstrom | d1422f8 | 2011-09-28 11:37:09 -0700 | [diff] [blame] | 3721 | } |
| 3722 | |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3723 | static void ThrowSignatureCheckResolveReturnTypeException(Handle<mirror::Class> klass, |
| 3724 | Handle<mirror::Class> super_klass, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3725 | ArtMethod* method, |
| 3726 | ArtMethod* m) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 3727 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3728 | DCHECK(Thread::Current()->IsExceptionPending()); |
| 3729 | DCHECK(!m->IsProxyMethod()); |
| 3730 | const DexFile* dex_file = m->GetDexFile(); |
| 3731 | const DexFile::MethodId& method_id = dex_file->GetMethodId(m->GetDexMethodIndex()); |
| 3732 | const DexFile::ProtoId& proto_id = dex_file->GetMethodPrototype(method_id); |
| 3733 | uint16_t return_type_idx = proto_id.return_type_idx_; |
| 3734 | std::string return_type = PrettyType(return_type_idx, *dex_file); |
| 3735 | std::string class_loader = PrettyTypeOf(m->GetDeclaringClass()->GetClassLoader()); |
| 3736 | ThrowWrappedLinkageError(klass.Get(), |
| 3737 | "While checking class %s method %s signature against %s %s: " |
| 3738 | "Failed to resolve return type %s with %s", |
| 3739 | PrettyDescriptor(klass.Get()).c_str(), |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3740 | PrettyMethod(method).c_str(), |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3741 | super_klass->IsInterface() ? "interface" : "superclass", |
| 3742 | PrettyDescriptor(super_klass.Get()).c_str(), |
| 3743 | return_type.c_str(), class_loader.c_str()); |
| 3744 | } |
| 3745 | |
| 3746 | static void ThrowSignatureCheckResolveArgException(Handle<mirror::Class> klass, |
| 3747 | Handle<mirror::Class> super_klass, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3748 | ArtMethod* method, |
| 3749 | ArtMethod* m, |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 3750 | uint32_t index, |
| 3751 | uint32_t arg_type_idx) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 3752 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3753 | DCHECK(Thread::Current()->IsExceptionPending()); |
| 3754 | DCHECK(!m->IsProxyMethod()); |
| 3755 | const DexFile* dex_file = m->GetDexFile(); |
| 3756 | std::string arg_type = PrettyType(arg_type_idx, *dex_file); |
| 3757 | std::string class_loader = PrettyTypeOf(m->GetDeclaringClass()->GetClassLoader()); |
| 3758 | ThrowWrappedLinkageError(klass.Get(), |
| 3759 | "While checking class %s method %s signature against %s %s: " |
| 3760 | "Failed to resolve arg %u type %s with %s", |
| 3761 | PrettyDescriptor(klass.Get()).c_str(), |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3762 | PrettyMethod(method).c_str(), |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3763 | super_klass->IsInterface() ? "interface" : "superclass", |
| 3764 | PrettyDescriptor(super_klass.Get()).c_str(), |
| 3765 | index, arg_type.c_str(), class_loader.c_str()); |
| 3766 | } |
| 3767 | |
| 3768 | static void ThrowSignatureMismatch(Handle<mirror::Class> klass, |
| 3769 | Handle<mirror::Class> super_klass, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3770 | ArtMethod* method, |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3771 | const std::string& error_msg) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 3772 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3773 | ThrowLinkageError(klass.Get(), |
| 3774 | "Class %s method %s resolves differently in %s %s: %s", |
| 3775 | PrettyDescriptor(klass.Get()).c_str(), |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3776 | PrettyMethod(method).c_str(), |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3777 | super_klass->IsInterface() ? "interface" : "superclass", |
| 3778 | PrettyDescriptor(super_klass.Get()).c_str(), |
| 3779 | error_msg.c_str()); |
| 3780 | } |
| 3781 | |
Ian Rogers | b5fb207 | 2014-12-02 17:22:02 -0800 | [diff] [blame] | 3782 | static bool HasSameSignatureWithDifferentClassLoaders(Thread* self, |
Vladimir Marko | 05792b9 | 2015-08-03 11:56:49 +0100 | [diff] [blame] | 3783 | size_t pointer_size, |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3784 | Handle<mirror::Class> klass, |
| 3785 | Handle<mirror::Class> super_klass, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3786 | ArtMethod* method1, |
| 3787 | ArtMethod* method2) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 3788 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Ian Rogers | b5fb207 | 2014-12-02 17:22:02 -0800 | [diff] [blame] | 3789 | { |
| 3790 | StackHandleScope<1> hs(self); |
Vladimir Marko | 05792b9 | 2015-08-03 11:56:49 +0100 | [diff] [blame] | 3791 | Handle<mirror::Class> return_type(hs.NewHandle(method1->GetReturnType(true /* resolve */, |
| 3792 | pointer_size))); |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3793 | if (UNLIKELY(return_type.Get() == nullptr)) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3794 | ThrowSignatureCheckResolveReturnTypeException(klass, super_klass, method1, method1); |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3795 | return false; |
| 3796 | } |
Vladimir Marko | 05792b9 | 2015-08-03 11:56:49 +0100 | [diff] [blame] | 3797 | mirror::Class* other_return_type = method2->GetReturnType(true /* resolve */, |
| 3798 | pointer_size); |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3799 | if (UNLIKELY(other_return_type == nullptr)) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3800 | ThrowSignatureCheckResolveReturnTypeException(klass, super_klass, method1, method2); |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3801 | return false; |
| 3802 | } |
Vladimir Marko | 862f43c | 2015-02-10 18:22:57 +0000 | [diff] [blame] | 3803 | if (UNLIKELY(other_return_type != return_type.Get())) { |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3804 | ThrowSignatureMismatch(klass, super_klass, method1, |
| 3805 | StringPrintf("Return types mismatch: %s(%p) vs %s(%p)", |
| 3806 | PrettyClassAndClassLoader(return_type.Get()).c_str(), |
| 3807 | return_type.Get(), |
| 3808 | PrettyClassAndClassLoader(other_return_type).c_str(), |
| 3809 | other_return_type)); |
Ian Rogers | b5fb207 | 2014-12-02 17:22:02 -0800 | [diff] [blame] | 3810 | return false; |
| 3811 | } |
| 3812 | } |
| 3813 | const DexFile::TypeList* types1 = method1->GetParameterTypeList(); |
| 3814 | const DexFile::TypeList* types2 = method2->GetParameterTypeList(); |
| 3815 | if (types1 == nullptr) { |
Andreas Gampe | d8ca52e | 2015-02-13 15:23:18 -0800 | [diff] [blame] | 3816 | if (types2 != nullptr && types2->Size() != 0) { |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3817 | ThrowSignatureMismatch(klass, super_klass, method1, |
| 3818 | StringPrintf("Type list mismatch with %s", |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3819 | PrettyMethod(method2, true).c_str())); |
Andreas Gampe | d8ca52e | 2015-02-13 15:23:18 -0800 | [diff] [blame] | 3820 | return false; |
| 3821 | } |
| 3822 | return true; |
Ian Rogers | b5fb207 | 2014-12-02 17:22:02 -0800 | [diff] [blame] | 3823 | } else if (UNLIKELY(types2 == nullptr)) { |
Andreas Gampe | d8ca52e | 2015-02-13 15:23:18 -0800 | [diff] [blame] | 3824 | if (types1->Size() != 0) { |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3825 | ThrowSignatureMismatch(klass, super_klass, method1, |
| 3826 | StringPrintf("Type list mismatch with %s", |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3827 | PrettyMethod(method2, true).c_str())); |
Andreas Gampe | d8ca52e | 2015-02-13 15:23:18 -0800 | [diff] [blame] | 3828 | return false; |
| 3829 | } |
| 3830 | return true; |
Ian Rogers | b5fb207 | 2014-12-02 17:22:02 -0800 | [diff] [blame] | 3831 | } |
| 3832 | uint32_t num_types = types1->Size(); |
| 3833 | if (UNLIKELY(num_types != types2->Size())) { |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3834 | ThrowSignatureMismatch(klass, super_klass, method1, |
| 3835 | StringPrintf("Type list mismatch with %s", |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3836 | PrettyMethod(method2, true).c_str())); |
Ian Rogers | b5fb207 | 2014-12-02 17:22:02 -0800 | [diff] [blame] | 3837 | return false; |
| 3838 | } |
| 3839 | for (uint32_t i = 0; i < num_types; ++i) { |
Vladimir Marko | 862f43c | 2015-02-10 18:22:57 +0000 | [diff] [blame] | 3840 | StackHandleScope<1> hs(self); |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3841 | uint32_t param_type_idx = types1->GetTypeItem(i).type_idx_; |
Vladimir Marko | 862f43c | 2015-02-10 18:22:57 +0000 | [diff] [blame] | 3842 | Handle<mirror::Class> param_type(hs.NewHandle( |
Vladimir Marko | 05792b9 | 2015-08-03 11:56:49 +0100 | [diff] [blame] | 3843 | method1->GetClassFromTypeIndex(param_type_idx, true /* resolve */, pointer_size))); |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3844 | if (UNLIKELY(param_type.Get() == nullptr)) { |
| 3845 | ThrowSignatureCheckResolveArgException(klass, super_klass, method1, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3846 | method1, i, param_type_idx); |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3847 | return false; |
| 3848 | } |
| 3849 | uint32_t other_param_type_idx = types2->GetTypeItem(i).type_idx_; |
Ian Rogers | b5fb207 | 2014-12-02 17:22:02 -0800 | [diff] [blame] | 3850 | mirror::Class* other_param_type = |
Vladimir Marko | 05792b9 | 2015-08-03 11:56:49 +0100 | [diff] [blame] | 3851 | method2->GetClassFromTypeIndex(other_param_type_idx, true /* resolve */, pointer_size); |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3852 | if (UNLIKELY(other_param_type == nullptr)) { |
| 3853 | ThrowSignatureCheckResolveArgException(klass, super_klass, method1, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3854 | method2, i, other_param_type_idx); |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3855 | return false; |
| 3856 | } |
Vladimir Marko | 862f43c | 2015-02-10 18:22:57 +0000 | [diff] [blame] | 3857 | if (UNLIKELY(param_type.Get() != other_param_type)) { |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3858 | ThrowSignatureMismatch(klass, super_klass, method1, |
| 3859 | StringPrintf("Parameter %u type mismatch: %s(%p) vs %s(%p)", |
| 3860 | i, |
| 3861 | PrettyClassAndClassLoader(param_type.Get()).c_str(), |
| 3862 | param_type.Get(), |
| 3863 | PrettyClassAndClassLoader(other_param_type).c_str(), |
| 3864 | other_param_type)); |
Ian Rogers | b5fb207 | 2014-12-02 17:22:02 -0800 | [diff] [blame] | 3865 | return false; |
| 3866 | } |
| 3867 | } |
| 3868 | return true; |
| 3869 | } |
| 3870 | |
| 3871 | |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 3872 | bool ClassLinker::ValidateSuperClassDescriptors(Handle<mirror::Class> klass) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3873 | if (klass->IsInterface()) { |
| 3874 | return true; |
| 3875 | } |
Ian Rogers | 151f221 | 2014-05-06 11:27:27 -0700 | [diff] [blame] | 3876 | // Begin with the methods local to the superclass. |
Ian Rogers | ded66a0 | 2014-10-28 18:12:55 -0700 | [diff] [blame] | 3877 | Thread* self = Thread::Current(); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3878 | StackHandleScope<1> hs(self); |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3879 | MutableHandle<mirror::Class> super_klass(hs.NewHandle<mirror::Class>(nullptr)); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3880 | if (klass->HasSuperClass() && |
| 3881 | klass->GetClassLoader() != klass->GetSuperClass()->GetClassLoader()) { |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3882 | super_klass.Assign(klass->GetSuperClass()); |
Mingyao Yang | 2cdbad7 | 2014-07-16 10:44:41 -0700 | [diff] [blame] | 3883 | for (int i = klass->GetSuperClass()->GetVTableLength() - 1; i >= 0; --i) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3884 | auto* m = klass->GetVTableEntry(i, image_pointer_size_); |
| 3885 | auto* super_m = klass->GetSuperClass()->GetVTableEntry(i, image_pointer_size_); |
| 3886 | if (m != super_m) { |
Vladimir Marko | 05792b9 | 2015-08-03 11:56:49 +0100 | [diff] [blame] | 3887 | if (UNLIKELY(!HasSameSignatureWithDifferentClassLoaders(self, image_pointer_size_, |
| 3888 | klass, super_klass, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3889 | m, super_m))) { |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3890 | self->AssertPendingException(); |
Andreas Gampe | d8ca52e | 2015-02-13 15:23:18 -0800 | [diff] [blame] | 3891 | return false; |
| 3892 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3893 | } |
| 3894 | } |
| 3895 | } |
Brian Carlstrom | 4b620ff | 2011-09-11 01:11:01 -0700 | [diff] [blame] | 3896 | for (int32_t i = 0; i < klass->GetIfTableCount(); ++i) { |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3897 | super_klass.Assign(klass->GetIfTable()->GetInterface(i)); |
| 3898 | if (klass->GetClassLoader() != super_klass->GetClassLoader()) { |
| 3899 | uint32_t num_methods = super_klass->NumVirtualMethods(); |
Ian Rogers | 151f221 | 2014-05-06 11:27:27 -0700 | [diff] [blame] | 3900 | for (uint32_t j = 0; j < num_methods; ++j) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3901 | auto* m = klass->GetIfTable()->GetMethodArray(i)->GetElementPtrSize<ArtMethod*>( |
| 3902 | j, image_pointer_size_); |
| 3903 | auto* super_m = super_klass->GetVirtualMethod(j, image_pointer_size_); |
| 3904 | if (m != super_m) { |
Vladimir Marko | 05792b9 | 2015-08-03 11:56:49 +0100 | [diff] [blame] | 3905 | if (UNLIKELY(!HasSameSignatureWithDifferentClassLoaders(self, image_pointer_size_, |
| 3906 | klass, super_klass, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3907 | m, super_m))) { |
Vladimir Marko | d5e5a0e | 2015-05-08 12:26:59 +0100 | [diff] [blame] | 3908 | self->AssertPendingException(); |
Andreas Gampe | d8ca52e | 2015-02-13 15:23:18 -0800 | [diff] [blame] | 3909 | return false; |
| 3910 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 3911 | } |
| 3912 | } |
| 3913 | } |
| 3914 | } |
| 3915 | return true; |
| 3916 | } |
| 3917 | |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 3918 | bool ClassLinker::EnsureInitialized(Thread* self, Handle<mirror::Class> c, bool can_init_fields, |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 3919 | bool can_init_parents) { |
Mathieu Chartier | 0cd8135 | 2014-05-22 16:48:55 -0700 | [diff] [blame] | 3920 | DCHECK(c.Get() != nullptr); |
Mathieu Chartier | 524507a | 2014-08-27 15:28:28 -0700 | [diff] [blame] | 3921 | if (c->IsInitialized()) { |
Andreas Gampe | 4849859 | 2014-09-10 19:48:05 -0700 | [diff] [blame] | 3922 | EnsurePreverifiedMethods(c); |
Mathieu Chartier | 524507a | 2014-08-27 15:28:28 -0700 | [diff] [blame] | 3923 | return true; |
| 3924 | } |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 3925 | const bool success = InitializeClass(self, c, can_init_fields, can_init_parents); |
Mathieu Chartier | 524507a | 2014-08-27 15:28:28 -0700 | [diff] [blame] | 3926 | if (!success) { |
| 3927 | if (can_init_fields && can_init_parents) { |
| 3928 | CHECK(self->IsExceptionPending()) << PrettyClass(c.Get()); |
| 3929 | } |
| 3930 | } else { |
| 3931 | self->AssertNoPendingException(); |
Ian Rogers | 595799e | 2012-01-11 17:32:51 -0800 | [diff] [blame] | 3932 | } |
| 3933 | return success; |
Elliott Hughes | f4c21c9 | 2011-08-19 17:31:31 -0700 | [diff] [blame] | 3934 | } |
| 3935 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3936 | void ClassLinker::FixupTemporaryDeclaringClass(mirror::Class* temp_class, |
| 3937 | mirror::Class* new_class) { |
Mathieu Chartier | eb837eb | 2015-07-29 17:25:41 -0700 | [diff] [blame] | 3938 | DCHECK_EQ(temp_class->NumInstanceFields(), 0u); |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 3939 | for (ArtField& field : new_class->GetIFields()) { |
| 3940 | if (field.GetDeclaringClass() == temp_class) { |
| 3941 | field.SetDeclaringClass(new_class); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 3942 | } |
| 3943 | } |
| 3944 | |
Mathieu Chartier | eb837eb | 2015-07-29 17:25:41 -0700 | [diff] [blame] | 3945 | DCHECK_EQ(temp_class->NumStaticFields(), 0u); |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 3946 | for (ArtField& field : new_class->GetSFields()) { |
| 3947 | if (field.GetDeclaringClass() == temp_class) { |
| 3948 | field.SetDeclaringClass(new_class); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 3949 | } |
| 3950 | } |
| 3951 | |
Mathieu Chartier | eb837eb | 2015-07-29 17:25:41 -0700 | [diff] [blame] | 3952 | DCHECK_EQ(temp_class->NumDirectMethods(), 0u); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3953 | for (auto& method : new_class->GetDirectMethods(image_pointer_size_)) { |
| 3954 | if (method.GetDeclaringClass() == temp_class) { |
| 3955 | method.SetDeclaringClass(new_class); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 3956 | } |
| 3957 | } |
| 3958 | |
Mathieu Chartier | eb837eb | 2015-07-29 17:25:41 -0700 | [diff] [blame] | 3959 | DCHECK_EQ(temp_class->NumVirtualMethods(), 0u); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 3960 | for (auto& method : new_class->GetVirtualMethods(image_pointer_size_)) { |
| 3961 | if (method.GetDeclaringClass() == temp_class) { |
| 3962 | method.SetDeclaringClass(new_class); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 3963 | } |
| 3964 | } |
Mathieu Chartier | eb837eb | 2015-07-29 17:25:41 -0700 | [diff] [blame] | 3965 | |
| 3966 | // Make sure the remembered set and mod-union tables know that we updated some of the native |
| 3967 | // roots. |
| 3968 | Runtime::Current()->GetHeap()->WriteBarrierEveryFieldOf(new_class); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 3969 | } |
| 3970 | |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 3971 | ClassTable* ClassLinker::InsertClassTableForClassLoader(mirror::ClassLoader* class_loader) { |
Mathieu Chartier | 6b06953 | 2015-08-05 15:08:12 -0700 | [diff] [blame] | 3972 | if (class_loader == nullptr) { |
| 3973 | return &boot_class_table_; |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 3974 | } |
Mathieu Chartier | 6b06953 | 2015-08-05 15:08:12 -0700 | [diff] [blame] | 3975 | ClassTable* class_table = class_loader->GetClassTable(); |
| 3976 | if (class_table == nullptr) { |
| 3977 | class_table = new ClassTable; |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 3978 | Thread* const self = Thread::Current(); |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 3979 | ClassLoaderData data; |
| 3980 | data.weak_root = self->GetJniEnv()->vm->AddWeakGlobalRef(self, class_loader); |
| 3981 | data.class_table = class_table; |
Mathieu Chartier | 6b06953 | 2015-08-05 15:08:12 -0700 | [diff] [blame] | 3982 | // Don't already have a class table, add it to the class loader. |
Mathieu Chartier | c3fcd41 | 2015-09-25 16:54:59 -0700 | [diff] [blame] | 3983 | CHECK(class_loader->GetClassTable() == nullptr); |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 3984 | class_loader->SetClassTable(data.class_table); |
Mathieu Chartier | d57d454 | 2015-10-14 10:55:30 -0700 | [diff] [blame] | 3985 | // Should have been set when we registered the dex file. |
| 3986 | data.allocator = class_loader->GetAllocator(); |
| 3987 | CHECK(data.allocator != nullptr); |
| 3988 | class_loaders_.push_back(data); |
Mathieu Chartier | 6b06953 | 2015-08-05 15:08:12 -0700 | [diff] [blame] | 3989 | } |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 3990 | return class_table; |
| 3991 | } |
| 3992 | |
| 3993 | ClassTable* ClassLinker::ClassTableForClassLoader(mirror::ClassLoader* class_loader) { |
Mathieu Chartier | 6b06953 | 2015-08-05 15:08:12 -0700 | [diff] [blame] | 3994 | return class_loader == nullptr ? &boot_class_table_ : class_loader->GetClassTable(); |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 3995 | } |
| 3996 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 3997 | bool ClassLinker::LinkClass(Thread* self, |
| 3998 | const char* descriptor, |
| 3999 | Handle<mirror::Class> klass, |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 4000 | Handle<mirror::ObjectArray<mirror::Class>> interfaces, |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 4001 | MutableHandle<mirror::Class>* h_new_class_out) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 4002 | CHECK_EQ(mirror::Class::kStatusLoaded, klass->GetStatus()); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 4003 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4004 | if (!LinkSuperClass(klass)) { |
| 4005 | return false; |
| 4006 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4007 | ArtMethod* imt[mirror::Class::kImtSize]; |
| 4008 | std::fill_n(imt, arraysize(imt), Runtime::Current()->GetImtUnimplementedMethod()); |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 4009 | if (!LinkMethods(self, klass, interfaces, imt)) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4010 | return false; |
| 4011 | } |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 4012 | if (!LinkInstanceFields(self, klass)) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4013 | return false; |
| 4014 | } |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 4015 | size_t class_size; |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 4016 | if (!LinkStaticFields(self, klass, &class_size)) { |
Brian Carlstrom | 4873d46 | 2011-08-21 15:23:39 -0700 | [diff] [blame] | 4017 | return false; |
| 4018 | } |
| 4019 | CreateReferenceInstanceOffsets(klass); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 4020 | CHECK_EQ(mirror::Class::kStatusLoaded, klass->GetStatus()); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 4021 | |
| 4022 | if (!klass->IsTemp() || (!init_done_ && klass->GetClassSize() == class_size)) { |
| 4023 | // We don't need to retire this class as it has no embedded tables or it was created the |
| 4024 | // correct size during class linker initialization. |
| 4025 | CHECK_EQ(klass->GetClassSize(), class_size) << PrettyDescriptor(klass.Get()); |
| 4026 | |
| 4027 | if (klass->ShouldHaveEmbeddedImtAndVTable()) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4028 | klass->PopulateEmbeddedImtAndVTable(imt, image_pointer_size_); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 4029 | } |
| 4030 | |
| 4031 | // This will notify waiters on klass that saw the not yet resolved |
| 4032 | // class in the class_table_ during EnsureResolved. |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 4033 | mirror::Class::SetStatus(klass, mirror::Class::kStatusResolved, self); |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 4034 | h_new_class_out->Assign(klass.Get()); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 4035 | } else { |
| 4036 | CHECK(!klass->IsResolved()); |
| 4037 | // Retire the temporary class and create the correctly sized resolved class. |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 4038 | StackHandleScope<1> hs(self); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4039 | auto h_new_class = hs.NewHandle(klass->CopyOf(self, class_size, imt, image_pointer_size_)); |
Mathieu Chartier | 3ee25bb | 2015-08-10 10:13:02 -0700 | [diff] [blame] | 4040 | // Set arrays to null since we don't want to have multiple classes with the same ArtField or |
| 4041 | // ArtMethod array pointers. If this occurs, it causes bugs in remembered sets since the GC |
| 4042 | // may not see any references to the target space and clean the card for a class if another |
| 4043 | // class had the same array pointer. |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 4044 | klass->SetDirectMethodsPtrUnchecked(nullptr); |
| 4045 | klass->SetVirtualMethodsPtr(nullptr); |
| 4046 | klass->SetSFieldsPtrUnchecked(nullptr); |
| 4047 | klass->SetIFieldsPtrUnchecked(nullptr); |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 4048 | if (UNLIKELY(h_new_class.Get() == nullptr)) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4049 | self->AssertPendingOOMException(); |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 4050 | mirror::Class::SetStatus(klass, mirror::Class::kStatusError, self); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 4051 | return false; |
| 4052 | } |
| 4053 | |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 4054 | CHECK_EQ(h_new_class->GetClassSize(), class_size); |
| 4055 | ObjectLock<mirror::Class> lock(self, h_new_class); |
| 4056 | FixupTemporaryDeclaringClass(klass.Get(), h_new_class.Get()); |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 4057 | |
| 4058 | { |
Mathieu Chartier | eb837eb | 2015-07-29 17:25:41 -0700 | [diff] [blame] | 4059 | WriterMutexLock mu(self, *Locks::classlinker_classes_lock_); |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 4060 | mirror::ClassLoader* const class_loader = h_new_class.Get()->GetClassLoader(); |
| 4061 | ClassTable* const table = InsertClassTableForClassLoader(class_loader); |
| 4062 | mirror::Class* existing = table->UpdateClass(descriptor, h_new_class.Get(), |
| 4063 | ComputeModifiedUtf8Hash(descriptor)); |
Mathieu Chartier | 05aa4d3 | 2015-09-19 12:44:38 -0700 | [diff] [blame] | 4064 | if (class_loader != nullptr) { |
| 4065 | // We updated the class in the class table, perform the write barrier so that the GC knows |
| 4066 | // about the change. |
| 4067 | Runtime::Current()->GetHeap()->WriteBarrierEveryFieldOf(class_loader); |
| 4068 | } |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 4069 | CHECK_EQ(existing, klass.Get()); |
| 4070 | if (kIsDebugBuild && class_loader == nullptr && dex_cache_image_class_lookup_required_) { |
| 4071 | // Check a class loaded with the system class loader matches one in the image if the class |
| 4072 | // is in the image. |
| 4073 | mirror::Class* const image_class = LookupClassFromImage(descriptor); |
| 4074 | if (image_class != nullptr) { |
| 4075 | CHECK_EQ(klass.Get(), existing) << descriptor; |
| 4076 | } |
| 4077 | } |
| 4078 | if (log_new_class_table_roots_) { |
| 4079 | new_class_roots_.push_back(GcRoot<mirror::Class>(h_new_class.Get())); |
| 4080 | } |
| 4081 | } |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 4082 | |
| 4083 | // This will notify waiters on temp class that saw the not yet resolved class in the |
| 4084 | // class_table_ during EnsureResolved. |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 4085 | mirror::Class::SetStatus(klass, mirror::Class::kStatusRetired, self); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 4086 | |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 4087 | CHECK_EQ(h_new_class->GetStatus(), mirror::Class::kStatusResolving); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 4088 | // This will notify waiters on new_class that saw the not yet resolved |
| 4089 | // class in the class_table_ during EnsureResolved. |
Hiroshi Yamauchi | 679b1cf | 2015-05-21 12:05:27 -0700 | [diff] [blame] | 4090 | mirror::Class::SetStatus(h_new_class, mirror::Class::kStatusResolved, self); |
| 4091 | // Return the new class. |
| 4092 | h_new_class_out->Assign(h_new_class.Get()); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 4093 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4094 | return true; |
| 4095 | } |
| 4096 | |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 4097 | static void CountMethodsAndFields(ClassDataItemIterator& dex_data, |
| 4098 | size_t* virtual_methods, |
| 4099 | size_t* direct_methods, |
| 4100 | size_t* static_fields, |
| 4101 | size_t* instance_fields) { |
Andreas Gampe | fd9eb39 | 2014-11-06 16:52:58 -0800 | [diff] [blame] | 4102 | *virtual_methods = *direct_methods = *static_fields = *instance_fields = 0; |
| 4103 | |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 4104 | while (dex_data.HasNextStaticField()) { |
| 4105 | dex_data.Next(); |
Andreas Gampe | fd9eb39 | 2014-11-06 16:52:58 -0800 | [diff] [blame] | 4106 | (*static_fields)++; |
| 4107 | } |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 4108 | while (dex_data.HasNextInstanceField()) { |
| 4109 | dex_data.Next(); |
Andreas Gampe | fd9eb39 | 2014-11-06 16:52:58 -0800 | [diff] [blame] | 4110 | (*instance_fields)++; |
| 4111 | } |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 4112 | while (dex_data.HasNextDirectMethod()) { |
Andreas Gampe | fd9eb39 | 2014-11-06 16:52:58 -0800 | [diff] [blame] | 4113 | (*direct_methods)++; |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 4114 | dex_data.Next(); |
Andreas Gampe | fd9eb39 | 2014-11-06 16:52:58 -0800 | [diff] [blame] | 4115 | } |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 4116 | while (dex_data.HasNextVirtualMethod()) { |
Andreas Gampe | fd9eb39 | 2014-11-06 16:52:58 -0800 | [diff] [blame] | 4117 | (*virtual_methods)++; |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 4118 | dex_data.Next(); |
Andreas Gampe | fd9eb39 | 2014-11-06 16:52:58 -0800 | [diff] [blame] | 4119 | } |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 4120 | DCHECK(!dex_data.HasNext()); |
Andreas Gampe | fd9eb39 | 2014-11-06 16:52:58 -0800 | [diff] [blame] | 4121 | } |
| 4122 | |
| 4123 | static void DumpClass(std::ostream& os, |
| 4124 | const DexFile& dex_file, const DexFile::ClassDef& dex_class_def, |
| 4125 | const char* suffix) { |
| 4126 | ClassDataItemIterator dex_data(dex_file, dex_file.GetClassData(dex_class_def)); |
| 4127 | os << dex_file.GetClassDescriptor(dex_class_def) << suffix << ":\n"; |
| 4128 | os << " Static fields:\n"; |
| 4129 | while (dex_data.HasNextStaticField()) { |
| 4130 | const DexFile::FieldId& id = dex_file.GetFieldId(dex_data.GetMemberIndex()); |
| 4131 | os << " " << dex_file.GetFieldTypeDescriptor(id) << " " << dex_file.GetFieldName(id) << "\n"; |
| 4132 | dex_data.Next(); |
| 4133 | } |
| 4134 | os << " Instance fields:\n"; |
| 4135 | while (dex_data.HasNextInstanceField()) { |
| 4136 | const DexFile::FieldId& id = dex_file.GetFieldId(dex_data.GetMemberIndex()); |
| 4137 | os << " " << dex_file.GetFieldTypeDescriptor(id) << " " << dex_file.GetFieldName(id) << "\n"; |
| 4138 | dex_data.Next(); |
| 4139 | } |
| 4140 | os << " Direct methods:\n"; |
| 4141 | while (dex_data.HasNextDirectMethod()) { |
| 4142 | const DexFile::MethodId& id = dex_file.GetMethodId(dex_data.GetMemberIndex()); |
| 4143 | os << " " << dex_file.GetMethodName(id) << dex_file.GetMethodSignature(id).ToString() << "\n"; |
| 4144 | dex_data.Next(); |
| 4145 | } |
| 4146 | os << " Virtual methods:\n"; |
| 4147 | while (dex_data.HasNextVirtualMethod()) { |
| 4148 | const DexFile::MethodId& id = dex_file.GetMethodId(dex_data.GetMemberIndex()); |
| 4149 | os << " " << dex_file.GetMethodName(id) << dex_file.GetMethodSignature(id).ToString() << "\n"; |
| 4150 | dex_data.Next(); |
| 4151 | } |
| 4152 | } |
| 4153 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 4154 | static std::string DumpClasses(const DexFile& dex_file1, |
| 4155 | const DexFile::ClassDef& dex_class_def1, |
| 4156 | const DexFile& dex_file2, |
| 4157 | const DexFile::ClassDef& dex_class_def2) { |
Andreas Gampe | fd9eb39 | 2014-11-06 16:52:58 -0800 | [diff] [blame] | 4158 | std::ostringstream os; |
| 4159 | DumpClass(os, dex_file1, dex_class_def1, " (Compile time)"); |
| 4160 | DumpClass(os, dex_file2, dex_class_def2, " (Runtime)"); |
| 4161 | return os.str(); |
| 4162 | } |
| 4163 | |
| 4164 | |
| 4165 | // Very simple structural check on whether the classes match. Only compares the number of |
| 4166 | // methods and fields. |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 4167 | static bool SimpleStructuralCheck(const DexFile& dex_file1, |
| 4168 | const DexFile::ClassDef& dex_class_def1, |
| 4169 | const DexFile& dex_file2, |
| 4170 | const DexFile::ClassDef& dex_class_def2, |
Andreas Gampe | fd9eb39 | 2014-11-06 16:52:58 -0800 | [diff] [blame] | 4171 | std::string* error_msg) { |
| 4172 | ClassDataItemIterator dex_data1(dex_file1, dex_file1.GetClassData(dex_class_def1)); |
| 4173 | ClassDataItemIterator dex_data2(dex_file2, dex_file2.GetClassData(dex_class_def2)); |
| 4174 | |
| 4175 | // Counters for current dex file. |
| 4176 | size_t dex_virtual_methods1, dex_direct_methods1, dex_static_fields1, dex_instance_fields1; |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 4177 | CountMethodsAndFields(dex_data1, |
| 4178 | &dex_virtual_methods1, |
| 4179 | &dex_direct_methods1, |
| 4180 | &dex_static_fields1, |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 4181 | &dex_instance_fields1); |
Andreas Gampe | fd9eb39 | 2014-11-06 16:52:58 -0800 | [diff] [blame] | 4182 | // Counters for compile-time dex file. |
| 4183 | size_t dex_virtual_methods2, dex_direct_methods2, dex_static_fields2, dex_instance_fields2; |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 4184 | CountMethodsAndFields(dex_data2, |
| 4185 | &dex_virtual_methods2, |
| 4186 | &dex_direct_methods2, |
| 4187 | &dex_static_fields2, |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 4188 | &dex_instance_fields2); |
Andreas Gampe | fd9eb39 | 2014-11-06 16:52:58 -0800 | [diff] [blame] | 4189 | |
| 4190 | if (dex_virtual_methods1 != dex_virtual_methods2) { |
| 4191 | std::string class_dump = DumpClasses(dex_file1, dex_class_def1, dex_file2, dex_class_def2); |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 4192 | *error_msg = StringPrintf("Virtual method count off: %zu vs %zu\n%s", |
| 4193 | dex_virtual_methods1, |
| 4194 | dex_virtual_methods2, |
| 4195 | class_dump.c_str()); |
Andreas Gampe | fd9eb39 | 2014-11-06 16:52:58 -0800 | [diff] [blame] | 4196 | return false; |
| 4197 | } |
| 4198 | if (dex_direct_methods1 != dex_direct_methods2) { |
| 4199 | std::string class_dump = DumpClasses(dex_file1, dex_class_def1, dex_file2, dex_class_def2); |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 4200 | *error_msg = StringPrintf("Direct method count off: %zu vs %zu\n%s", |
| 4201 | dex_direct_methods1, |
| 4202 | dex_direct_methods2, |
| 4203 | class_dump.c_str()); |
Andreas Gampe | fd9eb39 | 2014-11-06 16:52:58 -0800 | [diff] [blame] | 4204 | return false; |
| 4205 | } |
| 4206 | if (dex_static_fields1 != dex_static_fields2) { |
| 4207 | std::string class_dump = DumpClasses(dex_file1, dex_class_def1, dex_file2, dex_class_def2); |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 4208 | *error_msg = StringPrintf("Static field count off: %zu vs %zu\n%s", |
| 4209 | dex_static_fields1, |
| 4210 | dex_static_fields2, |
| 4211 | class_dump.c_str()); |
Andreas Gampe | fd9eb39 | 2014-11-06 16:52:58 -0800 | [diff] [blame] | 4212 | return false; |
| 4213 | } |
| 4214 | if (dex_instance_fields1 != dex_instance_fields2) { |
| 4215 | std::string class_dump = DumpClasses(dex_file1, dex_class_def1, dex_file2, dex_class_def2); |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 4216 | *error_msg = StringPrintf("Instance field count off: %zu vs %zu\n%s", |
| 4217 | dex_instance_fields1, |
| 4218 | dex_instance_fields2, |
| 4219 | class_dump.c_str()); |
Andreas Gampe | fd9eb39 | 2014-11-06 16:52:58 -0800 | [diff] [blame] | 4220 | return false; |
| 4221 | } |
| 4222 | |
| 4223 | return true; |
| 4224 | } |
| 4225 | |
| 4226 | // Checks whether a the super-class changed from what we had at compile-time. This would |
| 4227 | // invalidate quickening. |
| 4228 | static bool CheckSuperClassChange(Handle<mirror::Class> klass, |
| 4229 | const DexFile& dex_file, |
| 4230 | const DexFile::ClassDef& class_def, |
| 4231 | mirror::Class* super_class) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 4232 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Andreas Gampe | fd9eb39 | 2014-11-06 16:52:58 -0800 | [diff] [blame] | 4233 | // Check for unexpected changes in the superclass. |
| 4234 | // Quick check 1) is the super_class class-loader the boot class loader? This always has |
| 4235 | // precedence. |
| 4236 | if (super_class->GetClassLoader() != nullptr && |
| 4237 | // Quick check 2) different dex cache? Breaks can only occur for different dex files, |
| 4238 | // which is implied by different dex cache. |
| 4239 | klass->GetDexCache() != super_class->GetDexCache()) { |
| 4240 | // Now comes the expensive part: things can be broken if (a) the klass' dex file has a |
| 4241 | // definition for the super-class, and (b) the files are in separate oat files. The oat files |
| 4242 | // are referenced from the dex file, so do (b) first. Only relevant if we have oat files. |
Richard Uhler | 07b3c23 | 2015-03-31 15:57:54 -0700 | [diff] [blame] | 4243 | const OatDexFile* class_oat_dex_file = dex_file.GetOatDexFile(); |
| 4244 | const OatFile* class_oat_file = nullptr; |
| 4245 | if (class_oat_dex_file != nullptr) { |
| 4246 | class_oat_file = class_oat_dex_file->GetOatFile(); |
| 4247 | } |
| 4248 | |
Andreas Gampe | fd9eb39 | 2014-11-06 16:52:58 -0800 | [diff] [blame] | 4249 | if (class_oat_file != nullptr) { |
Richard Uhler | 07b3c23 | 2015-03-31 15:57:54 -0700 | [diff] [blame] | 4250 | const OatDexFile* loaded_super_oat_dex_file = super_class->GetDexFile().GetOatDexFile(); |
| 4251 | const OatFile* loaded_super_oat_file = nullptr; |
| 4252 | if (loaded_super_oat_dex_file != nullptr) { |
| 4253 | loaded_super_oat_file = loaded_super_oat_dex_file->GetOatFile(); |
| 4254 | } |
| 4255 | |
Andreas Gampe | fd9eb39 | 2014-11-06 16:52:58 -0800 | [diff] [blame] | 4256 | if (loaded_super_oat_file != nullptr && class_oat_file != loaded_super_oat_file) { |
| 4257 | // Now check (a). |
| 4258 | const DexFile::ClassDef* super_class_def = dex_file.FindClassDef(class_def.superclass_idx_); |
| 4259 | if (super_class_def != nullptr) { |
| 4260 | // Uh-oh, we found something. Do our check. |
| 4261 | std::string error_msg; |
| 4262 | if (!SimpleStructuralCheck(dex_file, *super_class_def, |
| 4263 | super_class->GetDexFile(), *super_class->GetClassDef(), |
| 4264 | &error_msg)) { |
| 4265 | // Print a warning to the log. This exception might be caught, e.g., as common in test |
| 4266 | // drivers. When the class is later tried to be used, we re-throw a new instance, as we |
| 4267 | // only save the type of the exception. |
| 4268 | LOG(WARNING) << "Incompatible structural change detected: " << |
| 4269 | StringPrintf( |
| 4270 | "Structural change of %s is hazardous (%s at compile time, %s at runtime): %s", |
| 4271 | PrettyType(super_class_def->class_idx_, dex_file).c_str(), |
| 4272 | class_oat_file->GetLocation().c_str(), |
| 4273 | loaded_super_oat_file->GetLocation().c_str(), |
| 4274 | error_msg.c_str()); |
| 4275 | ThrowIncompatibleClassChangeError(klass.Get(), |
| 4276 | "Structural change of %s is hazardous (%s at compile time, %s at runtime): %s", |
| 4277 | PrettyType(super_class_def->class_idx_, dex_file).c_str(), |
| 4278 | class_oat_file->GetLocation().c_str(), |
| 4279 | loaded_super_oat_file->GetLocation().c_str(), |
| 4280 | error_msg.c_str()); |
| 4281 | return false; |
| 4282 | } |
| 4283 | } |
| 4284 | } |
| 4285 | } |
| 4286 | } |
| 4287 | return true; |
| 4288 | } |
| 4289 | |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 4290 | bool ClassLinker::LoadSuperAndInterfaces(Handle<mirror::Class> klass, const DexFile& dex_file) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 4291 | CHECK_EQ(mirror::Class::kStatusIdx, klass->GetStatus()); |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 4292 | const DexFile::ClassDef& class_def = dex_file.GetClassDef(klass->GetDexClassDefIndex()); |
| 4293 | uint16_t super_class_idx = class_def.superclass_idx_; |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 4294 | if (super_class_idx != DexFile::kDexNoIndex16) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 4295 | mirror::Class* super_class = ResolveType(dex_file, super_class_idx, klass.Get()); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 4296 | if (super_class == nullptr) { |
Brian Carlstrom | 65ca077 | 2011-09-24 16:03:08 -0700 | [diff] [blame] | 4297 | DCHECK(Thread::Current()->IsExceptionPending()); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4298 | return false; |
| 4299 | } |
Ian Rogers | be125a9 | 2012-01-11 15:19:49 -0800 | [diff] [blame] | 4300 | // Verify |
| 4301 | if (!klass->CanAccess(super_class)) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 4302 | ThrowIllegalAccessError(klass.Get(), "Class %s extended by class %s is inaccessible", |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 4303 | PrettyDescriptor(super_class).c_str(), |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 4304 | PrettyDescriptor(klass.Get()).c_str()); |
Ian Rogers | be125a9 | 2012-01-11 15:19:49 -0800 | [diff] [blame] | 4305 | return false; |
| 4306 | } |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 4307 | CHECK(super_class->IsResolved()); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 4308 | klass->SetSuperClass(super_class); |
Andreas Gampe | fd9eb39 | 2014-11-06 16:52:58 -0800 | [diff] [blame] | 4309 | |
| 4310 | if (!CheckSuperClassChange(klass, dex_file, class_def, super_class)) { |
| 4311 | DCHECK(Thread::Current()->IsExceptionPending()); |
| 4312 | return false; |
| 4313 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4314 | } |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 4315 | const DexFile::TypeList* interfaces = dex_file.GetInterfacesList(class_def); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 4316 | if (interfaces != nullptr) { |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 4317 | for (size_t i = 0; i < interfaces->Size(); i++) { |
| 4318 | uint16_t idx = interfaces->GetTypeItem(i).type_idx_; |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 4319 | mirror::Class* interface = ResolveType(dex_file, idx, klass.Get()); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 4320 | if (interface == nullptr) { |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 4321 | DCHECK(Thread::Current()->IsExceptionPending()); |
| 4322 | return false; |
| 4323 | } |
| 4324 | // Verify |
| 4325 | if (!klass->CanAccess(interface)) { |
| 4326 | // TODO: the RI seemed to ignore this in my testing. |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 4327 | ThrowIllegalAccessError(klass.Get(), |
| 4328 | "Interface %s implemented by class %s is inaccessible", |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 4329 | PrettyDescriptor(interface).c_str(), |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 4330 | PrettyDescriptor(klass.Get()).c_str()); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 4331 | return false; |
| 4332 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4333 | } |
| 4334 | } |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 4335 | // Mark the class as loaded. |
Hiroshi Yamauchi | 5b783e6 | 2015-03-18 17:20:11 -0700 | [diff] [blame] | 4336 | mirror::Class::SetStatus(klass, mirror::Class::kStatusLoaded, nullptr); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4337 | return true; |
| 4338 | } |
| 4339 | |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 4340 | bool ClassLinker::LinkSuperClass(Handle<mirror::Class> klass) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4341 | CHECK(!klass->IsPrimitive()); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 4342 | mirror::Class* super = klass->GetSuperClass(); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 4343 | if (klass.Get() == GetClassRoot(kJavaLangObject)) { |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 4344 | if (super != nullptr) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 4345 | ThrowClassFormatError(klass.Get(), "java.lang.Object must not have a superclass"); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4346 | return false; |
| 4347 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4348 | return true; |
| 4349 | } |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 4350 | if (super == nullptr) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 4351 | ThrowLinkageError(klass.Get(), "No superclass defined for class %s", |
| 4352 | PrettyDescriptor(klass.Get()).c_str()); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4353 | return false; |
| 4354 | } |
| 4355 | // Verify |
Elliott Hughes | 4a2b417 | 2011-09-20 17:08:25 -0700 | [diff] [blame] | 4356 | if (super->IsFinal() || super->IsInterface()) { |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 4357 | ThrowIncompatibleClassChangeError(klass.Get(), |
| 4358 | "Superclass %s of %s is %s", |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 4359 | PrettyDescriptor(super).c_str(), |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 4360 | PrettyDescriptor(klass.Get()).c_str(), |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 4361 | super->IsFinal() ? "declared final" : "an interface"); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4362 | return false; |
| 4363 | } |
| 4364 | if (!klass->CanAccess(super)) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 4365 | ThrowIllegalAccessError(klass.Get(), "Superclass %s is inaccessible to class %s", |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 4366 | PrettyDescriptor(super).c_str(), |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 4367 | PrettyDescriptor(klass.Get()).c_str()); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4368 | return false; |
| 4369 | } |
Elliott Hughes | 20cde90 | 2011-10-04 17:37:27 -0700 | [diff] [blame] | 4370 | |
Brian Carlstrom | f363283 | 2014-05-20 15:36:53 -0700 | [diff] [blame] | 4371 | // Inherit kAccClassIsFinalizable from the superclass in case this |
| 4372 | // class doesn't override finalize. |
Elliott Hughes | 20cde90 | 2011-10-04 17:37:27 -0700 | [diff] [blame] | 4373 | if (super->IsFinalizable()) { |
| 4374 | klass->SetFinalizable(); |
| 4375 | } |
| 4376 | |
Mathieu Chartier | e4275c0 | 2015-08-06 15:34:15 -0700 | [diff] [blame] | 4377 | // Inherit class loader flag form super class. |
| 4378 | if (super->IsClassLoaderClass()) { |
| 4379 | klass->SetClassLoaderClass(); |
| 4380 | } |
| 4381 | |
Elliott Hughes | 2da5036 | 2011-10-10 16:57:08 -0700 | [diff] [blame] | 4382 | // Inherit reference flags (if any) from the superclass. |
Mathieu Chartier | 66c2d2d | 2015-08-25 14:32:32 -0700 | [diff] [blame] | 4383 | uint32_t reference_flags = (super->GetClassFlags() & mirror::kClassFlagReference); |
Elliott Hughes | 2da5036 | 2011-10-10 16:57:08 -0700 | [diff] [blame] | 4384 | if (reference_flags != 0) { |
Mathieu Chartier | 66c2d2d | 2015-08-25 14:32:32 -0700 | [diff] [blame] | 4385 | CHECK_EQ(klass->GetClassFlags(), 0u); |
Mathieu Chartier | 52a7f5c | 2015-08-18 18:35:52 -0700 | [diff] [blame] | 4386 | klass->SetClassFlags(klass->GetClassFlags() | reference_flags); |
Elliott Hughes | 2da5036 | 2011-10-10 16:57:08 -0700 | [diff] [blame] | 4387 | } |
Elliott Hughes | 72ee0ae | 2011-10-10 17:31:28 -0700 | [diff] [blame] | 4388 | // Disallow custom direct subclasses of java.lang.ref.Reference. |
Elliott Hughes | bf61ba3 | 2011-10-11 10:53:09 -0700 | [diff] [blame] | 4389 | if (init_done_ && super == GetClassRoot(kJavaLangRefReference)) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 4390 | ThrowLinkageError(klass.Get(), |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 4391 | "Class %s attempts to subclass java.lang.ref.Reference, which is not allowed", |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 4392 | PrettyDescriptor(klass.Get()).c_str()); |
Elliott Hughes | 72ee0ae | 2011-10-10 17:31:28 -0700 | [diff] [blame] | 4393 | return false; |
| 4394 | } |
Elliott Hughes | 2da5036 | 2011-10-10 16:57:08 -0700 | [diff] [blame] | 4395 | |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 4396 | if (kIsDebugBuild) { |
| 4397 | // Ensure super classes are fully resolved prior to resolving fields.. |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 4398 | while (super != nullptr) { |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 4399 | CHECK(super->IsResolved()); |
| 4400 | super = super->GetSuperClass(); |
| 4401 | } |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 4402 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4403 | return true; |
| 4404 | } |
| 4405 | |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 4406 | // Populate the class vtable and itable. Compute return type indices. |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 4407 | bool ClassLinker::LinkMethods(Thread* self, |
| 4408 | Handle<mirror::Class> klass, |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 4409 | Handle<mirror::ObjectArray<mirror::Class>> interfaces, |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 4410 | ArtMethod** out_imt) { |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 4411 | self->AllowThreadSuspension(); |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 4412 | // A map from vtable indexes to the method they need to be updated to point to. Used because we |
| 4413 | // need to have default methods be in the virtuals array of each class but we don't set that up |
| 4414 | // until LinkInterfaceMethods. |
| 4415 | std::unordered_map<size_t, ArtMethod*> default_translations; |
| 4416 | // Link virtual methods then interface methods. |
| 4417 | // We set up the interface lookup table first because we need it to determine if we need to update |
| 4418 | // any vtable entries with new default method implementations. |
| 4419 | return SetupInterfaceLookupTable(self, klass, interfaces) |
| 4420 | && LinkVirtualMethods(self, klass, /*out*/ &default_translations) |
| 4421 | && LinkInterfaceMethods(self, klass, default_translations, out_imt); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4422 | } |
| 4423 | |
Ian Rogers | 03b6eaf | 2014-10-28 09:34:57 -0700 | [diff] [blame] | 4424 | // Comparator for name and signature of a method, used in finding overriding methods. Implementation |
| 4425 | // avoids the use of handles, if it didn't then rather than compare dex files we could compare dex |
| 4426 | // caches in the implementation below. |
| 4427 | class MethodNameAndSignatureComparator FINAL : public ValueObject { |
| 4428 | public: |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4429 | explicit MethodNameAndSignatureComparator(ArtMethod* method) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 4430 | SHARED_REQUIRES(Locks::mutator_lock_) : |
Ian Rogers | 03b6eaf | 2014-10-28 09:34:57 -0700 | [diff] [blame] | 4431 | dex_file_(method->GetDexFile()), mid_(&dex_file_->GetMethodId(method->GetDexMethodIndex())), |
| 4432 | name_(nullptr), name_len_(0) { |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4433 | DCHECK(!method->IsProxyMethod()) << PrettyMethod(method); |
| 4434 | } |
| 4435 | |
| 4436 | const char* GetName() { |
| 4437 | if (name_ == nullptr) { |
| 4438 | name_ = dex_file_->StringDataAndUtf16LengthByIdx(mid_->name_idx_, &name_len_); |
| 4439 | } |
| 4440 | return name_; |
Ian Rogers | 03b6eaf | 2014-10-28 09:34:57 -0700 | [diff] [blame] | 4441 | } |
| 4442 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4443 | bool HasSameNameAndSignature(ArtMethod* other) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 4444 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Ian Rogers | 03b6eaf | 2014-10-28 09:34:57 -0700 | [diff] [blame] | 4445 | DCHECK(!other->IsProxyMethod()) << PrettyMethod(other); |
| 4446 | const DexFile* other_dex_file = other->GetDexFile(); |
| 4447 | const DexFile::MethodId& other_mid = other_dex_file->GetMethodId(other->GetDexMethodIndex()); |
| 4448 | if (dex_file_ == other_dex_file) { |
| 4449 | return mid_->name_idx_ == other_mid.name_idx_ && mid_->proto_idx_ == other_mid.proto_idx_; |
| 4450 | } |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4451 | GetName(); // Only used to make sure its calculated. |
Ian Rogers | 03b6eaf | 2014-10-28 09:34:57 -0700 | [diff] [blame] | 4452 | uint32_t other_name_len; |
| 4453 | const char* other_name = other_dex_file->StringDataAndUtf16LengthByIdx(other_mid.name_idx_, |
| 4454 | &other_name_len); |
| 4455 | if (name_len_ != other_name_len || strcmp(name_, other_name) != 0) { |
| 4456 | return false; |
| 4457 | } |
| 4458 | return dex_file_->GetMethodSignature(*mid_) == other_dex_file->GetMethodSignature(other_mid); |
| 4459 | } |
| 4460 | |
| 4461 | private: |
| 4462 | // Dex file for the method to compare against. |
| 4463 | const DexFile* const dex_file_; |
| 4464 | // MethodId for the method to compare against. |
| 4465 | const DexFile::MethodId* const mid_; |
| 4466 | // Lazily computed name from the dex file's strings. |
| 4467 | const char* name_; |
| 4468 | // Lazily computed name length. |
| 4469 | uint32_t name_len_; |
| 4470 | }; |
| 4471 | |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4472 | class LinkVirtualHashTable { |
| 4473 | public: |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 4474 | LinkVirtualHashTable(Handle<mirror::Class> klass, |
| 4475 | size_t hash_size, |
| 4476 | uint32_t* hash_table, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4477 | size_t image_pointer_size) |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 4478 | : klass_(klass), |
| 4479 | hash_size_(hash_size), |
| 4480 | hash_table_(hash_table), |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4481 | image_pointer_size_(image_pointer_size) { |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4482 | std::fill(hash_table_, hash_table_ + hash_size_, invalid_index_); |
| 4483 | } |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 4484 | |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 4485 | void Add(uint32_t virtual_method_index) SHARED_REQUIRES(Locks::mutator_lock_) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4486 | ArtMethod* local_method = klass_->GetVirtualMethodDuringLinking( |
| 4487 | virtual_method_index, image_pointer_size_); |
| 4488 | const char* name = local_method->GetInterfaceMethodIfProxy(image_pointer_size_)->GetName(); |
Mathieu Chartier | e7c9a8c | 2014-11-06 16:35:45 -0800 | [diff] [blame] | 4489 | uint32_t hash = ComputeModifiedUtf8Hash(name); |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4490 | uint32_t index = hash % hash_size_; |
| 4491 | // Linear probe until we have an empty slot. |
| 4492 | while (hash_table_[index] != invalid_index_) { |
| 4493 | if (++index == hash_size_) { |
| 4494 | index = 0; |
| 4495 | } |
| 4496 | } |
| 4497 | hash_table_[index] = virtual_method_index; |
| 4498 | } |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 4499 | |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4500 | uint32_t FindAndRemove(MethodNameAndSignatureComparator* comparator) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 4501 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4502 | const char* name = comparator->GetName(); |
Mathieu Chartier | e7c9a8c | 2014-11-06 16:35:45 -0800 | [diff] [blame] | 4503 | uint32_t hash = ComputeModifiedUtf8Hash(name); |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4504 | size_t index = hash % hash_size_; |
| 4505 | while (true) { |
| 4506 | const uint32_t value = hash_table_[index]; |
| 4507 | // Since linear probe makes continuous blocks, hitting an invalid index means we are done |
| 4508 | // the block and can safely assume not found. |
| 4509 | if (value == invalid_index_) { |
| 4510 | break; |
| 4511 | } |
| 4512 | if (value != removed_index_) { // This signifies not already overriden. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4513 | ArtMethod* virtual_method = |
| 4514 | klass_->GetVirtualMethodDuringLinking(value, image_pointer_size_); |
| 4515 | if (comparator->HasSameNameAndSignature( |
| 4516 | virtual_method->GetInterfaceMethodIfProxy(image_pointer_size_))) { |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4517 | hash_table_[index] = removed_index_; |
| 4518 | return value; |
| 4519 | } |
| 4520 | } |
| 4521 | if (++index == hash_size_) { |
| 4522 | index = 0; |
| 4523 | } |
| 4524 | } |
| 4525 | return GetNotFoundIndex(); |
| 4526 | } |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 4527 | |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4528 | static uint32_t GetNotFoundIndex() { |
| 4529 | return invalid_index_; |
| 4530 | } |
| 4531 | |
| 4532 | private: |
| 4533 | static const uint32_t invalid_index_; |
| 4534 | static const uint32_t removed_index_; |
| 4535 | |
| 4536 | Handle<mirror::Class> klass_; |
| 4537 | const size_t hash_size_; |
| 4538 | uint32_t* const hash_table_; |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4539 | const size_t image_pointer_size_; |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4540 | }; |
| 4541 | |
| 4542 | const uint32_t LinkVirtualHashTable::invalid_index_ = std::numeric_limits<uint32_t>::max(); |
| 4543 | const uint32_t LinkVirtualHashTable::removed_index_ = std::numeric_limits<uint32_t>::max() - 1; |
| 4544 | |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 4545 | bool ClassLinker::LinkVirtualMethods( |
| 4546 | Thread* self, |
| 4547 | Handle<mirror::Class> klass, |
| 4548 | /*out*/std::unordered_map<size_t, ArtMethod*>* default_translations) { |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 4549 | const size_t num_virtual_methods = klass->NumVirtualMethods(); |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 4550 | if (klass->IsInterface()) { |
| 4551 | // No vtable. |
| 4552 | if (!IsUint<16>(num_virtual_methods)) { |
| 4553 | ThrowClassFormatError(klass.Get(), "Too many methods on interface: %zu", num_virtual_methods); |
| 4554 | return false; |
| 4555 | } |
| 4556 | bool has_defaults = false; |
| 4557 | // TODO May need to replace this with real VTable for invoke_super |
| 4558 | // Assign each method an IMT index and set the default flag. |
| 4559 | for (size_t i = 0; i < num_virtual_methods; ++i) { |
| 4560 | ArtMethod* m = klass->GetVirtualMethodDuringLinking(i, image_pointer_size_); |
| 4561 | m->SetMethodIndex(i); |
| 4562 | if (!m->IsAbstract()) { |
| 4563 | m->SetAccessFlags(m->GetAccessFlags() | kAccDefault); |
| 4564 | has_defaults = true; |
| 4565 | } |
| 4566 | } |
| 4567 | // Mark that we have default methods so that we won't need to scan the virtual_methods_ array |
| 4568 | // during initialization. This is a performance optimization. We could simply traverse the |
| 4569 | // virtual_methods_ array again during initialization. |
| 4570 | if (has_defaults) { |
| 4571 | klass->SetHasDefaultMethods(); |
| 4572 | } |
| 4573 | return true; |
| 4574 | } else if (klass->HasSuperClass()) { |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 4575 | const size_t super_vtable_length = klass->GetSuperClass()->GetVTableLength(); |
| 4576 | const size_t max_count = num_virtual_methods + super_vtable_length; |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 4577 | StackHandleScope<2> hs(self); |
Mingyao Yang | 38eecb0 | 2014-08-13 14:51:03 -0700 | [diff] [blame] | 4578 | Handle<mirror::Class> super_class(hs.NewHandle(klass->GetSuperClass())); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4579 | MutableHandle<mirror::PointerArray> vtable; |
Mingyao Yang | 2cdbad7 | 2014-07-16 10:44:41 -0700 | [diff] [blame] | 4580 | if (super_class->ShouldHaveEmbeddedImtAndVTable()) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4581 | vtable = hs.NewHandle(AllocPointerArray(self, max_count)); |
Mingyao Yang | 2cdbad7 | 2014-07-16 10:44:41 -0700 | [diff] [blame] | 4582 | if (UNLIKELY(vtable.Get() == nullptr)) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4583 | self->AssertPendingOOMException(); |
Mingyao Yang | 2cdbad7 | 2014-07-16 10:44:41 -0700 | [diff] [blame] | 4584 | return false; |
| 4585 | } |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 4586 | for (size_t i = 0; i < super_vtable_length; i++) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4587 | vtable->SetElementPtrSize( |
| 4588 | i, super_class->GetEmbeddedVTableEntry(i, image_pointer_size_), image_pointer_size_); |
Mingyao Yang | 2cdbad7 | 2014-07-16 10:44:41 -0700 | [diff] [blame] | 4589 | } |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 4590 | // We might need to change vtable if we have new virtual methods or new interfaces (since that |
| 4591 | // might give us new default methods). If no new interfaces then we can skip the rest since |
| 4592 | // the class cannot override any of the super-class's methods. This is required for |
| 4593 | // correctness since without it we might not update overridden default method vtable entries |
| 4594 | // correctly. |
| 4595 | if (num_virtual_methods == 0 && super_class->GetIfTableCount() == klass->GetIfTableCount()) { |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4596 | klass->SetVTable(vtable.Get()); |
| 4597 | return true; |
| 4598 | } |
Mingyao Yang | 2cdbad7 | 2014-07-16 10:44:41 -0700 | [diff] [blame] | 4599 | } else { |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 4600 | DCHECK(super_class->IsAbstract() && !super_class->IsArrayClass()); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4601 | auto* super_vtable = super_class->GetVTable(); |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4602 | CHECK(super_vtable != nullptr) << PrettyClass(super_class.Get()); |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 4603 | // We might need to change vtable if we have new virtual methods or new interfaces (since that |
| 4604 | // might give us new default methods). See comment above. |
| 4605 | if (num_virtual_methods == 0 && super_class->GetIfTableCount() == klass->GetIfTableCount()) { |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4606 | klass->SetVTable(super_vtable); |
| 4607 | return true; |
| 4608 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4609 | vtable = hs.NewHandle(down_cast<mirror::PointerArray*>( |
| 4610 | super_vtable->CopyOf(self, max_count))); |
Mingyao Yang | 2cdbad7 | 2014-07-16 10:44:41 -0700 | [diff] [blame] | 4611 | if (UNLIKELY(vtable.Get() == nullptr)) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4612 | self->AssertPendingOOMException(); |
Mingyao Yang | 2cdbad7 | 2014-07-16 10:44:41 -0700 | [diff] [blame] | 4613 | return false; |
| 4614 | } |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 4615 | } |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4616 | // How the algorithm works: |
| 4617 | // 1. Populate hash table by adding num_virtual_methods from klass. The values in the hash |
| 4618 | // table are: invalid_index for unused slots, index super_vtable_length + i for a virtual |
| 4619 | // method which has not been matched to a vtable method, and j if the virtual method at the |
| 4620 | // index overrode the super virtual method at index j. |
| 4621 | // 2. Loop through super virtual methods, if they overwrite, update hash table to j |
| 4622 | // (j < super_vtable_length) to avoid redundant checks. (TODO maybe use this info for reducing |
| 4623 | // the need for the initial vtable which we later shrink back down). |
| 4624 | // 3. Add non overridden methods to the end of the vtable. |
| 4625 | static constexpr size_t kMaxStackHash = 250; |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 4626 | // + 1 so that even if we only have new default methods we will still be able to use this hash |
| 4627 | // table (i.e. it will never have 0 size). |
| 4628 | const size_t hash_table_size = num_virtual_methods * 3 + 1; |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4629 | uint32_t* hash_table_ptr; |
| 4630 | std::unique_ptr<uint32_t[]> hash_heap_storage; |
| 4631 | if (hash_table_size <= kMaxStackHash) { |
| 4632 | hash_table_ptr = reinterpret_cast<uint32_t*>( |
| 4633 | alloca(hash_table_size * sizeof(*hash_table_ptr))); |
| 4634 | } else { |
| 4635 | hash_heap_storage.reset(new uint32_t[hash_table_size]); |
| 4636 | hash_table_ptr = hash_heap_storage.get(); |
| 4637 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4638 | LinkVirtualHashTable hash_table(klass, hash_table_size, hash_table_ptr, image_pointer_size_); |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4639 | // Add virtual methods to the hash table. |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 4640 | for (size_t i = 0; i < num_virtual_methods; ++i) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4641 | DCHECK(klass->GetVirtualMethodDuringLinking( |
| 4642 | i, image_pointer_size_)->GetDeclaringClass() != nullptr); |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4643 | hash_table.Add(i); |
| 4644 | } |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 4645 | // Loop through each super vtable method and see if they are overridden by a method we added to |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4646 | // the hash table. |
| 4647 | for (size_t j = 0; j < super_vtable_length; ++j) { |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 4648 | // Search the hash table to see if we are overridden by any method. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4649 | ArtMethod* super_method = vtable->GetElementPtrSize<ArtMethod*>(j, image_pointer_size_); |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4650 | MethodNameAndSignatureComparator super_method_name_comparator( |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4651 | super_method->GetInterfaceMethodIfProxy(image_pointer_size_)); |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4652 | uint32_t hash_index = hash_table.FindAndRemove(&super_method_name_comparator); |
| 4653 | if (hash_index != hash_table.GetNotFoundIndex()) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4654 | ArtMethod* virtual_method = klass->GetVirtualMethodDuringLinking( |
| 4655 | hash_index, image_pointer_size_); |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4656 | if (klass->CanAccessMember(super_method->GetDeclaringClass(), |
| 4657 | super_method->GetAccessFlags())) { |
| 4658 | if (super_method->IsFinal()) { |
| 4659 | ThrowLinkageError(klass.Get(), "Method %s overrides final method in class %s", |
| 4660 | PrettyMethod(virtual_method).c_str(), |
| 4661 | super_method->GetDeclaringClassDescriptor()); |
| 4662 | return false; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4663 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4664 | vtable->SetElementPtrSize(j, virtual_method, image_pointer_size_); |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4665 | virtual_method->SetMethodIndex(j); |
| 4666 | } else { |
| 4667 | LOG(WARNING) << "Before Android 4.1, method " << PrettyMethod(virtual_method) |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 4668 | << " would have incorrectly overridden the package-private method in " |
| 4669 | << PrettyDescriptor(super_method->GetDeclaringClassDescriptor()); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4670 | } |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 4671 | } else if (super_method->IsDefault()) { |
| 4672 | // We didn't directly override this method but we might through default methods... |
| 4673 | // Check for default method update. |
| 4674 | ArtMethod* default_method = nullptr; |
| 4675 | std::string icce_message; |
| 4676 | if (!FindDefaultMethodImplementation(self, |
| 4677 | super_method, |
| 4678 | klass, |
| 4679 | /*out*/&default_method, |
| 4680 | /*out*/&icce_message)) { |
| 4681 | // An error occurred while finding default methods. |
| 4682 | // TODO This should actually be thrown when we attempt to invoke this method. |
| 4683 | ThrowIncompatibleClassChangeError(klass.Get(), "%s", icce_message.c_str()); |
| 4684 | return false; |
| 4685 | } |
| 4686 | // This should always work because we inherit superclass interfaces. We should either get |
| 4687 | // 1) An IncompatibleClassChangeError because of conflicting default method |
| 4688 | // implementations. |
| 4689 | // 2) The same default method implementation as the superclass. |
| 4690 | // 3) A default method that overrides the superclass's. |
| 4691 | // Therefore this check should never fail. |
| 4692 | CHECK(default_method != nullptr); |
| 4693 | if (UNLIKELY(default_method->GetDeclaringClass() != super_method->GetDeclaringClass())) { |
| 4694 | // TODO Refactor this add default methods to virtuals here and not in |
| 4695 | // LinkInterfaceMethods maybe. |
| 4696 | // The problem is default methods might override previously present default-method or |
| 4697 | // miranda-method vtable entries from the superclass. Unfortunately we need these to |
| 4698 | // be entries in this class's virtuals. We do not give these entries there until |
| 4699 | // LinkInterfaceMethods so we pass this map around to let it know which vtable |
| 4700 | // entries need to be updated. |
| 4701 | // Make a note that vtable entry j must be updated, store what it needs to be updated to. |
| 4702 | // We will allocate a virtual method slot in LinkInterfaceMethods and fix it up then. |
| 4703 | default_translations->insert({j, default_method}); |
| 4704 | VLOG(class_linker) << "Method " << PrettyMethod(super_method) << " overridden by default " |
| 4705 | << PrettyMethod(default_method) << " in " << PrettyClass(klass.Get()); |
| 4706 | } else { |
| 4707 | // They are the same method/no override |
| 4708 | // Cannot do direct comparison because we had to copy the ArtMethod object into the |
| 4709 | // superclass's vtable. |
| 4710 | continue; |
| 4711 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4712 | } |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4713 | } |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4714 | size_t actual_count = super_vtable_length; |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 4715 | // Add the non-overridden methods at the end. |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4716 | for (size_t i = 0; i < num_virtual_methods; ++i) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4717 | ArtMethod* local_method = klass->GetVirtualMethodDuringLinking(i, image_pointer_size_); |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4718 | size_t method_idx = local_method->GetMethodIndexDuringLinking(); |
| 4719 | if (method_idx < super_vtable_length && |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4720 | local_method == vtable->GetElementPtrSize<ArtMethod*>(method_idx, image_pointer_size_)) { |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4721 | continue; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4722 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4723 | vtable->SetElementPtrSize(actual_count, local_method, image_pointer_size_); |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 4724 | local_method->SetMethodIndex(actual_count); |
| 4725 | ++actual_count; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4726 | } |
Andreas Gampe | ab1eb0d | 2015-02-13 19:23:55 -0800 | [diff] [blame] | 4727 | if (!IsUint<16>(actual_count)) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 4728 | ThrowClassFormatError(klass.Get(), "Too many methods defined on class: %zd", actual_count); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4729 | return false; |
| 4730 | } |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 4731 | // Shrink vtable if possible |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4732 | CHECK_LE(actual_count, max_count); |
| 4733 | if (actual_count < max_count) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4734 | vtable.Assign(down_cast<mirror::PointerArray*>(vtable->CopyOf(self, actual_count))); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 4735 | if (UNLIKELY(vtable.Get() == nullptr)) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4736 | self->AssertPendingOOMException(); |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 4737 | return false; |
| 4738 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4739 | } |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 4740 | klass->SetVTable(vtable.Get()); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4741 | } else { |
Mathieu Chartier | bfd9a43 | 2014-05-21 17:43:44 -0700 | [diff] [blame] | 4742 | CHECK_EQ(klass.Get(), GetClassRoot(kJavaLangObject)); |
Andreas Gampe | ab1eb0d | 2015-02-13 19:23:55 -0800 | [diff] [blame] | 4743 | if (!IsUint<16>(num_virtual_methods)) { |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 4744 | ThrowClassFormatError(klass.Get(), "Too many methods: %d", |
| 4745 | static_cast<int>(num_virtual_methods)); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4746 | return false; |
| 4747 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4748 | auto* vtable = AllocPointerArray(self, num_virtual_methods); |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 4749 | if (UNLIKELY(vtable == nullptr)) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4750 | self->AssertPendingOOMException(); |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 4751 | return false; |
| 4752 | } |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 4753 | for (size_t i = 0; i < num_virtual_methods; ++i) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 4754 | ArtMethod* virtual_method = klass->GetVirtualMethodDuringLinking(i, image_pointer_size_); |
| 4755 | vtable->SetElementPtrSize(i, virtual_method, image_pointer_size_); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 4756 | virtual_method->SetMethodIndex(i & 0xFFFF); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4757 | } |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 4758 | klass->SetVTable(vtable); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 4759 | } |
| 4760 | return true; |
| 4761 | } |
| 4762 | |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 4763 | // Find the default method implementation for 'interface_method' in 'klass'. Stores it into |
| 4764 | // out_default_method and returns true on success. If no default method was found stores nullptr |
| 4765 | // into out_default_method and returns true. If an error occurs (such as a default_method conflict) |
| 4766 | // it will fill the icce_message with an appropriate message for an IncompatibleClassChangeError, |
| 4767 | // which should then be thrown by the caller. |
| 4768 | bool ClassLinker::FindDefaultMethodImplementation(Thread* self, |
| 4769 | ArtMethod* target_method, |
| 4770 | Handle<mirror::Class> klass, |
| 4771 | /*out*/ArtMethod** out_default_method, |
| 4772 | /*out*/std::string* icce_message) const { |
| 4773 | DCHECK(self != nullptr); |
| 4774 | DCHECK(target_method != nullptr); |
| 4775 | DCHECK(out_default_method != nullptr); |
| 4776 | DCHECK(icce_message != nullptr); |
| 4777 | |
| 4778 | *out_default_method = nullptr; |
| 4779 | mirror::Class* chosen_iface = nullptr; |
| 4780 | |
| 4781 | // We organize the interface table so that, for interface I any subinterfaces J follow it in the |
| 4782 | // table. This lets us walk the table backwards when searching for default methods. The first one |
| 4783 | // we encounter is the best candidate since it is the most specific. Once we have found it we keep |
| 4784 | // track of it and then continue checking all other interfaces, since we need to throw an error if |
| 4785 | // we encounter conflicting default method implementations (one is not a subtype of the other). |
| 4786 | // |
| 4787 | // The order of unrelated interfaces does not matter and is not defined. |
| 4788 | size_t iftable_count = klass->GetIfTableCount(); |
| 4789 | if (iftable_count == 0) { |
| 4790 | // No interfaces. We have already reset out to null so just return true. |
| 4791 | return true; |
| 4792 | } |
| 4793 | |
| 4794 | StackHandleScope<1> hs(self); |
| 4795 | MutableHandle<mirror::IfTable> iftable(hs.NewHandle(klass->GetIfTable())); |
| 4796 | MethodNameAndSignatureComparator target_name_comparator( |
| 4797 | target_method->GetInterfaceMethodIfProxy(image_pointer_size_)); |
| 4798 | // Iterates over the klass's iftable in reverse |
| 4799 | // We have a break at the end because size_t is unsigned. |
| 4800 | for (size_t k = iftable_count - 1; /* break if k == 0 at end */; --k) { |
| 4801 | DCHECK_LT(k, iftable->Count()); |
| 4802 | mirror::Class* iface = iftable->GetInterface(k); |
| 4803 | size_t num_instance_methods = iface->NumVirtualMethods(); |
| 4804 | // Iterate through every method on this interface. The order does not matter so we go forwards. |
| 4805 | for (size_t m = 0; m < num_instance_methods; m++) { |
| 4806 | ArtMethod* current_method = iface->GetVirtualMethodUnchecked(m, image_pointer_size_); |
| 4807 | // Skip abstract methods and methods with different names. |
| 4808 | if (current_method->IsAbstract() || |
| 4809 | !target_name_comparator.HasSameNameAndSignature( |
| 4810 | current_method->GetInterfaceMethodIfProxy(image_pointer_size_))) { |
| 4811 | continue; |
| 4812 | } |
| 4813 | // The verifier should have caught the non-public method. |
| 4814 | DCHECK(current_method->IsPublic()) << "Interface method is not public!"; |
| 4815 | if (UNLIKELY(chosen_iface != nullptr)) { |
| 4816 | // We have multiple default impls of the same method. We need to check they do not |
| 4817 | // conflict and throw an error if they do. Conflicting means that the current iface is not |
| 4818 | // masked by the chosen interface. |
| 4819 | if (!iface->IsAssignableFrom(chosen_iface)) { |
| 4820 | *icce_message = StringPrintf("Conflicting default method implementations: '%s' and '%s'", |
| 4821 | PrettyMethod(current_method).c_str(), |
| 4822 | PrettyMethod(*out_default_method).c_str()); |
| 4823 | return false; |
| 4824 | } else { |
| 4825 | break; // Continue checking at the next interface. |
| 4826 | } |
| 4827 | } else { |
| 4828 | *out_default_method = current_method; |
| 4829 | chosen_iface = iface; |
| 4830 | // We should now finish traversing the graph to find if we have default methods that |
| 4831 | // conflict. |
| 4832 | break; |
| 4833 | } |
| 4834 | } |
| 4835 | if (k == 0) { |
| 4836 | break; |
| 4837 | } |
| 4838 | } |
| 4839 | return true; |
| 4840 | } |
| 4841 | |
| 4842 | // Sets imt_ref appropriately for LinkInterfaceMethods. |
| 4843 | // If there is no method in the imt location of imt_ref it will store the given method there. |
| 4844 | // Otherwise it will set the conflict method which will figure out which method to use during |
| 4845 | // runtime. |
| 4846 | static void SetIMTRef(ArtMethod* unimplemented_method, |
| 4847 | ArtMethod* conflict_method, |
| 4848 | size_t image_pointer_size, |
| 4849 | ArtMethod* current_method, |
| 4850 | /*out*/ArtMethod** imt_ref) |
| 4851 | SHARED_REQUIRES(Locks::mutator_lock_) { |
| 4852 | // Place method in imt if entry is empty, place conflict otherwise. |
| 4853 | if (*imt_ref == unimplemented_method) { |
| 4854 | *imt_ref = current_method; |
| 4855 | } else if (*imt_ref != conflict_method) { |
| 4856 | // If we are not a conflict and we have the same signature and name as the imt |
| 4857 | // entry, it must be that we overwrote a superclass vtable entry. |
| 4858 | MethodNameAndSignatureComparator imt_comparator( |
| 4859 | (*imt_ref)->GetInterfaceMethodIfProxy(image_pointer_size)); |
| 4860 | if (imt_comparator.HasSameNameAndSignature( |
| 4861 | current_method->GetInterfaceMethodIfProxy(image_pointer_size))) { |
| 4862 | *imt_ref = current_method; |
| 4863 | } else { |
| 4864 | *imt_ref = conflict_method; |
| 4865 | } |
| 4866 | } |
| 4867 | } |
| 4868 | |
| 4869 | // Simple helper function that checks that no subtypes of 'val' are contained within the 'classes' |
| 4870 | // set. |
| 4871 | static bool NotSubinterfaceOfAny(const std::unordered_set<mirror::Class*>& classes, |
| 4872 | mirror::Class* val) |
| 4873 | REQUIRES(Roles::uninterruptible_) |
| 4874 | SHARED_REQUIRES(Locks::mutator_lock_) { |
| 4875 | DCHECK(val != nullptr); |
| 4876 | for (auto c : classes) { |
| 4877 | if (val->IsAssignableFrom(&*c)) { |
| 4878 | return false; |
| 4879 | } |
| 4880 | } |
| 4881 | return true; |
| 4882 | } |
| 4883 | |
| 4884 | // Fills in and flattens the interface inheritance hierarchy. |
| 4885 | // |
| 4886 | // By the end of this function all interfaces in the transitive closure of to_process are added to |
| 4887 | // the iftable and every interface precedes all of its sub-interfaces in this list. |
| 4888 | // |
| 4889 | // all I, J: Interface | I <: J implies J precedes I |
| 4890 | // |
| 4891 | // (note A <: B means that A is a subtype of B) |
| 4892 | // |
| 4893 | // This returns the total number of items in the iftable. The iftable might be resized down after |
| 4894 | // this call. |
| 4895 | // |
| 4896 | // We order this backwards so that we do not need to reorder superclass interfaces when new |
| 4897 | // interfaces are added in subclass's interface tables. |
| 4898 | // |
| 4899 | // Upon entry into this function iftable is a copy of the superclass's iftable with the first |
| 4900 | // super_ifcount entries filled in with the transitive closure of the interfaces of the superclass. |
| 4901 | // The other entries are uninitialized. We will fill in the remaining entries in this function. The |
| 4902 | // iftable must be large enough to hold all interfaces without changing its size. |
| 4903 | static size_t FillIfTable(mirror::IfTable* iftable, |
| 4904 | size_t super_ifcount, |
| 4905 | std::vector<mirror::Class*> to_process) |
| 4906 | REQUIRES(Roles::uninterruptible_) |
| 4907 | SHARED_REQUIRES(Locks::mutator_lock_) { |
| 4908 | // This is the set of all class's already in the iftable. Used to make checking if a class has |
| 4909 | // already been added quicker. |
| 4910 | std::unordered_set<mirror::Class*> classes_in_iftable; |
| 4911 | // The first super_ifcount elements are from the superclass. We note that they are already added. |
| 4912 | for (size_t i = 0; i < super_ifcount; i++) { |
| 4913 | mirror::Class* iface = iftable->GetInterface(i); |
| 4914 | DCHECK(NotSubinterfaceOfAny(classes_in_iftable, iface)) << "Bad ordering."; |
| 4915 | classes_in_iftable.insert(iface); |
| 4916 | } |
| 4917 | size_t filled_ifcount = super_ifcount; |
| 4918 | for (mirror::Class* interface : to_process) { |
| 4919 | // Let us call the first filled_ifcount elements of iftable the current-iface-list. |
| 4920 | // At this point in the loop current-iface-list has the invariant that: |
| 4921 | // for every pair of interfaces I,J within it: |
| 4922 | // if index_of(I) < index_of(J) then I is not a subtype of J |
| 4923 | |
| 4924 | // If we have already seen this element then all of its super-interfaces must already be in the |
| 4925 | // current-iface-list so we can skip adding it. |
| 4926 | if (!ContainsElement(classes_in_iftable, interface)) { |
| 4927 | // We haven't seen this interface so add all of its super-interfaces onto the |
| 4928 | // current-iface-list, skipping those already on it. |
| 4929 | int32_t ifcount = interface->GetIfTableCount(); |
| 4930 | for (int32_t j = 0; j < ifcount; j++) { |
| 4931 | mirror::Class* super_interface = interface->GetIfTable()->GetInterface(j); |
| 4932 | if (!ContainsElement(classes_in_iftable, super_interface)) { |
| 4933 | DCHECK(NotSubinterfaceOfAny(classes_in_iftable, super_interface)) << "Bad ordering."; |
| 4934 | classes_in_iftable.insert(super_interface); |
| 4935 | iftable->SetInterface(filled_ifcount, super_interface); |
| 4936 | filled_ifcount++; |
| 4937 | } |
| 4938 | } |
| 4939 | DCHECK(NotSubinterfaceOfAny(classes_in_iftable, interface)) << "Bad ordering"; |
| 4940 | // Place this interface onto the current-iface-list after all of its super-interfaces. |
| 4941 | classes_in_iftable.insert(interface); |
| 4942 | iftable->SetInterface(filled_ifcount, interface); |
| 4943 | filled_ifcount++; |
| 4944 | } else if (kIsDebugBuild) { |
| 4945 | // Check all super-interfaces are already in the list. |
| 4946 | int32_t ifcount = interface->GetIfTableCount(); |
| 4947 | for (int32_t j = 0; j < ifcount; j++) { |
| 4948 | mirror::Class* super_interface = interface->GetIfTable()->GetInterface(j); |
| 4949 | DCHECK(ContainsElement(classes_in_iftable, super_interface)) |
| 4950 | << "Iftable does not contain " << PrettyClass(super_interface) |
| 4951 | << ", a superinterface of " << PrettyClass(interface); |
| 4952 | } |
| 4953 | } |
| 4954 | } |
| 4955 | if (kIsDebugBuild) { |
| 4956 | // Check that the iftable is ordered correctly. |
| 4957 | for (size_t i = 0; i < filled_ifcount; i++) { |
| 4958 | mirror::Class* if_a = iftable->GetInterface(i); |
| 4959 | for (size_t j = i + 1; j < filled_ifcount; j++) { |
| 4960 | mirror::Class* if_b = iftable->GetInterface(j); |
| 4961 | // !(if_a <: if_b) |
| 4962 | CHECK(!if_b->IsAssignableFrom(if_a)) |
| 4963 | << "Bad interface order: " << PrettyClass(if_a) << " (index " << i << ") extends " |
| 4964 | << PrettyClass(if_b) << " (index " << j << ") and so should be after it in the " |
| 4965 | << "interface list."; |
| 4966 | } |
| 4967 | } |
| 4968 | } |
| 4969 | return filled_ifcount; |
| 4970 | } |
| 4971 | |
| 4972 | bool ClassLinker::SetupInterfaceLookupTable(Thread* self, Handle<mirror::Class> klass, |
| 4973 | Handle<mirror::ObjectArray<mirror::Class>> interfaces) { |
| 4974 | StackHandleScope<1> hs(self); |
| 4975 | const size_t super_ifcount = |
| 4976 | klass->HasSuperClass() ? klass->GetSuperClass()->GetIfTableCount() : 0U; |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 4977 | const bool have_interfaces = interfaces.Get() != nullptr; |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 4978 | const size_t num_interfaces = |
| 4979 | have_interfaces ? interfaces->GetLength() : klass->NumDirectInterfaces(); |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 4980 | if (num_interfaces == 0) { |
| 4981 | if (super_ifcount == 0) { |
| 4982 | // Class implements no interfaces. |
| 4983 | DCHECK_EQ(klass->GetIfTableCount(), 0); |
| 4984 | DCHECK(klass->GetIfTable() == nullptr); |
| 4985 | return true; |
| 4986 | } |
Ian Rogers | 9bc8191 | 2012-10-11 21:43:36 -0700 | [diff] [blame] | 4987 | // Class implements same interfaces as parent, are any of these not marker interfaces? |
| 4988 | bool has_non_marker_interface = false; |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 4989 | mirror::IfTable* super_iftable = klass->GetSuperClass()->GetIfTable(); |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 4990 | for (size_t i = 0; i < super_ifcount; ++i) { |
Ian Rogers | 9bc8191 | 2012-10-11 21:43:36 -0700 | [diff] [blame] | 4991 | if (super_iftable->GetMethodArrayCount(i) > 0) { |
| 4992 | has_non_marker_interface = true; |
| 4993 | break; |
| 4994 | } |
| 4995 | } |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 4996 | // Class just inherits marker interfaces from parent so recycle parent's iftable. |
Ian Rogers | 9bc8191 | 2012-10-11 21:43:36 -0700 | [diff] [blame] | 4997 | if (!has_non_marker_interface) { |
Ian Rogers | 9bc8191 | 2012-10-11 21:43:36 -0700 | [diff] [blame] | 4998 | klass->SetIfTable(super_iftable); |
| 4999 | return true; |
| 5000 | } |
| 5001 | } |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5002 | size_t ifcount = super_ifcount + num_interfaces; |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5003 | // Check that every class being implemented is an interface. |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5004 | for (size_t i = 0; i < num_interfaces; i++) { |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 5005 | mirror::Class* interface = have_interfaces |
| 5006 | ? interfaces->GetWithoutChecks(i) |
| 5007 | : mirror::Class::GetDirectInterface(self, klass, i); |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5008 | DCHECK(interface != nullptr); |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5009 | if (UNLIKELY(!interface->IsInterface())) { |
| 5010 | std::string temp; |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 5011 | ThrowIncompatibleClassChangeError(klass.Get(), |
| 5012 | "Class %s implements non-interface class %s", |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5013 | PrettyDescriptor(klass.Get()).c_str(), |
| 5014 | PrettyDescriptor(interface->GetDescriptor(&temp)).c_str()); |
| 5015 | return false; |
| 5016 | } |
| 5017 | ifcount += interface->GetIfTableCount(); |
| 5018 | } |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5019 | // Create the interface function table. |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 5020 | MutableHandle<mirror::IfTable> iftable(hs.NewHandle(AllocIfTable(self, ifcount))); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 5021 | if (UNLIKELY(iftable.Get() == nullptr)) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5022 | self->AssertPendingOOMException(); |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 5023 | return false; |
| 5024 | } |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5025 | // Fill in table with superclass's iftable. |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 5026 | if (super_ifcount != 0) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 5027 | mirror::IfTable* super_iftable = klass->GetSuperClass()->GetIfTable(); |
Brian Carlstrom | 4b620ff | 2011-09-11 01:11:01 -0700 | [diff] [blame] | 5028 | for (size_t i = 0; i < super_ifcount; i++) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 5029 | mirror::Class* super_interface = super_iftable->GetInterface(i); |
Ian Rogers | 9bc8191 | 2012-10-11 21:43:36 -0700 | [diff] [blame] | 5030 | iftable->SetInterface(i, super_interface); |
Brian Carlstrom | 4b620ff | 2011-09-11 01:11:01 -0700 | [diff] [blame] | 5031 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 5032 | } |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5033 | |
| 5034 | // Note that AllowThreadSuspension is to thread suspension as pthread_testcancel is to pthread |
| 5035 | // cancellation. That is it will suspend if one has a pending suspend request but otherwise |
| 5036 | // doesn't really do anything. |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 5037 | self->AllowThreadSuspension(); |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5038 | |
| 5039 | size_t new_ifcount; |
| 5040 | { |
| 5041 | ScopedAssertNoThreadSuspension nts(self, "Copying mirror::Class*'s for FillIfTable"); |
| 5042 | std::vector<mirror::Class*> to_add; |
| 5043 | for (size_t i = 0; i < num_interfaces; i++) { |
| 5044 | mirror::Class* interface = have_interfaces ? interfaces->Get(i) : |
| 5045 | mirror::Class::GetDirectInterface(self, klass, i); |
| 5046 | to_add.push_back(interface); |
Ian Rogers | b52b01a | 2012-01-12 17:01:38 -0800 | [diff] [blame] | 5047 | } |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5048 | |
| 5049 | new_ifcount = FillIfTable(iftable.Get(), super_ifcount, std::move(to_add)); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 5050 | } |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5051 | |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 5052 | self->AllowThreadSuspension(); |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5053 | |
Ian Rogers | b52b01a | 2012-01-12 17:01:38 -0800 | [diff] [blame] | 5054 | // Shrink iftable in case duplicates were found |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5055 | if (new_ifcount < ifcount) { |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5056 | DCHECK_NE(num_interfaces, 0U); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5057 | iftable.Assign(down_cast<mirror::IfTable*>( |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5058 | iftable->CopyOf(self, new_ifcount * mirror::IfTable::kMax))); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 5059 | if (UNLIKELY(iftable.Get() == nullptr)) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5060 | self->AssertPendingOOMException(); |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 5061 | return false; |
| 5062 | } |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5063 | ifcount = new_ifcount; |
Ian Rogers | b52b01a | 2012-01-12 17:01:38 -0800 | [diff] [blame] | 5064 | } else { |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5065 | DCHECK_EQ(new_ifcount, ifcount); |
Ian Rogers | b52b01a | 2012-01-12 17:01:38 -0800 | [diff] [blame] | 5066 | } |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 5067 | klass->SetIfTable(iftable.Get()); |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5068 | return true; |
| 5069 | } |
| 5070 | |
| 5071 | bool ClassLinker::LinkInterfaceMethods( |
| 5072 | Thread* self, |
| 5073 | Handle<mirror::Class> klass, |
| 5074 | const std::unordered_map<size_t, ArtMethod*>& default_translations, |
| 5075 | ArtMethod** out_imt) { |
| 5076 | StackHandleScope<3> hs(self); |
| 5077 | Runtime* const runtime = Runtime::Current(); |
| 5078 | const bool has_superclass = klass->HasSuperClass(); |
| 5079 | const size_t super_ifcount = has_superclass ? klass->GetSuperClass()->GetIfTableCount() : 0U; |
| 5080 | const size_t method_alignment = ArtMethod::Alignment(image_pointer_size_); |
| 5081 | const size_t method_size = ArtMethod::Size(image_pointer_size_); |
| 5082 | const size_t ifcount = klass->GetIfTableCount(); |
| 5083 | |
| 5084 | MutableHandle<mirror::IfTable> iftable(hs.NewHandle(klass->GetIfTable())); |
| 5085 | |
Elliott Hughes | 4681c80 | 2011-09-25 18:04:37 -0700 | [diff] [blame] | 5086 | // If we're an interface, we don't need the vtable pointers, so we're done. |
Ian Rogers | 9bc8191 | 2012-10-11 21:43:36 -0700 | [diff] [blame] | 5087 | if (klass->IsInterface()) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 5088 | return true; |
| 5089 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5090 | // These are allocated on the heap to begin, we then transfer to linear alloc when we re-create |
| 5091 | // the virtual methods array. |
| 5092 | // Need to use low 4GB arenas for compiler or else the pointers wont fit in 32 bit method array |
| 5093 | // during cross compilation. |
| 5094 | // Use the linear alloc pool since this one is in the low 4gb for the compiler. |
| 5095 | ArenaStack stack(runtime->GetLinearAlloc()->GetArenaPool()); |
| 5096 | ScopedArenaAllocator allocator(&stack); |
| 5097 | ScopedArenaVector<ArtMethod*> miranda_methods(allocator.Adapter()); |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5098 | ScopedArenaVector<ArtMethod*> default_methods(allocator.Adapter()); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5099 | |
| 5100 | MutableHandle<mirror::PointerArray> vtable(hs.NewHandle(klass->GetVTableDuringLinking())); |
| 5101 | ArtMethod* const unimplemented_method = runtime->GetImtUnimplementedMethod(); |
| 5102 | ArtMethod* const conflict_method = runtime->GetImtConflictMethod(); |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5103 | // Copy the IMT from the super class if possible. |
| 5104 | bool extend_super_iftable = false; |
| 5105 | if (has_superclass) { |
| 5106 | mirror::Class* super_class = klass->GetSuperClass(); |
| 5107 | extend_super_iftable = true; |
| 5108 | if (super_class->ShouldHaveEmbeddedImtAndVTable()) { |
| 5109 | for (size_t i = 0; i < mirror::Class::kImtSize; ++i) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5110 | out_imt[i] = super_class->GetEmbeddedImTableEntry(i, image_pointer_size_); |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5111 | } |
| 5112 | } else { |
| 5113 | // No imt in the super class, need to reconstruct from the iftable. |
| 5114 | mirror::IfTable* if_table = super_class->GetIfTable(); |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5115 | const size_t length = super_class->GetIfTableCount(); |
| 5116 | for (size_t i = 0; i < length; ++i) { |
| 5117 | mirror::Class* interface = iftable->GetInterface(i); |
| 5118 | const size_t num_virtuals = interface->NumVirtualMethods(); |
| 5119 | const size_t method_array_count = if_table->GetMethodArrayCount(i); |
| 5120 | DCHECK_EQ(num_virtuals, method_array_count); |
| 5121 | if (method_array_count == 0) { |
| 5122 | continue; |
| 5123 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5124 | auto* method_array = if_table->GetMethodArray(i); |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5125 | for (size_t j = 0; j < num_virtuals; ++j) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5126 | auto method = method_array->GetElementPtrSize<ArtMethod*>(j, image_pointer_size_); |
| 5127 | DCHECK(method != nullptr) << PrettyClass(super_class); |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5128 | // Miranda methods cannot be used to implement an interface method and defaults should be |
| 5129 | // skipped in case we override it. |
| 5130 | if (method->IsDefault() || method->IsMiranda()) { |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5131 | continue; |
| 5132 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5133 | ArtMethod* interface_method = interface->GetVirtualMethod(j, image_pointer_size_); |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5134 | uint32_t imt_index = interface_method->GetDexMethodIndex() % mirror::Class::kImtSize; |
Mathieu Chartier | cf3b1a3 | 2015-06-01 14:30:06 -0700 | [diff] [blame] | 5135 | auto** imt_ref = &out_imt[imt_index]; |
| 5136 | if (*imt_ref == unimplemented_method) { |
| 5137 | *imt_ref = method; |
| 5138 | } else if (*imt_ref != conflict_method) { |
| 5139 | *imt_ref = conflict_method; |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5140 | } |
| 5141 | } |
| 5142 | } |
| 5143 | } |
| 5144 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5145 | // Allocate method arrays before since we don't want miss visiting miranda method roots due to |
| 5146 | // thread suspension. |
Brian Carlstrom | 4b620ff | 2011-09-11 01:11:01 -0700 | [diff] [blame] | 5147 | for (size_t i = 0; i < ifcount; ++i) { |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 5148 | size_t num_methods = iftable->GetInterface(i)->NumVirtualMethods(); |
Ian Rogers | 9bc8191 | 2012-10-11 21:43:36 -0700 | [diff] [blame] | 5149 | if (num_methods > 0) { |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5150 | const bool is_super = i < super_ifcount; |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5151 | // This is an interface implemented by a super-class. Therefore we can just copy the method |
| 5152 | // array from the superclass. |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5153 | const bool super_interface = is_super && extend_super_iftable; |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5154 | mirror::PointerArray* method_array; |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5155 | if (super_interface) { |
| 5156 | mirror::IfTable* if_table = klass->GetSuperClass()->GetIfTable(); |
| 5157 | DCHECK(if_table != nullptr); |
| 5158 | DCHECK(if_table->GetMethodArray(i) != nullptr); |
| 5159 | // If we are working on a super interface, try extending the existing method array. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5160 | method_array = down_cast<mirror::PointerArray*>(if_table->GetMethodArray(i)->Clone(self)); |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5161 | } else { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5162 | method_array = AllocPointerArray(self, num_methods); |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5163 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5164 | if (UNLIKELY(method_array == nullptr)) { |
| 5165 | self->AssertPendingOOMException(); |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 5166 | return false; |
| 5167 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5168 | iftable->SetMethodArray(i, method_array); |
| 5169 | } |
| 5170 | } |
| 5171 | |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 5172 | auto* old_cause = self->StartAssertNoThreadSuspension( |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5173 | "Copying ArtMethods for LinkInterfaceMethods"); |
| 5174 | for (size_t i = 0; i < ifcount; ++i) { |
| 5175 | size_t num_methods = iftable->GetInterface(i)->NumVirtualMethods(); |
| 5176 | if (num_methods > 0) { |
| 5177 | StackHandleScope<2> hs2(self); |
| 5178 | const bool is_super = i < super_ifcount; |
| 5179 | const bool super_interface = is_super && extend_super_iftable; |
| 5180 | auto method_array(hs2.NewHandle(iftable->GetMethodArray(i))); |
| 5181 | |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 5182 | LengthPrefixedArray<ArtMethod>* input_virtual_methods = nullptr; |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5183 | Handle<mirror::PointerArray> input_vtable_array = NullHandle<mirror::PointerArray>(); |
| 5184 | int32_t input_array_length = 0; |
| 5185 | if (super_interface) { |
| 5186 | // We are overwriting a super class interface, try to only virtual methods instead of the |
| 5187 | // whole vtable. |
| 5188 | input_virtual_methods = klass->GetVirtualMethodsPtr(); |
| 5189 | input_array_length = klass->NumVirtualMethods(); |
| 5190 | } else { |
| 5191 | // A new interface, we need the whole vtable in case a new interface method is implemented |
| 5192 | // in the whole superclass. |
| 5193 | input_vtable_array = vtable; |
| 5194 | input_array_length = input_vtable_array->GetLength(); |
| 5195 | } |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5196 | // For each method in interface |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 5197 | for (size_t j = 0; j < num_methods; ++j) { |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 5198 | auto* interface_method = iftable->GetInterface(i)->GetVirtualMethod(j, image_pointer_size_); |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 5199 | MethodNameAndSignatureComparator interface_name_comparator( |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5200 | interface_method->GetInterfaceMethodIfProxy(image_pointer_size_)); |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5201 | uint32_t imt_index = interface_method->GetDexMethodIndex() % mirror::Class::kImtSize; |
| 5202 | ArtMethod** imt_ptr = &out_imt[imt_index]; |
Ian Rogers | 9bc8191 | 2012-10-11 21:43:36 -0700 | [diff] [blame] | 5203 | // For each method listed in the interface's method list, find the |
| 5204 | // matching method in our class's method list. We want to favor the |
| 5205 | // subclass over the superclass, which just requires walking |
| 5206 | // back from the end of the vtable. (This only matters if the |
| 5207 | // superclass defines a private method and this class redefines |
| 5208 | // it -- otherwise it would use the same vtable slot. In .dex files |
| 5209 | // those don't end up in the virtual method table, so it shouldn't |
| 5210 | // matter which direction we go. We walk it backward anyway.) |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5211 | // |
| 5212 | // To find defaults we need to do the same but also go over interfaces. |
| 5213 | bool found_impl = false; |
| 5214 | ArtMethod* default_impl = nullptr; |
| 5215 | bool found_default_impl = false; |
| 5216 | for (int32_t k = input_array_length - 1; k >= 0; --k) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5217 | ArtMethod* vtable_method = input_virtual_methods != nullptr ? |
Vladimir Marko | cf36d49 | 2015-08-12 19:27:26 +0100 | [diff] [blame] | 5218 | &input_virtual_methods->At(k, method_size, method_alignment) : |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5219 | input_vtable_array->GetElementPtrSize<ArtMethod*>(k, image_pointer_size_); |
| 5220 | ArtMethod* vtable_method_for_name_comparison = |
| 5221 | vtable_method->GetInterfaceMethodIfProxy(image_pointer_size_); |
Ian Rogers | 03b6eaf | 2014-10-28 09:34:57 -0700 | [diff] [blame] | 5222 | if (interface_name_comparator.HasSameNameAndSignature( |
Mathieu Chartier | 9f3629d | 2014-10-28 18:23:02 -0700 | [diff] [blame] | 5223 | vtable_method_for_name_comparison)) { |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5224 | if (!vtable_method->IsAbstract() && !vtable_method->IsPublic()) { |
Mathieu Chartier | 4d122c1 | 2015-06-17 14:14:36 -0700 | [diff] [blame] | 5225 | // Must do EndAssertNoThreadSuspension before throw since the throw can cause |
| 5226 | // allocations. |
| 5227 | self->EndAssertNoThreadSuspension(old_cause); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5228 | ThrowIllegalAccessError(klass.Get(), |
Brian Carlstrom | f363283 | 2014-05-20 15:36:53 -0700 | [diff] [blame] | 5229 | "Method '%s' implementing interface method '%s' is not public", |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5230 | PrettyMethod(vtable_method).c_str(), PrettyMethod(interface_method).c_str()); |
Ian Rogers | 9bc8191 | 2012-10-11 21:43:36 -0700 | [diff] [blame] | 5231 | return false; |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5232 | } else if (vtable_method->IsDefault()) { |
| 5233 | // We might have a newer, better, default method for this, so we just skip it. If we |
| 5234 | // are still using this we will select it again when scanning for default methods. To |
| 5235 | // obviate the need to copy the method again we will make a note that we already found |
| 5236 | // a default here. |
| 5237 | // TODO This should be much cleaner. |
| 5238 | found_default_impl = true; |
| 5239 | default_impl = vtable_method; |
| 5240 | break; |
| 5241 | } else { |
| 5242 | found_impl = true; |
Ian Rogers | 9bc8191 | 2012-10-11 21:43:36 -0700 | [diff] [blame] | 5243 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5244 | method_array->SetElementPtrSize(j, vtable_method, image_pointer_size_); |
Jeff Hao | 88474b4 | 2013-10-23 16:24:40 -0700 | [diff] [blame] | 5245 | // Place method in imt if entry is empty, place conflict otherwise. |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5246 | SetIMTRef(unimplemented_method, |
| 5247 | conflict_method, |
| 5248 | image_pointer_size_, |
| 5249 | vtable_method, |
| 5250 | /*out*/imt_ptr); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 5251 | break; |
| 5252 | } |
| 5253 | } |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5254 | // We should only search for default implementations when the class does not implement the |
| 5255 | // method directly and either (1) the interface is newly implemented on this class and not |
| 5256 | // on any of its superclasses, (2) the superclass's implementation is a default method, or |
| 5257 | // (3) the superclass does not have an implementation. |
| 5258 | if (!found_impl && (!super_interface || |
| 5259 | method_array->GetElementPtrSize<ArtMethod*>(j, image_pointer_size_) |
| 5260 | ->IsOverridableByDefaultMethod())) { |
| 5261 | ArtMethod* current_method = nullptr; |
| 5262 | std::string icce_message; |
| 5263 | if (!FindDefaultMethodImplementation(self, |
| 5264 | interface_method, |
| 5265 | klass, |
| 5266 | /*out*/¤t_method, |
| 5267 | /*out*/&icce_message)) { |
| 5268 | // There was a conflict with default method implementations. |
| 5269 | self->EndAssertNoThreadSuspension(old_cause); |
| 5270 | // TODO This should actually be thrown when we attempt to invoke this method. |
| 5271 | ThrowIncompatibleClassChangeError(klass.Get(), "%s", icce_message.c_str()); |
| 5272 | return false; |
| 5273 | } else if (current_method != nullptr) { |
| 5274 | if (found_default_impl && |
| 5275 | current_method->GetDeclaringClass() == default_impl->GetDeclaringClass()) { |
| 5276 | // We found a default method but it was the same one we already have from our |
| 5277 | // superclass. Don't bother adding it to our vtable again. |
| 5278 | current_method = default_impl; |
| 5279 | } else { |
| 5280 | // We found a default method implementation and there were no conflicts. |
| 5281 | // Save the default method. We need to add it to the vtable. |
| 5282 | default_methods.push_back(current_method); |
| 5283 | } |
| 5284 | method_array->SetElementPtrSize(j, current_method, image_pointer_size_); |
| 5285 | SetIMTRef(unimplemented_method, |
| 5286 | conflict_method, |
| 5287 | image_pointer_size_, |
| 5288 | current_method, |
| 5289 | /*out*/imt_ptr); |
| 5290 | found_impl = true; |
| 5291 | } |
| 5292 | } |
| 5293 | if (!found_impl && !super_interface) { |
| 5294 | // It is defined in this class or any of its subclasses. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5295 | ArtMethod* miranda_method = nullptr; |
| 5296 | for (auto& mir_method : miranda_methods) { |
Ian Rogers | 03b6eaf | 2014-10-28 09:34:57 -0700 | [diff] [blame] | 5297 | if (interface_name_comparator.HasSameNameAndSignature(mir_method)) { |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5298 | miranda_method = mir_method; |
Ian Rogers | 9bc8191 | 2012-10-11 21:43:36 -0700 | [diff] [blame] | 5299 | break; |
| 5300 | } |
| 5301 | } |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5302 | if (miranda_method == nullptr) { |
Mathieu Chartier | d4d83b8 | 2015-06-19 20:24:45 -0700 | [diff] [blame] | 5303 | miranda_method = reinterpret_cast<ArtMethod*>(allocator.Alloc(method_size)); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5304 | CHECK(miranda_method != nullptr); |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 5305 | // Point the interface table at a phantom slot. |
Nicolas Geoffray | 22cf3d3 | 2015-11-02 11:57:11 +0000 | [diff] [blame] | 5306 | new(miranda_method) ArtMethod(interface_method, image_pointer_size_); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5307 | miranda_methods.push_back(miranda_method); |
Ian Rogers | 9bc8191 | 2012-10-11 21:43:36 -0700 | [diff] [blame] | 5308 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5309 | method_array->SetElementPtrSize(j, miranda_method, image_pointer_size_); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 5310 | } |
| 5311 | } |
| 5312 | } |
| 5313 | } |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5314 | if (!miranda_methods.empty() || !default_methods.empty()) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5315 | const size_t old_method_count = klass->NumVirtualMethods(); |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5316 | const size_t new_method_count = |
| 5317 | old_method_count + miranda_methods.size() + default_methods.size(); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5318 | // Attempt to realloc to save RAM if possible. |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 5319 | LengthPrefixedArray<ArtMethod>* old_virtuals = klass->GetVirtualMethodsPtr(); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5320 | // The Realloced virtual methods aren't visiblef from the class roots, so there is no issue |
| 5321 | // where GCs could attempt to mark stale pointers due to memcpy. And since we overwrite the |
| 5322 | // realloced memory with out->CopyFrom, we are guaranteed to have objects in the to space since |
| 5323 | // CopyFrom has internal read barriers. |
Vladimir Marko | cf36d49 | 2015-08-12 19:27:26 +0100 | [diff] [blame] | 5324 | const size_t old_size = old_virtuals != nullptr |
| 5325 | ? LengthPrefixedArray<ArtMethod>::ComputeSize(old_method_count, |
| 5326 | method_size, |
| 5327 | method_alignment) |
| 5328 | : 0u; |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 5329 | const size_t new_size = LengthPrefixedArray<ArtMethod>::ComputeSize(new_method_count, |
Vladimir Marko | cf36d49 | 2015-08-12 19:27:26 +0100 | [diff] [blame] | 5330 | method_size, |
| 5331 | method_alignment); |
Mathieu Chartier | c0fe56a | 2015-08-11 13:01:23 -0700 | [diff] [blame] | 5332 | auto* virtuals = reinterpret_cast<LengthPrefixedArray<ArtMethod>*>( |
| 5333 | runtime->GetLinearAlloc()->Realloc(self, old_virtuals, old_size, new_size)); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 5334 | if (UNLIKELY(virtuals == nullptr)) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5335 | self->AssertPendingOOMException(); |
Mathieu Chartier | 4e2cb09 | 2015-07-22 16:17:51 -0700 | [diff] [blame] | 5336 | self->EndAssertNoThreadSuspension(old_cause); |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 5337 | return false; |
| 5338 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5339 | ScopedArenaUnorderedMap<ArtMethod*, ArtMethod*> move_table(allocator.Adapter()); |
| 5340 | if (virtuals != old_virtuals) { |
| 5341 | // Maps from heap allocated miranda method to linear alloc miranda method. |
Vladimir Marko | 35831e8 | 2015-09-11 11:59:18 +0100 | [diff] [blame] | 5342 | StrideIterator<ArtMethod> out = virtuals->begin(method_size, method_alignment); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5343 | // Copy over the old methods + miranda methods. |
| 5344 | for (auto& m : klass->GetVirtualMethods(image_pointer_size_)) { |
| 5345 | move_table.emplace(&m, &*out); |
| 5346 | // The CopyFrom is only necessary to not miss read barriers since Realloc won't do read |
| 5347 | // barriers when it copies. |
| 5348 | out->CopyFrom(&m, image_pointer_size_); |
| 5349 | ++out; |
| 5350 | } |
| 5351 | } |
Vladimir Marko | 35831e8 | 2015-09-11 11:59:18 +0100 | [diff] [blame] | 5352 | StrideIterator<ArtMethod> out(virtuals->begin(method_size, method_alignment) |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5353 | + old_method_count); |
Mathieu Chartier | d4d83b8 | 2015-06-19 20:24:45 -0700 | [diff] [blame] | 5354 | // Copy over miranda methods before copying vtable since CopyOf may cause thread suspension and |
| 5355 | // we want the roots of the miranda methods to get visited. |
| 5356 | for (ArtMethod* mir_method : miranda_methods) { |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5357 | ArtMethod& new_method = *out; |
| 5358 | new_method.CopyFrom(mir_method, image_pointer_size_); |
| 5359 | new_method.SetAccessFlags(new_method.GetAccessFlags() | kAccMiranda); |
| 5360 | DCHECK_NE(new_method.GetAccessFlags() & kAccAbstract, 0u) |
| 5361 | << "Miranda method should be abstract!"; |
| 5362 | move_table.emplace(mir_method, &new_method); |
| 5363 | ++out; |
| 5364 | } |
| 5365 | // We need to copy the default methods into our own virtual method table since the runtime |
| 5366 | // requires that every method on a class's vtable be in that respective class's virtual method |
| 5367 | // table. |
| 5368 | // NOTE This means that two classes might have the same implementation of a method from the same |
| 5369 | // interface but will have different ArtMethod*s for them. This also means we cannot compare a |
| 5370 | // default method found on a class with one found on the declaring interface directly and must |
| 5371 | // look at the declaring class to determine if they are the same. |
| 5372 | for (ArtMethod* def_method : default_methods) { |
| 5373 | ArtMethod& new_method = *out; |
| 5374 | new_method.CopyFrom(def_method, image_pointer_size_); |
| 5375 | new_method.SetAccessFlags(new_method.GetAccessFlags() | kAccDefault); |
| 5376 | // Clear the preverified flag if it is present. Since this class hasn't been verified yet it |
| 5377 | // shouldn't have methods that are preverified. |
| 5378 | // TODO This is rather arbitrary. We should maybe support classes where only some of its |
| 5379 | // methods are preverified. |
| 5380 | new_method.SetAccessFlags(new_method.GetAccessFlags() & ~kAccPreverified); |
| 5381 | move_table.emplace(def_method, &new_method); |
Mathieu Chartier | cf3b1a3 | 2015-06-01 14:30:06 -0700 | [diff] [blame] | 5382 | ++out; |
Mathieu Chartier | cf3b1a3 | 2015-06-01 14:30:06 -0700 | [diff] [blame] | 5383 | } |
Vladimir Marko | 35831e8 | 2015-09-11 11:59:18 +0100 | [diff] [blame] | 5384 | virtuals->SetSize(new_method_count); |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 5385 | UpdateClassVirtualMethods(klass.Get(), virtuals); |
Mathieu Chartier | d4d83b8 | 2015-06-19 20:24:45 -0700 | [diff] [blame] | 5386 | // Done copying methods, they are all roots in the class now, so we can end the no thread |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5387 | // suspension assert. |
| 5388 | self->EndAssertNoThreadSuspension(old_cause); |
Mathieu Chartier | d4d83b8 | 2015-06-19 20:24:45 -0700 | [diff] [blame] | 5389 | |
| 5390 | const size_t old_vtable_count = vtable->GetLength(); |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5391 | const size_t new_vtable_count = |
| 5392 | old_vtable_count + miranda_methods.size() + default_methods.size(); |
Mathieu Chartier | d4d83b8 | 2015-06-19 20:24:45 -0700 | [diff] [blame] | 5393 | miranda_methods.clear(); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5394 | vtable.Assign(down_cast<mirror::PointerArray*>(vtable->CopyOf(self, new_vtable_count))); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 5395 | if (UNLIKELY(vtable.Get() == nullptr)) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5396 | self->AssertPendingOOMException(); |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 5397 | return false; |
| 5398 | } |
Vladimir Marko | 35831e8 | 2015-09-11 11:59:18 +0100 | [diff] [blame] | 5399 | out = virtuals->begin(method_size, method_alignment) + old_method_count; |
Mathieu Chartier | d4d83b8 | 2015-06-19 20:24:45 -0700 | [diff] [blame] | 5400 | size_t vtable_pos = old_vtable_count; |
| 5401 | for (size_t i = old_method_count; i < new_method_count; ++i) { |
| 5402 | // Leave the declaring class alone as type indices are relative to it |
| 5403 | out->SetMethodIndex(0xFFFF & vtable_pos); |
| 5404 | vtable->SetElementPtrSize(vtable_pos, &*out, image_pointer_size_); |
| 5405 | ++out; |
| 5406 | ++vtable_pos; |
| 5407 | } |
| 5408 | CHECK_EQ(vtable_pos, new_vtable_count); |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5409 | // Update old vtable methods. We use the default_translations map to figure out what each vtable |
| 5410 | // entry should be updated to, if they need to be at all. |
Mathieu Chartier | d4d83b8 | 2015-06-19 20:24:45 -0700 | [diff] [blame] | 5411 | for (size_t i = 0; i < old_vtable_count; ++i) { |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5412 | ArtMethod* translated_method = vtable->GetElementPtrSize<ArtMethod*>(i, image_pointer_size_); |
| 5413 | // Try and find what we need to change this method to. |
| 5414 | auto translation_it = default_translations.find(i); |
| 5415 | bool found_translation = false; |
| 5416 | if (translation_it != default_translations.end()) { |
| 5417 | size_t vtable_index; |
| 5418 | std::tie(vtable_index, translated_method) = *translation_it; |
| 5419 | DCHECK_EQ(vtable_index, i); |
| 5420 | found_translation = true; |
| 5421 | } |
| 5422 | DCHECK(translated_method != nullptr); |
| 5423 | auto it = move_table.find(translated_method); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5424 | if (it != move_table.end()) { |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5425 | auto* new_method = it->second; |
| 5426 | DCHECK(new_method != nullptr); |
| 5427 | vtable->SetElementPtrSize(i, new_method, image_pointer_size_); |
| 5428 | } else { |
| 5429 | // If it was not going to be updated we wouldn't have put it into the default_translations |
| 5430 | // map. |
| 5431 | CHECK(!found_translation) << "We were asked to update this vtable entry. Must not fail."; |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5432 | } |
| 5433 | } |
Mathieu Chartier | cf3b1a3 | 2015-06-01 14:30:06 -0700 | [diff] [blame] | 5434 | |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 5435 | klass->SetVTable(vtable.Get()); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5436 | // Go fix up all the stale miranda pointers. |
| 5437 | for (size_t i = 0; i < ifcount; ++i) { |
| 5438 | for (size_t j = 0, count = iftable->GetMethodArrayCount(i); j < count; ++j) { |
| 5439 | auto* method_array = iftable->GetMethodArray(i); |
| 5440 | auto* m = method_array->GetElementPtrSize<ArtMethod*>(j, image_pointer_size_); |
| 5441 | DCHECK(m != nullptr) << PrettyClass(klass.Get()); |
| 5442 | auto it = move_table.find(m); |
| 5443 | if (it != move_table.end()) { |
| 5444 | auto* new_m = it->second; |
| 5445 | DCHECK(new_m != nullptr) << PrettyClass(klass.Get()); |
| 5446 | method_array->SetElementPtrSize(j, new_m, image_pointer_size_); |
| 5447 | } |
| 5448 | } |
| 5449 | } |
Mathieu Chartier | a40c74a | 2015-06-02 09:56:04 -0700 | [diff] [blame] | 5450 | // Fix up IMT in case it has any miranda methods in it. |
| 5451 | for (size_t i = 0; i < mirror::Class::kImtSize; ++i) { |
| 5452 | auto it = move_table.find(out_imt[i]); |
| 5453 | if (it != move_table.end()) { |
| 5454 | out_imt[i] = it->second; |
| 5455 | } |
| 5456 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5457 | // Check that there are no stale methods are in the dex cache array. |
| 5458 | if (kIsDebugBuild) { |
| 5459 | auto* resolved_methods = klass->GetDexCache()->GetResolvedMethods(); |
Vladimir Marko | 05792b9 | 2015-08-03 11:56:49 +0100 | [diff] [blame] | 5460 | for (size_t i = 0, count = klass->GetDexCache()->NumResolvedMethods(); i < count; ++i) { |
| 5461 | auto* m = mirror::DexCache::GetElementPtrSize(resolved_methods, i, image_pointer_size_); |
Alex Light | eb7c144 | 2015-08-31 13:17:42 -0700 | [diff] [blame] | 5462 | // We don't remove default methods from the move table since we need them to update the |
| 5463 | // vtable. Therefore just skip them for this check. |
| 5464 | if (!m->IsDefault()) { |
| 5465 | CHECK(move_table.find(m) == move_table.end()) << PrettyMethod(m); |
| 5466 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5467 | } |
| 5468 | } |
| 5469 | // Put some random garbage in old virtuals to help find stale pointers. |
| 5470 | if (virtuals != old_virtuals) { |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 5471 | memset(old_virtuals, 0xFEu, old_size); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5472 | } |
| 5473 | } else { |
| 5474 | self->EndAssertNoThreadSuspension(old_cause); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 5475 | } |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5476 | if (kIsDebugBuild) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5477 | auto* check_vtable = klass->GetVTableDuringLinking(); |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 5478 | for (int i = 0; i < check_vtable->GetLength(); ++i) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5479 | CHECK(check_vtable->GetElementPtrSize<ArtMethod*>(i, image_pointer_size_) != nullptr); |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 5480 | } |
Elliott Hughes | 4681c80 | 2011-09-25 18:04:37 -0700 | [diff] [blame] | 5481 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 5482 | return true; |
| 5483 | } |
| 5484 | |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 5485 | bool ClassLinker::LinkInstanceFields(Thread* self, Handle<mirror::Class> klass) { |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 5486 | CHECK(klass.Get() != nullptr); |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 5487 | return LinkFields(self, klass, false, nullptr); |
Brian Carlstrom | 4873d46 | 2011-08-21 15:23:39 -0700 | [diff] [blame] | 5488 | } |
| 5489 | |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 5490 | bool ClassLinker::LinkStaticFields(Thread* self, Handle<mirror::Class> klass, size_t* class_size) { |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 5491 | CHECK(klass.Get() != nullptr); |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 5492 | return LinkFields(self, klass, true, class_size); |
Brian Carlstrom | 4873d46 | 2011-08-21 15:23:39 -0700 | [diff] [blame] | 5493 | } |
| 5494 | |
Brian Carlstrom | dbc0525 | 2011-09-09 01:59:59 -0700 | [diff] [blame] | 5495 | struct LinkFieldsComparator { |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 5496 | explicit LinkFieldsComparator() SHARED_REQUIRES(Locks::mutator_lock_) { |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 5497 | } |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 5498 | // No thread safety analysis as will be called from STL. Checked lock held in constructor. |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 5499 | bool operator()(ArtField* field1, ArtField* field2) |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 5500 | NO_THREAD_SAFETY_ANALYSIS { |
Fred Shih | 37f05ef | 2014-07-16 18:38:08 -0700 | [diff] [blame] | 5501 | // First come reference fields, then 64-bit, then 32-bit, and then 16-bit, then finally 8-bit. |
Mathieu Chartier | 61c5ebc | 2014-06-05 17:42:53 -0700 | [diff] [blame] | 5502 | Primitive::Type type1 = field1->GetTypeAsPrimitiveType(); |
| 5503 | Primitive::Type type2 = field2->GetTypeAsPrimitiveType(); |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 5504 | if (type1 != type2) { |
Vladimir Marko | d577748 | 2014-11-12 17:02:02 +0000 | [diff] [blame] | 5505 | if (type1 == Primitive::kPrimNot) { |
| 5506 | // Reference always goes first. |
| 5507 | return true; |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 5508 | } |
Vladimir Marko | d577748 | 2014-11-12 17:02:02 +0000 | [diff] [blame] | 5509 | if (type2 == Primitive::kPrimNot) { |
| 5510 | // Reference always goes first. |
| 5511 | return false; |
| 5512 | } |
| 5513 | size_t size1 = Primitive::ComponentSize(type1); |
| 5514 | size_t size2 = Primitive::ComponentSize(type2); |
| 5515 | if (size1 != size2) { |
| 5516 | // Larger primitive types go first. |
| 5517 | return size1 > size2; |
| 5518 | } |
| 5519 | // Primitive types differ but sizes match. Arbitrarily order by primitive type. |
| 5520 | return type1 < type2; |
Brian Carlstrom | dbc0525 | 2011-09-09 01:59:59 -0700 | [diff] [blame] | 5521 | } |
Vladimir Marko | 7a7c1db | 2014-11-17 15:13:34 +0000 | [diff] [blame] | 5522 | // Same basic group? Then sort by dex field index. This is guaranteed to be sorted |
| 5523 | // by name and for equal names by type id index. |
| 5524 | // NOTE: This works also for proxies. Their static fields are assigned appropriate indexes. |
| 5525 | return field1->GetDexFieldIndex() < field2->GetDexFieldIndex(); |
Brian Carlstrom | dbc0525 | 2011-09-09 01:59:59 -0700 | [diff] [blame] | 5526 | } |
| 5527 | }; |
| 5528 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 5529 | bool ClassLinker::LinkFields(Thread* self, |
| 5530 | Handle<mirror::Class> klass, |
| 5531 | bool is_static, |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 5532 | size_t* class_size) { |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 5533 | self->AllowThreadSuspension(); |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 5534 | const size_t num_fields = is_static ? klass->NumStaticFields() : klass->NumInstanceFields(); |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 5535 | LengthPrefixedArray<ArtField>* const fields = is_static ? klass->GetSFieldsPtr() : |
| 5536 | klass->GetIFieldsPtr(); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 5537 | |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 5538 | // Initialize field_offset |
Brian Carlstrom | 693267a | 2011-09-06 09:25:34 -0700 | [diff] [blame] | 5539 | MemberOffset field_offset(0); |
Brian Carlstrom | 3320cf4 | 2011-10-04 14:58:28 -0700 | [diff] [blame] | 5540 | if (is_static) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5541 | field_offset = klass->GetFirstReferenceStaticFieldOffsetDuringLinking(image_pointer_size_); |
Brian Carlstrom | 3320cf4 | 2011-10-04 14:58:28 -0700 | [diff] [blame] | 5542 | } else { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 5543 | mirror::Class* super_class = klass->GetSuperClass(); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 5544 | if (super_class != nullptr) { |
Brian Carlstrom | f363283 | 2014-05-20 15:36:53 -0700 | [diff] [blame] | 5545 | CHECK(super_class->IsResolved()) |
| 5546 | << PrettyClass(klass.Get()) << " " << PrettyClass(super_class); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 5547 | field_offset = MemberOffset(super_class->GetObjectSize()); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 5548 | } |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 5549 | } |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 5550 | |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 5551 | CHECK_EQ(num_fields == 0, fields == nullptr) << PrettyClass(klass.Get()); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 5552 | |
Brian Carlstrom | dbc0525 | 2011-09-09 01:59:59 -0700 | [diff] [blame] | 5553 | // we want a relatively stable order so that adding new fields |
Elliott Hughes | adb460d | 2011-10-05 17:02:34 -0700 | [diff] [blame] | 5554 | // minimizes disruption of C++ version such as Class and Method. |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 5555 | std::deque<ArtField*> grouped_and_sorted_fields; |
Mathieu Chartier | 2d5f39e | 2014-09-19 17:52:37 -0700 | [diff] [blame] | 5556 | const char* old_no_suspend_cause = self->StartAssertNoThreadSuspension( |
Fred Shih | 37f05ef | 2014-07-16 18:38:08 -0700 | [diff] [blame] | 5557 | "Naked ArtField references in deque"); |
Brian Carlstrom | dbc0525 | 2011-09-09 01:59:59 -0700 | [diff] [blame] | 5558 | for (size_t i = 0; i < num_fields; i++) { |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 5559 | grouped_and_sorted_fields.push_back(&fields->At(i)); |
Brian Carlstrom | dbc0525 | 2011-09-09 01:59:59 -0700 | [diff] [blame] | 5560 | } |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 5561 | std::sort(grouped_and_sorted_fields.begin(), grouped_and_sorted_fields.end(), |
| 5562 | LinkFieldsComparator()); |
Brian Carlstrom | dbc0525 | 2011-09-09 01:59:59 -0700 | [diff] [blame] | 5563 | |
Fred Shih | 381e4ca | 2014-08-25 17:24:27 -0700 | [diff] [blame] | 5564 | // References should be at the front. |
Brian Carlstrom | dbc0525 | 2011-09-09 01:59:59 -0700 | [diff] [blame] | 5565 | size_t current_field = 0; |
| 5566 | size_t num_reference_fields = 0; |
Fred Shih | 381e4ca | 2014-08-25 17:24:27 -0700 | [diff] [blame] | 5567 | FieldGaps gaps; |
| 5568 | |
Brian Carlstrom | dbc0525 | 2011-09-09 01:59:59 -0700 | [diff] [blame] | 5569 | for (; current_field < num_fields; current_field++) { |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 5570 | ArtField* field = grouped_and_sorted_fields.front(); |
Mathieu Chartier | 61c5ebc | 2014-06-05 17:42:53 -0700 | [diff] [blame] | 5571 | Primitive::Type type = field->GetTypeAsPrimitiveType(); |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 5572 | bool isPrimitive = type != Primitive::kPrimNot; |
Brian Carlstrom | dbc0525 | 2011-09-09 01:59:59 -0700 | [diff] [blame] | 5573 | if (isPrimitive) { |
Brian Carlstrom | 7934ac2 | 2013-07-26 10:54:15 -0700 | [diff] [blame] | 5574 | break; // past last reference, move on to the next phase |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 5575 | } |
Vladimir Marko | 76649e8 | 2014-11-10 18:32:59 +0000 | [diff] [blame] | 5576 | if (UNLIKELY(!IsAligned<sizeof(mirror::HeapReference<mirror::Object>)>( |
| 5577 | field_offset.Uint32Value()))) { |
Fred Shih | 381e4ca | 2014-08-25 17:24:27 -0700 | [diff] [blame] | 5578 | MemberOffset old_offset = field_offset; |
| 5579 | field_offset = MemberOffset(RoundUp(field_offset.Uint32Value(), 4)); |
| 5580 | AddFieldGap(old_offset.Uint32Value(), field_offset.Uint32Value(), &gaps); |
| 5581 | } |
Roland Levillain | 14d9057 | 2015-07-16 10:52:26 +0100 | [diff] [blame] | 5582 | DCHECK_ALIGNED(field_offset.Uint32Value(), sizeof(mirror::HeapReference<mirror::Object>)); |
Brian Carlstrom | dbc0525 | 2011-09-09 01:59:59 -0700 | [diff] [blame] | 5583 | grouped_and_sorted_fields.pop_front(); |
| 5584 | num_reference_fields++; |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 5585 | field->SetOffset(field_offset); |
Vladimir Marko | 76649e8 | 2014-11-10 18:32:59 +0000 | [diff] [blame] | 5586 | field_offset = MemberOffset(field_offset.Uint32Value() + |
| 5587 | sizeof(mirror::HeapReference<mirror::Object>)); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 5588 | } |
Fred Shih | 381e4ca | 2014-08-25 17:24:27 -0700 | [diff] [blame] | 5589 | // Gaps are stored as a max heap which means that we must shuffle from largest to smallest |
| 5590 | // otherwise we could end up with suboptimal gap fills. |
Vladimir Marko | 76649e8 | 2014-11-10 18:32:59 +0000 | [diff] [blame] | 5591 | ShuffleForward<8>(¤t_field, &field_offset, &grouped_and_sorted_fields, &gaps); |
| 5592 | ShuffleForward<4>(¤t_field, &field_offset, &grouped_and_sorted_fields, &gaps); |
| 5593 | ShuffleForward<2>(¤t_field, &field_offset, &grouped_and_sorted_fields, &gaps); |
| 5594 | ShuffleForward<1>(¤t_field, &field_offset, &grouped_and_sorted_fields, &gaps); |
Fred Shih | 37f05ef | 2014-07-16 18:38:08 -0700 | [diff] [blame] | 5595 | CHECK(grouped_and_sorted_fields.empty()) << "Missed " << grouped_and_sorted_fields.size() << |
| 5596 | " fields."; |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 5597 | self->EndAssertNoThreadSuspension(old_no_suspend_cause); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 5598 | |
Elliott Hughes | adb460d | 2011-10-05 17:02:34 -0700 | [diff] [blame] | 5599 | // We lie to the GC about the java.lang.ref.Reference.referent field, so it doesn't scan it. |
Mathieu Chartier | 0cd8135 | 2014-05-22 16:48:55 -0700 | [diff] [blame] | 5600 | if (!is_static && klass->DescriptorEquals("Ljava/lang/ref/Reference;")) { |
Elliott Hughes | adb460d | 2011-10-05 17:02:34 -0700 | [diff] [blame] | 5601 | // We know there are no non-reference fields in the Reference classes, and we know |
| 5602 | // that 'referent' is alphabetically last, so this is easy... |
Brian Carlstrom | f363283 | 2014-05-20 15:36:53 -0700 | [diff] [blame] | 5603 | CHECK_EQ(num_reference_fields, num_fields) << PrettyClass(klass.Get()); |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 5604 | CHECK_STREQ(fields->At(num_fields - 1).GetName(), "referent") |
| 5605 | << PrettyClass(klass.Get()); |
Elliott Hughes | adb460d | 2011-10-05 17:02:34 -0700 | [diff] [blame] | 5606 | --num_reference_fields; |
| 5607 | } |
| 5608 | |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 5609 | size_t size = field_offset.Uint32Value(); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 5610 | // Update klass |
Brian Carlstrom | 3320cf4 | 2011-10-04 14:58:28 -0700 | [diff] [blame] | 5611 | if (is_static) { |
| 5612 | klass->SetNumReferenceStaticFields(num_reference_fields); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 5613 | *class_size = size; |
Brian Carlstrom | 3320cf4 | 2011-10-04 14:58:28 -0700 | [diff] [blame] | 5614 | } else { |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 5615 | klass->SetNumReferenceInstanceFields(num_reference_fields); |
Mathieu Chartier | 52a7f5c | 2015-08-18 18:35:52 -0700 | [diff] [blame] | 5616 | mirror::Class* super_class = klass->GetSuperClass(); |
| 5617 | if (num_reference_fields == 0 || super_class == nullptr) { |
| 5618 | // object has one reference field, klass, but we ignore it since we always visit the class. |
Mathieu Chartier | 66c2d2d | 2015-08-25 14:32:32 -0700 | [diff] [blame] | 5619 | // super_class is null iff the class is java.lang.Object. |
Mathieu Chartier | 52a7f5c | 2015-08-18 18:35:52 -0700 | [diff] [blame] | 5620 | if (super_class == nullptr || |
| 5621 | (super_class->GetClassFlags() & mirror::kClassFlagNoReferenceFields) != 0) { |
| 5622 | klass->SetClassFlags(klass->GetClassFlags() | mirror::kClassFlagNoReferenceFields); |
Mathieu Chartier | 66c2d2d | 2015-08-25 14:32:32 -0700 | [diff] [blame] | 5623 | } |
| 5624 | } |
| 5625 | if (kIsDebugBuild) { |
| 5626 | DCHECK_EQ(super_class == nullptr, klass->DescriptorEquals("Ljava/lang/Object;")); |
| 5627 | size_t total_reference_instance_fields = 0; |
| 5628 | mirror::Class* cur_super = klass.Get(); |
| 5629 | while (cur_super != nullptr) { |
| 5630 | total_reference_instance_fields += cur_super->NumReferenceInstanceFieldsDuringLinking(); |
| 5631 | cur_super = cur_super->GetSuperClass(); |
| 5632 | } |
| 5633 | if (super_class == nullptr) { |
| 5634 | CHECK_EQ(total_reference_instance_fields, 1u) << PrettyDescriptor(klass.Get()); |
| 5635 | } else { |
| 5636 | // Check that there is at least num_reference_fields other than Object.class. |
| 5637 | CHECK_GE(total_reference_instance_fields, 1u + num_reference_fields) |
| 5638 | << PrettyClass(klass.Get()); |
Mathieu Chartier | 52a7f5c | 2015-08-18 18:35:52 -0700 | [diff] [blame] | 5639 | } |
| 5640 | } |
Brian Carlstrom | dbc0525 | 2011-09-09 01:59:59 -0700 | [diff] [blame] | 5641 | if (!klass->IsVariableSize()) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5642 | std::string temp; |
| 5643 | DCHECK_GE(size, sizeof(mirror::Object)) << klass->GetDescriptor(&temp); |
| 5644 | size_t previous_size = klass->GetObjectSize(); |
| 5645 | if (previous_size != 0) { |
| 5646 | // Make sure that we didn't originally have an incorrect size. |
| 5647 | CHECK_EQ(previous_size, size) << klass->GetDescriptor(&temp); |
Mathieu Chartier | 79b4f38 | 2013-10-23 15:21:37 -0700 | [diff] [blame] | 5648 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5649 | klass->SetObjectSize(size); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 5650 | } |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 5651 | } |
Vladimir Marko | 76649e8 | 2014-11-10 18:32:59 +0000 | [diff] [blame] | 5652 | |
| 5653 | if (kIsDebugBuild) { |
| 5654 | // Make sure that the fields array is ordered by name but all reference |
| 5655 | // offsets are at the beginning as far as alignment allows. |
| 5656 | MemberOffset start_ref_offset = is_static |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5657 | ? klass->GetFirstReferenceStaticFieldOffsetDuringLinking(image_pointer_size_) |
Vladimir Marko | 76649e8 | 2014-11-10 18:32:59 +0000 | [diff] [blame] | 5658 | : klass->GetFirstReferenceInstanceFieldOffset(); |
| 5659 | MemberOffset end_ref_offset(start_ref_offset.Uint32Value() + |
| 5660 | num_reference_fields * |
| 5661 | sizeof(mirror::HeapReference<mirror::Object>)); |
| 5662 | MemberOffset current_ref_offset = start_ref_offset; |
| 5663 | for (size_t i = 0; i < num_fields; i++) { |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 5664 | ArtField* field = &fields->At(i); |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 5665 | VLOG(class_linker) << "LinkFields: " << (is_static ? "static" : "instance") |
| 5666 | << " class=" << PrettyClass(klass.Get()) << " field=" << PrettyField(field) << " offset=" |
Nicolas Geoffray | 555b3d0 | 2015-06-23 12:11:24 +0100 | [diff] [blame] | 5667 | << field->GetOffsetDuringLinking(); |
Vladimir Marko | 76649e8 | 2014-11-10 18:32:59 +0000 | [diff] [blame] | 5668 | if (i != 0) { |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 5669 | ArtField* const prev_field = &fields->At(i - 1); |
Vladimir Marko | 7a7c1db | 2014-11-17 15:13:34 +0000 | [diff] [blame] | 5670 | // NOTE: The field names can be the same. This is not possible in the Java language |
| 5671 | // but it's valid Java/dex bytecode and for example proguard can generate such bytecode. |
Mathieu Chartier | 54d220e | 2015-07-30 16:20:06 -0700 | [diff] [blame] | 5672 | DCHECK_LE(strcmp(prev_field->GetName(), field->GetName()), 0); |
Vladimir Marko | 76649e8 | 2014-11-10 18:32:59 +0000 | [diff] [blame] | 5673 | } |
| 5674 | Primitive::Type type = field->GetTypeAsPrimitiveType(); |
| 5675 | bool is_primitive = type != Primitive::kPrimNot; |
| 5676 | if (klass->DescriptorEquals("Ljava/lang/ref/Reference;") && |
| 5677 | strcmp("referent", field->GetName()) == 0) { |
| 5678 | is_primitive = true; // We lied above, so we have to expect a lie here. |
| 5679 | } |
| 5680 | MemberOffset offset = field->GetOffsetDuringLinking(); |
| 5681 | if (is_primitive) { |
| 5682 | if (offset.Uint32Value() < end_ref_offset.Uint32Value()) { |
| 5683 | // Shuffled before references. |
| 5684 | size_t type_size = Primitive::ComponentSize(type); |
| 5685 | CHECK_LT(type_size, sizeof(mirror::HeapReference<mirror::Object>)); |
| 5686 | CHECK_LT(offset.Uint32Value(), start_ref_offset.Uint32Value()); |
| 5687 | CHECK_LE(offset.Uint32Value() + type_size, start_ref_offset.Uint32Value()); |
| 5688 | CHECK(!IsAligned<sizeof(mirror::HeapReference<mirror::Object>)>(offset.Uint32Value())); |
| 5689 | } |
| 5690 | } else { |
| 5691 | CHECK_EQ(current_ref_offset.Uint32Value(), offset.Uint32Value()); |
| 5692 | current_ref_offset = MemberOffset(current_ref_offset.Uint32Value() + |
| 5693 | sizeof(mirror::HeapReference<mirror::Object>)); |
| 5694 | } |
| 5695 | } |
| 5696 | CHECK_EQ(current_ref_offset.Uint32Value(), end_ref_offset.Uint32Value()); |
| 5697 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 5698 | return true; |
| 5699 | } |
| 5700 | |
Vladimir Marko | 76649e8 | 2014-11-10 18:32:59 +0000 | [diff] [blame] | 5701 | // Set the bitmap of reference instance field offsets. |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 5702 | void ClassLinker::CreateReferenceInstanceOffsets(Handle<mirror::Class> klass) { |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 5703 | uint32_t reference_offsets = 0; |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 5704 | mirror::Class* super_class = klass->GetSuperClass(); |
Ian Rogers | cdc1aaf | 2014-10-09 13:21:38 -0700 | [diff] [blame] | 5705 | // Leave the reference offsets as 0 for mirror::Object (the class field is handled specially). |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 5706 | if (super_class != nullptr) { |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 5707 | reference_offsets = super_class->GetReferenceInstanceOffsets(); |
Ian Rogers | cdc1aaf | 2014-10-09 13:21:38 -0700 | [diff] [blame] | 5708 | // Compute reference offsets unless our superclass overflowed. |
| 5709 | if (reference_offsets != mirror::Class::kClassWalkSuper) { |
| 5710 | size_t num_reference_fields = klass->NumReferenceInstanceFieldsDuringLinking(); |
Vladimir Marko | 76649e8 | 2014-11-10 18:32:59 +0000 | [diff] [blame] | 5711 | if (num_reference_fields != 0u) { |
| 5712 | // All of the fields that contain object references are guaranteed be grouped in memory |
| 5713 | // starting at an appropriately aligned address after super class object data. |
| 5714 | uint32_t start_offset = RoundUp(super_class->GetObjectSize(), |
| 5715 | sizeof(mirror::HeapReference<mirror::Object>)); |
| 5716 | uint32_t start_bit = (start_offset - mirror::kObjectHeaderSize) / |
Ian Rogers | cdc1aaf | 2014-10-09 13:21:38 -0700 | [diff] [blame] | 5717 | sizeof(mirror::HeapReference<mirror::Object>); |
Vladimir Marko | 76649e8 | 2014-11-10 18:32:59 +0000 | [diff] [blame] | 5718 | if (start_bit + num_reference_fields > 32) { |
Ian Rogers | cdc1aaf | 2014-10-09 13:21:38 -0700 | [diff] [blame] | 5719 | reference_offsets = mirror::Class::kClassWalkSuper; |
Ian Rogers | cdc1aaf | 2014-10-09 13:21:38 -0700 | [diff] [blame] | 5720 | } else { |
Vladimir Marko | 76649e8 | 2014-11-10 18:32:59 +0000 | [diff] [blame] | 5721 | reference_offsets |= (0xffffffffu << start_bit) & |
| 5722 | (0xffffffffu >> (32 - (start_bit + num_reference_fields))); |
Ian Rogers | cdc1aaf | 2014-10-09 13:21:38 -0700 | [diff] [blame] | 5723 | } |
| 5724 | } |
Brian Carlstrom | 4873d46 | 2011-08-21 15:23:39 -0700 | [diff] [blame] | 5725 | } |
| 5726 | } |
Mingyao Yang | faff0f0 | 2014-09-10 12:03:22 -0700 | [diff] [blame] | 5727 | klass->SetReferenceInstanceOffsets(reference_offsets); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 5728 | } |
| 5729 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 5730 | mirror::String* ClassLinker::ResolveString(const DexFile& dex_file, |
| 5731 | uint32_t string_idx, |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 5732 | Handle<mirror::DexCache> dex_cache) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 5733 | DCHECK(dex_cache.Get() != nullptr); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 5734 | mirror::String* resolved = dex_cache->GetResolvedString(string_idx); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 5735 | if (resolved != nullptr) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 5736 | return resolved; |
| 5737 | } |
Ian Rogers | dfb325e | 2013-10-30 01:00:44 -0700 | [diff] [blame] | 5738 | uint32_t utf16_length; |
| 5739 | const char* utf8_data = dex_file.StringDataAndUtf16LengthByIdx(string_idx, &utf16_length); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 5740 | mirror::String* string = intern_table_->InternStrong(utf16_length, utf8_data); |
Brian Carlstrom | 9ea1cb1 | 2011-08-24 23:18:18 -0700 | [diff] [blame] | 5741 | dex_cache->SetResolvedString(string_idx, string); |
| 5742 | return string; |
| 5743 | } |
| 5744 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 5745 | mirror::Class* ClassLinker::ResolveType(const DexFile& dex_file, |
| 5746 | uint16_t type_idx, |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 5747 | mirror::Class* referrer) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 5748 | StackHandleScope<2> hs(Thread::Current()); |
| 5749 | Handle<mirror::DexCache> dex_cache(hs.NewHandle(referrer->GetDexCache())); |
| 5750 | Handle<mirror::ClassLoader> class_loader(hs.NewHandle(referrer->GetClassLoader())); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 5751 | return ResolveType(dex_file, type_idx, dex_cache, class_loader); |
| 5752 | } |
| 5753 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 5754 | mirror::Class* ClassLinker::ResolveType(const DexFile& dex_file, |
| 5755 | uint16_t type_idx, |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 5756 | Handle<mirror::DexCache> dex_cache, |
| 5757 | Handle<mirror::ClassLoader> class_loader) { |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 5758 | DCHECK(dex_cache.Get() != nullptr); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 5759 | mirror::Class* resolved = dex_cache->GetResolvedType(type_idx); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 5760 | if (resolved == nullptr) { |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 5761 | Thread* self = Thread::Current(); |
Ian Rogers | 0571d35 | 2011-11-03 19:51:38 -0700 | [diff] [blame] | 5762 | const char* descriptor = dex_file.StringByTypeIdx(type_idx); |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 5763 | resolved = FindClass(self, descriptor, class_loader); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 5764 | if (resolved != nullptr) { |
Jesse Wilson | 254db0f | 2011-11-16 16:44:11 -0500 | [diff] [blame] | 5765 | // TODO: we used to throw here if resolved's class loader was not the |
| 5766 | // boot class loader. This was to permit different classes with the |
| 5767 | // same name to be loaded simultaneously by different loaders |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 5768 | dex_cache->SetResolvedType(type_idx, resolved); |
| 5769 | } else { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 5770 | CHECK(self->IsExceptionPending()) |
Ian Rogers | cab0101 | 2012-01-10 17:35:46 -0800 | [diff] [blame] | 5771 | << "Expected pending exception for failed resolution of: " << descriptor; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 5772 | // Convert a ClassNotFoundException to a NoClassDefFoundError. |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 5773 | StackHandleScope<1> hs(self); |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 5774 | Handle<mirror::Throwable> cause(hs.NewHandle(self->GetException())); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 5775 | if (cause->InstanceOf(GetClassRoot(kJavaLangClassNotFoundException))) { |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 5776 | DCHECK(resolved == nullptr); // No Handle needed to preserve resolved. |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 5777 | self->ClearException(); |
jeffhao | 8cd6dda | 2012-02-22 10:15:34 -0800 | [diff] [blame] | 5778 | ThrowNoClassDefFoundError("Failed resolution of: %s", descriptor); |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 5779 | self->GetException()->SetCause(cause.Get()); |
jeffhao | 8cd6dda | 2012-02-22 10:15:34 -0800 | [diff] [blame] | 5780 | } |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 5781 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 5782 | } |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 5783 | DCHECK((resolved == nullptr) || resolved->IsResolved() || resolved->IsErroneous()) |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5784 | << PrettyDescriptor(resolved) << " " << resolved->GetStatus(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 5785 | return resolved; |
| 5786 | } |
| 5787 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 5788 | ArtMethod* ClassLinker::ResolveMethod(const DexFile& dex_file, |
| 5789 | uint32_t method_idx, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5790 | Handle<mirror::DexCache> dex_cache, |
| 5791 | Handle<mirror::ClassLoader> class_loader, |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 5792 | ArtMethod* referrer, |
| 5793 | InvokeType type) { |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5794 | DCHECK(dex_cache.Get() != nullptr); |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 5795 | // Check for hit in the dex cache. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5796 | ArtMethod* resolved = dex_cache->GetResolvedMethod(method_idx, image_pointer_size_); |
Mathieu Chartier | 0cd8135 | 2014-05-22 16:48:55 -0700 | [diff] [blame] | 5797 | if (resolved != nullptr && !resolved->IsRuntimeMethod()) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5798 | DCHECK(resolved->GetDeclaringClassUnchecked() != nullptr) << resolved->GetDexMethodIndex(); |
Brian Carlstrom | 9ea1cb1 | 2011-08-24 23:18:18 -0700 | [diff] [blame] | 5799 | return resolved; |
| 5800 | } |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 5801 | // Fail, get the declaring class. |
Brian Carlstrom | 9ea1cb1 | 2011-08-24 23:18:18 -0700 | [diff] [blame] | 5802 | const DexFile::MethodId& method_id = dex_file.GetMethodId(method_idx); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 5803 | mirror::Class* klass = ResolveType(dex_file, method_id.class_idx_, dex_cache, class_loader); |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5804 | if (klass == nullptr) { |
Elliott Hughes | cc5f9a9 | 2011-09-28 19:17:29 -0700 | [diff] [blame] | 5805 | DCHECK(Thread::Current()->IsExceptionPending()); |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5806 | return nullptr; |
Brian Carlstrom | 9ea1cb1 | 2011-08-24 23:18:18 -0700 | [diff] [blame] | 5807 | } |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 5808 | // Scan using method_idx, this saves string compares but will only hit for matching dex |
| 5809 | // caches/files. |
| 5810 | switch (type) { |
| 5811 | case kDirect: // Fall-through. |
| 5812 | case kStatic: |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5813 | resolved = klass->FindDirectMethod(dex_cache.Get(), method_idx, image_pointer_size_); |
| 5814 | DCHECK(resolved == nullptr || resolved->GetDeclaringClassUnchecked() != nullptr); |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 5815 | break; |
| 5816 | case kInterface: |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5817 | resolved = klass->FindInterfaceMethod(dex_cache.Get(), method_idx, image_pointer_size_); |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5818 | DCHECK(resolved == nullptr || resolved->GetDeclaringClass()->IsInterface()); |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 5819 | break; |
| 5820 | case kSuper: // Fall-through. |
| 5821 | case kVirtual: |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5822 | resolved = klass->FindVirtualMethod(dex_cache.Get(), method_idx, image_pointer_size_); |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 5823 | break; |
| 5824 | default: |
| 5825 | LOG(FATAL) << "Unreachable - invocation type: " << type; |
Ian Rogers | 2c4257b | 2014-10-24 14:20:06 -0700 | [diff] [blame] | 5826 | UNREACHABLE(); |
Brian Carlstrom | 20cfffa | 2011-08-26 02:31:27 -0700 | [diff] [blame] | 5827 | } |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5828 | if (resolved == nullptr) { |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 5829 | // Search by name, which works across dex files. |
Ian Rogers | 7b0c5b4 | 2012-02-16 15:29:07 -0800 | [diff] [blame] | 5830 | const char* name = dex_file.StringDataByIdx(method_id.name_idx_); |
Ian Rogers | d91d6d6 | 2013-09-25 20:26:14 -0700 | [diff] [blame] | 5831 | const Signature signature = dex_file.GetMethodSignature(method_id); |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 5832 | switch (type) { |
| 5833 | case kDirect: // Fall-through. |
| 5834 | case kStatic: |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5835 | resolved = klass->FindDirectMethod(name, signature, image_pointer_size_); |
| 5836 | DCHECK(resolved == nullptr || resolved->GetDeclaringClassUnchecked() != nullptr); |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 5837 | break; |
| 5838 | case kInterface: |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5839 | resolved = klass->FindInterfaceMethod(name, signature, image_pointer_size_); |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5840 | DCHECK(resolved == nullptr || resolved->GetDeclaringClass()->IsInterface()); |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 5841 | break; |
| 5842 | case kSuper: // Fall-through. |
| 5843 | case kVirtual: |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5844 | resolved = klass->FindVirtualMethod(name, signature, image_pointer_size_); |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 5845 | break; |
Ian Rogers | 7b0c5b4 | 2012-02-16 15:29:07 -0800 | [diff] [blame] | 5846 | } |
Brian Carlstrom | 9ea1cb1 | 2011-08-24 23:18:18 -0700 | [diff] [blame] | 5847 | } |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5848 | // If we found a method, check for incompatible class changes. |
| 5849 | if (LIKELY(resolved != nullptr && !resolved->CheckIncompatibleClassChange(type))) { |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 5850 | // Be a good citizen and update the dex cache to speed subsequent calls. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5851 | dex_cache->SetResolvedMethod(method_idx, resolved, image_pointer_size_); |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 5852 | return resolved; |
| 5853 | } else { |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5854 | // If we had a method, it's an incompatible-class-change error. |
| 5855 | if (resolved != nullptr) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5856 | ThrowIncompatibleClassChangeError(type, resolved->GetInvokeType(), resolved, referrer); |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5857 | } else { |
| 5858 | // We failed to find the method which means either an access error, an incompatible class |
| 5859 | // change, or no such method. First try to find the method among direct and virtual methods. |
| 5860 | const char* name = dex_file.StringDataByIdx(method_id.name_idx_); |
| 5861 | const Signature signature = dex_file.GetMethodSignature(method_id); |
| 5862 | switch (type) { |
| 5863 | case kDirect: |
| 5864 | case kStatic: |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5865 | resolved = klass->FindVirtualMethod(name, signature, image_pointer_size_); |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5866 | // Note: kDirect and kStatic are also mutually exclusive, but in that case we would |
| 5867 | // have had a resolved method before, which triggers the "true" branch above. |
| 5868 | break; |
| 5869 | case kInterface: |
| 5870 | case kVirtual: |
| 5871 | case kSuper: |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5872 | resolved = klass->FindDirectMethod(name, signature, image_pointer_size_); |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5873 | break; |
| 5874 | } |
| 5875 | |
| 5876 | // If we found something, check that it can be accessed by the referrer. |
Ian Rogers | e0a02da | 2014-12-02 14:10:53 -0800 | [diff] [blame] | 5877 | bool exception_generated = false; |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5878 | if (resolved != nullptr && referrer != nullptr) { |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5879 | mirror::Class* methods_class = resolved->GetDeclaringClass(); |
| 5880 | mirror::Class* referring_class = referrer->GetDeclaringClass(); |
| 5881 | if (!referring_class->CanAccess(methods_class)) { |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 5882 | ThrowIllegalAccessErrorClassForMethodDispatch(referring_class, |
| 5883 | methods_class, |
| 5884 | resolved, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5885 | type); |
Ian Rogers | e0a02da | 2014-12-02 14:10:53 -0800 | [diff] [blame] | 5886 | exception_generated = true; |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5887 | } else if (!referring_class->CanAccessMember(methods_class, resolved->GetAccessFlags())) { |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5888 | ThrowIllegalAccessErrorMethod(referring_class, resolved); |
Ian Rogers | e0a02da | 2014-12-02 14:10:53 -0800 | [diff] [blame] | 5889 | exception_generated = true; |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5890 | } |
| 5891 | } |
Ian Rogers | e0a02da | 2014-12-02 14:10:53 -0800 | [diff] [blame] | 5892 | if (!exception_generated) { |
| 5893 | // Otherwise, throw an IncompatibleClassChangeError if we found something, and check |
| 5894 | // interface methods and throw if we find the method there. If we find nothing, throw a |
| 5895 | // NoSuchMethodError. |
| 5896 | switch (type) { |
| 5897 | case kDirect: |
| 5898 | case kStatic: |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5899 | if (resolved != nullptr) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5900 | ThrowIncompatibleClassChangeError(type, kVirtual, resolved, referrer); |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5901 | } else { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5902 | resolved = klass->FindInterfaceMethod(name, signature, image_pointer_size_); |
Ian Rogers | e0a02da | 2014-12-02 14:10:53 -0800 | [diff] [blame] | 5903 | if (resolved != nullptr) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5904 | ThrowIncompatibleClassChangeError(type, kInterface, resolved, referrer); |
Ian Rogers | e0a02da | 2014-12-02 14:10:53 -0800 | [diff] [blame] | 5905 | } else { |
| 5906 | ThrowNoSuchMethodError(type, klass, name, signature); |
| 5907 | } |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5908 | } |
Ian Rogers | e0a02da | 2014-12-02 14:10:53 -0800 | [diff] [blame] | 5909 | break; |
| 5910 | case kInterface: |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5911 | if (resolved != nullptr) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5912 | ThrowIncompatibleClassChangeError(type, kDirect, resolved, referrer); |
Ian Rogers | e0a02da | 2014-12-02 14:10:53 -0800 | [diff] [blame] | 5913 | } else { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5914 | resolved = klass->FindVirtualMethod(name, signature, image_pointer_size_); |
Ian Rogers | e0a02da | 2014-12-02 14:10:53 -0800 | [diff] [blame] | 5915 | if (resolved != nullptr) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5916 | ThrowIncompatibleClassChangeError(type, kVirtual, resolved, referrer); |
Ian Rogers | e0a02da | 2014-12-02 14:10:53 -0800 | [diff] [blame] | 5917 | } else { |
| 5918 | ThrowNoSuchMethodError(type, klass, name, signature); |
| 5919 | } |
| 5920 | } |
| 5921 | break; |
| 5922 | case kSuper: |
| 5923 | if (resolved != nullptr) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5924 | ThrowIncompatibleClassChangeError(type, kDirect, resolved, referrer); |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5925 | } else { |
| 5926 | ThrowNoSuchMethodError(type, klass, name, signature); |
| 5927 | } |
Ian Rogers | e0a02da | 2014-12-02 14:10:53 -0800 | [diff] [blame] | 5928 | break; |
| 5929 | case kVirtual: |
| 5930 | if (resolved != nullptr) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5931 | ThrowIncompatibleClassChangeError(type, kDirect, resolved, referrer); |
Ian Rogers | e0a02da | 2014-12-02 14:10:53 -0800 | [diff] [blame] | 5932 | } else { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5933 | resolved = klass->FindInterfaceMethod(name, signature, image_pointer_size_); |
Ian Rogers | e0a02da | 2014-12-02 14:10:53 -0800 | [diff] [blame] | 5934 | if (resolved != nullptr) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 5935 | ThrowIncompatibleClassChangeError(type, kInterface, resolved, referrer); |
Ian Rogers | e0a02da | 2014-12-02 14:10:53 -0800 | [diff] [blame] | 5936 | } else { |
| 5937 | ThrowNoSuchMethodError(type, klass, name, signature); |
| 5938 | } |
| 5939 | } |
| 5940 | break; |
| 5941 | } |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5942 | } |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 5943 | } |
Ian Rogers | e0a02da | 2014-12-02 14:10:53 -0800 | [diff] [blame] | 5944 | Thread::Current()->AssertPendingException(); |
Andreas Gampe | eff0f5d | 2014-08-13 21:49:37 -0700 | [diff] [blame] | 5945 | return nullptr; |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 5946 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 5947 | } |
| 5948 | |
Jeff Hao | 13e748b | 2015-08-25 20:44:19 +0000 | [diff] [blame] | 5949 | ArtMethod* ClassLinker::ResolveMethodWithoutInvokeType(const DexFile& dex_file, |
| 5950 | uint32_t method_idx, |
| 5951 | Handle<mirror::DexCache> dex_cache, |
| 5952 | Handle<mirror::ClassLoader> class_loader) { |
| 5953 | ArtMethod* resolved = dex_cache->GetResolvedMethod(method_idx, image_pointer_size_); |
| 5954 | if (resolved != nullptr && !resolved->IsRuntimeMethod()) { |
| 5955 | DCHECK(resolved->GetDeclaringClassUnchecked() != nullptr) << resolved->GetDexMethodIndex(); |
| 5956 | return resolved; |
| 5957 | } |
| 5958 | // Fail, get the declaring class. |
| 5959 | const DexFile::MethodId& method_id = dex_file.GetMethodId(method_idx); |
| 5960 | mirror::Class* klass = ResolveType(dex_file, method_id.class_idx_, dex_cache, class_loader); |
| 5961 | if (klass == nullptr) { |
| 5962 | Thread::Current()->AssertPendingException(); |
| 5963 | return nullptr; |
| 5964 | } |
| 5965 | if (klass->IsInterface()) { |
| 5966 | LOG(FATAL) << "ResolveAmbiguousMethod: unexpected method in interface: " << PrettyClass(klass); |
| 5967 | return nullptr; |
| 5968 | } |
| 5969 | |
| 5970 | // Search both direct and virtual methods |
| 5971 | resolved = klass->FindDirectMethod(dex_cache.Get(), method_idx, image_pointer_size_); |
| 5972 | if (resolved == nullptr) { |
| 5973 | resolved = klass->FindVirtualMethod(dex_cache.Get(), method_idx, image_pointer_size_); |
| 5974 | } |
| 5975 | |
| 5976 | return resolved; |
| 5977 | } |
| 5978 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 5979 | ArtField* ClassLinker::ResolveField(const DexFile& dex_file, |
| 5980 | uint32_t field_idx, |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 5981 | Handle<mirror::DexCache> dex_cache, |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 5982 | Handle<mirror::ClassLoader> class_loader, |
| 5983 | bool is_static) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 5984 | DCHECK(dex_cache.Get() != nullptr); |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 5985 | ArtField* resolved = dex_cache->GetResolvedField(field_idx, image_pointer_size_); |
Andreas Gampe | 58a5af8 | 2014-07-31 16:23:49 -0700 | [diff] [blame] | 5986 | if (resolved != nullptr) { |
Brian Carlstrom | 9ea1cb1 | 2011-08-24 23:18:18 -0700 | [diff] [blame] | 5987 | return resolved; |
| 5988 | } |
| 5989 | const DexFile::FieldId& field_id = dex_file.GetFieldId(field_idx); |
Mathieu Chartier | f832284 | 2014-05-16 10:59:25 -0700 | [diff] [blame] | 5990 | Thread* const self = Thread::Current(); |
| 5991 | StackHandleScope<1> hs(self); |
| 5992 | Handle<mirror::Class> klass( |
| 5993 | hs.NewHandle(ResolveType(dex_file, field_id.class_idx_, dex_cache, class_loader))); |
Andreas Gampe | 58a5af8 | 2014-07-31 16:23:49 -0700 | [diff] [blame] | 5994 | if (klass.Get() == nullptr) { |
Ian Rogers | 9f1ab12 | 2011-12-12 08:52:43 -0800 | [diff] [blame] | 5995 | DCHECK(Thread::Current()->IsExceptionPending()); |
Andreas Gampe | 58a5af8 | 2014-07-31 16:23:49 -0700 | [diff] [blame] | 5996 | return nullptr; |
Brian Carlstrom | 9ea1cb1 | 2011-08-24 23:18:18 -0700 | [diff] [blame] | 5997 | } |
| 5998 | |
Brian Carlstrom | 20cfffa | 2011-08-26 02:31:27 -0700 | [diff] [blame] | 5999 | if (is_static) { |
Mathieu Chartier | f832284 | 2014-05-16 10:59:25 -0700 | [diff] [blame] | 6000 | resolved = mirror::Class::FindStaticField(self, klass, dex_cache.Get(), field_idx); |
Brian Carlstrom | 20cfffa | 2011-08-26 02:31:27 -0700 | [diff] [blame] | 6001 | } else { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 6002 | resolved = klass->FindInstanceField(dex_cache.Get(), field_idx); |
Brian Carlstrom | 20cfffa | 2011-08-26 02:31:27 -0700 | [diff] [blame] | 6003 | } |
Ian Rogers | 7b0c5b4 | 2012-02-16 15:29:07 -0800 | [diff] [blame] | 6004 | |
Andreas Gampe | 58a5af8 | 2014-07-31 16:23:49 -0700 | [diff] [blame] | 6005 | if (resolved == nullptr) { |
Ian Rogers | 7b0c5b4 | 2012-02-16 15:29:07 -0800 | [diff] [blame] | 6006 | const char* name = dex_file.GetFieldName(field_id); |
| 6007 | const char* type = dex_file.GetFieldTypeDescriptor(field_id); |
| 6008 | if (is_static) { |
Mathieu Chartier | f832284 | 2014-05-16 10:59:25 -0700 | [diff] [blame] | 6009 | resolved = mirror::Class::FindStaticField(self, klass, name, type); |
Ian Rogers | 7b0c5b4 | 2012-02-16 15:29:07 -0800 | [diff] [blame] | 6010 | } else { |
| 6011 | resolved = klass->FindInstanceField(name, type); |
| 6012 | } |
Andreas Gampe | 58a5af8 | 2014-07-31 16:23:49 -0700 | [diff] [blame] | 6013 | if (resolved == nullptr) { |
Mathieu Chartier | f832284 | 2014-05-16 10:59:25 -0700 | [diff] [blame] | 6014 | ThrowNoSuchFieldError(is_static ? "static " : "instance ", klass.Get(), type, name); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 6015 | return nullptr; |
Ian Rogers | 7b0c5b4 | 2012-02-16 15:29:07 -0800 | [diff] [blame] | 6016 | } |
Ian Rogers | b067ac2 | 2011-12-13 18:05:09 -0800 | [diff] [blame] | 6017 | } |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 6018 | dex_cache->SetResolvedField(field_idx, resolved, image_pointer_size_); |
Ian Rogers | b067ac2 | 2011-12-13 18:05:09 -0800 | [diff] [blame] | 6019 | return resolved; |
| 6020 | } |
| 6021 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 6022 | ArtField* ClassLinker::ResolveFieldJLS(const DexFile& dex_file, |
| 6023 | uint32_t field_idx, |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 6024 | Handle<mirror::DexCache> dex_cache, |
| 6025 | Handle<mirror::ClassLoader> class_loader) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 6026 | DCHECK(dex_cache.Get() != nullptr); |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 6027 | ArtField* resolved = dex_cache->GetResolvedField(field_idx, image_pointer_size_); |
Andreas Gampe | 58a5af8 | 2014-07-31 16:23:49 -0700 | [diff] [blame] | 6028 | if (resolved != nullptr) { |
Ian Rogers | b067ac2 | 2011-12-13 18:05:09 -0800 | [diff] [blame] | 6029 | return resolved; |
| 6030 | } |
| 6031 | const DexFile::FieldId& field_id = dex_file.GetFieldId(field_idx); |
Mathieu Chartier | f832284 | 2014-05-16 10:59:25 -0700 | [diff] [blame] | 6032 | Thread* self = Thread::Current(); |
| 6033 | StackHandleScope<1> hs(self); |
| 6034 | Handle<mirror::Class> klass( |
| 6035 | hs.NewHandle(ResolveType(dex_file, field_id.class_idx_, dex_cache, class_loader))); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 6036 | if (klass.Get() == nullptr) { |
Ian Rogers | b067ac2 | 2011-12-13 18:05:09 -0800 | [diff] [blame] | 6037 | DCHECK(Thread::Current()->IsExceptionPending()); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 6038 | return nullptr; |
Ian Rogers | b067ac2 | 2011-12-13 18:05:09 -0800 | [diff] [blame] | 6039 | } |
| 6040 | |
Ian Rogers | dfb325e | 2013-10-30 01:00:44 -0700 | [diff] [blame] | 6041 | StringPiece name(dex_file.StringDataByIdx(field_id.name_idx_)); |
| 6042 | StringPiece type(dex_file.StringDataByIdx( |
Ian Rogers | fc0e94b | 2013-09-23 23:51:32 -0700 | [diff] [blame] | 6043 | dex_file.GetTypeId(field_id.type_idx_).descriptor_idx_)); |
Mathieu Chartier | f832284 | 2014-05-16 10:59:25 -0700 | [diff] [blame] | 6044 | resolved = mirror::Class::FindField(self, klass, name, type); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 6045 | if (resolved != nullptr) { |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 6046 | dex_cache->SetResolvedField(field_idx, resolved, image_pointer_size_); |
Ian Rogers | b067ac2 | 2011-12-13 18:05:09 -0800 | [diff] [blame] | 6047 | } else { |
Mathieu Chartier | f832284 | 2014-05-16 10:59:25 -0700 | [diff] [blame] | 6048 | ThrowNoSuchFieldError("", klass.Get(), type, name); |
Brian Carlstrom | 9ea1cb1 | 2011-08-24 23:18:18 -0700 | [diff] [blame] | 6049 | } |
| 6050 | return resolved; |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 6051 | } |
| 6052 | |
Mathieu Chartier | c77f3ab | 2015-09-03 19:41:50 -0700 | [diff] [blame] | 6053 | const char* ClassLinker::MethodShorty(uint32_t method_idx, |
| 6054 | ArtMethod* referrer, |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 6055 | uint32_t* length) { |
| 6056 | mirror::Class* declaring_class = referrer->GetDeclaringClass(); |
| 6057 | mirror::DexCache* dex_cache = declaring_class->GetDexCache(); |
Ian Rogers | 4445a7e | 2012-10-05 17:19:13 -0700 | [diff] [blame] | 6058 | const DexFile& dex_file = *dex_cache->GetDexFile(); |
Ian Rogers | ad25ac5 | 2011-10-04 19:13:33 -0700 | [diff] [blame] | 6059 | const DexFile::MethodId& method_id = dex_file.GetMethodId(method_idx); |
Ian Rogers | 1984651 | 2012-02-24 11:42:47 -0800 | [diff] [blame] | 6060 | return dex_file.GetMethodShorty(method_id, length); |
Ian Rogers | ad25ac5 | 2011-10-04 19:13:33 -0700 | [diff] [blame] | 6061 | } |
| 6062 | |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 6063 | class DumpClassVisitor : public ClassVisitor { |
| 6064 | public: |
| 6065 | explicit DumpClassVisitor(int flags) : flags_(flags) {} |
| 6066 | |
| 6067 | bool Visit(mirror::Class* klass) OVERRIDE SHARED_REQUIRES(Locks::mutator_lock_) { |
| 6068 | klass->DumpClass(LOG(ERROR), flags_); |
| 6069 | return true; |
| 6070 | } |
| 6071 | |
| 6072 | private: |
| 6073 | const int flags_; |
| 6074 | }; |
Elliott Hughes | 9d5ccec | 2011-09-19 13:19:50 -0700 | [diff] [blame] | 6075 | |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 6076 | void ClassLinker::DumpAllClasses(int flags) { |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 6077 | DumpClassVisitor visitor(flags); |
| 6078 | VisitClasses(&visitor); |
Elliott Hughes | 9d5ccec | 2011-09-19 13:19:50 -0700 | [diff] [blame] | 6079 | } |
| 6080 | |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 6081 | static OatFile::OatMethod CreateOatMethod(const void* code) { |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 6082 | CHECK(code != nullptr); |
Mathieu Chartier | 957ca1c | 2014-11-21 16:51:29 -0800 | [diff] [blame] | 6083 | const uint8_t* base = reinterpret_cast<const uint8_t*>(code); // Base of data points at code. |
| 6084 | base -= sizeof(void*); // Move backward so that code_offset != 0. |
| 6085 | const uint32_t code_offset = sizeof(void*); |
| 6086 | return OatFile::OatMethod(base, code_offset); |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 6087 | } |
| 6088 | |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 6089 | bool ClassLinker::IsQuickResolutionStub(const void* entry_point) const { |
| 6090 | return (entry_point == GetQuickResolutionStub()) || |
| 6091 | (quick_resolution_trampoline_ == entry_point); |
| 6092 | } |
| 6093 | |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 6094 | bool ClassLinker::IsQuickToInterpreterBridge(const void* entry_point) const { |
| 6095 | return (entry_point == GetQuickToInterpreterBridge()) || |
| 6096 | (quick_to_interpreter_bridge_trampoline_ == entry_point); |
| 6097 | } |
| 6098 | |
| 6099 | bool ClassLinker::IsQuickGenericJniStub(const void* entry_point) const { |
| 6100 | return (entry_point == GetQuickGenericJniStub()) || |
| 6101 | (quick_generic_jni_trampoline_ == entry_point); |
| 6102 | } |
| 6103 | |
| 6104 | const void* ClassLinker::GetRuntimeQuickGenericJniStub() const { |
| 6105 | return GetQuickGenericJniStub(); |
| 6106 | } |
| 6107 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 6108 | void ClassLinker::SetEntryPointsToCompiledCode(ArtMethod* method, |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 6109 | const void* method_code) const { |
| 6110 | OatFile::OatMethod oat_method = CreateOatMethod(method_code); |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 6111 | oat_method.LinkMethod(method); |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 6112 | } |
| 6113 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 6114 | void ClassLinker::SetEntryPointsToInterpreter(ArtMethod* method) const { |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 6115 | if (!method->IsNative()) { |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 6116 | method->SetEntryPointFromQuickCompiledCode(GetQuickToInterpreterBridge()); |
| 6117 | } else { |
| 6118 | const void* quick_method_code = GetQuickGenericJniStub(); |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 6119 | OatFile::OatMethod oat_method = CreateOatMethod(quick_method_code); |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 6120 | oat_method.LinkMethod(method); |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 6121 | } |
| 6122 | } |
| 6123 | |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 6124 | void ClassLinker::DumpForSigQuit(std::ostream& os) { |
Mathieu Chartier | 6b06953 | 2015-08-05 15:08:12 -0700 | [diff] [blame] | 6125 | ScopedObjectAccess soa(Thread::Current()); |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 6126 | if (dex_cache_image_class_lookup_required_) { |
| 6127 | MoveImageClassesToClassTable(); |
| 6128 | } |
Mathieu Chartier | 6b06953 | 2015-08-05 15:08:12 -0700 | [diff] [blame] | 6129 | ReaderMutexLock mu(soa.Self(), *Locks::classlinker_classes_lock_); |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 6130 | os << "Zygote loaded classes=" << NumZygoteClasses() << " post zygote classes=" |
| 6131 | << NumNonZygoteClasses() << "\n"; |
| 6132 | } |
| 6133 | |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 6134 | class CountClassesVisitor : public ClassLoaderVisitor { |
| 6135 | public: |
| 6136 | CountClassesVisitor() : num_zygote_classes(0), num_non_zygote_classes(0) {} |
| 6137 | |
| 6138 | void Visit(mirror::ClassLoader* class_loader) |
| 6139 | SHARED_REQUIRES(Locks::classlinker_classes_lock_, Locks::mutator_lock_) OVERRIDE { |
| 6140 | ClassTable* const class_table = class_loader->GetClassTable(); |
Mathieu Chartier | 6b06953 | 2015-08-05 15:08:12 -0700 | [diff] [blame] | 6141 | if (class_table != nullptr) { |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 6142 | num_zygote_classes += class_table->NumZygoteClasses(); |
| 6143 | num_non_zygote_classes += class_table->NumNonZygoteClasses(); |
Mathieu Chartier | 6b06953 | 2015-08-05 15:08:12 -0700 | [diff] [blame] | 6144 | } |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 6145 | } |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 6146 | |
| 6147 | size_t num_zygote_classes; |
| 6148 | size_t num_non_zygote_classes; |
| 6149 | }; |
| 6150 | |
| 6151 | size_t ClassLinker::NumZygoteClasses() const { |
| 6152 | CountClassesVisitor visitor; |
| 6153 | VisitClassLoaders(&visitor); |
| 6154 | return visitor.num_zygote_classes + boot_class_table_.NumZygoteClasses(); |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 6155 | } |
| 6156 | |
| 6157 | size_t ClassLinker::NumNonZygoteClasses() const { |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 6158 | CountClassesVisitor visitor; |
| 6159 | VisitClassLoaders(&visitor); |
| 6160 | return visitor.num_non_zygote_classes + boot_class_table_.NumNonZygoteClasses(); |
Elliott Hughes | cac6cc7 | 2011-11-03 20:31:21 -0700 | [diff] [blame] | 6161 | } |
| 6162 | |
Ian Rogers | 7dfb28c | 2013-08-22 08:18:36 -0700 | [diff] [blame] | 6163 | size_t ClassLinker::NumLoadedClasses() { |
| 6164 | if (dex_cache_image_class_lookup_required_) { |
| 6165 | MoveImageClassesToClassTable(); |
| 6166 | } |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 6167 | ReaderMutexLock mu(Thread::Current(), *Locks::classlinker_classes_lock_); |
Mathieu Chartier | c2e2062 | 2014-11-03 11:41:47 -0800 | [diff] [blame] | 6168 | // Only return non zygote classes since these are the ones which apps which care about. |
Mathieu Chartier | cc5ebdf | 2015-07-27 11:19:43 -0700 | [diff] [blame] | 6169 | return NumNonZygoteClasses(); |
Elliott Hughes | e27955c | 2011-08-26 15:21:24 -0700 | [diff] [blame] | 6170 | } |
| 6171 | |
Brian Carlstrom | 47d237a | 2011-10-18 15:08:33 -0700 | [diff] [blame] | 6172 | pid_t ClassLinker::GetClassesLockOwner() { |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 6173 | return Locks::classlinker_classes_lock_->GetExclusiveOwnerTid(); |
Brian Carlstrom | 47d237a | 2011-10-18 15:08:33 -0700 | [diff] [blame] | 6174 | } |
| 6175 | |
| 6176 | pid_t ClassLinker::GetDexLockOwner() { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 6177 | return dex_lock_.GetExclusiveOwnerTid(); |
Brian Carlstrom | 24a3c2e | 2011-10-17 18:07:52 -0700 | [diff] [blame] | 6178 | } |
| 6179 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 6180 | void ClassLinker::SetClassRoot(ClassRoot class_root, mirror::Class* klass) { |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 6181 | DCHECK(!init_done_); |
| 6182 | |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 6183 | DCHECK(klass != nullptr); |
| 6184 | DCHECK(klass->GetClassLoader() == nullptr); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 6185 | |
Hiroshi Yamauchi | 94f7b49 | 2014-07-22 18:08:23 -0700 | [diff] [blame] | 6186 | mirror::ObjectArray<mirror::Class>* class_roots = class_roots_.Read(); |
Andreas Gampe | 2ed8def | 2014-08-28 14:41:02 -0700 | [diff] [blame] | 6187 | DCHECK(class_roots != nullptr); |
| 6188 | DCHECK(class_roots->Get(class_root) == nullptr); |
Hiroshi Yamauchi | e9e3e69 | 2014-06-24 14:31:37 -0700 | [diff] [blame] | 6189 | class_roots->Set<false>(class_root, klass); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 6190 | } |
| 6191 | |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 6192 | const char* ClassLinker::GetClassRootDescriptor(ClassRoot class_root) { |
| 6193 | static const char* class_roots_descriptors[] = { |
| 6194 | "Ljava/lang/Class;", |
| 6195 | "Ljava/lang/Object;", |
| 6196 | "[Ljava/lang/Class;", |
| 6197 | "[Ljava/lang/Object;", |
| 6198 | "Ljava/lang/String;", |
| 6199 | "Ljava/lang/DexCache;", |
| 6200 | "Ljava/lang/ref/Reference;", |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 6201 | "Ljava/lang/reflect/Constructor;", |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 6202 | "Ljava/lang/reflect/Field;", |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 6203 | "Ljava/lang/reflect/Method;", |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 6204 | "Ljava/lang/reflect/Proxy;", |
| 6205 | "[Ljava/lang/String;", |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 6206 | "[Ljava/lang/reflect/Constructor;", |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 6207 | "[Ljava/lang/reflect/Field;", |
Mathieu Chartier | fc58af4 | 2015-04-16 18:00:39 -0700 | [diff] [blame] | 6208 | "[Ljava/lang/reflect/Method;", |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 6209 | "Ljava/lang/ClassLoader;", |
| 6210 | "Ljava/lang/Throwable;", |
| 6211 | "Ljava/lang/ClassNotFoundException;", |
| 6212 | "Ljava/lang/StackTraceElement;", |
| 6213 | "Z", |
| 6214 | "B", |
| 6215 | "C", |
| 6216 | "D", |
| 6217 | "F", |
| 6218 | "I", |
| 6219 | "J", |
| 6220 | "S", |
| 6221 | "V", |
| 6222 | "[Z", |
| 6223 | "[B", |
| 6224 | "[C", |
| 6225 | "[D", |
| 6226 | "[F", |
| 6227 | "[I", |
| 6228 | "[J", |
| 6229 | "[S", |
| 6230 | "[Ljava/lang/StackTraceElement;", |
| 6231 | }; |
Andreas Gampe | 575e78c | 2014-11-03 23:41:03 -0800 | [diff] [blame] | 6232 | static_assert(arraysize(class_roots_descriptors) == size_t(kClassRootsMax), |
| 6233 | "Mismatch between class descriptors and class-root enum"); |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 6234 | |
| 6235 | const char* descriptor = class_roots_descriptors[class_root]; |
| 6236 | CHECK(descriptor != nullptr); |
| 6237 | return descriptor; |
| 6238 | } |
| 6239 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 6240 | bool ClassLinker::MayBeCalledWithDirectCodePointer(ArtMethod* m) { |
Mathieu Chartier | f9c6fc6 | 2015-10-07 11:44:05 -0700 | [diff] [blame] | 6241 | Runtime* const runtime = Runtime::Current(); |
| 6242 | if (runtime->UseJit()) { |
Mathieu Chartier | d856545 | 2015-03-26 09:41:50 -0700 | [diff] [blame] | 6243 | // JIT can have direct code pointers from any method to any other method. |
| 6244 | return true; |
| 6245 | } |
Sebastien Hertz | 6963e44 | 2014-11-26 22:11:27 +0100 | [diff] [blame] | 6246 | // Non-image methods don't use direct code pointer. |
| 6247 | if (!m->GetDeclaringClass()->IsBootStrapClassLoaded()) { |
| 6248 | return false; |
| 6249 | } |
| 6250 | if (m->IsPrivate()) { |
| 6251 | // The method can only be called inside its own oat file. Therefore it won't be called using |
| 6252 | // its direct code if the oat file has been compiled in PIC mode. |
Sebastien Hertz | 6963e44 | 2014-11-26 22:11:27 +0100 | [diff] [blame] | 6253 | const DexFile& dex_file = m->GetDeclaringClass()->GetDexFile(); |
Richard Uhler | 07b3c23 | 2015-03-31 15:57:54 -0700 | [diff] [blame] | 6254 | const OatFile::OatDexFile* oat_dex_file = dex_file.GetOatDexFile(); |
Sebastien Hertz | 6963e44 | 2014-11-26 22:11:27 +0100 | [diff] [blame] | 6255 | if (oat_dex_file == nullptr) { |
| 6256 | // No oat file: the method has not been compiled. |
| 6257 | return false; |
| 6258 | } |
| 6259 | const OatFile* oat_file = oat_dex_file->GetOatFile(); |
| 6260 | return oat_file != nullptr && !oat_file->IsPic(); |
| 6261 | } else { |
| 6262 | // The method can be called outside its own oat file. Therefore it won't be called using its |
| 6263 | // direct code pointer only if all loaded oat files have been compiled in PIC mode. |
Mathieu Chartier | f9c6fc6 | 2015-10-07 11:44:05 -0700 | [diff] [blame] | 6264 | return runtime->GetOatFileManager().HaveNonPicOatFile(); |
Sebastien Hertz | 6963e44 | 2014-11-26 22:11:27 +0100 | [diff] [blame] | 6265 | } |
| 6266 | } |
| 6267 | |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 6268 | jobject ClassLinker::CreatePathClassLoader(Thread* self, std::vector<const DexFile*>& dex_files) { |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 6269 | // SOAAlreadyRunnable is protected, and we need something to add a global reference. |
| 6270 | // We could move the jobject to the callers, but all call-sites do this... |
| 6271 | ScopedObjectAccessUnchecked soa(self); |
| 6272 | |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 6273 | // For now, create a libcore-level DexFile for each ART DexFile. This "explodes" multidex. |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 6274 | StackHandleScope<10> hs(self); |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 6275 | |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 6276 | ArtField* dex_elements_field = |
| 6277 | soa.DecodeField(WellKnownClasses::dalvik_system_DexPathList_dexElements); |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 6278 | |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 6279 | mirror::Class* dex_elements_class = dex_elements_field->GetType<true>(); |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 6280 | DCHECK(dex_elements_class != nullptr); |
| 6281 | DCHECK(dex_elements_class->IsArrayClass()); |
Mathieu Chartier | daaf326 | 2015-03-24 13:30:28 -0700 | [diff] [blame] | 6282 | Handle<mirror::ObjectArray<mirror::Object>> h_dex_elements(hs.NewHandle( |
| 6283 | mirror::ObjectArray<mirror::Object>::Alloc(self, dex_elements_class, dex_files.size()))); |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 6284 | Handle<mirror::Class> h_dex_element_class = |
| 6285 | hs.NewHandle(dex_elements_class->GetComponentType()); |
| 6286 | |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 6287 | ArtField* element_file_field = |
| 6288 | soa.DecodeField(WellKnownClasses::dalvik_system_DexPathList__Element_dexFile); |
| 6289 | DCHECK_EQ(h_dex_element_class.Get(), element_file_field->GetDeclaringClass()); |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 6290 | |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 6291 | ArtField* cookie_field = soa.DecodeField(WellKnownClasses::dalvik_system_DexFile_cookie); |
| 6292 | DCHECK_EQ(cookie_field->GetDeclaringClass(), element_file_field->GetType<false>()); |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 6293 | |
| 6294 | // Fill the elements array. |
| 6295 | int32_t index = 0; |
| 6296 | for (const DexFile* dex_file : dex_files) { |
| 6297 | StackHandleScope<3> hs2(self); |
| 6298 | |
Mathieu Chartier | e58991b | 2015-10-13 07:59:34 -0700 | [diff] [blame] | 6299 | // CreatePathClassLoader is only used by gtests. Index 0 of h_long_array is supposed to be the |
| 6300 | // oat file but we can leave it null. |
| 6301 | Handle<mirror::LongArray> h_long_array = hs2.NewHandle(mirror::LongArray::Alloc( |
| 6302 | self, |
| 6303 | kDexFileIndexStart + 1)); |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 6304 | DCHECK(h_long_array.Get() != nullptr); |
Mathieu Chartier | e58991b | 2015-10-13 07:59:34 -0700 | [diff] [blame] | 6305 | h_long_array->Set(kDexFileIndexStart, reinterpret_cast<intptr_t>(dex_file)); |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 6306 | |
| 6307 | Handle<mirror::Object> h_dex_file = hs2.NewHandle( |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 6308 | cookie_field->GetDeclaringClass()->AllocObject(self)); |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 6309 | DCHECK(h_dex_file.Get() != nullptr); |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 6310 | cookie_field->SetObject<false>(h_dex_file.Get(), h_long_array.Get()); |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 6311 | |
| 6312 | Handle<mirror::Object> h_element = hs2.NewHandle(h_dex_element_class->AllocObject(self)); |
| 6313 | DCHECK(h_element.Get() != nullptr); |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 6314 | element_file_field->SetObject<false>(h_element.Get(), h_dex_file.Get()); |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 6315 | |
| 6316 | h_dex_elements->Set(index, h_element.Get()); |
| 6317 | index++; |
| 6318 | } |
| 6319 | DCHECK_EQ(index, h_dex_elements->GetLength()); |
| 6320 | |
| 6321 | // Create DexPathList. |
| 6322 | Handle<mirror::Object> h_dex_path_list = hs.NewHandle( |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 6323 | dex_elements_field->GetDeclaringClass()->AllocObject(self)); |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 6324 | DCHECK(h_dex_path_list.Get() != nullptr); |
| 6325 | // Set elements. |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 6326 | dex_elements_field->SetObject<false>(h_dex_path_list.Get(), h_dex_elements.Get()); |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 6327 | |
| 6328 | // Create PathClassLoader. |
| 6329 | Handle<mirror::Class> h_path_class_class = hs.NewHandle( |
| 6330 | soa.Decode<mirror::Class*>(WellKnownClasses::dalvik_system_PathClassLoader)); |
| 6331 | Handle<mirror::Object> h_path_class_loader = hs.NewHandle( |
| 6332 | h_path_class_class->AllocObject(self)); |
| 6333 | DCHECK(h_path_class_loader.Get() != nullptr); |
| 6334 | // Set DexPathList. |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 6335 | ArtField* path_list_field = |
| 6336 | soa.DecodeField(WellKnownClasses::dalvik_system_PathClassLoader_pathList); |
| 6337 | DCHECK(path_list_field != nullptr); |
| 6338 | path_list_field->SetObject<false>(h_path_class_loader.Get(), h_dex_path_list.Get()); |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 6339 | |
| 6340 | // Make a pretend boot-classpath. |
| 6341 | // TODO: Should we scan the image? |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 6342 | ArtField* const parent_field = |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 6343 | mirror::Class::FindField(self, hs.NewHandle(h_path_class_loader->GetClass()), "parent", |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 6344 | "Ljava/lang/ClassLoader;"); |
Roland Levillain | f39c9eb | 2015-05-26 15:02:07 +0100 | [diff] [blame] | 6345 | DCHECK(parent_field != nullptr); |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 6346 | mirror::Object* boot_cl = |
| 6347 | soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_BootClassLoader)->AllocObject(self); |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 6348 | parent_field->SetObject<false>(h_path_class_loader.Get(), boot_cl); |
Andreas Gampe | 81c6f8d | 2015-03-25 17:19:53 -0700 | [diff] [blame] | 6349 | |
| 6350 | // Make it a global ref and return. |
| 6351 | ScopedLocalRef<jobject> local_ref( |
| 6352 | soa.Env(), soa.Env()->AddLocalReference<jobject>(h_path_class_loader.Get())); |
| 6353 | return soa.Env()->NewGlobalRef(local_ref.get()); |
| 6354 | } |
| 6355 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 6356 | ArtMethod* ClassLinker::CreateRuntimeMethod() { |
Vladimir Marko | 1463285 | 2015-08-17 12:07:23 +0100 | [diff] [blame] | 6357 | const size_t method_alignment = ArtMethod::Alignment(image_pointer_size_); |
| 6358 | const size_t method_size = ArtMethod::Size(image_pointer_size_); |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 6359 | LengthPrefixedArray<ArtMethod>* method_array = AllocArtMethodArray( |
| 6360 | Thread::Current(), |
| 6361 | Runtime::Current()->GetLinearAlloc(), |
| 6362 | 1); |
Vladimir Marko | cf36d49 | 2015-08-12 19:27:26 +0100 | [diff] [blame] | 6363 | ArtMethod* method = &method_array->At(0, method_size, method_alignment); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 6364 | CHECK(method != nullptr); |
| 6365 | method->SetDexMethodIndex(DexFile::kDexNoIndex); |
| 6366 | CHECK(method->IsRuntimeMethod()); |
| 6367 | return method; |
| 6368 | } |
| 6369 | |
Andreas Gampe | 8ac7595 | 2015-06-02 21:01:45 -0700 | [diff] [blame] | 6370 | void ClassLinker::DropFindArrayClassCache() { |
| 6371 | std::fill_n(find_array_class_cache_, kFindArrayCacheSize, GcRoot<mirror::Class>(nullptr)); |
| 6372 | find_array_class_cache_next_victim_ = 0; |
| 6373 | } |
| 6374 | |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 6375 | void ClassLinker::VisitClassLoaders(ClassLoaderVisitor* visitor) const { |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 6376 | Thread* const self = Thread::Current(); |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 6377 | for (const ClassLoaderData& data : class_loaders_) { |
Mathieu Chartier | 4843bd5 | 2015-10-01 17:08:44 -0700 | [diff] [blame] | 6378 | // Need to use DecodeJObject so that we get null for cleared JNI weak globals. |
| 6379 | auto* const class_loader = down_cast<mirror::ClassLoader*>(self->DecodeJObject(data.weak_root)); |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 6380 | if (class_loader != nullptr) { |
| 6381 | visitor->Visit(class_loader); |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 6382 | } |
| 6383 | } |
| 6384 | } |
| 6385 | |
Mathieu Chartier | 00310e0 | 2015-10-17 12:46:42 -0700 | [diff] [blame] | 6386 | void ClassLinker::InsertDexFileInToClassLoader(mirror::Object* dex_file, |
| 6387 | mirror::ClassLoader* class_loader) { |
| 6388 | DCHECK(dex_file != nullptr); |
| 6389 | DCHECK(class_loader != nullptr); |
| 6390 | Thread* const self = Thread::Current(); |
| 6391 | WriterMutexLock mu(self, *Locks::classlinker_classes_lock_); |
| 6392 | ClassTable* const table = class_loader->GetClassTable(); |
| 6393 | DCHECK(table != nullptr); |
| 6394 | if (table->InsertDexFile(dex_file)) { |
| 6395 | // It was not already inserted, perform the write barrier to let the GC know the class loader's |
| 6396 | // class table was modified. |
| 6397 | Runtime::Current()->GetHeap()->WriteBarrierEveryFieldOf(class_loader); |
| 6398 | } |
| 6399 | } |
| 6400 | |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 6401 | void ClassLinker::CleanupClassLoaders() { |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 6402 | Thread* const self = Thread::Current(); |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 6403 | WriterMutexLock mu(self, *Locks::classlinker_classes_lock_); |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 6404 | for (auto it = class_loaders_.begin(); it != class_loaders_.end(); ) { |
| 6405 | const ClassLoaderData& data = *it; |
Mathieu Chartier | 4843bd5 | 2015-10-01 17:08:44 -0700 | [diff] [blame] | 6406 | // Need to use DecodeJObject so that we get null for cleared JNI weak globals. |
| 6407 | auto* const class_loader = down_cast<mirror::ClassLoader*>(self->DecodeJObject(data.weak_root)); |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 6408 | if (class_loader != nullptr) { |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 6409 | ++it; |
| 6410 | } else { |
Nicolas Geoffray | 1dad3f6 | 2015-10-23 14:59:54 +0100 | [diff] [blame] | 6411 | DeleteClassLoader(self, data); |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 6412 | it = class_loaders_.erase(it); |
Mathieu Chartier | 9b1c71e | 2015-09-02 18:51:54 -0700 | [diff] [blame] | 6413 | } |
| 6414 | } |
| 6415 | } |
| 6416 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 6417 | } // namespace art |