Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [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 | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 16 | |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 17 | #include "thread.h" |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 18 | |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 19 | #include <dynamic_annotations.h> |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 20 | #include <pthread.h> |
Elliott Hughes | 2acf36d | 2012-04-17 13:30:13 -0700 | [diff] [blame] | 21 | #include <signal.h> |
Brian Carlstrom | dbf05b7 | 2011-12-15 00:55:24 -0800 | [diff] [blame] | 22 | #include <sys/resource.h> |
| 23 | #include <sys/time.h> |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 24 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 25 | #include <algorithm> |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 26 | #include <bitset> |
Elliott Hughes | eb4f614 | 2011-07-15 17:43:51 -0700 | [diff] [blame] | 27 | #include <cerrno> |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 28 | #include <iostream> |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 29 | #include <list> |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 30 | |
Elliott Hughes | 76b6167 | 2012-12-12 17:47:30 -0800 | [diff] [blame] | 31 | #include "base/mutex.h" |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 32 | #include "class_linker.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 33 | #include "class_linker-inl.h" |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 34 | #include "cutils/atomic.h" |
| 35 | #include "cutils/atomic-inline.h" |
Elliott Hughes | 46e251b | 2012-05-22 15:10:45 -0700 | [diff] [blame] | 36 | #include "debugger.h" |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 37 | #include "gc_map.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 38 | #include "gc/card_table-inl.h" |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 39 | #include "heap.h" |
Elliott Hughes | c5f7c91 | 2011-08-18 14:00:42 -0700 | [diff] [blame] | 40 | #include "jni_internal.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 41 | #include "mirror/abstract_method-inl.h" |
| 42 | #include "mirror/class-inl.h" |
| 43 | #include "mirror/class_loader.h" |
| 44 | #include "mirror/object-inl.h" |
| 45 | #include "mirror/object_array-inl.h" |
| 46 | #include "mirror/stack_trace_element.h" |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 47 | #include "monitor.h" |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 48 | #include "oat/runtime/context.h" |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 49 | #include "object_utils.h" |
Jesse Wilson | 9a6bae8 | 2011-11-14 14:57:30 -0500 | [diff] [blame] | 50 | #include "reflection.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 51 | #include "runtime.h" |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 52 | #include "runtime_support.h" |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 53 | #include "scoped_thread_state_change.h" |
Elliott Hughes | 46e251b | 2012-05-22 15:10:45 -0700 | [diff] [blame] | 54 | #include "ScopedLocalRef.h" |
Ian Rogers | 1f53934 | 2012-10-03 21:09:42 -0700 | [diff] [blame] | 55 | #include "sirt_ref.h" |
Mathieu Chartier | 7469ebf | 2012-09-24 16:28:36 -0700 | [diff] [blame] | 56 | #include "gc/space.h" |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 57 | #include "stack.h" |
| 58 | #include "stack_indirect_reference_table.h" |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 59 | #include "thread_list.h" |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 60 | #include "utils.h" |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 61 | #include "verifier/dex_gc_map.h" |
Elliott Hughes | eac7667 | 2012-05-24 21:56:51 -0700 | [diff] [blame] | 62 | #include "well_known_classes.h" |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 63 | |
| 64 | namespace art { |
| 65 | |
| 66 | pthread_key_t Thread::pthread_key_self_; |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 67 | ConditionVariable* Thread::resume_cond_; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 68 | |
Elliott Hughes | 7dc5166 | 2012-05-16 14:48:43 -0700 | [diff] [blame] | 69 | static const char* kThreadNameDuringStartup = "<native thread without managed peer>"; |
| 70 | |
Ian Rogers | 5d76c43 | 2011-10-31 21:42:49 -0700 | [diff] [blame] | 71 | void Thread::InitCardTable() { |
Elliott Hughes | b3bd5f0 | 2012-03-08 21:05:27 -0800 | [diff] [blame] | 72 | card_table_ = Runtime::Current()->GetHeap()->GetCardTable()->GetBiasedBegin(); |
Ian Rogers | 5d76c43 | 2011-10-31 21:42:49 -0700 | [diff] [blame] | 73 | } |
| 74 | |
Elliott Hughes | 99250ba | 2012-04-17 11:09:17 -0700 | [diff] [blame] | 75 | #if !defined(__APPLE__) |
Elliott Hughes | 3ea0f42 | 2012-04-16 17:01:43 -0700 | [diff] [blame] | 76 | static void UnimplementedEntryPoint() { |
| 77 | UNIMPLEMENTED(FATAL); |
| 78 | } |
Elliott Hughes | 99250ba | 2012-04-17 11:09:17 -0700 | [diff] [blame] | 79 | #endif |
Elliott Hughes | 3ea0f42 | 2012-04-16 17:01:43 -0700 | [diff] [blame] | 80 | |
buzbee | 3ea4ec5 | 2011-08-22 17:37:19 -0700 | [diff] [blame] | 81 | void Thread::InitFunctionPointers() { |
Elliott Hughes | 99250ba | 2012-04-17 11:09:17 -0700 | [diff] [blame] | 82 | #if !defined(__APPLE__) // The Mac GCC is too old to accept this code. |
Elliott Hughes | 3ea0f42 | 2012-04-16 17:01:43 -0700 | [diff] [blame] | 83 | // Insert a placeholder so we can easily tell if we call an unimplemented entry point. |
| 84 | uintptr_t* begin = reinterpret_cast<uintptr_t*>(&entrypoints_); |
| 85 | uintptr_t* end = reinterpret_cast<uintptr_t*>(reinterpret_cast<uint8_t*>(begin) + sizeof(entrypoints_)); |
| 86 | for (uintptr_t* it = begin; it != end; ++it) { |
| 87 | *it = reinterpret_cast<uintptr_t>(UnimplementedEntryPoint); |
| 88 | } |
Elliott Hughes | 99250ba | 2012-04-17 11:09:17 -0700 | [diff] [blame] | 89 | #endif |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 90 | InitEntryPoints(&entrypoints_); |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 91 | } |
| 92 | |
| 93 | void Thread::SetDebuggerUpdatesEnabled(bool enabled) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 94 | #if !defined(ART_USE_LLVM_COMPILER) |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 95 | ChangeDebuggerEntryPoint(&entrypoints_, enabled); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 96 | #else |
| 97 | UNIMPLEMENTED(FATAL); |
| 98 | #endif |
buzbee | 3ea4ec5 | 2011-08-22 17:37:19 -0700 | [diff] [blame] | 99 | } |
| 100 | |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 101 | |
| 102 | void Thread::SetDeoptimizationShadowFrame(ShadowFrame* sf, const JValue& ret_val) { |
| 103 | CHECK(sf != NULL); |
| 104 | deoptimization_shadow_frame_ = sf; |
| 105 | deoptimization_return_value_.SetJ(ret_val.GetJ()); |
| 106 | } |
| 107 | |
| 108 | ShadowFrame* Thread::GetAndClearDeoptimizationShadowFrame(JValue* ret_val) { |
| 109 | ShadowFrame* sf = deoptimization_shadow_frame_; |
| 110 | DCHECK(sf != NULL); |
| 111 | deoptimization_shadow_frame_ = NULL; |
| 112 | ret_val->SetJ(deoptimization_return_value_.GetJ()); |
| 113 | return sf; |
| 114 | } |
| 115 | |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 116 | void Thread::InitTid() { |
| 117 | tid_ = ::art::GetTid(); |
| 118 | } |
| 119 | |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 120 | void Thread::InitAfterFork() { |
Elliott Hughes | 8029cbe | 2012-05-22 09:13:08 -0700 | [diff] [blame] | 121 | // One thread (us) survived the fork, but we have a new tid so we need to |
| 122 | // update the value stashed in this Thread*. |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 123 | InitTid(); |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 124 | } |
| 125 | |
Brian Carlstrom | 78128a6 | 2011-09-15 17:21:19 -0700 | [diff] [blame] | 126 | void* Thread::CreateCallback(void* arg) { |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 127 | Thread* self = reinterpret_cast<Thread*>(arg); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 128 | Runtime* runtime = Runtime::Current(); |
| 129 | if (runtime == NULL) { |
| 130 | LOG(ERROR) << "Thread attaching to non-existent runtime: " << *self; |
| 131 | return NULL; |
| 132 | } |
| 133 | { |
Ian Rogers | 50b35e2 | 2012-10-04 10:09:15 -0700 | [diff] [blame] | 134 | // TODO: pass self to MutexLock - requires self to equal Thread::Current(), which is only true |
| 135 | // after self->Init(). |
| 136 | MutexLock mu(NULL, *Locks::runtime_shutdown_lock_); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 137 | // Check that if we got here we cannot be shutting down (as shutdown should never have started |
| 138 | // while threads are being born). |
| 139 | CHECK(!runtime->IsShuttingDown()); |
| 140 | self->Init(runtime->GetThreadList(), runtime->GetJavaVM()); |
| 141 | Runtime::Current()->EndThreadBirth(); |
| 142 | } |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 143 | { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 144 | ScopedObjectAccess soa(self); |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 145 | |
| 146 | // Copy peer into self, deleting global reference when done. |
| 147 | CHECK(self->jpeer_ != NULL); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 148 | self->opeer_ = soa.Decode<mirror::Object*>(self->jpeer_); |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 149 | self->GetJniEnv()->DeleteGlobalRef(self->jpeer_); |
| 150 | self->jpeer_ = NULL; |
| 151 | |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 152 | { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 153 | SirtRef<mirror::String> thread_name(self, self->GetThreadName(soa)); |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 154 | self->SetThreadName(thread_name->ToModifiedUtf8().c_str()); |
| 155 | } |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 156 | Dbg::PostThreadStart(self); |
| 157 | |
| 158 | // Invoke the 'run' method of our java.lang.Thread. |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 159 | mirror::Object* receiver = self->opeer_; |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 160 | jmethodID mid = WellKnownClasses::java_lang_Thread_run; |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 161 | mirror::AbstractMethod* m = |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 162 | receiver->GetClass()->FindVirtualMethodForVirtualOrInterface(soa.DecodeMethod(mid)); |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 163 | m->Invoke(self, receiver, NULL, NULL); |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 164 | } |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 165 | // Detach and delete self. |
| 166 | Runtime::Current()->GetThreadList()->Unregister(self); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 167 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 168 | return NULL; |
| 169 | } |
| 170 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 171 | Thread* Thread::FromManagedThread(const ScopedObjectAccessUnchecked& soa, |
| 172 | mirror::Object* thread_peer) { |
| 173 | mirror::Field* f = soa.DecodeField(WellKnownClasses::java_lang_Thread_vmData); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 174 | Thread* result = reinterpret_cast<Thread*>(static_cast<uintptr_t>(f->GetInt(thread_peer))); |
| 175 | // Sanity check that if we have a result it is either suspended or we hold the thread_list_lock_ |
| 176 | // to stop it from going away. |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 177 | if (kIsDebugBuild) { |
| 178 | MutexLock mu(soa.Self(), *Locks::thread_suspend_count_lock_); |
| 179 | if (result != NULL && !result->IsSuspended()) { |
| 180 | Locks::thread_list_lock_->AssertHeld(soa.Self()); |
| 181 | } |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 182 | } |
| 183 | return result; |
Elliott Hughes | 761928d | 2011-11-16 18:33:03 -0800 | [diff] [blame] | 184 | } |
| 185 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 186 | Thread* Thread::FromManagedThread(const ScopedObjectAccessUnchecked& soa, jobject java_thread) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 187 | return FromManagedThread(soa, soa.Decode<mirror::Object*>(java_thread)); |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 188 | } |
| 189 | |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 190 | static size_t FixStackSize(size_t stack_size) { |
Elliott Hughes | 7502e2a | 2011-10-02 13:24:37 -0700 | [diff] [blame] | 191 | // A stack size of zero means "use the default". |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 192 | if (stack_size == 0) { |
| 193 | stack_size = Runtime::Current()->GetDefaultStackSize(); |
| 194 | } |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 195 | |
Brian Carlstrom | 6414a97 | 2012-04-14 14:20:04 -0700 | [diff] [blame] | 196 | // Dalvik used the bionic pthread default stack size for native threads, |
| 197 | // so include that here to support apps that expect large native stacks. |
| 198 | stack_size += 1 * MB; |
| 199 | |
Elliott Hughes | 7502e2a | 2011-10-02 13:24:37 -0700 | [diff] [blame] | 200 | // It's not possible to request a stack smaller than the system-defined PTHREAD_STACK_MIN. |
| 201 | if (stack_size < PTHREAD_STACK_MIN) { |
| 202 | stack_size = PTHREAD_STACK_MIN; |
| 203 | } |
| 204 | |
| 205 | // It's likely that callers are trying to ensure they have at least a certain amount of |
| 206 | // stack space, so we should add our reserved space on top of what they requested, rather |
| 207 | // than implicitly take it away from them. |
| 208 | stack_size += Thread::kStackOverflowReservedBytes; |
| 209 | |
| 210 | // Some systems require the stack size to be a multiple of the system page size, so round up. |
| 211 | stack_size = RoundUp(stack_size, kPageSize); |
| 212 | |
| 213 | return stack_size; |
| 214 | } |
| 215 | |
Elliott Hughes | d8af159 | 2012-04-16 20:40:15 -0700 | [diff] [blame] | 216 | static void SigAltStack(stack_t* new_stack, stack_t* old_stack) { |
| 217 | if (sigaltstack(new_stack, old_stack) == -1) { |
| 218 | PLOG(FATAL) << "sigaltstack failed"; |
| 219 | } |
| 220 | } |
| 221 | |
| 222 | static void SetUpAlternateSignalStack() { |
| 223 | // Create and set an alternate signal stack. |
| 224 | stack_t ss; |
| 225 | ss.ss_sp = new uint8_t[SIGSTKSZ]; |
| 226 | ss.ss_size = SIGSTKSZ; |
| 227 | ss.ss_flags = 0; |
| 228 | CHECK(ss.ss_sp != NULL); |
| 229 | SigAltStack(&ss, NULL); |
| 230 | |
| 231 | // Double-check that it worked. |
| 232 | ss.ss_sp = NULL; |
| 233 | SigAltStack(NULL, &ss); |
| 234 | VLOG(threads) << "Alternate signal stack is " << PrettySize(ss.ss_size) << " at " << ss.ss_sp; |
| 235 | } |
| 236 | |
| 237 | static void TearDownAlternateSignalStack() { |
| 238 | // Get the pointer so we can free the memory. |
| 239 | stack_t ss; |
| 240 | SigAltStack(NULL, &ss); |
| 241 | uint8_t* allocated_signal_stack = reinterpret_cast<uint8_t*>(ss.ss_sp); |
| 242 | |
| 243 | // Tell the kernel to stop using it. |
| 244 | ss.ss_sp = NULL; |
| 245 | ss.ss_flags = SS_DISABLE; |
Elliott Hughes | 4c5231d | 2012-04-18 16:54:31 -0700 | [diff] [blame] | 246 | ss.ss_size = SIGSTKSZ; // Avoid ENOMEM failure with Mac OS' buggy libc. |
Elliott Hughes | d8af159 | 2012-04-16 20:40:15 -0700 | [diff] [blame] | 247 | SigAltStack(&ss, NULL); |
| 248 | |
| 249 | // Free it. |
| 250 | delete[] allocated_signal_stack; |
| 251 | } |
| 252 | |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 253 | void Thread::CreateNativeThread(JNIEnv* env, jobject java_peer, size_t stack_size, bool is_daemon) { |
Mathieu Chartier | dbe6f46 | 2012-09-25 16:54:50 -0700 | [diff] [blame] | 254 | CHECK(java_peer != NULL); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 255 | Thread* self = static_cast<JNIEnvExt*>(env)->self; |
| 256 | Runtime* runtime = Runtime::Current(); |
Mathieu Chartier | dbe6f46 | 2012-09-25 16:54:50 -0700 | [diff] [blame] | 257 | |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 258 | // Atomically start the birth of the thread ensuring the runtime isn't shutting down. |
| 259 | bool thread_start_during_shutdown = false; |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 260 | { |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 261 | MutexLock mu(self, *Locks::runtime_shutdown_lock_); |
| 262 | if (runtime->IsShuttingDown()) { |
| 263 | thread_start_during_shutdown = true; |
| 264 | } else { |
| 265 | runtime->StartThreadBirth(); |
| 266 | } |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 267 | } |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 268 | if (thread_start_during_shutdown) { |
| 269 | ScopedLocalRef<jclass> error_class(env, env->FindClass("java/lang/InternalError")); |
| 270 | env->ThrowNew(error_class.get(), "Thread starting during runtime shutdown"); |
| 271 | return; |
| 272 | } |
| 273 | |
| 274 | Thread* child_thread = new Thread(is_daemon); |
| 275 | // Use global JNI ref to hold peer live while child thread starts. |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 276 | child_thread->jpeer_ = env->NewGlobalRef(java_peer); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 277 | stack_size = FixStackSize(stack_size); |
| 278 | |
| 279 | // Thread.start is synchronized, so we know that vmData is 0, and know that we're not racing to |
| 280 | // assign it. |
| 281 | env->SetIntField(java_peer, WellKnownClasses::java_lang_Thread_vmData, |
| 282 | reinterpret_cast<jint>(child_thread)); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 283 | |
| 284 | pthread_t new_pthread; |
| 285 | pthread_attr_t attr; |
| 286 | CHECK_PTHREAD_CALL(pthread_attr_init, (&attr), "new thread"); |
| 287 | CHECK_PTHREAD_CALL(pthread_attr_setdetachstate, (&attr, PTHREAD_CREATE_DETACHED), "PTHREAD_CREATE_DETACHED"); |
| 288 | CHECK_PTHREAD_CALL(pthread_attr_setstacksize, (&attr, stack_size), stack_size); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 289 | int pthread_create_result = pthread_create(&new_pthread, &attr, Thread::CreateCallback, child_thread); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 290 | CHECK_PTHREAD_CALL(pthread_attr_destroy, (&attr), "new thread"); |
| 291 | |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 292 | if (pthread_create_result != 0) { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 293 | // pthread_create(3) failed, so clean up. |
Brian Carlstrom | 9efc3e0 | 2012-08-17 17:47:17 -0700 | [diff] [blame] | 294 | { |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 295 | MutexLock mu(self, *Locks::runtime_shutdown_lock_); |
| 296 | runtime->EndThreadBirth(); |
| 297 | } |
| 298 | // Manually delete the global reference since Thread::Init will not have been run. |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 299 | env->DeleteGlobalRef(child_thread->jpeer_); |
| 300 | child_thread->jpeer_ = NULL; |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 301 | delete child_thread; |
| 302 | child_thread = NULL; |
| 303 | // TODO: remove from thread group? |
| 304 | env->SetIntField(java_peer, WellKnownClasses::java_lang_Thread_vmData, 0); |
| 305 | { |
Brian Carlstrom | 9efc3e0 | 2012-08-17 17:47:17 -0700 | [diff] [blame] | 306 | std::string msg(StringPrintf("pthread_create (%s stack) failed: %s", |
| 307 | PrettySize(stack_size).c_str(), strerror(pthread_create_result))); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 308 | ScopedObjectAccess soa(env); |
| 309 | soa.Self()->ThrowOutOfMemoryError(msg.c_str()); |
Brian Carlstrom | 9efc3e0 | 2012-08-17 17:47:17 -0700 | [diff] [blame] | 310 | } |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 311 | } |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 312 | } |
| 313 | |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 314 | void Thread::Init(ThreadList* thread_list, JavaVMExt* java_vm) { |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 315 | // This function does all the initialization that must be run by the native thread it applies to. |
| 316 | // (When we create a new thread from managed code, we allocate the Thread* in Thread::Create so |
| 317 | // we can handshake with the corresponding native thread when it's ready.) Check this native |
| 318 | // thread hasn't been through here already... |
Elliott Hughes | cac6cc7 | 2011-11-03 20:31:21 -0700 | [diff] [blame] | 319 | CHECK(Thread::Current() == NULL); |
Elliott Hughes | d8af159 | 2012-04-16 20:40:15 -0700 | [diff] [blame] | 320 | SetUpAlternateSignalStack(); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 321 | InitCpu(); |
| 322 | InitFunctionPointers(); |
Ian Rogers | 5d76c43 | 2011-10-31 21:42:49 -0700 | [diff] [blame] | 323 | InitCardTable(); |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 324 | InitTid(); |
Ian Rogers | 50ffee2 | 2012-11-20 11:47:44 -0800 | [diff] [blame] | 325 | if (Runtime::Current()->InterpreterOnly()) { |
| 326 | AtomicSetFlag(kEnterInterpreter); |
| 327 | } |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 328 | // Set pthread_self_ ahead of pthread_setspecific, that makes Thread::Current function, this |
| 329 | // avoids pthread_self_ ever being invalid when discovered from Thread::Current(). |
Elliott Hughes | 0d39c12 | 2012-06-06 16:41:17 -0700 | [diff] [blame] | 330 | pthread_self_ = pthread_self(); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 331 | CHECK_PTHREAD_CALL(pthread_setspecific, (Thread::pthread_key_self_, this), "attach self"); |
| 332 | DCHECK_EQ(Thread::Current(), this); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 333 | |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 334 | thin_lock_id_ = thread_list->AllocThreadId(this); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 335 | InitStackHwm(); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 336 | |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 337 | jni_env_ = new JNIEnvExt(this, java_vm); |
| 338 | thread_list->Register(this); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 339 | } |
| 340 | |
Mathieu Chartier | 664bebf | 2012-11-12 16:54:11 -0800 | [diff] [blame] | 341 | Thread* Thread::Attach(const char* thread_name, bool as_daemon, jobject thread_group, |
| 342 | bool create_peer) { |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 343 | Thread* self; |
| 344 | Runtime* runtime = Runtime::Current(); |
| 345 | if (runtime == NULL) { |
| 346 | LOG(ERROR) << "Thread attaching to non-existent runtime: " << thread_name; |
| 347 | return NULL; |
| 348 | } |
| 349 | { |
| 350 | MutexLock mu(NULL, *Locks::runtime_shutdown_lock_); |
| 351 | if (runtime->IsShuttingDown()) { |
| 352 | LOG(ERROR) << "Thread attaching while runtime is shutting down: " << thread_name; |
| 353 | return NULL; |
| 354 | } else { |
| 355 | Runtime::Current()->StartThreadBirth(); |
| 356 | self = new Thread(as_daemon); |
| 357 | self->Init(runtime->GetThreadList(), runtime->GetJavaVM()); |
| 358 | Runtime::Current()->EndThreadBirth(); |
| 359 | } |
| 360 | } |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 361 | |
Mathieu Chartier | dbe6f46 | 2012-09-25 16:54:50 -0700 | [diff] [blame] | 362 | CHECK_NE(self->GetState(), kRunnable); |
| 363 | self->SetState(kNative); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 364 | |
Elliott Hughes | cac6cc7 | 2011-11-03 20:31:21 -0700 | [diff] [blame] | 365 | // If we're the main thread, ClassLinker won't be created until after we're attached, |
| 366 | // so that thread needs a two-stage attach. Regular threads don't need this hack. |
Elliott Hughes | d9c67be | 2012-02-02 19:54:06 -0800 | [diff] [blame] | 367 | // In the compiler, all threads need this hack, because no-one's going to be getting |
| 368 | // a native peer! |
Mathieu Chartier | 664bebf | 2012-11-12 16:54:11 -0800 | [diff] [blame] | 369 | if (create_peer) { |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 370 | self->CreatePeer(thread_name, as_daemon, thread_group); |
Elliott Hughes | 06e3ad4 | 2012-02-07 14:51:57 -0800 | [diff] [blame] | 371 | } else { |
| 372 | // These aren't necessary, but they improve diagnostics for unit tests & command-line tools. |
Elliott Hughes | 22869a9 | 2012-03-27 14:08:24 -0700 | [diff] [blame] | 373 | if (thread_name != NULL) { |
| 374 | self->name_->assign(thread_name); |
| 375 | ::art::SetThreadName(thread_name); |
| 376 | } |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 377 | } |
Elliott Hughes | cac6cc7 | 2011-11-03 20:31:21 -0700 | [diff] [blame] | 378 | |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 379 | return self; |
| 380 | } |
| 381 | |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 382 | void Thread::CreatePeer(const char* name, bool as_daemon, jobject thread_group) { |
| 383 | Runtime* runtime = Runtime::Current(); |
| 384 | CHECK(runtime->IsStarted()); |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 385 | JNIEnv* env = jni_env_; |
| 386 | |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 387 | if (thread_group == NULL) { |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 388 | thread_group = runtime->GetMainThreadGroup(); |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 389 | } |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 390 | ScopedLocalRef<jobject> thread_name(env, env->NewStringUTF(name)); |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 391 | jint thread_priority = GetNativePriority(); |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 392 | jboolean thread_is_daemon = as_daemon; |
| 393 | |
Elliott Hughes | eac7667 | 2012-05-24 21:56:51 -0700 | [diff] [blame] | 394 | ScopedLocalRef<jobject> peer(env, env->AllocObject(WellKnownClasses::java_lang_Thread)); |
Mathieu Chartier | dbe6f46 | 2012-09-25 16:54:50 -0700 | [diff] [blame] | 395 | if (peer.get() == NULL) { |
| 396 | CHECK(IsExceptionPending()); |
| 397 | return; |
Ian Rogers | 5d4bdc2 | 2011-11-02 22:15:43 -0700 | [diff] [blame] | 398 | } |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 399 | { |
| 400 | ScopedObjectAccess soa(this); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 401 | opeer_ = soa.Decode<mirror::Object*>(peer.get()); |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 402 | } |
Elliott Hughes | eac7667 | 2012-05-24 21:56:51 -0700 | [diff] [blame] | 403 | env->CallNonvirtualVoidMethod(peer.get(), |
| 404 | WellKnownClasses::java_lang_Thread, |
| 405 | WellKnownClasses::java_lang_Thread_init, |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 406 | thread_group, thread_name.get(), thread_priority, thread_is_daemon); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 407 | AssertNoPendingException(); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 408 | |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 409 | Thread* self = this; |
| 410 | DCHECK_EQ(self, Thread::Current()); |
| 411 | jni_env_->SetIntField(peer.get(), WellKnownClasses::java_lang_Thread_vmData, |
| 412 | reinterpret_cast<jint>(self)); |
| 413 | |
| 414 | ScopedObjectAccess soa(self); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 415 | SirtRef<mirror::String> peer_thread_name(soa.Self(), GetThreadName(soa)); |
Brian Carlstrom | 00fae58 | 2011-10-28 01:16:28 -0700 | [diff] [blame] | 416 | if (peer_thread_name.get() == NULL) { |
| 417 | // The Thread constructor should have set the Thread.name to a |
| 418 | // non-null value. However, because we can run without code |
| 419 | // available (in the compiler, in tests), we manually assign the |
| 420 | // fields the constructor should have set. |
Mathieu Chartier | dbe6f46 | 2012-09-25 16:54:50 -0700 | [diff] [blame] | 421 | soa.DecodeField(WellKnownClasses::java_lang_Thread_daemon)-> |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 422 | SetBoolean(opeer_, thread_is_daemon); |
Mathieu Chartier | dbe6f46 | 2012-09-25 16:54:50 -0700 | [diff] [blame] | 423 | soa.DecodeField(WellKnownClasses::java_lang_Thread_group)-> |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 424 | SetObject(opeer_, soa.Decode<mirror::Object*>(thread_group)); |
Mathieu Chartier | dbe6f46 | 2012-09-25 16:54:50 -0700 | [diff] [blame] | 425 | soa.DecodeField(WellKnownClasses::java_lang_Thread_name)-> |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 426 | SetObject(opeer_, soa.Decode<mirror::Object*>(thread_name.get())); |
Mathieu Chartier | dbe6f46 | 2012-09-25 16:54:50 -0700 | [diff] [blame] | 427 | soa.DecodeField(WellKnownClasses::java_lang_Thread_priority)-> |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 428 | SetInt(opeer_, thread_priority); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 429 | peer_thread_name.reset(GetThreadName(soa)); |
Brian Carlstrom | 00fae58 | 2011-10-28 01:16:28 -0700 | [diff] [blame] | 430 | } |
Elliott Hughes | 225f5a1 | 2012-06-11 11:23:48 -0700 | [diff] [blame] | 431 | // 'thread_name' may have been null, so don't trust 'peer_thread_name' to be non-null. |
Brian Carlstrom | 00fae58 | 2011-10-28 01:16:28 -0700 | [diff] [blame] | 432 | if (peer_thread_name.get() != NULL) { |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 433 | SetThreadName(peer_thread_name->ToModifiedUtf8().c_str()); |
Brian Carlstrom | 00fae58 | 2011-10-28 01:16:28 -0700 | [diff] [blame] | 434 | } |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 435 | } |
| 436 | |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 437 | void Thread::SetThreadName(const char* name) { |
| 438 | name_->assign(name); |
| 439 | ::art::SetThreadName(name); |
| 440 | Dbg::DdmSendThreadNotification(this, CHUNK_TYPE("THNM")); |
| 441 | } |
| 442 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 443 | void Thread::InitStackHwm() { |
Elliott Hughes | e188419 | 2012-04-23 12:38:15 -0700 | [diff] [blame] | 444 | void* stack_base; |
| 445 | size_t stack_size; |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 446 | GetThreadStack(pthread_self_, stack_base, stack_size); |
Elliott Hughes | 36ecb78 | 2012-04-17 16:55:45 -0700 | [diff] [blame] | 447 | |
| 448 | // TODO: include this in the thread dumps; potentially useful in SIGQUIT output? |
Elliott Hughes | e188419 | 2012-04-23 12:38:15 -0700 | [diff] [blame] | 449 | VLOG(threads) << StringPrintf("Native stack is at %p (%s)", stack_base, PrettySize(stack_size).c_str()); |
| 450 | |
| 451 | stack_begin_ = reinterpret_cast<byte*>(stack_base); |
| 452 | stack_size_ = stack_size; |
Elliott Hughes | 36ecb78 | 2012-04-17 16:55:45 -0700 | [diff] [blame] | 453 | |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 454 | if (stack_size_ <= kStackOverflowReservedBytes) { |
Elliott Hughes | 3d30d9b | 2011-12-07 17:35:48 -0800 | [diff] [blame] | 455 | LOG(FATAL) << "Attempt to attach a thread with a too-small stack (" << stack_size_ << " bytes)"; |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 456 | } |
Elliott Hughes | 449b4bd | 2011-09-09 12:01:38 -0700 | [diff] [blame] | 457 | |
Elliott Hughes | e188419 | 2012-04-23 12:38:15 -0700 | [diff] [blame] | 458 | // TODO: move this into the Linux GetThreadStack implementation. |
| 459 | #if !defined(__APPLE__) |
Elliott Hughes | 36ecb78 | 2012-04-17 16:55:45 -0700 | [diff] [blame] | 460 | // If we're the main thread, check whether we were run with an unlimited stack. In that case, |
| 461 | // glibc will have reported a 2GB stack for our 32-bit process, and our stack overflow detection |
| 462 | // will be broken because we'll die long before we get close to 2GB. |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 463 | bool is_main_thread = (::art::GetTid() == getpid()); |
| 464 | if (is_main_thread) { |
Elliott Hughes | 36ecb78 | 2012-04-17 16:55:45 -0700 | [diff] [blame] | 465 | rlimit stack_limit; |
| 466 | if (getrlimit(RLIMIT_STACK, &stack_limit) == -1) { |
| 467 | PLOG(FATAL) << "getrlimit(RLIMIT_STACK) failed"; |
| 468 | } |
| 469 | if (stack_limit.rlim_cur == RLIM_INFINITY) { |
| 470 | // Find the default stack size for new threads... |
| 471 | pthread_attr_t default_attributes; |
| 472 | size_t default_stack_size; |
| 473 | CHECK_PTHREAD_CALL(pthread_attr_init, (&default_attributes), "default stack size query"); |
| 474 | CHECK_PTHREAD_CALL(pthread_attr_getstacksize, (&default_attributes, &default_stack_size), |
| 475 | "default stack size query"); |
| 476 | CHECK_PTHREAD_CALL(pthread_attr_destroy, (&default_attributes), "default stack size query"); |
| 477 | |
| 478 | // ...and use that as our limit. |
| 479 | size_t old_stack_size = stack_size_; |
| 480 | stack_size_ = default_stack_size; |
| 481 | stack_begin_ += (old_stack_size - stack_size_); |
Elliott Hughes | faf4ba0 | 2012-05-02 16:12:19 -0700 | [diff] [blame] | 482 | VLOG(threads) << "Limiting unlimited stack (reported as " << PrettySize(old_stack_size) << ")" |
| 483 | << " to " << PrettySize(stack_size_) |
| 484 | << " with base " << reinterpret_cast<void*>(stack_begin_); |
Elliott Hughes | 36ecb78 | 2012-04-17 16:55:45 -0700 | [diff] [blame] | 485 | } |
| 486 | } |
Elliott Hughes | e188419 | 2012-04-23 12:38:15 -0700 | [diff] [blame] | 487 | #endif |
Elliott Hughes | 36ecb78 | 2012-04-17 16:55:45 -0700 | [diff] [blame] | 488 | |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 489 | // Set stack_end_ to the bottom of the stack saving space of stack overflows |
| 490 | ResetDefaultStackEnd(); |
Elliott Hughes | 449b4bd | 2011-09-09 12:01:38 -0700 | [diff] [blame] | 491 | |
| 492 | // Sanity check. |
| 493 | int stack_variable; |
Elliott Hughes | 398f64b | 2012-03-26 18:05:48 -0700 | [diff] [blame] | 494 | CHECK_GT(&stack_variable, reinterpret_cast<void*>(stack_end_)); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 495 | } |
| 496 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 497 | void Thread::ShortDump(std::ostream& os) const { |
| 498 | os << "Thread["; |
| 499 | if (GetThinLockId() != 0) { |
| 500 | // If we're in kStarting, we won't have a thin lock id or tid yet. |
| 501 | os << GetThinLockId() |
| 502 | << ",tid=" << GetTid() << ','; |
Elliott Hughes | e091855 | 2011-10-28 17:18:29 -0700 | [diff] [blame] | 503 | } |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 504 | os << GetState() |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 505 | << ",Thread*=" << this |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 506 | << ",peer=" << opeer_ |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 507 | << ",\"" << *name_ << "\"" |
| 508 | << "]"; |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 509 | } |
| 510 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 511 | void Thread::Dump(std::ostream& os) const { |
| 512 | DumpState(os); |
| 513 | DumpStack(os); |
| 514 | } |
| 515 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 516 | mirror::String* Thread::GetThreadName(const ScopedObjectAccessUnchecked& soa) const { |
| 517 | mirror::Field* f = soa.DecodeField(WellKnownClasses::java_lang_Thread_name); |
| 518 | return (opeer_ != NULL) ? reinterpret_cast<mirror::String*>(f->GetObject(opeer_)) : NULL; |
Elliott Hughes | fc86162 | 2011-10-17 17:57:47 -0700 | [diff] [blame] | 519 | } |
| 520 | |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 521 | void Thread::GetThreadName(std::string& name) const { |
| 522 | name.assign(*name_); |
| 523 | } |
| 524 | |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 525 | void Thread::AtomicSetFlag(ThreadFlag flag) { |
Ian Rogers | 30e173f | 2012-09-26 14:35:03 -0700 | [diff] [blame] | 526 | android_atomic_or(flag, &state_and_flags_.as_int); |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 527 | } |
| 528 | |
| 529 | void Thread::AtomicClearFlag(ThreadFlag flag) { |
Ian Rogers | 30e173f | 2012-09-26 14:35:03 -0700 | [diff] [blame] | 530 | android_atomic_and(-1 ^ flag, &state_and_flags_.as_int); |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 531 | } |
| 532 | |
| 533 | ThreadState Thread::SetState(ThreadState new_state) { |
| 534 | // Cannot use this code to change into Runnable as changing to Runnable should fail if |
| 535 | // old_state_and_flags.suspend_request is true. |
| 536 | DCHECK_NE(new_state, kRunnable); |
| 537 | DCHECK_EQ(this, Thread::Current()); |
Ian Rogers | 30e173f | 2012-09-26 14:35:03 -0700 | [diff] [blame] | 538 | union StateAndFlags old_state_and_flags = state_and_flags_; |
| 539 | state_and_flags_.as_struct.state = new_state; |
| 540 | return static_cast<ThreadState>(old_state_and_flags.as_struct.state); |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 541 | } |
| 542 | |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 543 | // Attempt to rectify locks so that we dump thread list with required locks before exiting. |
| 544 | static void UnsafeLogFatalForSuspendCount(Thread* self, Thread* thread) NO_THREAD_SAFETY_ANALYSIS { |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 545 | LOG(ERROR) << *thread << " suspend count already zero."; |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 546 | Locks::thread_suspend_count_lock_->Unlock(self); |
| 547 | if (!Locks::mutator_lock_->IsSharedHeld(self)) { |
| 548 | Locks::mutator_lock_->SharedTryLock(self); |
| 549 | if (!Locks::mutator_lock_->IsSharedHeld(self)) { |
| 550 | LOG(WARNING) << "Dumping thread list without holding mutator_lock_"; |
| 551 | } |
| 552 | } |
| 553 | if (!Locks::thread_list_lock_->IsExclusiveHeld(self)) { |
| 554 | Locks::thread_list_lock_->TryLock(self); |
| 555 | if (!Locks::thread_list_lock_->IsExclusiveHeld(self)) { |
| 556 | LOG(WARNING) << "Dumping thread list without holding thread_list_lock_"; |
| 557 | } |
| 558 | } |
| 559 | std::ostringstream ss; |
| 560 | Runtime::Current()->GetThreadList()->DumpLocked(ss); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 561 | LOG(FATAL) << ss.str(); |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 562 | } |
| 563 | |
| 564 | void Thread::ModifySuspendCount(Thread* self, int delta, bool for_debugger) { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 565 | DCHECK(delta == -1 || delta == +1 || delta == -debug_suspend_count_) |
| 566 | << delta << " " << debug_suspend_count_ << " " << this; |
| 567 | DCHECK_GE(suspend_count_, debug_suspend_count_) << this; |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 568 | Locks::thread_suspend_count_lock_->AssertHeld(self); |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 569 | if (this != self && !IsSuspended()) { |
| 570 | Locks::thread_list_lock_->AssertHeld(self); |
| 571 | } |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 572 | if (UNLIKELY(delta < 0 && suspend_count_ <= 0)) { |
| 573 | UnsafeLogFatalForSuspendCount(self, this); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 574 | return; |
| 575 | } |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 576 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 577 | suspend_count_ += delta; |
| 578 | if (for_debugger) { |
| 579 | debug_suspend_count_ += delta; |
| 580 | } |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 581 | |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 582 | if (suspend_count_ == 0) { |
| 583 | AtomicClearFlag(kSuspendRequest); |
| 584 | } else { |
| 585 | AtomicSetFlag(kSuspendRequest); |
| 586 | } |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 587 | } |
| 588 | |
Mathieu Chartier | 0e4627e | 2012-10-23 16:13:36 -0700 | [diff] [blame] | 589 | bool Thread::RequestCheckpoint(Closure* function) { |
Mathieu Chartier | 858f1c5 | 2012-10-17 17:45:55 -0700 | [diff] [blame] | 590 | CHECK(!ReadFlag(kCheckpointRequest)) << "Already have a pending checkpoint request"; |
| 591 | checkpoint_function_ = function; |
| 592 | union StateAndFlags old_state_and_flags = state_and_flags_; |
| 593 | // We must be runnable to request a checkpoint. |
| 594 | old_state_and_flags.as_struct.state = kRunnable; |
| 595 | union StateAndFlags new_state_and_flags = old_state_and_flags; |
| 596 | new_state_and_flags.as_struct.flags |= kCheckpointRequest; |
| 597 | int succeeded = android_atomic_cmpxchg(old_state_and_flags.as_int, new_state_and_flags.as_int, |
| 598 | &state_and_flags_.as_int); |
| 599 | return succeeded == 0; |
| 600 | } |
| 601 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 602 | void Thread::FullSuspendCheck() { |
| 603 | VLOG(threads) << this << " self-suspending"; |
| 604 | // Make thread appear suspended to other threads, release mutator_lock_. |
| 605 | TransitionFromRunnableToSuspended(kSuspended); |
| 606 | // Transition back to runnable noting requests to suspend, re-acquire share on mutator_lock_. |
| 607 | TransitionFromSuspendedToRunnable(); |
| 608 | VLOG(threads) << this << " self-reviving"; |
| 609 | } |
| 610 | |
| 611 | void Thread::TransitionFromRunnableToSuspended(ThreadState new_state) { |
| 612 | AssertThreadSuspensionIsAllowable(); |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 613 | DCHECK_NE(new_state, kRunnable); |
| 614 | DCHECK_EQ(this, Thread::Current()); |
Ian Rogers | c747cff | 2012-08-31 18:20:08 -0700 | [diff] [blame] | 615 | // Change to non-runnable state, thereby appearing suspended to the system. |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 616 | DCHECK_EQ(GetState(), kRunnable); |
Mathieu Chartier | 858f1c5 | 2012-10-17 17:45:55 -0700 | [diff] [blame] | 617 | union StateAndFlags old_state_and_flags; |
| 618 | union StateAndFlags new_state_and_flags; |
| 619 | do { |
| 620 | old_state_and_flags = state_and_flags_; |
| 621 | // Copy over flags and try to clear the checkpoint bit if it is set. |
| 622 | new_state_and_flags.as_struct.flags = old_state_and_flags.as_struct.flags & ~kCheckpointRequest; |
| 623 | new_state_and_flags.as_struct.state = new_state; |
| 624 | } while (android_atomic_cmpxchg(old_state_and_flags.as_int, new_state_and_flags.as_int, |
| 625 | &state_and_flags_.as_int) != 0); |
| 626 | // If we toggled the checkpoint flag we must have cleared it. |
| 627 | uint16_t flag_change = new_state_and_flags.as_struct.flags ^ old_state_and_flags.as_struct.flags; |
| 628 | if ((flag_change & kCheckpointRequest) != 0) { |
| 629 | RunCheckpointFunction(); |
| 630 | } |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 631 | // Release share on mutator_lock_. |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 632 | Locks::mutator_lock_->SharedUnlock(this); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 633 | } |
| 634 | |
| 635 | ThreadState Thread::TransitionFromSuspendedToRunnable() { |
| 636 | bool done = false; |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 637 | union StateAndFlags old_state_and_flags = state_and_flags_; |
| 638 | int16_t old_state = old_state_and_flags.as_struct.state; |
| 639 | DCHECK_NE(static_cast<ThreadState>(old_state), kRunnable); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 640 | do { |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 641 | Locks::mutator_lock_->AssertNotHeld(this); // Otherwise we starve GC.. |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 642 | old_state_and_flags = state_and_flags_; |
| 643 | DCHECK_EQ(old_state_and_flags.as_struct.state, old_state); |
| 644 | if ((old_state_and_flags.as_struct.flags & kSuspendRequest) != 0) { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 645 | // Wait while our suspend count is non-zero. |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 646 | MutexLock mu(this, *Locks::thread_suspend_count_lock_); |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 647 | old_state_and_flags = state_and_flags_; |
| 648 | DCHECK_EQ(old_state_and_flags.as_struct.state, old_state); |
| 649 | while ((old_state_and_flags.as_struct.flags & kSuspendRequest) != 0) { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 650 | // Re-check when Thread::resume_cond_ is notified. |
Ian Rogers | c604d73 | 2012-10-14 16:09:54 -0700 | [diff] [blame] | 651 | Thread::resume_cond_->Wait(this); |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 652 | old_state_and_flags = state_and_flags_; |
| 653 | DCHECK_EQ(old_state_and_flags.as_struct.state, old_state); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 654 | } |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 655 | DCHECK_EQ(GetSuspendCount(), 0); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 656 | } |
| 657 | // Re-acquire shared mutator_lock_ access. |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 658 | Locks::mutator_lock_->SharedLock(this); |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 659 | // Atomically change from suspended to runnable if no suspend request pending. |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 660 | old_state_and_flags = state_and_flags_; |
| 661 | DCHECK_EQ(old_state_and_flags.as_struct.state, old_state); |
| 662 | if ((old_state_and_flags.as_struct.flags & kSuspendRequest) == 0) { |
| 663 | union StateAndFlags new_state_and_flags = old_state_and_flags; |
| 664 | new_state_and_flags.as_struct.state = kRunnable; |
| 665 | done = android_atomic_cmpxchg(old_state_and_flags.as_int, new_state_and_flags.as_int, |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 666 | &state_and_flags_.as_int) |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 667 | == 0; |
| 668 | } |
| 669 | if (!done) { |
| 670 | // Failed to transition to Runnable. Release shared mutator_lock_ access and try again. |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 671 | Locks::mutator_lock_->SharedUnlock(this); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 672 | } |
| 673 | } while (!done); |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 674 | return static_cast<ThreadState>(old_state); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 675 | } |
| 676 | |
Elliott Hughes | f327e07 | 2013-01-09 16:01:26 -0800 | [diff] [blame] | 677 | Thread* Thread::SuspendForDebugger(jobject peer, bool request_suspension, bool* timed_out) { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 678 | static const useconds_t kTimeoutUs = 30 * 1000000; // 30s. |
| 679 | useconds_t total_delay_us = 0; |
| 680 | useconds_t delay_us = 0; |
| 681 | bool did_suspend_request = false; |
Elliott Hughes | f327e07 | 2013-01-09 16:01:26 -0800 | [diff] [blame] | 682 | *timed_out = false; |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 683 | while (true) { |
| 684 | Thread* thread; |
| 685 | { |
| 686 | ScopedObjectAccess soa(Thread::Current()); |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 687 | MutexLock mu(soa.Self(), *Locks::thread_list_lock_); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 688 | thread = Thread::FromManagedThread(soa, peer); |
| 689 | if (thread == NULL) { |
| 690 | LOG(WARNING) << "No such thread for suspend: " << peer; |
| 691 | return NULL; |
| 692 | } |
| 693 | { |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 694 | MutexLock mu(soa.Self(), *Locks::thread_suspend_count_lock_); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 695 | if (request_suspension) { |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 696 | thread->ModifySuspendCount(soa.Self(), +1, true /* for_debugger */); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 697 | request_suspension = false; |
| 698 | did_suspend_request = true; |
| 699 | } |
| 700 | // IsSuspended on the current thread will fail as the current thread is changed into |
| 701 | // Runnable above. As the suspend count is now raised if this is the current thread |
| 702 | // it will self suspend on transition to Runnable, making it hard to work with. Its simpler |
| 703 | // to just explicitly handle the current thread in the callers to this code. |
| 704 | CHECK_NE(thread, soa.Self()) << "Attempt to suspend for debugger the current thread"; |
| 705 | // If thread is suspended (perhaps it was already not Runnable but didn't have a suspend |
| 706 | // count, or else we've waited and it has self suspended) or is the current thread, we're |
| 707 | // done. |
| 708 | if (thread->IsSuspended()) { |
| 709 | return thread; |
| 710 | } |
| 711 | if (total_delay_us >= kTimeoutUs) { |
| 712 | LOG(ERROR) << "Thread suspension timed out: " << peer; |
| 713 | if (did_suspend_request) { |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 714 | thread->ModifySuspendCount(soa.Self(), -1, true /* for_debugger */); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 715 | } |
Elliott Hughes | f327e07 | 2013-01-09 16:01:26 -0800 | [diff] [blame] | 716 | *timed_out = true; |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 717 | return NULL; |
| 718 | } |
| 719 | } |
| 720 | // Release locks and come out of runnable state. |
| 721 | } |
| 722 | for (int i = kMaxMutexLevel; i >= 0; --i) { |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 723 | BaseMutex* held_mutex = Thread::Current()->GetHeldMutex(static_cast<LockLevel>(i)); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 724 | if (held_mutex != NULL) { |
| 725 | LOG(FATAL) << "Holding " << held_mutex->GetName() |
| 726 | << " while sleeping for thread suspension"; |
| 727 | } |
| 728 | } |
| 729 | { |
| 730 | useconds_t new_delay_us = delay_us * 2; |
| 731 | CHECK_GE(new_delay_us, delay_us); |
| 732 | if (new_delay_us < 500000) { // Don't allow sleeping to be more than 0.5s. |
| 733 | delay_us = new_delay_us; |
| 734 | } |
| 735 | } |
| 736 | if (delay_us == 0) { |
| 737 | sched_yield(); |
| 738 | // Default to 1 milliseconds (note that this gets multiplied by 2 before the first sleep). |
| 739 | delay_us = 500; |
| 740 | } else { |
| 741 | usleep(delay_us); |
| 742 | total_delay_us += delay_us; |
| 743 | } |
| 744 | } |
| 745 | } |
| 746 | |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 747 | void Thread::DumpState(std::ostream& os, const Thread* thread, pid_t tid) { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 748 | std::string group_name; |
| 749 | int priority; |
| 750 | bool is_daemon = false; |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 751 | Thread* self = Thread::Current(); |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 752 | |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 753 | if (thread != NULL && thread->opeer_ != NULL) { |
| 754 | ScopedObjectAccessUnchecked soa(self); |
| 755 | priority = soa.DecodeField(WellKnownClasses::java_lang_Thread_priority)->GetInt(thread->opeer_); |
| 756 | is_daemon = soa.DecodeField(WellKnownClasses::java_lang_Thread_daemon)->GetBoolean(thread->opeer_); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 757 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 758 | mirror::Object* thread_group = |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 759 | soa.DecodeField(WellKnownClasses::java_lang_Thread_group)->GetObject(thread->opeer_); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 760 | |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 761 | if (thread_group != NULL) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 762 | mirror::Field* group_name_field = |
| 763 | soa.DecodeField(WellKnownClasses::java_lang_ThreadGroup_name); |
| 764 | mirror::String* group_name_string = |
| 765 | reinterpret_cast<mirror::String*>(group_name_field->GetObject(thread_group)); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 766 | group_name = (group_name_string != NULL) ? group_name_string->ToModifiedUtf8() : "<null>"; |
| 767 | } |
| 768 | } else { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 769 | priority = GetNativePriority(); |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 770 | } |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 771 | |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 772 | std::string scheduler_group_name(GetSchedulerGroupName(tid)); |
Elliott Hughes | 1bac54f | 2012-03-16 12:48:31 -0700 | [diff] [blame] | 773 | if (scheduler_group_name.empty()) { |
| 774 | scheduler_group_name = "default"; |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 775 | } |
| 776 | |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 777 | if (thread != NULL) { |
| 778 | os << '"' << *thread->name_ << '"'; |
| 779 | if (is_daemon) { |
| 780 | os << " daemon"; |
| 781 | } |
| 782 | os << " prio=" << priority |
| 783 | << " tid=" << thread->GetThinLockId() |
Elliott Hughes | 80537bb | 2013-01-04 16:37:26 -0800 | [diff] [blame] | 784 | << " " << thread->GetState(); |
| 785 | if (thread->IsStillStarting()) { |
| 786 | os << " (still starting up)"; |
| 787 | } |
| 788 | os << "\n"; |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 789 | } else { |
Elliott Hughes | 289be85 | 2012-06-12 13:57:20 -0700 | [diff] [blame] | 790 | os << '"' << ::art::GetThreadName(tid) << '"' |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 791 | << " prio=" << priority |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 792 | << " (not attached)\n"; |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 793 | } |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 794 | |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 795 | if (thread != NULL) { |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 796 | MutexLock mu(self, *Locks::thread_suspend_count_lock_); |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 797 | os << " | group=\"" << group_name << "\"" |
| 798 | << " sCount=" << thread->suspend_count_ |
| 799 | << " dsCount=" << thread->debug_suspend_count_ |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 800 | << " obj=" << reinterpret_cast<void*>(thread->opeer_) |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 801 | << " self=" << reinterpret_cast<const void*>(thread) << "\n"; |
| 802 | } |
Elliott Hughes | 0d39c12 | 2012-06-06 16:41:17 -0700 | [diff] [blame] | 803 | |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 804 | os << " | sysTid=" << tid |
| 805 | << " nice=" << getpriority(PRIO_PROCESS, tid) |
Elliott Hughes | 0d39c12 | 2012-06-06 16:41:17 -0700 | [diff] [blame] | 806 | << " cgrp=" << scheduler_group_name; |
| 807 | if (thread != NULL) { |
| 808 | int policy; |
| 809 | sched_param sp; |
| 810 | CHECK_PTHREAD_CALL(pthread_getschedparam, (thread->pthread_self_, &policy, &sp), __FUNCTION__); |
| 811 | os << " sched=" << policy << "/" << sp.sched_priority |
| 812 | << " handle=" << reinterpret_cast<void*>(thread->pthread_self_); |
| 813 | } |
| 814 | os << "\n"; |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 815 | |
| 816 | // Grab the scheduler stats for this thread. |
| 817 | std::string scheduler_stats; |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 818 | if (ReadFileToString(StringPrintf("/proc/self/task/%d/schedstat", tid), &scheduler_stats)) { |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 819 | scheduler_stats.resize(scheduler_stats.size() - 1); // Lose the trailing '\n'. |
| 820 | } else { |
| 821 | scheduler_stats = "0 0 0"; |
| 822 | } |
| 823 | |
Elliott Hughes | ba0b9c5 | 2012-09-20 11:25:12 -0700 | [diff] [blame] | 824 | char native_thread_state = '?'; |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 825 | int utime = 0; |
| 826 | int stime = 0; |
| 827 | int task_cpu = 0; |
Elliott Hughes | ba0b9c5 | 2012-09-20 11:25:12 -0700 | [diff] [blame] | 828 | GetTaskStats(tid, native_thread_state, utime, stime, task_cpu); |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 829 | |
Elliott Hughes | ba0b9c5 | 2012-09-20 11:25:12 -0700 | [diff] [blame] | 830 | os << " | state=" << native_thread_state |
| 831 | << " schedstat=( " << scheduler_stats << " )" |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 832 | << " utm=" << utime |
| 833 | << " stm=" << stime |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 834 | << " core=" << task_cpu |
| 835 | << " HZ=" << sysconf(_SC_CLK_TCK) << "\n"; |
| 836 | if (thread != NULL) { |
| 837 | os << " | stack=" << reinterpret_cast<void*>(thread->stack_begin_) << "-" << reinterpret_cast<void*>(thread->stack_end_) |
| 838 | << " stackSize=" << PrettySize(thread->stack_size_) << "\n"; |
| 839 | } |
| 840 | } |
| 841 | |
| 842 | void Thread::DumpState(std::ostream& os) const { |
| 843 | Thread::DumpState(os, this, GetTid()); |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 844 | } |
| 845 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 846 | struct StackDumpVisitor : public StackVisitor { |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 847 | StackDumpVisitor(std::ostream& os, Thread* thread, Context* context, bool can_allocate) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 848 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 849 | : StackVisitor(thread, context), os(os), thread(thread), can_allocate(can_allocate), |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 850 | last_method(NULL), last_line_number(0), repetition_count(0), frame_count(0) { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 851 | } |
| 852 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 853 | virtual ~StackDumpVisitor() { |
Elliott Hughes | e85d2e9 | 2012-05-01 14:02:10 -0700 | [diff] [blame] | 854 | if (frame_count == 0) { |
| 855 | os << " (no managed stack frames)\n"; |
| 856 | } |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 857 | } |
| 858 | |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 859 | bool VisitFrame() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 860 | mirror::AbstractMethod* m = GetMethod(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 861 | if (m->IsRuntimeMethod()) { |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 862 | return true; |
Ian Rogers | 9086572 | 2011-09-19 11:11:44 -0700 | [diff] [blame] | 863 | } |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 864 | const int kMaxRepetition = 3; |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 865 | mirror::Class* c = m->GetDeclaringClass(); |
| 866 | const mirror::DexCache* dex_cache = c->GetDexCache(); |
Ian Rogers | b861dc0 | 2011-11-14 17:00:05 -0800 | [diff] [blame] | 867 | int line_number = -1; |
| 868 | if (dex_cache != NULL) { // be tolerant of bad input |
Ian Rogers | 4445a7e | 2012-10-05 17:19:13 -0700 | [diff] [blame] | 869 | const DexFile& dex_file = *dex_cache->GetDexFile(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 870 | line_number = dex_file.GetLineNumFromPC(m, GetDexPc()); |
Ian Rogers | b861dc0 | 2011-11-14 17:00:05 -0800 | [diff] [blame] | 871 | } |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 872 | if (line_number == last_line_number && last_method == m) { |
| 873 | repetition_count++; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 874 | } else { |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 875 | if (repetition_count >= kMaxRepetition) { |
| 876 | os << " ... repeated " << (repetition_count - kMaxRepetition) << " times\n"; |
| 877 | } |
| 878 | repetition_count = 0; |
| 879 | last_line_number = line_number; |
| 880 | last_method = m; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 881 | } |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 882 | if (repetition_count < kMaxRepetition) { |
| 883 | os << " at " << PrettyMethod(m, false); |
| 884 | if (m->IsNative()) { |
| 885 | os << "(Native method)"; |
| 886 | } else { |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 887 | mh.ChangeMethod(m); |
| 888 | const char* source_file(mh.GetDeclaringClassSourceFile()); |
| 889 | os << "(" << (source_file != NULL ? source_file : "unavailable") |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 890 | << ":" << line_number << ")"; |
| 891 | } |
| 892 | os << "\n"; |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 893 | if (frame_count == 0) { |
| 894 | Monitor::DescribeWait(os, thread); |
| 895 | } |
| 896 | if (can_allocate) { |
Elliott Hughes | 4993bbc | 2013-01-10 15:41:25 -0800 | [diff] [blame] | 897 | Monitor::VisitLocks(this, DumpLockedObject, &os); |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 898 | } |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 899 | } |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 900 | |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 901 | ++frame_count; |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 902 | return true; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 903 | } |
Elliott Hughes | 4993bbc | 2013-01-10 15:41:25 -0800 | [diff] [blame] | 904 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 905 | static void DumpLockedObject(mirror::Object* o, void* context) |
Elliott Hughes | 4993bbc | 2013-01-10 15:41:25 -0800 | [diff] [blame] | 906 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 907 | std::ostream& os = *reinterpret_cast<std::ostream*>(context); |
| 908 | os << " - locked <" << o << "> (a " << PrettyTypeOf(o) << ")\n"; |
| 909 | } |
| 910 | |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 911 | std::ostream& os; |
| 912 | const Thread* thread; |
| 913 | bool can_allocate; |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 914 | MethodHelper mh; |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 915 | mirror::AbstractMethod* last_method; |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 916 | int last_line_number; |
| 917 | int repetition_count; |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 918 | int frame_count; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 919 | }; |
| 920 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 921 | void Thread::DumpStack(std::ostream& os) const { |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 922 | // If we're currently in native code, dump that stack before dumping the managed stack. |
Mathieu Chartier | dbe6f46 | 2012-09-25 16:54:50 -0700 | [diff] [blame] | 923 | if (GetState() == kNative) { |
Elliott Hughes | 46e251b | 2012-05-22 15:10:45 -0700 | [diff] [blame] | 924 | DumpKernelStack(os, GetTid(), " kernel: ", false); |
| 925 | DumpNativeStack(os, GetTid(), " native: ", false); |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 926 | } |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 927 | UniquePtr<Context> context(Context::Create()); |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 928 | StackDumpVisitor dumper(os, const_cast<Thread*>(this), context.get(), !throwing_OutOfMemoryError_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 929 | dumper.WalkStack(); |
Elliott Hughes | e27955c | 2011-08-26 15:21:24 -0700 | [diff] [blame] | 930 | } |
| 931 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 932 | void Thread::ThreadExitCallback(void* arg) { |
| 933 | Thread* self = reinterpret_cast<Thread*>(arg); |
Elliott Hughes | 6a607ad | 2012-07-13 20:40:00 -0700 | [diff] [blame] | 934 | if (self->thread_exit_check_count_ == 0) { |
| 935 | LOG(WARNING) << "Native thread exiting without having called DetachCurrentThread (maybe it's going to use a pthread_key_create destructor?): " << *self; |
| 936 | CHECK_PTHREAD_CALL(pthread_setspecific, (Thread::pthread_key_self_, self), "reattach self"); |
| 937 | self->thread_exit_check_count_ = 1; |
| 938 | } else { |
| 939 | LOG(FATAL) << "Native thread exited without calling DetachCurrentThread: " << *self; |
| 940 | } |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 941 | } |
| 942 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 943 | void Thread::Startup() { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 944 | { |
Ian Rogers | 50b35e2 | 2012-10-04 10:09:15 -0700 | [diff] [blame] | 945 | MutexLock mu(Thread::Current(), *Locks::thread_suspend_count_lock_); // Keep GCC happy. |
Ian Rogers | c604d73 | 2012-10-14 16:09:54 -0700 | [diff] [blame] | 946 | resume_cond_ = new ConditionVariable("Thread resumption condition variable", |
| 947 | *Locks::thread_suspend_count_lock_); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 948 | } |
| 949 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 950 | // Allocate a TLS slot. |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 951 | CHECK_PTHREAD_CALL(pthread_key_create, (&Thread::pthread_key_self_, Thread::ThreadExitCallback), "self key"); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 952 | |
| 953 | // Double-check the TLS slot allocation. |
| 954 | if (pthread_getspecific(pthread_key_self_) != NULL) { |
Elliott Hughes | 3d30d9b | 2011-12-07 17:35:48 -0800 | [diff] [blame] | 955 | LOG(FATAL) << "Newly-created pthread TLS slot is not NULL"; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 956 | } |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 957 | } |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 958 | |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 959 | void Thread::FinishStartup() { |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 960 | Runtime* runtime = Runtime::Current(); |
| 961 | CHECK(runtime->IsStarted()); |
Brian Carlstrom | b82b687 | 2011-10-26 17:18:07 -0700 | [diff] [blame] | 962 | |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 963 | // Finish attaching the main thread. |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 964 | ScopedObjectAccess soa(Thread::Current()); |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 965 | Thread::Current()->CreatePeer("main", false, runtime->GetMainThreadGroup()); |
Jesse Wilson | 9a6bae8 | 2011-11-14 14:57:30 -0500 | [diff] [blame] | 966 | |
Elliott Hughes | af8d15a | 2012-05-29 09:12:18 -0700 | [diff] [blame] | 967 | Runtime::Current()->GetClassLinker()->RunRootClinits(); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 968 | } |
| 969 | |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 970 | void Thread::Shutdown() { |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 971 | CHECK_PTHREAD_CALL(pthread_key_delete, (Thread::pthread_key_self_), "self key"); |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 972 | } |
| 973 | |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 974 | Thread::Thread(bool daemon) |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 975 | : suspend_count_(0), |
| 976 | card_table_(NULL), |
| 977 | exception_(NULL), |
| 978 | stack_end_(NULL), |
| 979 | managed_stack_(), |
| 980 | jni_env_(NULL), |
| 981 | self_(NULL), |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 982 | opeer_(NULL), |
| 983 | jpeer_(NULL), |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 984 | stack_begin_(NULL), |
| 985 | stack_size_(0), |
| 986 | thin_lock_id_(0), |
| 987 | tid_(0), |
Elliott Hughes | e62934d | 2012-04-09 11:24:29 -0700 | [diff] [blame] | 988 | wait_mutex_(new Mutex("a thread wait mutex")), |
Ian Rogers | c604d73 | 2012-10-14 16:09:54 -0700 | [diff] [blame] | 989 | wait_cond_(new ConditionVariable("a thread wait condition variable", *wait_mutex_)), |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 990 | wait_monitor_(NULL), |
| 991 | interrupted_(false), |
Elliott Hughes | dc33ad5 | 2011-09-16 19:46:51 -0700 | [diff] [blame] | 992 | wait_next_(NULL), |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 993 | monitor_enter_object_(NULL), |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 994 | top_sirt_(NULL), |
Elliott Hughes | dc33ad5 | 2011-09-16 19:46:51 -0700 | [diff] [blame] | 995 | runtime_(NULL), |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 996 | class_loader_override_(NULL), |
Elliott Hughes | 418dfe7 | 2011-10-06 18:56:27 -0700 | [diff] [blame] | 997 | long_jump_context_(NULL), |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 998 | throwing_OutOfMemoryError_(false), |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 999 | debug_suspend_count_(0), |
jeffhao | e343b76 | 2011-12-05 16:36:44 -0800 | [diff] [blame] | 1000 | debug_invoke_req_(new DebugInvokeReq), |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 1001 | instrumentation_stack_(new std::deque<InstrumentationStackFrame>), |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1002 | name_(new std::string(kThreadNameDuringStartup)), |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 1003 | daemon_(daemon), |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1004 | pthread_self_(0), |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 1005 | no_thread_suspension_(0), |
Elliott Hughes | 6a607ad | 2012-07-13 20:40:00 -0700 | [diff] [blame] | 1006 | last_no_thread_suspension_cause_(NULL), |
Mathieu Chartier | 858f1c5 | 2012-10-17 17:45:55 -0700 | [diff] [blame] | 1007 | checkpoint_function_(0), |
Elliott Hughes | 6a607ad | 2012-07-13 20:40:00 -0700 | [diff] [blame] | 1008 | thread_exit_check_count_(0) { |
Elliott Hughes | f5a7a47 | 2011-10-07 14:31:02 -0700 | [diff] [blame] | 1009 | CHECK_EQ((sizeof(Thread) % 4), 0U) << sizeof(Thread); |
Ian Rogers | 30e173f | 2012-09-26 14:35:03 -0700 | [diff] [blame] | 1010 | state_and_flags_.as_struct.flags = 0; |
| 1011 | state_and_flags_.as_struct.state = kNative; |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 1012 | memset(&held_mutexes_[0], 0, sizeof(held_mutexes_)); |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 1013 | } |
| 1014 | |
Elliott Hughes | 7dc5166 | 2012-05-16 14:48:43 -0700 | [diff] [blame] | 1015 | bool Thread::IsStillStarting() const { |
| 1016 | // You might think you can check whether the state is kStarting, but for much of thread startup, |
Elliott Hughes | 80537bb | 2013-01-04 16:37:26 -0800 | [diff] [blame] | 1017 | // the thread is in kNative; it might also be in kVmWait. |
Elliott Hughes | 7dc5166 | 2012-05-16 14:48:43 -0700 | [diff] [blame] | 1018 | // You might think you can check whether the peer is NULL, but the peer is actually created and |
| 1019 | // assigned fairly early on, and needs to be. |
| 1020 | // It turns out that the last thing to change is the thread name; that's a good proxy for "has |
| 1021 | // this thread _ever_ entered kRunnable". |
Elliott Hughes | 80537bb | 2013-01-04 16:37:26 -0800 | [diff] [blame] | 1022 | return (jpeer_ == NULL && opeer_ == NULL) || (*name_ == kThreadNameDuringStartup); |
Elliott Hughes | 7dc5166 | 2012-05-16 14:48:43 -0700 | [diff] [blame] | 1023 | } |
| 1024 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1025 | void Thread::AssertNoPendingException() const { |
| 1026 | if (UNLIKELY(IsExceptionPending())) { |
| 1027 | ScopedObjectAccess soa(Thread::Current()); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1028 | mirror::Throwable* exception = GetException(); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1029 | LOG(FATAL) << "No pending exception expected: " << exception->Dump(); |
| 1030 | } |
| 1031 | } |
| 1032 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1033 | static void MonitorExitVisitor(const mirror::Object* object, void* arg) NO_THREAD_SAFETY_ANALYSIS { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1034 | Thread* self = reinterpret_cast<Thread*>(arg); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1035 | mirror::Object* entered_monitor = const_cast<mirror::Object*>(object); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1036 | if (self->HoldsLock(entered_monitor)) { |
| 1037 | LOG(WARNING) << "Calling MonitorExit on object " |
| 1038 | << object << " (" << PrettyTypeOf(object) << ")" |
| 1039 | << " left locked by native thread " |
| 1040 | << *Thread::Current() << " which is detaching"; |
| 1041 | entered_monitor->MonitorExit(self); |
| 1042 | } |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 1043 | } |
| 1044 | |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 1045 | void Thread::Destroy() { |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 1046 | Thread* self = this; |
| 1047 | DCHECK_EQ(self, Thread::Current()); |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 1048 | |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1049 | if (opeer_ != NULL) { |
| 1050 | ScopedObjectAccess soa(self); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 1051 | // We may need to call user-supplied managed code, do this before final clean-up. |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1052 | HandleUncaughtExceptions(soa); |
| 1053 | RemoveFromThreadGroup(soa); |
Elliott Hughes | 534da07 | 2012-03-27 15:17:42 -0700 | [diff] [blame] | 1054 | |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1055 | // this.vmData = 0; |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1056 | soa.DecodeField(WellKnownClasses::java_lang_Thread_vmData)->SetInt(opeer_, 0); |
| 1057 | Dbg::PostThreadDeath(self); |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 1058 | |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1059 | // Thread.join() is implemented as an Object.wait() on the Thread.lock object. Signal anyone |
| 1060 | // who is waiting. |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1061 | mirror::Object* lock = |
| 1062 | soa.DecodeField(WellKnownClasses::java_lang_Thread_lock)->GetObject(opeer_); |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 1063 | // (This conditional is only needed for tests, where Thread.lock won't have been set.) |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1064 | if (lock != NULL) { |
| 1065 | lock->MonitorEnter(self); |
| 1066 | lock->Notify(); |
| 1067 | lock->MonitorExit(self); |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 1068 | } |
| 1069 | } |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 1070 | |
| 1071 | // On thread detach, all monitors entered with JNI MonitorEnter are automatically exited. |
| 1072 | if (jni_env_ != NULL) { |
| 1073 | jni_env_->monitors.VisitRoots(MonitorExitVisitor, self); |
| 1074 | } |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 1075 | } |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 1076 | |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 1077 | Thread::~Thread() { |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1078 | if (jni_env_ != NULL && jpeer_ != NULL) { |
Mathieu Chartier | dbe6f46 | 2012-09-25 16:54:50 -0700 | [diff] [blame] | 1079 | // If pthread_create fails we don't have a jni env here. |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1080 | jni_env_->DeleteGlobalRef(jpeer_); |
| 1081 | jpeer_ = NULL; |
Mathieu Chartier | dbe6f46 | 2012-09-25 16:54:50 -0700 | [diff] [blame] | 1082 | } |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1083 | opeer_ = NULL; |
Mathieu Chartier | dbe6f46 | 2012-09-25 16:54:50 -0700 | [diff] [blame] | 1084 | |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 1085 | delete jni_env_; |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 1086 | jni_env_ = NULL; |
| 1087 | |
Mathieu Chartier | dbe6f46 | 2012-09-25 16:54:50 -0700 | [diff] [blame] | 1088 | CHECK_NE(GetState(), kRunnable); |
| 1089 | // We may be deleting a still born thread. |
| 1090 | SetStateUnsafe(kTerminated); |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 1091 | |
| 1092 | delete wait_cond_; |
| 1093 | delete wait_mutex_; |
| 1094 | |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 1095 | #if !defined(ART_USE_LLVM_COMPILER) |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 1096 | delete long_jump_context_; |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 1097 | #endif |
Elliott Hughes | 475fc23 | 2011-10-25 15:00:35 -0700 | [diff] [blame] | 1098 | |
| 1099 | delete debug_invoke_req_; |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 1100 | delete instrumentation_stack_; |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 1101 | delete name_; |
Elliott Hughes | d8af159 | 2012-04-16 20:40:15 -0700 | [diff] [blame] | 1102 | |
| 1103 | TearDownAlternateSignalStack(); |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 1104 | } |
| 1105 | |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1106 | void Thread::HandleUncaughtExceptions(ScopedObjectAccess& soa) { |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1107 | if (!IsExceptionPending()) { |
| 1108 | return; |
| 1109 | } |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1110 | ScopedLocalRef<jobject> peer(jni_env_, soa.AddLocalReference<jobject>(opeer_)); |
| 1111 | ScopedThreadStateChange tsc(this, kNative); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 1112 | |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1113 | // Get and clear the exception. |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 1114 | ScopedLocalRef<jthrowable> exception(jni_env_, jni_env_->ExceptionOccurred()); |
| 1115 | jni_env_->ExceptionClear(); |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1116 | |
| 1117 | // If the thread has its own handler, use that. |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 1118 | ScopedLocalRef<jobject> handler(jni_env_, |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1119 | jni_env_->GetObjectField(peer.get(), |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 1120 | WellKnownClasses::java_lang_Thread_uncaughtHandler)); |
| 1121 | if (handler.get() == NULL) { |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1122 | // Otherwise use the thread group's default handler. |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1123 | handler.reset(jni_env_->GetObjectField(peer.get(), WellKnownClasses::java_lang_Thread_group)); |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1124 | } |
| 1125 | |
| 1126 | // Call the handler. |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 1127 | jni_env_->CallVoidMethod(handler.get(), |
| 1128 | WellKnownClasses::java_lang_Thread$UncaughtExceptionHandler_uncaughtException, |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1129 | peer.get(), exception.get()); |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1130 | |
| 1131 | // If the handler threw, clear that exception too. |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 1132 | jni_env_->ExceptionClear(); |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1133 | } |
| 1134 | |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1135 | void Thread::RemoveFromThreadGroup(ScopedObjectAccess& soa) { |
Brian Carlstrom | 4514d3c | 2011-10-21 17:01:31 -0700 | [diff] [blame] | 1136 | // this.group.removeThread(this); |
| 1137 | // group can be null if we're in the compiler or a test. |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1138 | mirror::Object* ogroup = soa.DecodeField(WellKnownClasses::java_lang_Thread_group)->GetObject(opeer_); |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1139 | if (ogroup != NULL) { |
| 1140 | ScopedLocalRef<jobject> group(soa.Env(), soa.AddLocalReference<jobject>(ogroup)); |
| 1141 | ScopedLocalRef<jobject> peer(soa.Env(), soa.AddLocalReference<jobject>(opeer_)); |
| 1142 | ScopedThreadStateChange tsc(soa.Self(), kNative); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 1143 | jni_env_->CallVoidMethod(group.get(), WellKnownClasses::java_lang_ThreadGroup_removeThread, |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1144 | peer.get()); |
Brian Carlstrom | 4514d3c | 2011-10-21 17:01:31 -0700 | [diff] [blame] | 1145 | } |
| 1146 | } |
| 1147 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1148 | size_t Thread::NumSirtReferences() { |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 1149 | size_t count = 0; |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1150 | for (StackIndirectReferenceTable* cur = top_sirt_; cur; cur = cur->GetLink()) { |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 1151 | count += cur->NumberOfReferences(); |
| 1152 | } |
| 1153 | return count; |
| 1154 | } |
| 1155 | |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1156 | bool Thread::SirtContains(jobject obj) const { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1157 | mirror::Object** sirt_entry = reinterpret_cast<mirror::Object**>(obj); |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1158 | for (StackIndirectReferenceTable* cur = top_sirt_; cur; cur = cur->GetLink()) { |
| 1159 | if (cur->Contains(sirt_entry)) { |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 1160 | return true; |
| 1161 | } |
| 1162 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1163 | // JNI code invoked from portable code uses shadow frames rather than the SIRT. |
| 1164 | return managed_stack_.ShadowFramesContain(sirt_entry); |
TDYa127 | 28f1a14 | 2012-03-15 21:51:52 -0700 | [diff] [blame] | 1165 | } |
| 1166 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1167 | void Thread::SirtVisitRoots(RootVisitor* visitor, void* arg) { |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1168 | for (StackIndirectReferenceTable* cur = top_sirt_; cur; cur = cur->GetLink()) { |
Shih-wei Liao | 8dfc9d5 | 2011-09-28 18:06:15 -0700 | [diff] [blame] | 1169 | size_t num_refs = cur->NumberOfReferences(); |
| 1170 | for (size_t j = 0; j < num_refs; j++) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1171 | mirror::Object* object = cur->GetReference(j); |
Brian Carlstrom | 5e73f9c | 2011-10-11 11:28:12 -0700 | [diff] [blame] | 1172 | if (object != NULL) { |
| 1173 | visitor(object, arg); |
| 1174 | } |
Shih-wei Liao | 8dfc9d5 | 2011-09-28 18:06:15 -0700 | [diff] [blame] | 1175 | } |
| 1176 | } |
| 1177 | } |
| 1178 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1179 | mirror::Object* Thread::DecodeJObject(jobject obj) const { |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 1180 | Locks::mutator_lock_->AssertSharedHeld(this); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1181 | if (obj == NULL) { |
| 1182 | return NULL; |
| 1183 | } |
| 1184 | IndirectRef ref = reinterpret_cast<IndirectRef>(obj); |
| 1185 | IndirectRefKind kind = GetIndirectRefKind(ref); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1186 | mirror::Object* result; |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1187 | switch (kind) { |
| 1188 | case kLocal: |
| 1189 | { |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 1190 | IndirectReferenceTable& locals = jni_env_->locals; |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1191 | result = const_cast<mirror::Object*>(locals.Get(ref)); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1192 | break; |
| 1193 | } |
| 1194 | case kGlobal: |
| 1195 | { |
| 1196 | JavaVMExt* vm = Runtime::Current()->GetJavaVM(); |
| 1197 | IndirectReferenceTable& globals = vm->globals; |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1198 | MutexLock mu(const_cast<Thread*>(this), vm->globals_lock); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1199 | result = const_cast<mirror::Object*>(globals.Get(ref)); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1200 | break; |
| 1201 | } |
| 1202 | case kWeakGlobal: |
| 1203 | { |
| 1204 | JavaVMExt* vm = Runtime::Current()->GetJavaVM(); |
| 1205 | IndirectReferenceTable& weak_globals = vm->weak_globals; |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1206 | MutexLock mu(const_cast<Thread*>(this), vm->weak_globals_lock); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1207 | result = const_cast<mirror::Object*>(weak_globals.Get(ref)); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1208 | if (result == kClearedJniWeakGlobal) { |
| 1209 | // This is a special case where it's okay to return NULL. |
| 1210 | return NULL; |
| 1211 | } |
| 1212 | break; |
| 1213 | } |
| 1214 | case kSirtOrInvalid: |
| 1215 | default: |
| 1216 | // TODO: make stack indirect reference table lookup more efficient |
| 1217 | // Check if this is a local reference in the SIRT |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1218 | if (SirtContains(obj)) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1219 | result = *reinterpret_cast<mirror::Object**>(obj); // Read from SIRT |
Elliott Hughes | c2dc62d | 2012-01-17 20:06:12 -0800 | [diff] [blame] | 1220 | } else if (Runtime::Current()->GetJavaVM()->work_around_app_jni_bugs) { |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1221 | // Assume an invalid local reference is actually a direct pointer. |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1222 | result = reinterpret_cast<mirror::Object*>(obj); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1223 | } else { |
Elliott Hughes | a250199 | 2011-08-26 19:39:54 -0700 | [diff] [blame] | 1224 | result = kInvalidIndirectRefObject; |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1225 | } |
| 1226 | } |
| 1227 | |
| 1228 | if (result == NULL) { |
Elliott Hughes | 3f6635a | 2012-06-19 13:37:49 -0700 | [diff] [blame] | 1229 | JniAbortF(NULL, "use of deleted %s %p", ToStr<IndirectRefKind>(kind).c_str(), obj); |
Elliott Hughes | a250199 | 2011-08-26 19:39:54 -0700 | [diff] [blame] | 1230 | } else { |
| 1231 | if (result != kInvalidIndirectRefObject) { |
Elliott Hughes | b3bd5f0 | 2012-03-08 21:05:27 -0800 | [diff] [blame] | 1232 | Runtime::Current()->GetHeap()->VerifyObject(result); |
Elliott Hughes | a250199 | 2011-08-26 19:39:54 -0700 | [diff] [blame] | 1233 | } |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1234 | } |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1235 | return result; |
| 1236 | } |
| 1237 | |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 1238 | // Implements java.lang.Thread.interrupted. |
| 1239 | bool Thread::Interrupted() { |
Ian Rogers | 50b35e2 | 2012-10-04 10:09:15 -0700 | [diff] [blame] | 1240 | MutexLock mu(Thread::Current(), *wait_mutex_); |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 1241 | bool interrupted = interrupted_; |
| 1242 | interrupted_ = false; |
| 1243 | return interrupted; |
| 1244 | } |
| 1245 | |
| 1246 | // Implements java.lang.Thread.isInterrupted. |
| 1247 | bool Thread::IsInterrupted() { |
Ian Rogers | 50b35e2 | 2012-10-04 10:09:15 -0700 | [diff] [blame] | 1248 | MutexLock mu(Thread::Current(), *wait_mutex_); |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 1249 | return interrupted_; |
| 1250 | } |
| 1251 | |
| 1252 | void Thread::Interrupt() { |
Ian Rogers | c604d73 | 2012-10-14 16:09:54 -0700 | [diff] [blame] | 1253 | Thread* self = Thread::Current(); |
| 1254 | MutexLock mu(self, *wait_mutex_); |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 1255 | if (interrupted_) { |
| 1256 | return; |
| 1257 | } |
| 1258 | interrupted_ = true; |
Ian Rogers | c604d73 | 2012-10-14 16:09:54 -0700 | [diff] [blame] | 1259 | NotifyLocked(self); |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 1260 | } |
| 1261 | |
| 1262 | void Thread::Notify() { |
Ian Rogers | c604d73 | 2012-10-14 16:09:54 -0700 | [diff] [blame] | 1263 | Thread* self = Thread::Current(); |
| 1264 | MutexLock mu(self, *wait_mutex_); |
| 1265 | NotifyLocked(self); |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 1266 | } |
| 1267 | |
Ian Rogers | c604d73 | 2012-10-14 16:09:54 -0700 | [diff] [blame] | 1268 | void Thread::NotifyLocked(Thread* self) { |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 1269 | if (wait_monitor_ != NULL) { |
Ian Rogers | c604d73 | 2012-10-14 16:09:54 -0700 | [diff] [blame] | 1270 | wait_cond_->Signal(self); |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 1271 | } |
| 1272 | } |
| 1273 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1274 | class CountStackDepthVisitor : public StackVisitor { |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1275 | public: |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 1276 | CountStackDepthVisitor(Thread* thread) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 1277 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 1278 | : StackVisitor(thread, NULL), |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 1279 | depth_(0), skip_depth_(0), skipping_(true) {} |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1280 | |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 1281 | bool VisitFrame() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1282 | // We want to skip frames up to and including the exception's constructor. |
Ian Rogers | 9086572 | 2011-09-19 11:11:44 -0700 | [diff] [blame] | 1283 | // Note we also skip the frame if it doesn't have a method (namely the callee |
| 1284 | // save frame) |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1285 | mirror::AbstractMethod* m = GetMethod(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1286 | if (skipping_ && !m->IsRuntimeMethod() && |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1287 | !mirror::Throwable::GetJavaLangThrowable()->IsAssignableFrom(m->GetDeclaringClass())) { |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1288 | skipping_ = false; |
| 1289 | } |
| 1290 | if (!skipping_) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1291 | if (!m->IsRuntimeMethod()) { // Ignore runtime frames (in particular callee save). |
Ian Rogers | 6b0870d | 2011-12-15 19:38:12 -0800 | [diff] [blame] | 1292 | ++depth_; |
| 1293 | } |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1294 | } else { |
| 1295 | ++skip_depth_; |
| 1296 | } |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1297 | return true; |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 1298 | } |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1299 | |
| 1300 | int GetDepth() const { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1301 | return depth_; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1302 | } |
| 1303 | |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1304 | int GetSkipDepth() const { |
| 1305 | return skip_depth_; |
| 1306 | } |
| 1307 | |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1308 | private: |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1309 | uint32_t depth_; |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1310 | uint32_t skip_depth_; |
| 1311 | bool skipping_; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1312 | }; |
| 1313 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1314 | class BuildInternalStackTraceVisitor : public StackVisitor { |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1315 | public: |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 1316 | explicit BuildInternalStackTraceVisitor(Thread* self, Thread* thread, int skip_depth) |
| 1317 | : StackVisitor(thread, NULL), self_(self), |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 1318 | skip_depth_(skip_depth), count_(0), dex_pc_trace_(NULL), method_trace_(NULL) {} |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 1319 | |
Ian Rogers | 1f53934 | 2012-10-03 21:09:42 -0700 | [diff] [blame] | 1320 | bool Init(int depth) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 1321 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1322 | // Allocate method trace with an extra slot that will hold the PC trace |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1323 | SirtRef<mirror::ObjectArray<mirror::Object> > |
Ian Rogers | 1f53934 | 2012-10-03 21:09:42 -0700 | [diff] [blame] | 1324 | method_trace(self_, |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1325 | Runtime::Current()->GetClassLinker()->AllocObjectArray<mirror::Object>(self_, |
| 1326 | depth + 1)); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1327 | if (method_trace.get() == NULL) { |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 1328 | return false; |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1329 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1330 | mirror::IntArray* dex_pc_trace = mirror::IntArray::Alloc(self_, depth); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1331 | if (dex_pc_trace == NULL) { |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 1332 | return false; |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1333 | } |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1334 | // Save PC trace in last element of method trace, also places it into the |
| 1335 | // object graph. |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1336 | method_trace->Set(depth, dex_pc_trace); |
| 1337 | // Set the Object*s and assert that no thread suspension is now possible. |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 1338 | const char* last_no_suspend_cause = |
Ian Rogers | 1f53934 | 2012-10-03 21:09:42 -0700 | [diff] [blame] | 1339 | self_->StartAssertNoThreadSuspension("Building internal stack trace"); |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 1340 | CHECK(last_no_suspend_cause == NULL) << last_no_suspend_cause; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1341 | method_trace_ = method_trace.get(); |
| 1342 | dex_pc_trace_ = dex_pc_trace; |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 1343 | return true; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1344 | } |
| 1345 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1346 | virtual ~BuildInternalStackTraceVisitor() { |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 1347 | if (method_trace_ != NULL) { |
Ian Rogers | 1f53934 | 2012-10-03 21:09:42 -0700 | [diff] [blame] | 1348 | self_->EndAssertNoThreadSuspension(NULL); |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 1349 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1350 | } |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1351 | |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 1352 | bool VisitFrame() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1353 | if (method_trace_ == NULL || dex_pc_trace_ == NULL) { |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1354 | return true; // We're probably trying to fillInStackTrace for an OutOfMemoryError. |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1355 | } |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1356 | if (skip_depth_ > 0) { |
| 1357 | skip_depth_--; |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1358 | return true; |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1359 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1360 | mirror::AbstractMethod* m = GetMethod(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1361 | if (m->IsRuntimeMethod()) { |
| 1362 | return true; // Ignore runtime frames (in particular callee save). |
Ian Rogers | 6b0870d | 2011-12-15 19:38:12 -0800 | [diff] [blame] | 1363 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1364 | method_trace_->Set(count_, m); |
| 1365 | dex_pc_trace_->Set(count_, GetDexPc()); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1366 | ++count_; |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1367 | return true; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1368 | } |
| 1369 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1370 | mirror::ObjectArray<mirror::Object>* GetInternalStackTrace() const { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1371 | return method_trace_; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1372 | } |
| 1373 | |
| 1374 | private: |
Ian Rogers | 1f53934 | 2012-10-03 21:09:42 -0700 | [diff] [blame] | 1375 | Thread* const self_; |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1376 | // How many more frames to skip. |
| 1377 | int32_t skip_depth_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1378 | // Current position down stack trace. |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1379 | uint32_t count_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1380 | // Array of dex PC values. |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1381 | mirror::IntArray* dex_pc_trace_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1382 | // An array of the methods on the stack, the last entry is a reference to the PC trace. |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1383 | mirror::ObjectArray<mirror::Object>* method_trace_; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1384 | }; |
| 1385 | |
Ian Rogers | 64b6d14 | 2012-10-29 16:34:15 -0700 | [diff] [blame] | 1386 | jobject Thread::CreateInternalStackTrace(const ScopedObjectAccessUnchecked& soa) const { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1387 | // Compute depth of stack |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 1388 | CountStackDepthVisitor count_visitor(const_cast<Thread*>(this)); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1389 | count_visitor.WalkStack(); |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1390 | int32_t depth = count_visitor.GetDepth(); |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1391 | int32_t skip_depth = count_visitor.GetSkipDepth(); |
Shih-wei Liao | 4417536 | 2011-08-28 16:59:17 -0700 | [diff] [blame] | 1392 | |
Ian Rogers | 1f53934 | 2012-10-03 21:09:42 -0700 | [diff] [blame] | 1393 | // Build internal stack trace. |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 1394 | BuildInternalStackTraceVisitor build_trace_visitor(soa.Self(), const_cast<Thread*>(this), |
| 1395 | skip_depth); |
Ian Rogers | 1f53934 | 2012-10-03 21:09:42 -0700 | [diff] [blame] | 1396 | if (!build_trace_visitor.Init(depth)) { |
| 1397 | return NULL; // Allocation failed. |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 1398 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1399 | build_trace_visitor.WalkStack(); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1400 | mirror::ObjectArray<mirror::Object>* trace = build_trace_visitor.GetInternalStackTrace(); |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 1401 | if (kIsDebugBuild) { |
| 1402 | for (int32_t i = 0; i < trace->GetLength(); ++i) { |
| 1403 | CHECK(trace->Get(i) != NULL); |
| 1404 | } |
| 1405 | } |
| 1406 | return soa.AddLocalReference<jobjectArray>(trace); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1407 | } |
| 1408 | |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1409 | jobjectArray Thread::InternalStackTraceToStackTraceElementArray(JNIEnv* env, jobject internal, |
| 1410 | jobjectArray output_array, int* stack_depth) { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1411 | // Transition into runnable state to work on Object*/Array* |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1412 | ScopedObjectAccess soa(env); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1413 | // Decode the internal stack trace into the depth, method trace and PC trace |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1414 | mirror::ObjectArray<mirror::Object>* method_trace = |
| 1415 | soa.Decode<mirror::ObjectArray<mirror::Object>*>(internal); |
Ian Rogers | 9074b99 | 2011-10-26 17:41:55 -0700 | [diff] [blame] | 1416 | int32_t depth = method_trace->GetLength() - 1; |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1417 | mirror::IntArray* pc_trace = down_cast<mirror::IntArray*>(method_trace->Get(depth)); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1418 | |
| 1419 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 1420 | |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1421 | jobjectArray result; |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1422 | mirror::ObjectArray<mirror::StackTraceElement>* java_traces; |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1423 | if (output_array != NULL) { |
| 1424 | // Reuse the array we were given. |
| 1425 | result = output_array; |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1426 | java_traces = soa.Decode<mirror::ObjectArray<mirror::StackTraceElement>*>(output_array); |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1427 | // ...adjusting the number of frames we'll write to not exceed the array length. |
| 1428 | depth = std::min(depth, java_traces->GetLength()); |
| 1429 | } else { |
| 1430 | // Create java_trace array and place in local reference table |
Ian Rogers | 50b35e2 | 2012-10-04 10:09:15 -0700 | [diff] [blame] | 1431 | java_traces = class_linker->AllocStackTraceElementArray(soa.Self(), depth); |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1432 | if (java_traces == NULL) { |
| 1433 | return NULL; |
| 1434 | } |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1435 | result = soa.AddLocalReference<jobjectArray>(java_traces); |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1436 | } |
| 1437 | |
| 1438 | if (stack_depth != NULL) { |
| 1439 | *stack_depth = depth; |
| 1440 | } |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 1441 | |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1442 | MethodHelper mh; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1443 | for (int32_t i = 0; i < depth; ++i) { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1444 | // Prepare parameters for StackTraceElement(String cls, String method, String file, int line) |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1445 | mirror::AbstractMethod* method = down_cast<mirror::AbstractMethod*>(method_trace->Get(i)); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1446 | mh.ChangeMethod(method); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1447 | uint32_t dex_pc = pc_trace->Get(i); |
| 1448 | int32_t line_number = mh.GetLineNumFromDexPC(dex_pc); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1449 | // Allocate element, potentially triggering GC |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1450 | // TODO: reuse class_name_object via Class::name_? |
Ian Rogers | 4860131 | 2011-12-07 16:45:19 -0800 | [diff] [blame] | 1451 | const char* descriptor = mh.GetDeclaringClassDescriptor(); |
| 1452 | CHECK(descriptor != NULL); |
| 1453 | std::string class_name(PrettyDescriptor(descriptor)); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1454 | SirtRef<mirror::String> class_name_object(soa.Self(), |
| 1455 | mirror::String::AllocFromModifiedUtf8(soa.Self(), |
| 1456 | class_name.c_str())); |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1457 | if (class_name_object.get() == NULL) { |
| 1458 | return NULL; |
| 1459 | } |
Ian Rogers | 4860131 | 2011-12-07 16:45:19 -0800 | [diff] [blame] | 1460 | const char* method_name = mh.GetName(); |
| 1461 | CHECK(method_name != NULL); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1462 | SirtRef<mirror::String> method_name_object(soa.Self(), |
| 1463 | mirror::String::AllocFromModifiedUtf8(soa.Self(), |
| 1464 | method_name)); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1465 | if (method_name_object.get() == NULL) { |
| 1466 | return NULL; |
| 1467 | } |
Ian Rogers | 4860131 | 2011-12-07 16:45:19 -0800 | [diff] [blame] | 1468 | const char* source_file = mh.GetDeclaringClassSourceFile(); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1469 | SirtRef<mirror::String> source_name_object(soa.Self(), mirror::String::AllocFromModifiedUtf8(soa.Self(), |
| 1470 | source_file)); |
| 1471 | mirror::StackTraceElement* obj = mirror::StackTraceElement::Alloc(soa.Self(), |
| 1472 | class_name_object.get(), |
| 1473 | method_name_object.get(), |
| 1474 | source_name_object.get(), |
| 1475 | line_number); |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1476 | if (obj == NULL) { |
| 1477 | return NULL; |
| 1478 | } |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1479 | #ifdef MOVING_GARBAGE_COLLECTOR |
| 1480 | // Re-read after potential GC |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1481 | java_traces = Decode<ObjectArray<Object>*>(soa.Env(), result); |
| 1482 | method_trace = down_cast<ObjectArray<Object>*>(Decode<Object*>(soa.Env(), internal)); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1483 | pc_trace = down_cast<IntArray*>(method_trace->Get(depth)); |
| 1484 | #endif |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 1485 | java_traces->Set(i, obj); |
| 1486 | } |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1487 | return result; |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 1488 | } |
| 1489 | |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 1490 | void Thread::ThrowNewExceptionF(const char* exception_class_descriptor, const char* fmt, ...) { |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 1491 | va_list args; |
| 1492 | va_start(args, fmt); |
Elliott Hughes | 4a2b417 | 2011-09-20 17:08:25 -0700 | [diff] [blame] | 1493 | ThrowNewExceptionV(exception_class_descriptor, fmt, args); |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 1494 | va_end(args); |
Elliott Hughes | 4a2b417 | 2011-09-20 17:08:25 -0700 | [diff] [blame] | 1495 | } |
| 1496 | |
| 1497 | void Thread::ThrowNewExceptionV(const char* exception_class_descriptor, const char* fmt, va_list ap) { |
| 1498 | std::string msg; |
| 1499 | StringAppendV(&msg, fmt, ap); |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 1500 | ThrowNewException(exception_class_descriptor, msg.c_str()); |
| 1501 | } |
Elliott Hughes | 37f7a40 | 2011-08-22 18:56:01 -0700 | [diff] [blame] | 1502 | |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 1503 | void Thread::ThrowNewException(const char* exception_class_descriptor, const char* msg) { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1504 | AssertNoPendingException(); // Callers should either clear or call ThrowNewWrappedException. |
Elliott Hughes | a4f9474 | 2012-05-29 16:28:38 -0700 | [diff] [blame] | 1505 | ThrowNewWrappedException(exception_class_descriptor, msg); |
| 1506 | } |
| 1507 | |
| 1508 | void Thread::ThrowNewWrappedException(const char* exception_class_descriptor, const char* msg) { |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 1509 | // Convert "Ljava/lang/Exception;" into JNI-style "java/lang/Exception". |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 1510 | CHECK_EQ('L', exception_class_descriptor[0]); |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 1511 | std::string descriptor(exception_class_descriptor + 1); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 1512 | CHECK_EQ(';', descriptor[descriptor.length() - 1]); |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 1513 | descriptor.erase(descriptor.length() - 1); |
| 1514 | |
| 1515 | JNIEnv* env = GetJniEnv(); |
Elliott Hughes | a4f9474 | 2012-05-29 16:28:38 -0700 | [diff] [blame] | 1516 | jobject cause = env->ExceptionOccurred(); |
| 1517 | env->ExceptionClear(); |
| 1518 | |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1519 | ScopedLocalRef<jclass> exception_class(env, env->FindClass(descriptor.c_str())); |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1520 | if (exception_class.get() == NULL) { |
| 1521 | LOG(ERROR) << "Couldn't throw new " << descriptor << " because JNI FindClass failed: " |
| 1522 | << PrettyTypeOf(GetException()); |
| 1523 | CHECK(IsExceptionPending()); |
| 1524 | return; |
| 1525 | } |
Brian Carlstrom | ebd1fd2 | 2011-12-07 15:46:26 -0800 | [diff] [blame] | 1526 | if (!Runtime::Current()->IsStarted()) { |
| 1527 | // Something is trying to throw an exception without a started |
| 1528 | // runtime, which is the common case in the compiler. We won't be |
| 1529 | // able to invoke the constructor of the exception, so use |
| 1530 | // AllocObject which will not invoke a constructor. |
| 1531 | ScopedLocalRef<jthrowable> exception( |
| 1532 | env, reinterpret_cast<jthrowable>(env->AllocObject(exception_class.get()))); |
| 1533 | if (exception.get() != NULL) { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1534 | ScopedObjectAccessUnchecked soa(env); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1535 | mirror::Throwable* t = |
| 1536 | reinterpret_cast<mirror::Throwable*>(soa.Self()->DecodeJObject(exception.get())); |
| 1537 | t->SetDetailMessage(mirror::String::AllocFromModifiedUtf8(soa.Self(), msg)); |
Ian Rogers | 64b6d14 | 2012-10-29 16:34:15 -0700 | [diff] [blame] | 1538 | if (cause != NULL) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1539 | t->SetCause(soa.Decode<mirror::Throwable*>(cause)); |
Ian Rogers | 64b6d14 | 2012-10-29 16:34:15 -0700 | [diff] [blame] | 1540 | } |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1541 | soa.Self()->SetException(t); |
Brian Carlstrom | ebd1fd2 | 2011-12-07 15:46:26 -0800 | [diff] [blame] | 1542 | } else { |
| 1543 | LOG(ERROR) << "Couldn't throw new " << descriptor << " because JNI AllocObject failed: " |
| 1544 | << PrettyTypeOf(GetException()); |
| 1545 | CHECK(IsExceptionPending()); |
| 1546 | } |
| 1547 | return; |
| 1548 | } |
Elliott Hughes | a4f9474 | 2012-05-29 16:28:38 -0700 | [diff] [blame] | 1549 | int rc = ::art::ThrowNewException(env, exception_class.get(), msg, cause); |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1550 | if (rc != JNI_OK) { |
| 1551 | LOG(ERROR) << "Couldn't throw new " << descriptor << " because JNI ThrowNew failed: " |
| 1552 | << PrettyTypeOf(GetException()); |
| 1553 | CHECK(IsExceptionPending()); |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1554 | } |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 1555 | } |
| 1556 | |
Elliott Hughes | 2ced6a5 | 2011-10-16 18:44:48 -0700 | [diff] [blame] | 1557 | void Thread::ThrowOutOfMemoryError(const char* msg) { |
| 1558 | LOG(ERROR) << StringPrintf("Throwing OutOfMemoryError \"%s\"%s", |
| 1559 | msg, (throwing_OutOfMemoryError_ ? " (recursive case)" : "")); |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1560 | if (!throwing_OutOfMemoryError_) { |
| 1561 | throwing_OutOfMemoryError_ = true; |
Elliott Hughes | 57aba86 | 2012-06-20 14:00:47 -0700 | [diff] [blame] | 1562 | ThrowNewException("Ljava/lang/OutOfMemoryError;", msg); |
Elliott Hughes | 418dfe7 | 2011-10-06 18:56:27 -0700 | [diff] [blame] | 1563 | } else { |
Elliott Hughes | 225f5a1 | 2012-06-11 11:23:48 -0700 | [diff] [blame] | 1564 | Dump(LOG(ERROR)); // The pre-allocated OOME has no stack, so help out and log one. |
| 1565 | SetException(Runtime::Current()->GetPreAllocatedOutOfMemoryError()); |
Elliott Hughes | 418dfe7 | 2011-10-06 18:56:27 -0700 | [diff] [blame] | 1566 | } |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1567 | throwing_OutOfMemoryError_ = false; |
Elliott Hughes | 79082e3 | 2011-08-25 12:07:32 -0700 | [diff] [blame] | 1568 | } |
| 1569 | |
Elliott Hughes | 498508c | 2011-10-17 14:58:22 -0700 | [diff] [blame] | 1570 | Thread* Thread::CurrentFromGdb() { |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1571 | return Thread::Current(); |
| 1572 | } |
| 1573 | |
| 1574 | void Thread::DumpFromGdb() const { |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 1575 | std::ostringstream ss; |
| 1576 | Dump(ss); |
Elliott Hughes | 9557241 | 2011-12-13 18:14:20 -0800 | [diff] [blame] | 1577 | std::string str(ss.str()); |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 1578 | // log to stderr for debugging command line processes |
| 1579 | std::cerr << str; |
| 1580 | #ifdef HAVE_ANDROID_OS |
| 1581 | // log to logcat for debugging frameworks processes |
| 1582 | LOG(INFO) << str; |
| 1583 | #endif |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1584 | } |
| 1585 | |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 1586 | struct EntryPointInfo { |
| 1587 | uint32_t offset; |
| 1588 | const char* name; |
| 1589 | }; |
| 1590 | #define ENTRY_POINT_INFO(x) { ENTRYPOINT_OFFSET(x), #x } |
| 1591 | static const EntryPointInfo gThreadEntryPointInfo[] = { |
| 1592 | ENTRY_POINT_INFO(pAllocArrayFromCode), |
| 1593 | ENTRY_POINT_INFO(pAllocArrayFromCodeWithAccessCheck), |
| 1594 | ENTRY_POINT_INFO(pAllocObjectFromCode), |
| 1595 | ENTRY_POINT_INFO(pAllocObjectFromCodeWithAccessCheck), |
| 1596 | ENTRY_POINT_INFO(pCheckAndAllocArrayFromCode), |
| 1597 | ENTRY_POINT_INFO(pCheckAndAllocArrayFromCodeWithAccessCheck), |
| 1598 | ENTRY_POINT_INFO(pInstanceofNonTrivialFromCode), |
| 1599 | ENTRY_POINT_INFO(pCanPutArrayElementFromCode), |
| 1600 | ENTRY_POINT_INFO(pCheckCastFromCode), |
| 1601 | ENTRY_POINT_INFO(pDebugMe), |
| 1602 | ENTRY_POINT_INFO(pUpdateDebuggerFromCode), |
| 1603 | ENTRY_POINT_INFO(pInitializeStaticStorage), |
| 1604 | ENTRY_POINT_INFO(pInitializeTypeAndVerifyAccessFromCode), |
| 1605 | ENTRY_POINT_INFO(pInitializeTypeFromCode), |
| 1606 | ENTRY_POINT_INFO(pResolveStringFromCode), |
| 1607 | ENTRY_POINT_INFO(pSet32Instance), |
| 1608 | ENTRY_POINT_INFO(pSet32Static), |
| 1609 | ENTRY_POINT_INFO(pSet64Instance), |
| 1610 | ENTRY_POINT_INFO(pSet64Static), |
| 1611 | ENTRY_POINT_INFO(pSetObjInstance), |
| 1612 | ENTRY_POINT_INFO(pSetObjStatic), |
| 1613 | ENTRY_POINT_INFO(pGet32Instance), |
| 1614 | ENTRY_POINT_INFO(pGet32Static), |
| 1615 | ENTRY_POINT_INFO(pGet64Instance), |
| 1616 | ENTRY_POINT_INFO(pGet64Static), |
| 1617 | ENTRY_POINT_INFO(pGetObjInstance), |
| 1618 | ENTRY_POINT_INFO(pGetObjStatic), |
| 1619 | ENTRY_POINT_INFO(pHandleFillArrayDataFromCode), |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 1620 | ENTRY_POINT_INFO(pFindNativeMethod), |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1621 | ENTRY_POINT_INFO(pJniMethodStart), |
| 1622 | ENTRY_POINT_INFO(pJniMethodStartSynchronized), |
| 1623 | ENTRY_POINT_INFO(pJniMethodEnd), |
| 1624 | ENTRY_POINT_INFO(pJniMethodEndSynchronized), |
| 1625 | ENTRY_POINT_INFO(pJniMethodEndWithReference), |
| 1626 | ENTRY_POINT_INFO(pJniMethodEndWithReferenceSynchronized), |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 1627 | ENTRY_POINT_INFO(pLockObjectFromCode), |
| 1628 | ENTRY_POINT_INFO(pUnlockObjectFromCode), |
| 1629 | ENTRY_POINT_INFO(pCmpgDouble), |
| 1630 | ENTRY_POINT_INFO(pCmpgFloat), |
| 1631 | ENTRY_POINT_INFO(pCmplDouble), |
| 1632 | ENTRY_POINT_INFO(pCmplFloat), |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 1633 | ENTRY_POINT_INFO(pFmod), |
Ian Rogers | 0183dd7 | 2012-09-17 23:06:51 -0700 | [diff] [blame] | 1634 | ENTRY_POINT_INFO(pSqrt), |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 1635 | ENTRY_POINT_INFO(pL2d), |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 1636 | ENTRY_POINT_INFO(pFmodf), |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 1637 | ENTRY_POINT_INFO(pL2f), |
| 1638 | ENTRY_POINT_INFO(pD2iz), |
| 1639 | ENTRY_POINT_INFO(pF2iz), |
| 1640 | ENTRY_POINT_INFO(pIdivmod), |
| 1641 | ENTRY_POINT_INFO(pD2l), |
| 1642 | ENTRY_POINT_INFO(pF2l), |
| 1643 | ENTRY_POINT_INFO(pLdiv), |
| 1644 | ENTRY_POINT_INFO(pLdivmod), |
| 1645 | ENTRY_POINT_INFO(pLmul), |
| 1646 | ENTRY_POINT_INFO(pShlLong), |
| 1647 | ENTRY_POINT_INFO(pShrLong), |
| 1648 | ENTRY_POINT_INFO(pUshrLong), |
| 1649 | ENTRY_POINT_INFO(pIndexOf), |
| 1650 | ENTRY_POINT_INFO(pMemcmp16), |
| 1651 | ENTRY_POINT_INFO(pStringCompareTo), |
| 1652 | ENTRY_POINT_INFO(pMemcpy), |
| 1653 | ENTRY_POINT_INFO(pUnresolvedDirectMethodTrampolineFromCode), |
| 1654 | ENTRY_POINT_INFO(pInvokeDirectTrampolineWithAccessCheck), |
| 1655 | ENTRY_POINT_INFO(pInvokeInterfaceTrampoline), |
| 1656 | ENTRY_POINT_INFO(pInvokeInterfaceTrampolineWithAccessCheck), |
| 1657 | ENTRY_POINT_INFO(pInvokeStaticTrampolineWithAccessCheck), |
| 1658 | ENTRY_POINT_INFO(pInvokeSuperTrampolineWithAccessCheck), |
| 1659 | ENTRY_POINT_INFO(pInvokeVirtualTrampolineWithAccessCheck), |
| 1660 | ENTRY_POINT_INFO(pCheckSuspendFromCode), |
| 1661 | ENTRY_POINT_INFO(pTestSuspendFromCode), |
| 1662 | ENTRY_POINT_INFO(pDeliverException), |
| 1663 | ENTRY_POINT_INFO(pThrowAbstractMethodErrorFromCode), |
| 1664 | ENTRY_POINT_INFO(pThrowArrayBoundsFromCode), |
| 1665 | ENTRY_POINT_INFO(pThrowDivZeroFromCode), |
| 1666 | ENTRY_POINT_INFO(pThrowNoSuchMethodFromCode), |
| 1667 | ENTRY_POINT_INFO(pThrowNullPointerFromCode), |
| 1668 | ENTRY_POINT_INFO(pThrowStackOverflowFromCode), |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 1669 | }; |
| 1670 | #undef ENTRY_POINT_INFO |
| 1671 | |
Elliott Hughes | 28fa76d | 2012-04-09 17:31:46 -0700 | [diff] [blame] | 1672 | void Thread::DumpThreadOffset(std::ostream& os, uint32_t offset, size_t size_of_pointers) { |
| 1673 | CHECK_EQ(size_of_pointers, 4U); // TODO: support 64-bit targets. |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 1674 | |
| 1675 | #define DO_THREAD_OFFSET(x) if (offset == static_cast<uint32_t>(OFFSETOF_VOLATILE_MEMBER(Thread, x))) { os << # x; return; } |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 1676 | DO_THREAD_OFFSET(state_and_flags_); |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 1677 | DO_THREAD_OFFSET(card_table_); |
| 1678 | DO_THREAD_OFFSET(exception_); |
Ian Rogers | 07ec8e1 | 2012-12-01 01:26:51 -0800 | [diff] [blame] | 1679 | DO_THREAD_OFFSET(opeer_); |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 1680 | DO_THREAD_OFFSET(jni_env_); |
| 1681 | DO_THREAD_OFFSET(self_); |
| 1682 | DO_THREAD_OFFSET(stack_end_); |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 1683 | DO_THREAD_OFFSET(suspend_count_); |
| 1684 | DO_THREAD_OFFSET(thin_lock_id_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1685 | //DO_THREAD_OFFSET(top_of_managed_stack_); |
| 1686 | //DO_THREAD_OFFSET(top_of_managed_stack_pc_); |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 1687 | DO_THREAD_OFFSET(top_sirt_); |
Elliott Hughes | 28fa76d | 2012-04-09 17:31:46 -0700 | [diff] [blame] | 1688 | #undef DO_THREAD_OFFSET |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 1689 | |
| 1690 | size_t entry_point_count = arraysize(gThreadEntryPointInfo); |
| 1691 | CHECK_EQ(entry_point_count * size_of_pointers, sizeof(EntryPoints)); |
| 1692 | uint32_t expected_offset = OFFSETOF_MEMBER(Thread, entrypoints_); |
| 1693 | for (size_t i = 0; i < entry_point_count; ++i) { |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 1694 | CHECK_EQ(gThreadEntryPointInfo[i].offset, expected_offset) << gThreadEntryPointInfo[i].name; |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 1695 | expected_offset += size_of_pointers; |
| 1696 | if (gThreadEntryPointInfo[i].offset == offset) { |
| 1697 | os << gThreadEntryPointInfo[i].name; |
| 1698 | return; |
| 1699 | } |
| 1700 | } |
| 1701 | os << offset; |
Elliott Hughes | 28fa76d | 2012-04-09 17:31:46 -0700 | [diff] [blame] | 1702 | } |
| 1703 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1704 | static const bool kDebugExceptionDelivery = false; |
| 1705 | class CatchBlockStackVisitor : public StackVisitor { |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1706 | public: |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1707 | CatchBlockStackVisitor(Thread* self, mirror::Throwable* exception) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 1708 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 1709 | : StackVisitor(self, self->GetLongJumpContext()), |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1710 | self_(self), exception_(exception), to_find_(exception->GetClass()), throw_method_(NULL), |
| 1711 | throw_frame_id_(0), throw_dex_pc_(0), handler_quick_frame_(NULL), |
| 1712 | handler_quick_frame_pc_(0), handler_dex_pc_(0), native_method_count_(0), |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1713 | method_tracing_active_(Runtime::Current()->IsMethodTracingActive()) { |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 1714 | // Exception not in root sets, can't allow GC. |
| 1715 | last_no_assert_suspension_cause_ = self->StartAssertNoThreadSuspension("Finding catch block"); |
| 1716 | } |
| 1717 | |
| 1718 | ~CatchBlockStackVisitor() { |
| 1719 | LOG(FATAL) << "UNREACHABLE"; // Expected to take long jump. |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1720 | } |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1721 | |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 1722 | bool VisitFrame() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) |
| 1723 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1724 | mirror::AbstractMethod* method = GetMethod(); |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1725 | if (method == NULL) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1726 | // This is the upcall, we remember the frame and last pc so that we may long jump to them. |
| 1727 | handler_quick_frame_pc_ = GetCurrentQuickFramePc(); |
| 1728 | handler_quick_frame_ = GetCurrentQuickFrame(); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1729 | return false; // End stack walk. |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1730 | } |
| 1731 | uint32_t dex_pc = DexFile::kDexNoIndex; |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1732 | if (method->IsRuntimeMethod()) { |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1733 | // ignore callee save method |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1734 | DCHECK(method->IsCalleeSaveMethod()); |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1735 | } else { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1736 | if (throw_method_ == NULL) { |
| 1737 | throw_method_ = method; |
| 1738 | throw_frame_id_ = GetFrameId(); |
| 1739 | throw_dex_pc_ = GetDexPc(); |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1740 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1741 | if (method->IsNative()) { |
| 1742 | native_method_count_++; |
| 1743 | } else { |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 1744 | // Unwind stack when an exception occurs during instrumentation |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 1745 | if (UNLIKELY(method_tracing_active_ && |
| 1746 | GetInstrumentationExitPc() == GetCurrentQuickFramePc())) { |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 1747 | uintptr_t pc = InstrumentationMethodUnwindFromCode(Thread::Current()); |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 1748 | dex_pc = method->ToDexPc(pc); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1749 | } else { |
| 1750 | dex_pc = GetDexPc(); |
| 1751 | } |
| 1752 | } |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1753 | } |
| 1754 | if (dex_pc != DexFile::kDexNoIndex) { |
| 1755 | uint32_t found_dex_pc = method->FindCatchBlock(to_find_, dex_pc); |
| 1756 | if (found_dex_pc != DexFile::kDexNoIndex) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1757 | handler_dex_pc_ = found_dex_pc; |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 1758 | handler_quick_frame_pc_ = method->ToNativePc(found_dex_pc); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1759 | handler_quick_frame_ = GetCurrentQuickFrame(); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1760 | return false; // End stack walk. |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1761 | } |
| 1762 | } |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1763 | return true; // Continue stack walk. |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1764 | } |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1765 | |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 1766 | void DoLongJump() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1767 | mirror::AbstractMethod* catch_method = *handler_quick_frame_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1768 | if (kDebugExceptionDelivery) { |
| 1769 | if (catch_method == NULL) { |
| 1770 | LOG(INFO) << "Handler is upcall"; |
| 1771 | } else { |
Ian Rogers | 4445a7e | 2012-10-05 17:19:13 -0700 | [diff] [blame] | 1772 | const DexFile& dex_file = *catch_method->GetDeclaringClass()->GetDexCache()->GetDexFile(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1773 | int line_number = dex_file.GetLineNumFromPC(catch_method, handler_dex_pc_); |
| 1774 | LOG(INFO) << "Handler: " << PrettyMethod(catch_method) << " (line: " << line_number << ")"; |
| 1775 | } |
| 1776 | } |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 1777 | self_->SetException(exception_); // Exception back in root set. |
| 1778 | self_->EndAssertNoThreadSuspension(last_no_assert_suspension_cause_); |
jeffhao | a77f0f6 | 2012-12-05 17:19:31 -0800 | [diff] [blame] | 1779 | // Do debugger PostException after allowing thread suspension again. |
| 1780 | Dbg::PostException(self_, throw_frame_id_, throw_method_, throw_dex_pc_, |
| 1781 | catch_method, handler_dex_pc_, exception_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1782 | // Place context back on thread so it will be available when we continue. |
| 1783 | self_->ReleaseLongJumpContext(context_); |
| 1784 | context_->SetSP(reinterpret_cast<uintptr_t>(handler_quick_frame_)); |
| 1785 | CHECK_NE(handler_quick_frame_pc_, 0u); |
| 1786 | context_->SetPC(handler_quick_frame_pc_); |
| 1787 | context_->SmashCallerSaves(); |
| 1788 | context_->DoLongJump(); |
| 1789 | } |
| 1790 | |
| 1791 | private: |
| 1792 | Thread* self_; |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1793 | mirror::Throwable* exception_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1794 | // The type of the exception catch block to find. |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1795 | mirror::Class* to_find_; |
| 1796 | mirror::AbstractMethod* throw_method_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1797 | JDWP::FrameId throw_frame_id_; |
| 1798 | uint32_t throw_dex_pc_; |
| 1799 | // Quick frame with found handler or last frame if no handler found. |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1800 | mirror::AbstractMethod** handler_quick_frame_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1801 | // PC to branch to for the handler. |
| 1802 | uintptr_t handler_quick_frame_pc_; |
| 1803 | // Associated dex PC. |
| 1804 | uint32_t handler_dex_pc_; |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1805 | // Number of native methods passed in crawl (equates to number of SIRTs to pop) |
| 1806 | uint32_t native_method_count_; |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1807 | // Is method tracing active? |
| 1808 | const bool method_tracing_active_; |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 1809 | // Support for nesting no thread suspension checks. |
| 1810 | const char* last_no_assert_suspension_cause_; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1811 | }; |
| 1812 | |
jeffhao | 94d6df4 | 2012-11-26 16:02:12 -0800 | [diff] [blame] | 1813 | void Thread::QuickDeliverException() { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1814 | mirror::Throwable* exception = GetException(); // Get exception from thread |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1815 | CHECK(exception != NULL); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1816 | // Don't leave exception visible while we try to find the handler, which may cause class |
Elliott Hughes | d07986f | 2011-12-06 18:27:45 -0800 | [diff] [blame] | 1817 | // resolution. |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1818 | ClearException(); |
| 1819 | if (kDebugExceptionDelivery) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1820 | mirror::String* msg = exception->GetDetailMessage(); |
Ian Rogers | a32a6fd | 2012-02-06 20:18:44 -0800 | [diff] [blame] | 1821 | std::string str_msg(msg != NULL ? msg->ToModifiedUtf8() : ""); |
| 1822 | DumpStack(LOG(INFO) << "Delivering exception: " << PrettyTypeOf(exception) |
Elliott Hughes | c073b07 | 2012-05-24 19:29:17 -0700 | [diff] [blame] | 1823 | << ": " << str_msg << "\n"); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1824 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1825 | CatchBlockStackVisitor catch_finder(this, exception); |
| 1826 | catch_finder.WalkStack(true); |
| 1827 | catch_finder.DoLongJump(); |
Ian Rogers | 9a8a888 | 2012-03-08 02:30:55 -0800 | [diff] [blame] | 1828 | LOG(FATAL) << "UNREACHABLE"; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1829 | } |
| 1830 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1831 | Context* Thread::GetLongJumpContext() { |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 1832 | Context* result = long_jump_context_; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1833 | if (result == NULL) { |
| 1834 | result = Context::Create(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1835 | } else { |
| 1836 | long_jump_context_ = NULL; // Avoid context being shared. |
Mathieu Chartier | 6702243 | 2012-11-29 18:04:50 -0800 | [diff] [blame] | 1837 | result->Reset(); |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1838 | } |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1839 | return result; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1840 | } |
| 1841 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1842 | mirror::AbstractMethod* Thread::GetCurrentMethod(uint32_t* dex_pc, size_t* frame_id) const { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1843 | struct CurrentMethodVisitor : public StackVisitor { |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 1844 | CurrentMethodVisitor(Thread* thread) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 1845 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 1846 | : StackVisitor(thread, NULL), method_(NULL), dex_pc_(0), frame_id_(0) {} |
Elliott Hughes | 8be2d40 | 2012-02-23 14:22:41 -0800 | [diff] [blame] | 1847 | |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 1848 | virtual bool VisitFrame() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1849 | mirror::AbstractMethod* m = GetMethod(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1850 | if (m->IsRuntimeMethod()) { |
| 1851 | // Continue if this is a runtime method. |
| 1852 | return true; |
| 1853 | } |
| 1854 | method_ = m; |
| 1855 | dex_pc_ = GetDexPc(); |
| 1856 | frame_id_ = GetFrameId(); |
| 1857 | return false; |
| 1858 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1859 | mirror::AbstractMethod* method_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1860 | uint32_t dex_pc_; |
| 1861 | size_t frame_id_; |
| 1862 | }; |
| 1863 | |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 1864 | CurrentMethodVisitor visitor(const_cast<Thread*>(this)); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1865 | visitor.WalkStack(false); |
| 1866 | if (dex_pc != NULL) { |
| 1867 | *dex_pc = visitor.dex_pc_; |
Elliott Hughes | 9fd66f5 | 2011-10-16 12:13:26 -0700 | [diff] [blame] | 1868 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1869 | if (frame_id != NULL) { |
| 1870 | *frame_id = visitor.frame_id_; |
jeffhao | 33dc771 | 2011-11-09 17:54:24 -0800 | [diff] [blame] | 1871 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1872 | return visitor.method_; |
jeffhao | 33dc771 | 2011-11-09 17:54:24 -0800 | [diff] [blame] | 1873 | } |
| 1874 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1875 | bool Thread::HoldsLock(mirror::Object* object) { |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 1876 | if (object == NULL) { |
| 1877 | return false; |
| 1878 | } |
Brian Carlstrom | 24a3c2e | 2011-10-17 18:07:52 -0700 | [diff] [blame] | 1879 | return object->GetThinLockId() == thin_lock_id_; |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 1880 | } |
| 1881 | |
Ian Rogers | 40e3bac | 2012-11-20 00:09:14 -0800 | [diff] [blame] | 1882 | // RootVisitor parameters are: (const Object* obj, size_t vreg, const StackVisitor* visitor). |
| 1883 | template <typename RootVisitor> |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1884 | class ReferenceMapVisitor : public StackVisitor { |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1885 | public: |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 1886 | ReferenceMapVisitor(Thread* thread, Context* context, const RootVisitor& visitor) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 1887 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 1888 | : StackVisitor(thread, context), visitor_(visitor) {} |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1889 | |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 1890 | bool VisitFrame() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Brian Carlstrom | 6a4be3a | 2011-10-20 16:34:03 -0700 | [diff] [blame] | 1891 | if (false) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1892 | LOG(INFO) << "Visiting stack roots in " << PrettyMethod(GetMethod()) |
| 1893 | << StringPrintf("@ PC:%04x", GetDexPc()); |
Brian Carlstrom | 6a4be3a | 2011-10-20 16:34:03 -0700 | [diff] [blame] | 1894 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1895 | ShadowFrame* shadow_frame = GetCurrentShadowFrame(); |
| 1896 | if (shadow_frame != NULL) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1897 | mirror::AbstractMethod* m = shadow_frame->GetMethod(); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 1898 | size_t num_regs = shadow_frame->NumberOfVRegs(); |
| 1899 | if (m->IsNative() || shadow_frame->HasReferenceArray()) { |
| 1900 | // SIRT for JNI or References for interpreter. |
| 1901 | for (size_t reg = 0; reg < num_regs; ++reg) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1902 | mirror::Object* ref = shadow_frame->GetVRegReference(reg); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 1903 | if (ref != NULL) { |
| 1904 | visitor_(ref, reg, this); |
| 1905 | } |
| 1906 | } |
| 1907 | } else { |
| 1908 | // Java method. |
| 1909 | // Portable path use DexGcMap and store in Method.native_gc_map_. |
| 1910 | const uint8_t* gc_map = m->GetNativeGcMap(); |
| 1911 | CHECK(gc_map != NULL) << PrettyMethod(m); |
| 1912 | uint32_t gc_map_length = static_cast<uint32_t>((gc_map[0] << 24) | |
| 1913 | (gc_map[1] << 16) | |
| 1914 | (gc_map[2] << 8) | |
| 1915 | (gc_map[3] << 0)); |
| 1916 | verifier::DexPcToReferenceMap dex_gc_map(gc_map + 4, gc_map_length); |
| 1917 | uint32_t dex_pc = GetDexPc(); |
| 1918 | const uint8_t* reg_bitmap = dex_gc_map.FindBitMap(dex_pc); |
| 1919 | DCHECK(reg_bitmap != NULL); |
| 1920 | num_regs = std::min(dex_gc_map.RegWidth() * 8, num_regs); |
| 1921 | for (size_t reg = 0; reg < num_regs; ++reg) { |
| 1922 | if (TestBitmap(reg, reg_bitmap)) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1923 | mirror::Object* ref = shadow_frame->GetVRegReference(reg); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 1924 | if (ref != NULL) { |
| 1925 | visitor_(ref, reg, this); |
| 1926 | } |
| 1927 | } |
| 1928 | } |
| 1929 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1930 | } else { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1931 | mirror::AbstractMethod* m = GetMethod(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1932 | // Process register map (which native and runtime methods don't have) |
Ian Rogers | 640495b | 2012-06-22 15:15:47 -0700 | [diff] [blame] | 1933 | if (!m->IsNative() && !m->IsRuntimeMethod() && !m->IsProxyMethod()) { |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 1934 | const uint8_t* native_gc_map = m->GetNativeGcMap(); |
| 1935 | CHECK(native_gc_map != NULL) << PrettyMethod(m); |
| 1936 | mh_.ChangeMethod(m); |
| 1937 | const DexFile::CodeItem* code_item = mh_.GetCodeItem(); |
Elliott Hughes | caf7654 | 2012-06-28 16:08:22 -0700 | [diff] [blame] | 1938 | DCHECK(code_item != NULL) << PrettyMethod(m); // Can't be NULL or how would we compile its instructions? |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 1939 | NativePcOffsetToReferenceMap map(native_gc_map); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1940 | size_t num_regs = std::min(map.RegWidth() * 8, |
| 1941 | static_cast<size_t>(code_item->registers_size_)); |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 1942 | if (num_regs > 0) { |
| 1943 | const uint8_t* reg_bitmap = map.FindBitMap(GetNativePcOffset()); |
| 1944 | DCHECK(reg_bitmap != NULL); |
| 1945 | const VmapTable vmap_table(m->GetVmapTableRaw()); |
| 1946 | uint32_t core_spills = m->GetCoreSpillMask(); |
| 1947 | uint32_t fp_spills = m->GetFpSpillMask(); |
| 1948 | size_t frame_size = m->GetFrameSizeInBytes(); |
| 1949 | // For all dex registers in the bitmap |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1950 | mirror::AbstractMethod** cur_quick_frame = GetCurrentQuickFrame(); |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 1951 | DCHECK(cur_quick_frame != NULL); |
| 1952 | for (size_t reg = 0; reg < num_regs; ++reg) { |
| 1953 | // Does this register hold a reference? |
| 1954 | if (TestBitmap(reg, reg_bitmap)) { |
| 1955 | uint32_t vmap_offset; |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1956 | mirror::Object* ref; |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 1957 | if (vmap_table.IsInContext(reg, vmap_offset, kReferenceVReg)) { |
| 1958 | uintptr_t val = GetGPR(vmap_table.ComputeRegister(core_spills, vmap_offset, |
| 1959 | kReferenceVReg)); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1960 | ref = reinterpret_cast<mirror::Object*>(val); |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 1961 | } else { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1962 | ref = reinterpret_cast<mirror::Object*>(GetVReg(cur_quick_frame, code_item, |
| 1963 | core_spills, fp_spills, frame_size, |
| 1964 | reg)); |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 1965 | } |
| 1966 | |
| 1967 | if (ref != NULL) { |
Ian Rogers | 40e3bac | 2012-11-20 00:09:14 -0800 | [diff] [blame] | 1968 | visitor_(ref, reg, this); |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 1969 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1970 | } |
Shih-wei Liao | 4f894e3 | 2011-09-27 21:33:19 -0700 | [diff] [blame] | 1971 | } |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1972 | } |
| 1973 | } |
| 1974 | } |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1975 | return true; |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1976 | } |
| 1977 | |
| 1978 | private: |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 1979 | static bool TestBitmap(int reg, const uint8_t* reg_vector) { |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1980 | return ((reg_vector[reg / 8] >> (reg % 8)) & 0x01) != 0; |
| 1981 | } |
| 1982 | |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 1983 | // Visitor for when we visit a root. |
Ian Rogers | 40e3bac | 2012-11-20 00:09:14 -0800 | [diff] [blame] | 1984 | const RootVisitor& visitor_; |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 1985 | |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 1986 | // A method helper we keep around to avoid dex file/cache re-computations. |
| 1987 | MethodHelper mh_; |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1988 | }; |
| 1989 | |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 1990 | class RootCallbackVisitor { |
| 1991 | public: |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1992 | RootCallbackVisitor(RootVisitor* visitor, void* arg) : visitor_(visitor), arg_(arg) { |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 1993 | |
| 1994 | } |
| 1995 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1996 | void operator()(const mirror::Object* obj, size_t, const StackVisitor*) const { |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 1997 | visitor_(obj, arg_); |
| 1998 | } |
| 1999 | |
| 2000 | private: |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 2001 | RootVisitor* visitor_; |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 2002 | void* arg_; |
| 2003 | }; |
| 2004 | |
| 2005 | class VerifyCallbackVisitor { |
| 2006 | public: |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 2007 | VerifyCallbackVisitor(VerifyRootVisitor* visitor, void* arg) |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 2008 | : visitor_(visitor), |
| 2009 | arg_(arg) { |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 2010 | } |
| 2011 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 2012 | void operator()(const mirror::Object* obj, size_t vreg, const StackVisitor* visitor) const { |
Ian Rogers | 40e3bac | 2012-11-20 00:09:14 -0800 | [diff] [blame] | 2013 | visitor_(obj, arg_, vreg, visitor); |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 2014 | } |
| 2015 | |
| 2016 | private: |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 2017 | VerifyRootVisitor* const visitor_; |
Ian Rogers | 40e3bac | 2012-11-20 00:09:14 -0800 | [diff] [blame] | 2018 | void* const arg_; |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 2019 | }; |
| 2020 | |
| 2021 | struct VerifyRootWrapperArg { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 2022 | VerifyRootVisitor* visitor; |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 2023 | void* arg; |
| 2024 | }; |
| 2025 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 2026 | static void VerifyRootWrapperCallback(const mirror::Object* root, void* arg) { |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 2027 | VerifyRootWrapperArg* wrapperArg = reinterpret_cast<VerifyRootWrapperArg*>(arg); |
| 2028 | wrapperArg->visitor(root, wrapperArg->arg, 0, NULL); |
| 2029 | } |
| 2030 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 2031 | void Thread::VerifyRoots(VerifyRootVisitor* visitor, void* arg) { |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 2032 | // We need to map from a RootVisitor to VerifyRootVisitor, so pass in nulls for arguments we |
| 2033 | // don't have. |
| 2034 | VerifyRootWrapperArg wrapperArg; |
| 2035 | wrapperArg.arg = arg; |
| 2036 | wrapperArg.visitor = visitor; |
| 2037 | |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 2038 | if (opeer_ != NULL) { |
| 2039 | VerifyRootWrapperCallback(opeer_, &wrapperArg); |
| 2040 | } |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 2041 | if (exception_ != NULL) { |
| 2042 | VerifyRootWrapperCallback(exception_, &wrapperArg); |
| 2043 | } |
| 2044 | if (class_loader_override_ != NULL) { |
| 2045 | VerifyRootWrapperCallback(class_loader_override_, &wrapperArg); |
| 2046 | } |
| 2047 | jni_env_->locals.VisitRoots(VerifyRootWrapperCallback, &wrapperArg); |
| 2048 | jni_env_->monitors.VisitRoots(VerifyRootWrapperCallback, &wrapperArg); |
| 2049 | |
| 2050 | SirtVisitRoots(VerifyRootWrapperCallback, &wrapperArg); |
| 2051 | |
| 2052 | // Visit roots on this thread's stack |
| 2053 | Context* context = GetLongJumpContext(); |
| 2054 | VerifyCallbackVisitor visitorToCallback(visitor, arg); |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 2055 | ReferenceMapVisitor<VerifyCallbackVisitor> mapper(this, context, visitorToCallback); |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 2056 | mapper.WalkStack(); |
| 2057 | ReleaseLongJumpContext(context); |
| 2058 | } |
| 2059 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 2060 | void Thread::VisitRoots(RootVisitor* visitor, void* arg) { |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 2061 | if (opeer_ != NULL) { |
| 2062 | visitor(opeer_, arg); |
| 2063 | } |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 2064 | if (exception_ != NULL) { |
| 2065 | visitor(exception_, arg); |
| 2066 | } |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 2067 | if (class_loader_override_ != NULL) { |
| 2068 | visitor(class_loader_override_, arg); |
| 2069 | } |
Elliott Hughes | 410c0c8 | 2011-09-01 17:58:25 -0700 | [diff] [blame] | 2070 | jni_env_->locals.VisitRoots(visitor, arg); |
| 2071 | jni_env_->monitors.VisitRoots(visitor, arg); |
Shih-wei Liao | 8dfc9d5 | 2011-09-28 18:06:15 -0700 | [diff] [blame] | 2072 | |
| 2073 | SirtVisitRoots(visitor, arg); |
| 2074 | |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 2075 | // Visit roots on this thread's stack |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2076 | Context* context = GetLongJumpContext(); |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 2077 | RootCallbackVisitor visitorToCallback(visitor, arg); |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 2078 | ReferenceMapVisitor<RootCallbackVisitor> mapper(this, context, visitorToCallback); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2079 | mapper.WalkStack(); |
| 2080 | ReleaseLongJumpContext(context); |
Elliott Hughes | 410c0c8 | 2011-09-01 17:58:25 -0700 | [diff] [blame] | 2081 | } |
| 2082 | |
jeffhao | 2504552 | 2012-03-13 19:34:37 -0700 | [diff] [blame] | 2083 | #if VERIFY_OBJECT_ENABLED |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2084 | static void VerifyObject(const Object* obj, void* arg) { |
| 2085 | Heap* heap = reinterpret_cast<Heap*>(arg); |
| 2086 | heap->VerifyObject(obj); |
jeffhao | 2504552 | 2012-03-13 19:34:37 -0700 | [diff] [blame] | 2087 | } |
| 2088 | |
| 2089 | void Thread::VerifyStack() { |
jeffhao | e66ac79 | 2012-03-19 16:08:46 -0700 | [diff] [blame] | 2090 | UniquePtr<Context> context(Context::Create()); |
jeffhao | 4eb68ed | 2012-10-17 16:41:07 -0700 | [diff] [blame] | 2091 | RootCallbackVisitor visitorToCallback(VerifyObject, Runtime::Current()->GetHeap()); |
Ian Rogers | f58dffd | 2013-01-13 09:25:49 -0800 | [diff] [blame] | 2092 | ReferenceMapVisitor<RootCallbackVisitor> mapper(GetManagedStack(), GetInstrumentationStack(), |
| 2093 | context.get(), visitorToCallback); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2094 | mapper.WalkStack(); |
jeffhao | 2504552 | 2012-03-13 19:34:37 -0700 | [diff] [blame] | 2095 | } |
| 2096 | #endif |
| 2097 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 2098 | // Set the stack end to that to be used during a stack overflow |
| 2099 | void Thread::SetStackEndForStackOverflow() { |
| 2100 | // During stack overflow we allow use of the full stack |
| 2101 | if (stack_end_ == stack_begin_) { |
| 2102 | DumpStack(std::cerr); |
| 2103 | LOG(FATAL) << "Need to increase kStackOverflowReservedBytes (currently " |
| 2104 | << kStackOverflowReservedBytes << ")"; |
| 2105 | } |
| 2106 | |
| 2107 | stack_end_ = stack_begin_; |
| 2108 | } |
| 2109 | |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 2110 | std::ostream& operator<<(std::ostream& os, const Thread& thread) { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 2111 | thread.ShortDump(os); |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 2112 | return os; |
| 2113 | } |
| 2114 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 2115 | #ifndef NDEBUG |
| 2116 | void Thread::AssertThreadSuspensionIsAllowable(bool check_locks) const { |
| 2117 | CHECK_EQ(0u, no_thread_suspension_) << last_no_thread_suspension_cause_; |
| 2118 | if (check_locks) { |
| 2119 | bool bad_mutexes_held = false; |
| 2120 | for (int i = kMaxMutexLevel; i >= 0; --i) { |
| 2121 | // We expect no locks except the mutator_lock_. |
| 2122 | if (i != kMutatorLock) { |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 2123 | BaseMutex* held_mutex = GetHeldMutex(static_cast<LockLevel>(i)); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 2124 | if (held_mutex != NULL) { |
| 2125 | LOG(ERROR) << "holding \"" << held_mutex->GetName() |
| 2126 | << "\" at point where thread suspension is expected"; |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 2127 | bad_mutexes_held = true; |
| 2128 | } |
| 2129 | } |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 2130 | } |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 2131 | CHECK(!bad_mutexes_held); |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 2132 | } |
| 2133 | } |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 2134 | #endif |
Elliott Hughes | a4060e5 | 2012-03-02 16:51:35 -0800 | [diff] [blame] | 2135 | |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 2136 | } // namespace art |