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> |
| 21 | #include <sys/mman.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 | 872d4ec | 2011-10-21 17:07:15 -0700 | [diff] [blame] | 31 | #include "debugger.h" |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 32 | #include "class_linker.h" |
Brian Carlstrom | df14324 | 2011-10-10 18:05:34 -0700 | [diff] [blame] | 33 | #include "class_loader.h" |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 34 | #include "dex_verifier.h" |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 35 | #include "heap.h" |
Elliott Hughes | c5f7c91 | 2011-08-18 14:00:42 -0700 | [diff] [blame] | 36 | #include "jni_internal.h" |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 37 | #include "monitor.h" |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 38 | #include "oat/runtime/context.h" |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 39 | #include "object.h" |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 40 | #include "object_utils.h" |
Jesse Wilson | 9a6bae8 | 2011-11-14 14:57:30 -0500 | [diff] [blame] | 41 | #include "reflection.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 42 | #include "runtime.h" |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 43 | #include "runtime_support.h" |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 44 | #include "ScopedLocalRef.h" |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 45 | #include "scoped_jni_thread_state.h" |
Logan Chien | f7ad17e | 2012-03-15 03:10:03 +0800 | [diff] [blame] | 46 | #include "shadow_frame.h" |
Ian Rogers | 30fab40 | 2012-01-23 15:43:46 -0800 | [diff] [blame] | 47 | #include "space.h" |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 48 | #include "stack.h" |
| 49 | #include "stack_indirect_reference_table.h" |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 50 | #include "thread_list.h" |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 51 | #include "utils.h" |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 52 | |
| 53 | namespace art { |
| 54 | |
| 55 | pthread_key_t Thread::pthread_key_self_; |
| 56 | |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 57 | static Class* gThreadGroup = NULL; |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 58 | static Class* gThreadLock = NULL; |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 59 | static Field* gThread_daemon = NULL; |
| 60 | static Field* gThread_group = NULL; |
| 61 | static Field* gThread_lock = NULL; |
| 62 | static Field* gThread_name = NULL; |
| 63 | static Field* gThread_priority = NULL; |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 64 | static Field* gThread_uncaughtHandler = NULL; |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 65 | static Field* gThread_vmData = NULL; |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 66 | static Field* gThreadGroup_mMain = NULL; |
| 67 | static Field* gThreadGroup_mSystem = NULL; |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 68 | static Field* gThreadGroup_name = NULL; |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 69 | static Field* gThreadLock_thread = NULL; |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 70 | static Method* gThread_run = NULL; |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 71 | static Method* gThreadGroup_removeThread = NULL; |
| 72 | static Method* gUncaughtExceptionHandler_uncaughtException = NULL; |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 73 | |
Ian Rogers | 5d76c43 | 2011-10-31 21:42:49 -0700 | [diff] [blame] | 74 | void Thread::InitCardTable() { |
Elliott Hughes | b3bd5f0 | 2012-03-08 21:05:27 -0800 | [diff] [blame] | 75 | card_table_ = Runtime::Current()->GetHeap()->GetCardTable()->GetBiasedBegin(); |
Ian Rogers | 5d76c43 | 2011-10-31 21:42:49 -0700 | [diff] [blame] | 76 | } |
| 77 | |
buzbee | 3ea4ec5 | 2011-08-22 17:37:19 -0700 | [diff] [blame] | 78 | void Thread::InitFunctionPointers() { |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 79 | InitEntryPoints(&entrypoints_); |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 80 | } |
| 81 | |
| 82 | void Thread::SetDebuggerUpdatesEnabled(bool enabled) { |
| 83 | LOG(INFO) << "Turning debugger updates " << (enabled ? "on" : "off") << " for " << *this; |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 84 | ChangeDebuggerEntryPoint(&entrypoints_, enabled); |
buzbee | 3ea4ec5 | 2011-08-22 17:37:19 -0700 | [diff] [blame] | 85 | } |
| 86 | |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 87 | void Thread::InitTid() { |
| 88 | tid_ = ::art::GetTid(); |
| 89 | } |
| 90 | |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 91 | void Thread::InitAfterFork() { |
| 92 | InitTid(); |
Elliott Hughes | 3147a23 | 2011-10-12 15:55:07 -0700 | [diff] [blame] | 93 | #if defined(__BIONIC__) |
| 94 | // Work around a bionic bug. |
| 95 | struct bionic_pthread_internal_t { |
| 96 | void* next; |
| 97 | void** pref; |
| 98 | pthread_attr_t attr; |
| 99 | pid_t kernel_id; |
| 100 | // et cetera. we just need 'kernel_id' so we can stop here. |
| 101 | }; |
| 102 | reinterpret_cast<bionic_pthread_internal_t*>(pthread_self())->kernel_id = tid_; |
| 103 | #endif |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 104 | } |
| 105 | |
Brian Carlstrom | 78128a6 | 2011-09-15 17:21:19 -0700 | [diff] [blame] | 106 | void* Thread::CreateCallback(void* arg) { |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 107 | Thread* self = reinterpret_cast<Thread*>(arg); |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 108 | self->Init(); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 109 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 110 | // Wait until it's safe to start running code. (There may have been a suspend-all |
| 111 | // in progress while we were starting up.) |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 112 | Runtime* runtime = Runtime::Current(); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 113 | runtime->GetThreadList()->WaitForGo(); |
| 114 | |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 115 | { |
| 116 | CHECK_EQ(self->GetState(), Thread::kRunnable); |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 117 | SirtRef<String> thread_name(self->GetThreadName()); |
| 118 | self->SetThreadName(thread_name->ToModifiedUtf8().c_str()); |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 119 | } |
| 120 | |
Elliott Hughes | 872d4ec | 2011-10-21 17:07:15 -0700 | [diff] [blame] | 121 | Dbg::PostThreadStart(self); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 122 | |
| 123 | // Invoke the 'run' method of our java.lang.Thread. |
| 124 | CHECK(self->peer_ != NULL); |
| 125 | Object* receiver = self->peer_; |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 126 | Method* m = receiver->GetClass()->FindVirtualMethodForVirtualOrInterface(gThread_run); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 127 | m->Invoke(self, receiver, NULL, NULL); |
| 128 | |
| 129 | // Detach. |
| 130 | runtime->GetThreadList()->Unregister(); |
| 131 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 132 | return NULL; |
| 133 | } |
| 134 | |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 135 | static void SetVmData(Object* managed_thread, Thread* native_thread) { |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 136 | gThread_vmData->SetInt(managed_thread, reinterpret_cast<uintptr_t>(native_thread)); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 137 | } |
| 138 | |
Elliott Hughes | 761928d | 2011-11-16 18:33:03 -0800 | [diff] [blame] | 139 | Thread* Thread::FromManagedThread(Object* thread_peer) { |
| 140 | return reinterpret_cast<Thread*>(static_cast<uintptr_t>(gThread_vmData->GetInt(thread_peer))); |
| 141 | } |
| 142 | |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 143 | Thread* Thread::FromManagedThread(JNIEnv* env, jobject java_thread) { |
Elliott Hughes | 761928d | 2011-11-16 18:33:03 -0800 | [diff] [blame] | 144 | return FromManagedThread(Decode<Object*>(env, java_thread)); |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 145 | } |
| 146 | |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 147 | static size_t FixStackSize(size_t stack_size) { |
Elliott Hughes | 7502e2a | 2011-10-02 13:24:37 -0700 | [diff] [blame] | 148 | // A stack size of zero means "use the default". |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 149 | if (stack_size == 0) { |
| 150 | stack_size = Runtime::Current()->GetDefaultStackSize(); |
| 151 | } |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 152 | |
Elliott Hughes | 7502e2a | 2011-10-02 13:24:37 -0700 | [diff] [blame] | 153 | // It's not possible to request a stack smaller than the system-defined PTHREAD_STACK_MIN. |
| 154 | if (stack_size < PTHREAD_STACK_MIN) { |
| 155 | stack_size = PTHREAD_STACK_MIN; |
| 156 | } |
| 157 | |
| 158 | // It's likely that callers are trying to ensure they have at least a certain amount of |
| 159 | // stack space, so we should add our reserved space on top of what they requested, rather |
| 160 | // than implicitly take it away from them. |
| 161 | stack_size += Thread::kStackOverflowReservedBytes; |
| 162 | |
| 163 | // Some systems require the stack size to be a multiple of the system page size, so round up. |
| 164 | stack_size = RoundUp(stack_size, kPageSize); |
| 165 | |
| 166 | return stack_size; |
| 167 | } |
| 168 | |
| 169 | void Thread::Create(Object* peer, size_t stack_size) { |
| 170 | CHECK(peer != NULL); |
| 171 | |
| 172 | stack_size = FixStackSize(stack_size); |
| 173 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 174 | Thread* native_thread = new Thread; |
| 175 | native_thread->peer_ = peer; |
| 176 | |
| 177 | // Thread.start is synchronized, so we know that vmData is 0, |
| 178 | // and know that we're not racing to assign it. |
| 179 | SetVmData(peer, native_thread); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 180 | |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 181 | { |
| 182 | ScopedThreadStateChange tsc(Thread::Current(), Thread::kVmWait); |
| 183 | pthread_t new_pthread; |
| 184 | pthread_attr_t attr; |
| 185 | CHECK_PTHREAD_CALL(pthread_attr_init, (&attr), "new thread"); |
| 186 | CHECK_PTHREAD_CALL(pthread_attr_setdetachstate, (&attr, PTHREAD_CREATE_DETACHED), "PTHREAD_CREATE_DETACHED"); |
| 187 | CHECK_PTHREAD_CALL(pthread_attr_setstacksize, (&attr, stack_size), stack_size); |
| 188 | CHECK_PTHREAD_CALL(pthread_create, (&new_pthread, &attr, Thread::CreateCallback, native_thread), "new thread"); |
| 189 | CHECK_PTHREAD_CALL(pthread_attr_destroy, (&attr), "new thread"); |
| 190 | } |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 191 | |
| 192 | // Let the child know when it's safe to start running. |
| 193 | Runtime::Current()->GetThreadList()->SignalGo(native_thread); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 194 | } |
| 195 | |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 196 | void Thread::Init() { |
| 197 | // This function does all the initialization that must be run by the native thread it applies to. |
| 198 | // (When we create a new thread from managed code, we allocate the Thread* in Thread::Create so |
| 199 | // we can handshake with the corresponding native thread when it's ready.) Check this native |
| 200 | // thread hasn't been through here already... |
Elliott Hughes | cac6cc7 | 2011-11-03 20:31:21 -0700 | [diff] [blame] | 201 | CHECK(Thread::Current() == NULL); |
| 202 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 203 | InitCpu(); |
| 204 | InitFunctionPointers(); |
Ian Rogers | 5d76c43 | 2011-10-31 21:42:49 -0700 | [diff] [blame] | 205 | InitCardTable(); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 206 | |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 207 | Runtime* runtime = Runtime::Current(); |
| 208 | CHECK(runtime != NULL); |
| 209 | |
| 210 | thin_lock_id_ = runtime->GetThreadList()->AllocThreadId(); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 211 | |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 212 | InitTid(); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 213 | InitStackHwm(); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 214 | |
Elliott Hughes | 3147a23 | 2011-10-12 15:55:07 -0700 | [diff] [blame] | 215 | CHECK_PTHREAD_CALL(pthread_setspecific, (Thread::pthread_key_self_, this), "attach"); |
Elliott Hughes | a5780da | 2011-07-17 11:39:39 -0700 | [diff] [blame] | 216 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 217 | jni_env_ = new JNIEnvExt(this, runtime->GetJavaVM()); |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 218 | |
Elliott Hughes | 7a3aeb4 | 2011-09-25 17:39:47 -0700 | [diff] [blame] | 219 | runtime->GetThreadList()->Register(); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 220 | } |
| 221 | |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 222 | Thread* Thread::Attach(const char* thread_name, bool as_daemon, Object* thread_group) { |
Elliott Hughes | cac6cc7 | 2011-11-03 20:31:21 -0700 | [diff] [blame] | 223 | Thread* self = new Thread; |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 224 | self->Init(); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 225 | |
Elliott Hughes | cac6cc7 | 2011-11-03 20:31:21 -0700 | [diff] [blame] | 226 | self->SetState(Thread::kNative); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 227 | |
Elliott Hughes | cac6cc7 | 2011-11-03 20:31:21 -0700 | [diff] [blame] | 228 | // If we're the main thread, ClassLinker won't be created until after we're attached, |
| 229 | // 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] | 230 | // In the compiler, all threads need this hack, because no-one's going to be getting |
| 231 | // a native peer! |
| 232 | if (self->thin_lock_id_ != ThreadList::kMainId && !Runtime::Current()->IsCompiler()) { |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 233 | self->CreatePeer(thread_name, as_daemon, thread_group); |
Elliott Hughes | 06e3ad4 | 2012-02-07 14:51:57 -0800 | [diff] [blame] | 234 | } else { |
| 235 | // 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] | 236 | if (thread_name != NULL) { |
| 237 | self->name_->assign(thread_name); |
| 238 | ::art::SetThreadName(thread_name); |
| 239 | } |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 240 | } |
Elliott Hughes | cac6cc7 | 2011-11-03 20:31:21 -0700 | [diff] [blame] | 241 | |
| 242 | self->GetJniEnv()->locals.AssertEmpty(); |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 243 | return self; |
| 244 | } |
| 245 | |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 246 | Object* Thread::GetMainThreadGroup() { |
Ian Rogers | 0045a29 | 2012-03-31 21:08:41 -0700 | [diff] [blame] | 247 | if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(gThreadGroup, true, true)) { |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 248 | return NULL; |
| 249 | } |
| 250 | return gThreadGroup_mMain->GetObject(NULL); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 251 | } |
| 252 | |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 253 | Object* Thread::GetSystemThreadGroup() { |
Ian Rogers | 0045a29 | 2012-03-31 21:08:41 -0700 | [diff] [blame] | 254 | if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(gThreadGroup, true, true)) { |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 255 | return NULL; |
| 256 | } |
| 257 | return gThreadGroup_mSystem->GetObject(NULL); |
| 258 | } |
| 259 | |
| 260 | void Thread::CreatePeer(const char* name, bool as_daemon, Object* thread_group) { |
Jesse Wilson | 9a6bae8 | 2011-11-14 14:57:30 -0500 | [diff] [blame] | 261 | CHECK(Runtime::Current()->IsStarted()); |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 262 | JNIEnv* env = jni_env_; |
| 263 | |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 264 | if (thread_group == NULL) { |
| 265 | thread_group = Thread::GetMainThreadGroup(); |
| 266 | } |
| 267 | ScopedLocalRef<jobject> java_thread_group(env, AddLocalReference<jobject>(env, thread_group)); |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 268 | ScopedLocalRef<jobject> thread_name(env, env->NewStringUTF(name)); |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 269 | jint thread_priority = GetNativePriority(); |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 270 | jboolean thread_is_daemon = as_daemon; |
| 271 | |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 272 | ScopedLocalRef<jclass> c(env, env->FindClass("java/lang/Thread")); |
Ian Rogers | 5d4bdc2 | 2011-11-02 22:15:43 -0700 | [diff] [blame] | 273 | ScopedLocalRef<jobject> peer(env, env->AllocObject(c.get())); |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 274 | peer_ = DecodeJObject(peer.get()); |
Ian Rogers | 5d4bdc2 | 2011-11-02 22:15:43 -0700 | [diff] [blame] | 275 | if (peer_ == NULL) { |
| 276 | CHECK(IsExceptionPending()); |
Ian Rogers | 5d4bdc2 | 2011-11-02 22:15:43 -0700 | [diff] [blame] | 277 | return; |
| 278 | } |
| 279 | jmethodID mid = env->GetMethodID(c.get(), "<init>", "(Ljava/lang/ThreadGroup;Ljava/lang/String;IZ)V"); |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 280 | env->CallNonvirtualVoidMethod(peer.get(), c.get(), mid, java_thread_group.get(), thread_name.get(), thread_priority, thread_is_daemon); |
Jesse Wilson | 9a6bae8 | 2011-11-14 14:57:30 -0500 | [diff] [blame] | 281 | CHECK(!IsExceptionPending()) << " " << PrettyTypeOf(GetException()); |
Elliott Hughes | 7a3aeb4 | 2011-09-25 17:39:47 -0700 | [diff] [blame] | 282 | SetVmData(peer_, Thread::Current()); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 283 | |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 284 | SirtRef<String> peer_thread_name(GetThreadName()); |
Brian Carlstrom | 00fae58 | 2011-10-28 01:16:28 -0700 | [diff] [blame] | 285 | if (peer_thread_name.get() == NULL) { |
| 286 | // The Thread constructor should have set the Thread.name to a |
| 287 | // non-null value. However, because we can run without code |
| 288 | // available (in the compiler, in tests), we manually assign the |
| 289 | // fields the constructor should have set. |
| 290 | gThread_daemon->SetBoolean(peer_, thread_is_daemon); |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 291 | gThread_group->SetObject(peer_, thread_group); |
Brian Carlstrom | 00fae58 | 2011-10-28 01:16:28 -0700 | [diff] [blame] | 292 | gThread_name->SetObject(peer_, Decode<Object*>(env, thread_name.get())); |
| 293 | gThread_priority->SetInt(peer_, thread_priority); |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 294 | peer_thread_name.reset(GetThreadName()); |
Brian Carlstrom | 00fae58 | 2011-10-28 01:16:28 -0700 | [diff] [blame] | 295 | } |
| 296 | // thread_name may have been null, so don't trust this to be non-null |
| 297 | if (peer_thread_name.get() != NULL) { |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 298 | SetThreadName(peer_thread_name->ToModifiedUtf8().c_str()); |
Brian Carlstrom | 00fae58 | 2011-10-28 01:16:28 -0700 | [diff] [blame] | 299 | } |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 300 | |
| 301 | // Pre-allocate an OutOfMemoryError for the double-OOME case. |
| 302 | ThrowNewException("Ljava/lang/OutOfMemoryError;", |
| 303 | "OutOfMemoryError thrown while trying to throw OutOfMemoryError; no stack available"); |
| 304 | ScopedLocalRef<jthrowable> exception(env, env->ExceptionOccurred()); |
| 305 | env->ExceptionClear(); |
| 306 | pre_allocated_OutOfMemoryError_ = Decode<Throwable*>(env, exception.get()); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 307 | } |
| 308 | |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 309 | void Thread::SetThreadName(const char* name) { |
| 310 | name_->assign(name); |
| 311 | ::art::SetThreadName(name); |
| 312 | Dbg::DdmSendThreadNotification(this, CHUNK_TYPE("THNM")); |
| 313 | } |
| 314 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 315 | void Thread::InitStackHwm() { |
Elliott Hughes | 215f314 | 2012-01-19 00:22:47 -0800 | [diff] [blame] | 316 | #if defined(__APPLE__) |
Elliott Hughes | 6cc332e | 2012-01-20 22:59:20 -0800 | [diff] [blame] | 317 | // Only needed to run code. Try implementing this with pthread_get_stacksize_np and pthread_get_stackaddr_np. |
| 318 | UNIMPLEMENTED(WARNING); |
Elliott Hughes | 215f314 | 2012-01-19 00:22:47 -0800 | [diff] [blame] | 319 | #else |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 320 | pthread_attr_t attributes; |
Elliott Hughes | 3147a23 | 2011-10-12 15:55:07 -0700 | [diff] [blame] | 321 | CHECK_PTHREAD_CALL(pthread_getattr_np, (pthread_self(), &attributes), __FUNCTION__); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 322 | |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 323 | void* temp_stack_base; |
| 324 | CHECK_PTHREAD_CALL(pthread_attr_getstack, (&attributes, &temp_stack_base, &stack_size_), |
| 325 | __FUNCTION__); |
Ian Rogers | 30fab40 | 2012-01-23 15:43:46 -0800 | [diff] [blame] | 326 | stack_begin_ = reinterpret_cast<byte*>(temp_stack_base); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 327 | |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 328 | if (stack_size_ <= kStackOverflowReservedBytes) { |
Elliott Hughes | 3d30d9b | 2011-12-07 17:35:48 -0800 | [diff] [blame] | 329 | 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] | 330 | } |
Elliott Hughes | 449b4bd | 2011-09-09 12:01:38 -0700 | [diff] [blame] | 331 | |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 332 | // Set stack_end_ to the bottom of the stack saving space of stack overflows |
| 333 | ResetDefaultStackEnd(); |
Elliott Hughes | 449b4bd | 2011-09-09 12:01:38 -0700 | [diff] [blame] | 334 | |
| 335 | // Sanity check. |
| 336 | int stack_variable; |
Elliott Hughes | 398f64b | 2012-03-26 18:05:48 -0700 | [diff] [blame] | 337 | CHECK_GT(&stack_variable, reinterpret_cast<void*>(stack_end_)); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 338 | |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 339 | CHECK_PTHREAD_CALL(pthread_attr_destroy, (&attributes), __FUNCTION__); |
Elliott Hughes | 215f314 | 2012-01-19 00:22:47 -0800 | [diff] [blame] | 340 | #endif |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 341 | } |
| 342 | |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 343 | void Thread::Dump(std::ostream& os, bool full) const { |
| 344 | if (full) { |
| 345 | DumpState(os); |
| 346 | DumpStack(os); |
| 347 | } else { |
| 348 | os << "Thread["; |
| 349 | if (GetThinLockId() != 0) { |
| 350 | // If we're in kStarting, we won't have a thin lock id or tid yet. |
| 351 | os << GetThinLockId() |
| 352 | << ",tid=" << GetTid() << ','; |
| 353 | } |
| 354 | os << GetState() |
| 355 | << ",Thread*=" << this |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 356 | << ",peer=" << peer_ |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 357 | << ",\"" << *name_ << "\"" |
| 358 | << "]"; |
Elliott Hughes | e091855 | 2011-10-28 17:18:29 -0700 | [diff] [blame] | 359 | } |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 360 | } |
| 361 | |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 362 | String* Thread::GetThreadName() const { |
Elliott Hughes | fc86162 | 2011-10-17 17:57:47 -0700 | [diff] [blame] | 363 | return (peer_ != NULL) ? reinterpret_cast<String*>(gThread_name->GetObject(peer_)) : NULL; |
| 364 | } |
| 365 | |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 366 | void Thread::GetThreadName(std::string& name) const { |
| 367 | name.assign(*name_); |
| 368 | } |
| 369 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 370 | void Thread::DumpState(std::ostream& os) const { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 371 | std::string group_name; |
| 372 | int priority; |
| 373 | bool is_daemon = false; |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 374 | |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 375 | if (peer_ != NULL) { |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 376 | priority = gThread_priority->GetInt(peer_); |
| 377 | is_daemon = gThread_daemon->GetBoolean(peer_); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 378 | |
Elliott Hughes | a215526 | 2011-11-16 16:26:58 -0800 | [diff] [blame] | 379 | Object* thread_group = GetThreadGroup(); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 380 | if (thread_group != NULL) { |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 381 | String* group_name_string = reinterpret_cast<String*>(gThreadGroup_name->GetObject(thread_group)); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 382 | group_name = (group_name_string != NULL) ? group_name_string->ToModifiedUtf8() : "<null>"; |
| 383 | } |
| 384 | } else { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 385 | priority = GetNativePriority(); |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 386 | } |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 387 | |
| 388 | int policy; |
| 389 | sched_param sp; |
Elliott Hughes | 3147a23 | 2011-10-12 15:55:07 -0700 | [diff] [blame] | 390 | CHECK_PTHREAD_CALL(pthread_getschedparam, (pthread_self(), &policy, &sp), __FUNCTION__); |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 391 | |
Elliott Hughes | 1bac54f | 2012-03-16 12:48:31 -0700 | [diff] [blame] | 392 | std::string scheduler_group_name(GetSchedulerGroupName(GetTid())); |
| 393 | if (scheduler_group_name.empty()) { |
| 394 | scheduler_group_name = "default"; |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 395 | } |
| 396 | |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 397 | os << '"' << *name_ << '"'; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 398 | if (is_daemon) { |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 399 | os << " daemon"; |
| 400 | } |
| 401 | os << " prio=" << priority |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 402 | << " tid=" << GetThinLockId() |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 403 | << " " << GetState() << "\n"; |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 404 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 405 | os << " | group=\"" << group_name << "\"" |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 406 | << " sCount=" << suspend_count_ |
Elliott Hughes | 234ab15 | 2011-10-26 14:02:26 -0700 | [diff] [blame] | 407 | << " dsCount=" << debug_suspend_count_ |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 408 | << " obj=" << reinterpret_cast<void*>(peer_) |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 409 | << " self=" << reinterpret_cast<const void*>(this) << "\n"; |
| 410 | os << " | sysTid=" << GetTid() |
| 411 | << " nice=" << getpriority(PRIO_PROCESS, GetTid()) |
| 412 | << " sched=" << policy << "/" << sp.sched_priority |
Elliott Hughes | 1bac54f | 2012-03-16 12:48:31 -0700 | [diff] [blame] | 413 | << " cgrp=" << scheduler_group_name |
Elliott Hughes | 3147a23 | 2011-10-12 15:55:07 -0700 | [diff] [blame] | 414 | << " handle=" << pthread_self() << "\n"; |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 415 | |
| 416 | // Grab the scheduler stats for this thread. |
| 417 | std::string scheduler_stats; |
| 418 | if (ReadFileToString(StringPrintf("/proc/self/task/%d/schedstat", GetTid()).c_str(), &scheduler_stats)) { |
| 419 | scheduler_stats.resize(scheduler_stats.size() - 1); // Lose the trailing '\n'. |
| 420 | } else { |
| 421 | scheduler_stats = "0 0 0"; |
| 422 | } |
| 423 | |
| 424 | int utime = 0; |
| 425 | int stime = 0; |
| 426 | int task_cpu = 0; |
Elliott Hughes | bfe487b | 2011-10-26 15:48:55 -0700 | [diff] [blame] | 427 | GetTaskStats(GetTid(), utime, stime, task_cpu); |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 428 | |
| 429 | os << " | schedstat=( " << scheduler_stats << " )" |
| 430 | << " utm=" << utime |
| 431 | << " stm=" << stime |
| 432 | << " core=" << task_cpu |
| 433 | << " HZ=" << sysconf(_SC_CLK_TCK) << "\n"; |
| 434 | } |
| 435 | |
TDYa127 | ee0d3fb | 2012-04-01 14:55:33 -0700 | [diff] [blame] | 436 | #if !defined(ART_USE_LLVM_COMPILER) |
Ian Rogers | b04f69f | 2011-10-17 00:40:54 -0700 | [diff] [blame] | 437 | void Thread::PushNativeToManagedRecord(NativeToManagedRecord* record) { |
| 438 | Method **sp = top_of_managed_stack_.GetSP(); |
| 439 | #ifndef NDEBUG |
| 440 | if (sp != NULL) { |
| 441 | Method* m = *sp; |
Elliott Hughes | b3bd5f0 | 2012-03-08 21:05:27 -0800 | [diff] [blame] | 442 | Runtime::Current()->GetHeap()->VerifyObject(m); |
Ian Rogers | b04f69f | 2011-10-17 00:40:54 -0700 | [diff] [blame] | 443 | DCHECK((m == NULL) || m->IsMethod()); |
| 444 | } |
| 445 | #endif |
| 446 | record->last_top_of_managed_stack_ = reinterpret_cast<void*>(sp); |
| 447 | record->last_top_of_managed_stack_pc_ = top_of_managed_stack_pc_; |
| 448 | record->link_ = native_to_managed_record_; |
| 449 | native_to_managed_record_ = record; |
| 450 | top_of_managed_stack_.SetSP(NULL); |
| 451 | } |
TDYa127 | ee0d3fb | 2012-04-01 14:55:33 -0700 | [diff] [blame] | 452 | #else |
| 453 | void Thread::PushNativeToManagedRecord(NativeToManagedRecord*) { |
| 454 | LOG(FATAL) << "Called non-LLVM method with LLVM"; |
| 455 | } |
| 456 | #endif |
Ian Rogers | b04f69f | 2011-10-17 00:40:54 -0700 | [diff] [blame] | 457 | |
TDYa127 | ee0d3fb | 2012-04-01 14:55:33 -0700 | [diff] [blame] | 458 | #if !defined(ART_USE_LLVM_COMPILER) |
Ian Rogers | b04f69f | 2011-10-17 00:40:54 -0700 | [diff] [blame] | 459 | void Thread::PopNativeToManagedRecord(const NativeToManagedRecord& record) { |
| 460 | native_to_managed_record_ = record.link_; |
| 461 | top_of_managed_stack_.SetSP(reinterpret_cast<Method**>(record.last_top_of_managed_stack_)); |
| 462 | top_of_managed_stack_pc_ = record.last_top_of_managed_stack_pc_; |
| 463 | } |
TDYa127 | ee0d3fb | 2012-04-01 14:55:33 -0700 | [diff] [blame] | 464 | #else |
| 465 | void Thread::PopNativeToManagedRecord(const NativeToManagedRecord&) { |
| 466 | LOG(FATAL) << "Called non-LLVM method with LLVM"; |
| 467 | } |
| 468 | #endif |
Ian Rogers | b04f69f | 2011-10-17 00:40:54 -0700 | [diff] [blame] | 469 | |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 470 | struct StackDumpVisitor : public Thread::StackVisitor { |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 471 | StackDumpVisitor(std::ostream& os, const Thread* thread) |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 472 | : last_method(NULL), last_line_number(0), repetition_count(0), os(os), thread(thread), |
| 473 | frame_count(0) { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 474 | } |
| 475 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 476 | virtual ~StackDumpVisitor() { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 477 | } |
| 478 | |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 479 | bool VisitFrame(const Frame& frame, uintptr_t pc) { |
Ian Rogers | 9086572 | 2011-09-19 11:11:44 -0700 | [diff] [blame] | 480 | if (!frame.HasMethod()) { |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 481 | return true; |
Ian Rogers | 9086572 | 2011-09-19 11:11:44 -0700 | [diff] [blame] | 482 | } |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 483 | const int kMaxRepetition = 3; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 484 | Method* m = frame.GetMethod(); |
| 485 | Class* c = m->GetDeclaringClass(); |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 486 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Ian Rogers | b861dc0 | 2011-11-14 17:00:05 -0800 | [diff] [blame] | 487 | const DexCache* dex_cache = c->GetDexCache(); |
| 488 | int line_number = -1; |
| 489 | if (dex_cache != NULL) { // be tolerant of bad input |
| 490 | const DexFile& dex_file = class_linker->FindDexFile(dex_cache); |
| 491 | line_number = dex_file.GetLineNumFromPC(m, m->ToDexPC(pc)); |
| 492 | } |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 493 | if (line_number == last_line_number && last_method == m) { |
| 494 | repetition_count++; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 495 | } else { |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 496 | if (repetition_count >= kMaxRepetition) { |
| 497 | os << " ... repeated " << (repetition_count - kMaxRepetition) << " times\n"; |
| 498 | } |
| 499 | repetition_count = 0; |
| 500 | last_line_number = line_number; |
| 501 | last_method = m; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 502 | } |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 503 | if (repetition_count < kMaxRepetition) { |
| 504 | os << " at " << PrettyMethod(m, false); |
| 505 | if (m->IsNative()) { |
| 506 | os << "(Native method)"; |
| 507 | } else { |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 508 | mh.ChangeMethod(m); |
| 509 | const char* source_file(mh.GetDeclaringClassSourceFile()); |
| 510 | os << "(" << (source_file != NULL ? source_file : "unavailable") |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 511 | << ":" << line_number << ")"; |
| 512 | } |
| 513 | os << "\n"; |
| 514 | } |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 515 | |
| 516 | if (frame_count++ == 0) { |
| 517 | Monitor::DescribeWait(os, thread); |
| 518 | } |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 519 | return true; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 520 | } |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 521 | MethodHelper mh; |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 522 | Method* last_method; |
| 523 | int last_line_number; |
| 524 | int repetition_count; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 525 | std::ostream& os; |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 526 | const Thread* thread; |
| 527 | int frame_count; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 528 | }; |
| 529 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 530 | void Thread::DumpStack(std::ostream& os) const { |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 531 | // If we're currently in native code, dump that stack before dumping the managed stack. |
| 532 | if (GetState() == Thread::kNative || GetState() == Thread::kVmWait) { |
| 533 | DumpNativeStack(os); |
| 534 | } |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 535 | StackDumpVisitor dumper(os, this); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 536 | WalkStack(&dumper); |
Elliott Hughes | e27955c | 2011-08-26 15:21:24 -0700 | [diff] [blame] | 537 | } |
| 538 | |
Elliott Hughes | a4060e5 | 2012-03-02 16:51:35 -0800 | [diff] [blame] | 539 | void Thread::SetStateWithoutSuspendCheck(Thread::State new_state) { |
| 540 | volatile void* raw = reinterpret_cast<volatile void*>(&state_); |
| 541 | volatile int32_t* addr = reinterpret_cast<volatile int32_t*>(raw); |
| 542 | android_atomic_release_store(new_state, addr); |
| 543 | } |
| 544 | |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 545 | Thread::State Thread::SetState(Thread::State new_state) { |
| 546 | Thread::State old_state = state_; |
| 547 | if (old_state == new_state) { |
| 548 | return old_state; |
| 549 | } |
| 550 | |
| 551 | volatile void* raw = reinterpret_cast<volatile void*>(&state_); |
| 552 | volatile int32_t* addr = reinterpret_cast<volatile int32_t*>(raw); |
| 553 | |
| 554 | if (new_state == Thread::kRunnable) { |
| 555 | /* |
| 556 | * Change our status to Thread::kRunnable. The transition requires |
Elliott Hughes | 81ff318 | 2012-03-23 20:35:56 -0700 | [diff] [blame] | 557 | * that we check for pending suspension, because the runtime considers |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 558 | * us to be "asleep" in all other states, and another thread could |
| 559 | * be performing a GC now. |
| 560 | * |
| 561 | * The order of operations is very significant here. One way to |
| 562 | * do this wrong is: |
| 563 | * |
| 564 | * GCing thread Our thread (in kNative) |
| 565 | * ------------ ---------------------- |
| 566 | * check suspend count (== 0) |
| 567 | * SuspendAllThreads() |
| 568 | * grab suspend-count lock |
| 569 | * increment all suspend counts |
| 570 | * release suspend-count lock |
| 571 | * check thread state (== kNative) |
| 572 | * all are suspended, begin GC |
| 573 | * set state to kRunnable |
| 574 | * (continue executing) |
| 575 | * |
| 576 | * We can correct this by grabbing the suspend-count lock and |
| 577 | * performing both of our operations (check suspend count, set |
| 578 | * state) while holding it, now we need to grab a mutex on every |
| 579 | * transition to kRunnable. |
| 580 | * |
| 581 | * What we do instead is change the order of operations so that |
| 582 | * the transition to kRunnable happens first. If we then detect |
| 583 | * that the suspend count is nonzero, we switch to kSuspended. |
| 584 | * |
| 585 | * Appropriate compiler and memory barriers are required to ensure |
| 586 | * that the operations are observed in the expected order. |
| 587 | * |
| 588 | * This does create a small window of opportunity where a GC in |
| 589 | * progress could observe what appears to be a running thread (if |
| 590 | * it happens to look between when we set to kRunnable and when we |
| 591 | * switch to kSuspended). At worst this only affects assertions |
| 592 | * and thread logging. (We could work around it with some sort |
| 593 | * of intermediate "pre-running" state that is generally treated |
| 594 | * as equivalent to running, but that doesn't seem worthwhile.) |
| 595 | * |
| 596 | * We can also solve this by combining the "status" and "suspend |
| 597 | * count" fields into a single 32-bit value. This trades the |
| 598 | * store/load barrier on transition to kRunnable for an atomic RMW |
| 599 | * op on all transitions and all suspend count updates (also, all |
| 600 | * accesses to status or the thread count require bit-fiddling). |
| 601 | * It also eliminates the brief transition through kRunnable when |
| 602 | * the thread is supposed to be suspended. This is possibly faster |
| 603 | * on SMP and slightly more correct, but less convenient. |
| 604 | */ |
| 605 | android_atomic_acquire_store(new_state, addr); |
Elliott Hughes | 06e3ad4 | 2012-02-07 14:51:57 -0800 | [diff] [blame] | 606 | ANNOTATE_IGNORE_READS_BEGIN(); |
| 607 | int suspend_count = suspend_count_; |
| 608 | ANNOTATE_IGNORE_READS_END(); |
| 609 | if (suspend_count != 0) { |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 610 | Runtime::Current()->GetThreadList()->FullSuspendCheck(this); |
| 611 | } |
| 612 | } else { |
| 613 | /* |
| 614 | * Not changing to Thread::kRunnable. No additional work required. |
| 615 | * |
| 616 | * We use a releasing store to ensure that, if we were runnable, |
| 617 | * any updates we previously made to objects on the managed heap |
| 618 | * will be observed before the state change. |
| 619 | */ |
| 620 | android_atomic_release_store(new_state, addr); |
| 621 | } |
| 622 | |
| 623 | return old_state; |
| 624 | } |
| 625 | |
Elliott Hughes | 761928d | 2011-11-16 18:33:03 -0800 | [diff] [blame] | 626 | bool Thread::IsSuspended() { |
Elliott Hughes | 06e3ad4 | 2012-02-07 14:51:57 -0800 | [diff] [blame] | 627 | ANNOTATE_IGNORE_READS_BEGIN(); |
| 628 | int suspend_count = suspend_count_; |
| 629 | ANNOTATE_IGNORE_READS_END(); |
| 630 | return suspend_count != 0 && GetState() != Thread::kRunnable; |
Elliott Hughes | 761928d | 2011-11-16 18:33:03 -0800 | [diff] [blame] | 631 | } |
| 632 | |
Elliott Hughes | ff73806 | 2012-02-03 15:00:42 -0800 | [diff] [blame] | 633 | static void ReportThreadSuspendTimeout(Thread* waiting_thread) { |
| 634 | Runtime* runtime = Runtime::Current(); |
| 635 | std::ostringstream ss; |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 636 | ss << "Thread suspend timeout waiting for thread " << *waiting_thread << "\n"; |
Elliott Hughes | ff73806 | 2012-02-03 15:00:42 -0800 | [diff] [blame] | 637 | runtime->DumpLockHolders(ss); |
| 638 | ss << "\n"; |
| 639 | runtime->GetThreadList()->DumpLocked(ss); |
| 640 | LOG(FATAL) << ss.str(); |
| 641 | } |
| 642 | |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 643 | void Thread::WaitUntilSuspended() { |
Elliott Hughes | 21a5bf2 | 2011-12-07 14:35:20 -0800 | [diff] [blame] | 644 | static const useconds_t kTimeoutUs = 30 * 1000000; // 30s. |
| 645 | |
| 646 | useconds_t total_delay = 0; |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 647 | useconds_t delay = 0; |
| 648 | while (GetState() == Thread::kRunnable) { |
Elliott Hughes | 21a5bf2 | 2011-12-07 14:35:20 -0800 | [diff] [blame] | 649 | if (total_delay >= kTimeoutUs) { |
Elliott Hughes | ff73806 | 2012-02-03 15:00:42 -0800 | [diff] [blame] | 650 | ReportThreadSuspendTimeout(this); |
Elliott Hughes | 21a5bf2 | 2011-12-07 14:35:20 -0800 | [diff] [blame] | 651 | } |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 652 | useconds_t new_delay = delay * 2; |
| 653 | CHECK_GE(new_delay, delay); |
| 654 | delay = new_delay; |
| 655 | if (delay == 0) { |
| 656 | sched_yield(); |
| 657 | delay = 10000; |
| 658 | } else { |
| 659 | usleep(delay); |
Elliott Hughes | 21a5bf2 | 2011-12-07 14:35:20 -0800 | [diff] [blame] | 660 | total_delay += delay; |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 661 | } |
| 662 | } |
| 663 | } |
| 664 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 665 | void Thread::ThreadExitCallback(void* arg) { |
| 666 | Thread* self = reinterpret_cast<Thread*>(arg); |
| 667 | LOG(FATAL) << "Native thread exited without calling DetachCurrentThread: " << *self; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 668 | } |
| 669 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 670 | void Thread::Startup() { |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 671 | // Allocate a TLS slot. |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 672 | 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] | 673 | |
| 674 | // Double-check the TLS slot allocation. |
| 675 | if (pthread_getspecific(pthread_key_self_) != NULL) { |
Elliott Hughes | 3d30d9b | 2011-12-07 17:35:48 -0800 | [diff] [blame] | 676 | LOG(FATAL) << "Newly-created pthread TLS slot is not NULL"; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 677 | } |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 678 | } |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 679 | |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 680 | // TODO: make more accessible? |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 681 | static Class* FindClassOrDie(ClassLinker* class_linker, const char* descriptor) { |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 682 | Class* c = class_linker->FindSystemClass(descriptor); |
| 683 | CHECK(c != NULL) << descriptor; |
| 684 | return c; |
| 685 | } |
| 686 | |
| 687 | // TODO: make more accessible? |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 688 | static Field* FindFieldOrDie(Class* c, const char* name, const char* descriptor) { |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 689 | Field* f = c->FindDeclaredInstanceField(name, descriptor); |
| 690 | CHECK(f != NULL) << PrettyClass(c) << " " << name << " " << descriptor; |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 691 | return f; |
| 692 | } |
| 693 | |
| 694 | // TODO: make more accessible? |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 695 | static Method* FindMethodOrDie(Class* c, const char* name, const char* signature) { |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 696 | Method* m = c->FindVirtualMethod(name, signature); |
| 697 | CHECK(m != NULL) << PrettyClass(c) << " " << name << " " << signature; |
| 698 | return m; |
| 699 | } |
| 700 | |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 701 | // TODO: make more accessible? |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 702 | static Field* FindStaticFieldOrDie(Class* c, const char* name, const char* descriptor) { |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 703 | Field* f = c->FindDeclaredStaticField(name, descriptor); |
| 704 | CHECK(f != NULL) << PrettyClass(c) << " " << name << " " << descriptor; |
| 705 | return f; |
| 706 | } |
| 707 | |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 708 | void Thread::FinishStartup() { |
Jesse Wilson | 9a6bae8 | 2011-11-14 14:57:30 -0500 | [diff] [blame] | 709 | CHECK(Runtime::Current()->IsStarted()); |
Brian Carlstrom | b82b687 | 2011-10-26 17:18:07 -0700 | [diff] [blame] | 710 | Thread* self = Thread::Current(); |
| 711 | |
| 712 | // Need to be kRunnable for FindClass |
| 713 | ScopedThreadStateChange tsc(self, Thread::kRunnable); |
| 714 | |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 715 | // Now the ClassLinker is ready, we can find the various Class*, Field*, and Method*s we need. |
| 716 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 717 | |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 718 | Class* Thread_class = FindClassOrDie(class_linker, "Ljava/lang/Thread;"); |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 719 | Class* UncaughtExceptionHandler_class = FindClassOrDie(class_linker, "Ljava/lang/Thread$UncaughtExceptionHandler;"); |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 720 | gThreadGroup = FindClassOrDie(class_linker, "Ljava/lang/ThreadGroup;"); |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 721 | gThreadLock = FindClassOrDie(class_linker, "Ljava/lang/ThreadLock;"); |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 722 | |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 723 | gThread_daemon = FindFieldOrDie(Thread_class, "daemon", "Z"); |
| 724 | gThread_group = FindFieldOrDie(Thread_class, "group", "Ljava/lang/ThreadGroup;"); |
| 725 | gThread_lock = FindFieldOrDie(Thread_class, "lock", "Ljava/lang/ThreadLock;"); |
| 726 | gThread_name = FindFieldOrDie(Thread_class, "name", "Ljava/lang/String;"); |
| 727 | gThread_priority = FindFieldOrDie(Thread_class, "priority", "I"); |
| 728 | gThread_uncaughtHandler = FindFieldOrDie(Thread_class, "uncaughtHandler", "Ljava/lang/Thread$UncaughtExceptionHandler;"); |
| 729 | gThread_vmData = FindFieldOrDie(Thread_class, "vmData", "I"); |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 730 | gThreadGroup_name = FindFieldOrDie(gThreadGroup, "name", "Ljava/lang/String;"); |
| 731 | gThreadGroup_mMain = FindStaticFieldOrDie(gThreadGroup, "mMain", "Ljava/lang/ThreadGroup;"); |
| 732 | gThreadGroup_mSystem = FindStaticFieldOrDie(gThreadGroup, "mSystem", "Ljava/lang/ThreadGroup;"); |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 733 | gThreadLock_thread = FindFieldOrDie(gThreadLock, "thread", "Ljava/lang/Thread;"); |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 734 | |
| 735 | gThread_run = FindMethodOrDie(Thread_class, "run", "()V"); |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 736 | gThreadGroup_removeThread = FindMethodOrDie(gThreadGroup, "removeThread", "(Ljava/lang/Thread;)V"); |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 737 | gUncaughtExceptionHandler_uncaughtException = FindMethodOrDie(UncaughtExceptionHandler_class, |
| 738 | "uncaughtException", "(Ljava/lang/Thread;Ljava/lang/Throwable;)V"); |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 739 | |
| 740 | // Finish attaching the main thread. |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 741 | Thread::Current()->CreatePeer("main", false, Thread::GetMainThreadGroup()); |
Jesse Wilson | 9a6bae8 | 2011-11-14 14:57:30 -0500 | [diff] [blame] | 742 | |
| 743 | InitBoxingMethods(); |
| 744 | class_linker->RunRootClinits(); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 745 | } |
| 746 | |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 747 | void Thread::Shutdown() { |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 748 | CHECK_PTHREAD_CALL(pthread_key_delete, (Thread::pthread_key_self_), "self key"); |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 749 | } |
| 750 | |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 751 | uint32_t Thread::LockOwnerFromThreadLock(Object* thread_lock) { |
| 752 | if (thread_lock == NULL || thread_lock->GetClass() != gThreadLock) { |
| 753 | return ThreadList::kInvalidId; |
| 754 | } |
| 755 | Object* managed_thread = gThreadLock_thread->GetObject(thread_lock); |
| 756 | if (managed_thread == NULL) { |
| 757 | return ThreadList::kInvalidId; |
| 758 | } |
| 759 | uintptr_t vmData = static_cast<uintptr_t>(gThread_vmData->GetInt(managed_thread)); |
| 760 | Thread* thread = reinterpret_cast<Thread*>(vmData); |
| 761 | if (thread == NULL) { |
| 762 | return ThreadList::kInvalidId; |
| 763 | } |
| 764 | return thread->GetThinLockId(); |
| 765 | } |
| 766 | |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 767 | Thread::Thread() |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 768 | : thin_lock_id_(0), |
| 769 | tid_(0), |
| 770 | peer_(NULL), |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 771 | top_of_managed_stack_(), |
| 772 | top_of_managed_stack_pc_(0), |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 773 | wait_mutex_(new Mutex("Thread wait mutex")), |
| 774 | wait_cond_(new ConditionVariable("Thread wait condition variable")), |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 775 | wait_monitor_(NULL), |
| 776 | interrupted_(false), |
Elliott Hughes | dc33ad5 | 2011-09-16 19:46:51 -0700 | [diff] [blame] | 777 | wait_next_(NULL), |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 778 | monitor_enter_object_(NULL), |
Elliott Hughes | dc33ad5 | 2011-09-16 19:46:51 -0700 | [diff] [blame] | 779 | card_table_(0), |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 780 | stack_end_(NULL), |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 781 | native_to_managed_record_(NULL), |
| 782 | top_sirt_(NULL), |
Logan Chien | f7ad17e | 2012-03-15 03:10:03 +0800 | [diff] [blame] | 783 | top_shadow_frame_(NULL), |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 784 | jni_env_(NULL), |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 785 | state_(Thread::kNative), |
Elliott Hughes | dc33ad5 | 2011-09-16 19:46:51 -0700 | [diff] [blame] | 786 | self_(NULL), |
| 787 | runtime_(NULL), |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 788 | exception_(NULL), |
| 789 | suspend_count_(0), |
Elliott Hughes | 234ab15 | 2011-10-26 14:02:26 -0700 | [diff] [blame] | 790 | debug_suspend_count_(0), |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 791 | class_loader_override_(NULL), |
Elliott Hughes | 418dfe7 | 2011-10-06 18:56:27 -0700 | [diff] [blame] | 792 | long_jump_context_(NULL), |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 793 | throwing_OutOfMemoryError_(false), |
Elliott Hughes | 475fc23 | 2011-10-25 15:00:35 -0700 | [diff] [blame] | 794 | pre_allocated_OutOfMemoryError_(NULL), |
jeffhao | e343b76 | 2011-12-05 16:36:44 -0800 | [diff] [blame] | 795 | debug_invoke_req_(new DebugInvokeReq), |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 796 | trace_stack_(new std::vector<TraceStackFrame>), |
| 797 | name_(new std::string("<native thread without managed peer>")) { |
Elliott Hughes | f5a7a47 | 2011-10-07 14:31:02 -0700 | [diff] [blame] | 798 | CHECK_EQ((sizeof(Thread) % 4), 0U) << sizeof(Thread); |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 799 | memset(&held_mutexes_[0], 0, sizeof(held_mutexes_)); |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 800 | } |
| 801 | |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 802 | static void MonitorExitVisitor(const Object* object, void*) { |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 803 | Object* entered_monitor = const_cast<Object*>(object); |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 804 | LOG(WARNING) << "Calling MonitorExit on object " << object << " (" << PrettyTypeOf(object) << ")" |
| 805 | << " left locked by native thread " << *Thread::Current() << " which is detaching"; |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 806 | entered_monitor->MonitorExit(Thread::Current()); |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 807 | } |
| 808 | |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 809 | void Thread::Destroy() { |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 810 | // On thread detach, all monitors entered with JNI MonitorEnter are automatically exited. |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 811 | if (jni_env_ != NULL) { |
| 812 | jni_env_->monitors.VisitRoots(MonitorExitVisitor, NULL); |
| 813 | } |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 814 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 815 | if (peer_ != NULL) { |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 816 | Thread* self = this; |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 817 | |
Elliott Hughes | 534da07 | 2012-03-27 15:17:42 -0700 | [diff] [blame] | 818 | // We may need to call user-supplied managed code. |
| 819 | SetState(Thread::kRunnable); |
| 820 | |
| 821 | HandleUncaughtExceptions(); |
| 822 | RemoveFromThreadGroup(); |
| 823 | |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 824 | // this.vmData = 0; |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 825 | SetVmData(peer_, NULL); |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 826 | |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 827 | Dbg::PostThreadDeath(self); |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 828 | |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 829 | // Thread.join() is implemented as an Object.wait() on the Thread.lock |
| 830 | // object. Signal anyone who is waiting. |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 831 | Object* lock = gThread_lock->GetObject(peer_); |
| 832 | // (This conditional is only needed for tests, where Thread.lock won't have been set.) |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 833 | if (lock != NULL) { |
| 834 | lock->MonitorEnter(self); |
| 835 | lock->NotifyAll(); |
| 836 | lock->MonitorExit(self); |
| 837 | } |
| 838 | } |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 839 | } |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 840 | |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 841 | Thread::~Thread() { |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 842 | delete jni_env_; |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 843 | jni_env_ = NULL; |
| 844 | |
| 845 | SetState(Thread::kTerminated); |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 846 | |
| 847 | delete wait_cond_; |
| 848 | delete wait_mutex_; |
| 849 | |
| 850 | delete long_jump_context_; |
Elliott Hughes | 475fc23 | 2011-10-25 15:00:35 -0700 | [diff] [blame] | 851 | |
| 852 | delete debug_invoke_req_; |
jeffhao | e343b76 | 2011-12-05 16:36:44 -0800 | [diff] [blame] | 853 | delete trace_stack_; |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 854 | delete name_; |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 855 | } |
| 856 | |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 857 | void Thread::HandleUncaughtExceptions() { |
| 858 | if (!IsExceptionPending()) { |
| 859 | return; |
| 860 | } |
| 861 | |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 862 | // Get and clear the exception. |
| 863 | Object* exception = GetException(); |
| 864 | ClearException(); |
| 865 | |
| 866 | // If the thread has its own handler, use that. |
| 867 | Object* handler = gThread_uncaughtHandler->GetObject(peer_); |
| 868 | if (handler == NULL) { |
| 869 | // Otherwise use the thread group's default handler. |
Elliott Hughes | a215526 | 2011-11-16 16:26:58 -0800 | [diff] [blame] | 870 | handler = GetThreadGroup(); |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 871 | } |
| 872 | |
| 873 | // Call the handler. |
| 874 | Method* m = handler->GetClass()->FindVirtualMethodForVirtualOrInterface(gUncaughtExceptionHandler_uncaughtException); |
Elliott Hughes | 7740579 | 2012-03-15 15:22:12 -0700 | [diff] [blame] | 875 | JValue args[2]; |
| 876 | args[0].l = peer_; |
| 877 | args[1].l = exception; |
| 878 | m->Invoke(this, handler, args, NULL); |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 879 | |
| 880 | // If the handler threw, clear that exception too. |
| 881 | ClearException(); |
| 882 | } |
| 883 | |
Elliott Hughes | a215526 | 2011-11-16 16:26:58 -0800 | [diff] [blame] | 884 | Object* Thread::GetThreadGroup() const { |
| 885 | return gThread_group->GetObject(peer_); |
| 886 | } |
| 887 | |
Brian Carlstrom | 4514d3c | 2011-10-21 17:01:31 -0700 | [diff] [blame] | 888 | void Thread::RemoveFromThreadGroup() { |
| 889 | // this.group.removeThread(this); |
| 890 | // group can be null if we're in the compiler or a test. |
Elliott Hughes | a215526 | 2011-11-16 16:26:58 -0800 | [diff] [blame] | 891 | Object* group = GetThreadGroup(); |
Brian Carlstrom | 4514d3c | 2011-10-21 17:01:31 -0700 | [diff] [blame] | 892 | if (group != NULL) { |
| 893 | Method* m = group->GetClass()->FindVirtualMethodForVirtualOrInterface(gThreadGroup_removeThread); |
Elliott Hughes | 7740579 | 2012-03-15 15:22:12 -0700 | [diff] [blame] | 894 | JValue args[1]; |
| 895 | args[0].l = peer_; |
| 896 | m->Invoke(this, group, args, NULL); |
Brian Carlstrom | 4514d3c | 2011-10-21 17:01:31 -0700 | [diff] [blame] | 897 | } |
| 898 | } |
| 899 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 900 | size_t Thread::NumSirtReferences() { |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 901 | size_t count = 0; |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 902 | for (StackIndirectReferenceTable* cur = top_sirt_; cur; cur = cur->GetLink()) { |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 903 | count += cur->NumberOfReferences(); |
| 904 | } |
| 905 | return count; |
| 906 | } |
| 907 | |
TDYa127 | 28f1a14 | 2012-03-15 21:51:52 -0700 | [diff] [blame] | 908 | size_t Thread::NumShadowFrameReferences() { |
| 909 | size_t count = 0; |
| 910 | for (ShadowFrame* cur = top_shadow_frame_; cur; cur = cur->GetLink()) { |
| 911 | count += cur->NumberOfReferences(); |
| 912 | } |
| 913 | return count; |
| 914 | } |
| 915 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 916 | bool Thread::SirtContains(jobject obj) { |
| 917 | Object** sirt_entry = reinterpret_cast<Object**>(obj); |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 918 | for (StackIndirectReferenceTable* cur = top_sirt_; cur; cur = cur->GetLink()) { |
| 919 | if (cur->Contains(sirt_entry)) { |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 920 | return true; |
| 921 | } |
| 922 | } |
| 923 | return false; |
| 924 | } |
| 925 | |
TDYa127 | 28f1a14 | 2012-03-15 21:51:52 -0700 | [diff] [blame] | 926 | bool Thread::ShadowFrameContains(jobject obj) { |
| 927 | Object** shadow_frame_entry = reinterpret_cast<Object**>(obj); |
| 928 | for (ShadowFrame* cur = top_shadow_frame_; cur; cur = cur->GetLink()) { |
| 929 | if (cur->Contains(shadow_frame_entry)) { |
| 930 | return true; |
| 931 | } |
| 932 | } |
| 933 | return false; |
| 934 | } |
| 935 | |
| 936 | bool Thread::StackReferencesContain(jobject obj) { |
| 937 | return SirtContains(obj) || ShadowFrameContains(obj); |
| 938 | } |
| 939 | |
Shih-wei Liao | 8dfc9d5 | 2011-09-28 18:06:15 -0700 | [diff] [blame] | 940 | void Thread::SirtVisitRoots(Heap::RootVisitor* visitor, void* arg) { |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 941 | for (StackIndirectReferenceTable* cur = top_sirt_; cur; cur = cur->GetLink()) { |
Shih-wei Liao | 8dfc9d5 | 2011-09-28 18:06:15 -0700 | [diff] [blame] | 942 | size_t num_refs = cur->NumberOfReferences(); |
| 943 | for (size_t j = 0; j < num_refs; j++) { |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 944 | Object* object = cur->GetReference(j); |
Brian Carlstrom | 5e73f9c | 2011-10-11 11:28:12 -0700 | [diff] [blame] | 945 | if (object != NULL) { |
| 946 | visitor(object, arg); |
| 947 | } |
Shih-wei Liao | 8dfc9d5 | 2011-09-28 18:06:15 -0700 | [diff] [blame] | 948 | } |
| 949 | } |
| 950 | } |
| 951 | |
Logan Chien | f7ad17e | 2012-03-15 03:10:03 +0800 | [diff] [blame] | 952 | void Thread::ShadowFrameVisitRoots(Heap::RootVisitor* visitor, void* arg) { |
| 953 | for (ShadowFrame* cur = top_shadow_frame_; cur; cur = cur->GetLink()) { |
| 954 | size_t num_refs = cur->NumberOfReferences(); |
| 955 | for (size_t j = 0; j < num_refs; j++) { |
| 956 | Object* object = cur->GetReference(j); |
| 957 | if (object != NULL) { |
| 958 | visitor(object, arg); |
| 959 | } |
| 960 | } |
| 961 | } |
| 962 | } |
| 963 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 964 | Object* Thread::DecodeJObject(jobject obj) { |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 965 | DCHECK(CanAccessDirectReferences()); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 966 | if (obj == NULL) { |
| 967 | return NULL; |
| 968 | } |
| 969 | IndirectRef ref = reinterpret_cast<IndirectRef>(obj); |
| 970 | IndirectRefKind kind = GetIndirectRefKind(ref); |
| 971 | Object* result; |
| 972 | switch (kind) { |
| 973 | case kLocal: |
| 974 | { |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 975 | IndirectReferenceTable& locals = jni_env_->locals; |
Elliott Hughes | cf4c6c4 | 2011-09-01 15:16:42 -0700 | [diff] [blame] | 976 | result = const_cast<Object*>(locals.Get(ref)); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 977 | break; |
| 978 | } |
| 979 | case kGlobal: |
| 980 | { |
| 981 | JavaVMExt* vm = Runtime::Current()->GetJavaVM(); |
| 982 | IndirectReferenceTable& globals = vm->globals; |
| 983 | MutexLock mu(vm->globals_lock); |
Elliott Hughes | cf4c6c4 | 2011-09-01 15:16:42 -0700 | [diff] [blame] | 984 | result = const_cast<Object*>(globals.Get(ref)); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 985 | break; |
| 986 | } |
| 987 | case kWeakGlobal: |
| 988 | { |
| 989 | JavaVMExt* vm = Runtime::Current()->GetJavaVM(); |
| 990 | IndirectReferenceTable& weak_globals = vm->weak_globals; |
| 991 | MutexLock mu(vm->weak_globals_lock); |
Elliott Hughes | cf4c6c4 | 2011-09-01 15:16:42 -0700 | [diff] [blame] | 992 | result = const_cast<Object*>(weak_globals.Get(ref)); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 993 | if (result == kClearedJniWeakGlobal) { |
| 994 | // This is a special case where it's okay to return NULL. |
| 995 | return NULL; |
| 996 | } |
| 997 | break; |
| 998 | } |
| 999 | case kSirtOrInvalid: |
| 1000 | default: |
| 1001 | // TODO: make stack indirect reference table lookup more efficient |
| 1002 | // Check if this is a local reference in the SIRT |
TDYa127 | 28f1a14 | 2012-03-15 21:51:52 -0700 | [diff] [blame] | 1003 | if (StackReferencesContain(obj)) { |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 1004 | result = *reinterpret_cast<Object**>(obj); // Read from SIRT |
Elliott Hughes | c2dc62d | 2012-01-17 20:06:12 -0800 | [diff] [blame] | 1005 | } else if (Runtime::Current()->GetJavaVM()->work_around_app_jni_bugs) { |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1006 | // Assume an invalid local reference is actually a direct pointer. |
| 1007 | result = reinterpret_cast<Object*>(obj); |
| 1008 | } else { |
Elliott Hughes | a250199 | 2011-08-26 19:39:54 -0700 | [diff] [blame] | 1009 | result = kInvalidIndirectRefObject; |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1010 | } |
| 1011 | } |
| 1012 | |
| 1013 | if (result == NULL) { |
Elliott Hughes | a250199 | 2011-08-26 19:39:54 -0700 | [diff] [blame] | 1014 | LOG(ERROR) << "JNI ERROR (app bug): use of deleted " << kind << ": " << obj; |
| 1015 | JniAbort(NULL); |
| 1016 | } else { |
| 1017 | if (result != kInvalidIndirectRefObject) { |
Elliott Hughes | b3bd5f0 | 2012-03-08 21:05:27 -0800 | [diff] [blame] | 1018 | Runtime::Current()->GetHeap()->VerifyObject(result); |
Elliott Hughes | a250199 | 2011-08-26 19:39:54 -0700 | [diff] [blame] | 1019 | } |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1020 | } |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1021 | return result; |
| 1022 | } |
| 1023 | |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1024 | class CountStackDepthVisitor : public Thread::StackVisitor { |
| 1025 | public: |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1026 | CountStackDepthVisitor() : depth_(0), skip_depth_(0), skipping_(true) {} |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1027 | |
Elliott Hughes | 1bac54f | 2012-03-16 12:48:31 -0700 | [diff] [blame] | 1028 | bool VisitFrame(const Frame& frame, uintptr_t /*pc*/) { |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1029 | // 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] | 1030 | // Note we also skip the frame if it doesn't have a method (namely the callee |
| 1031 | // save frame) |
Ian Rogers | 5167c97 | 2012-02-03 10:41:20 -0800 | [diff] [blame] | 1032 | if (skipping_ && frame.HasMethod() && |
| 1033 | !Throwable::GetJavaLangThrowable()->IsAssignableFrom(frame.GetMethod()->GetDeclaringClass())) { |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1034 | skipping_ = false; |
| 1035 | } |
| 1036 | if (!skipping_) { |
Ian Rogers | 6b0870d | 2011-12-15 19:38:12 -0800 | [diff] [blame] | 1037 | if (frame.HasMethod()) { // ignore callee save frames |
| 1038 | ++depth_; |
| 1039 | } |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1040 | } else { |
| 1041 | ++skip_depth_; |
| 1042 | } |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1043 | return true; |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 1044 | } |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1045 | |
| 1046 | int GetDepth() const { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1047 | return depth_; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1048 | } |
| 1049 | |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1050 | int GetSkipDepth() const { |
| 1051 | return skip_depth_; |
| 1052 | } |
| 1053 | |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1054 | private: |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1055 | uint32_t depth_; |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1056 | uint32_t skip_depth_; |
| 1057 | bool skipping_; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1058 | }; |
| 1059 | |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1060 | class BuildInternalStackTraceVisitor : public Thread::StackVisitor { |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1061 | public: |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 1062 | explicit BuildInternalStackTraceVisitor(int skip_depth) |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1063 | : skip_depth_(skip_depth), count_(0), pc_trace_(NULL), method_trace_(NULL), local_ref_(NULL) { |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 1064 | } |
| 1065 | |
| 1066 | bool Init(int depth, ScopedJniThreadState& ts) { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1067 | // Allocate method trace with an extra slot that will hold the PC trace |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1068 | method_trace_ = Runtime::Current()->GetClassLinker()->AllocObjectArray<Object>(depth + 1); |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1069 | if (method_trace_ == NULL) { |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 1070 | return false; |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1071 | } |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1072 | // Register a local reference as IntArray::Alloc may trigger GC |
| 1073 | local_ref_ = AddLocalReference<jobject>(ts.Env(), method_trace_); |
| 1074 | pc_trace_ = IntArray::Alloc(depth); |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1075 | if (pc_trace_ == NULL) { |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 1076 | return false; |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1077 | } |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1078 | #ifdef MOVING_GARBAGE_COLLECTOR |
| 1079 | // Re-read after potential GC |
Brian Carlstrom | 2673644 | 2012-02-16 18:24:26 -0800 | [diff] [blame] | 1080 | method_trace_ = Decode<ObjectArray<Object>*>(ts.Env(), local_ref_); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1081 | #endif |
| 1082 | // Save PC trace in last element of method trace, also places it into the |
| 1083 | // object graph. |
| 1084 | method_trace_->Set(depth, pc_trace_); |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 1085 | return true; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1086 | } |
| 1087 | |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1088 | virtual ~BuildInternalStackTraceVisitor() {} |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1089 | |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1090 | bool VisitFrame(const Frame& frame, uintptr_t pc) { |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1091 | if (method_trace_ == NULL || pc_trace_ == NULL) { |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1092 | return true; // We're probably trying to fillInStackTrace for an OutOfMemoryError. |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1093 | } |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1094 | if (skip_depth_ > 0) { |
| 1095 | skip_depth_--; |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1096 | return true; |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1097 | } |
Ian Rogers | 6b0870d | 2011-12-15 19:38:12 -0800 | [diff] [blame] | 1098 | if (!frame.HasMethod()) { |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1099 | return true; // ignore callee save frames |
Ian Rogers | 6b0870d | 2011-12-15 19:38:12 -0800 | [diff] [blame] | 1100 | } |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1101 | method_trace_->Set(count_, frame.GetMethod()); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1102 | pc_trace_->Set(count_, pc); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1103 | ++count_; |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1104 | return true; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1105 | } |
| 1106 | |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1107 | jobject GetInternalStackTrace() const { |
| 1108 | return local_ref_; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1109 | } |
| 1110 | |
| 1111 | private: |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1112 | // How many more frames to skip. |
| 1113 | int32_t skip_depth_; |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1114 | // Current position down stack trace |
| 1115 | uint32_t count_; |
| 1116 | // Array of return PC values |
| 1117 | IntArray* pc_trace_; |
| 1118 | // An array of the methods on the stack, the last entry is a reference to the |
| 1119 | // PC trace |
| 1120 | ObjectArray<Object>* method_trace_; |
| 1121 | // Local indirect reference table entry for method trace |
| 1122 | jobject local_ref_; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1123 | }; |
| 1124 | |
Elliott Hughes | a43cb5e | 2011-10-07 11:37:59 -0700 | [diff] [blame] | 1125 | // TODO: remove this. |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 1126 | static uintptr_t ManglePc(uintptr_t pc) { |
Elliott Hughes | a43cb5e | 2011-10-07 11:37:59 -0700 | [diff] [blame] | 1127 | // Move the PC back 2 bytes as a call will frequently terminate the |
| 1128 | // decoding of a particular instruction and we want to make sure we |
| 1129 | // get the Dex PC of the instruction with the call and not the |
| 1130 | // instruction following. |
| 1131 | if (pc > 0) { pc -= 2; } |
| 1132 | return pc; |
| 1133 | } |
| 1134 | |
| 1135 | // TODO: remove this. |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 1136 | static uintptr_t DemanglePc(uintptr_t pc) { |
Elliott Hughes | a43cb5e | 2011-10-07 11:37:59 -0700 | [diff] [blame] | 1137 | // Revert mangling for the case where we need the PC to return to the upcall |
Ian Rogers | 9a8a888 | 2012-03-08 02:30:55 -0800 | [diff] [blame] | 1138 | if (pc > 0) { pc += 2; } |
| 1139 | return pc; |
Elliott Hughes | a43cb5e | 2011-10-07 11:37:59 -0700 | [diff] [blame] | 1140 | } |
Ian Rogers | f57c47c | 2011-10-06 00:06:17 -0700 | [diff] [blame] | 1141 | |
Logan Chien | f7ad17e | 2012-03-15 03:10:03 +0800 | [diff] [blame] | 1142 | void Thread::PushShadowFrame(ShadowFrame* frame) { |
| 1143 | frame->SetLink(top_shadow_frame_); |
| 1144 | top_shadow_frame_ = frame; |
| 1145 | } |
| 1146 | |
| 1147 | ShadowFrame* Thread::PopShadowFrame() { |
| 1148 | CHECK(top_shadow_frame_ != NULL); |
| 1149 | ShadowFrame* frame = top_shadow_frame_; |
| 1150 | top_shadow_frame_ = frame->GetLink(); |
| 1151 | return frame; |
| 1152 | } |
| 1153 | |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1154 | void Thread::PushSirt(StackIndirectReferenceTable* sirt) { |
| 1155 | sirt->SetLink(top_sirt_); |
| 1156 | top_sirt_ = sirt; |
| 1157 | } |
| 1158 | |
| 1159 | StackIndirectReferenceTable* Thread::PopSirt() { |
| 1160 | CHECK(top_sirt_ != NULL); |
| 1161 | StackIndirectReferenceTable* sirt = top_sirt_; |
| 1162 | top_sirt_ = top_sirt_->GetLink(); |
| 1163 | return sirt; |
| 1164 | } |
| 1165 | |
TDYa127 | 9b2ba2e | 2012-03-19 10:12:32 -0700 | [diff] [blame] | 1166 | #if !defined(ART_USE_LLVM_COMPILER) // LLVM use ShadowFrame |
| 1167 | |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1168 | void Thread::WalkStack(StackVisitor* visitor, bool include_upcalls) const { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1169 | Frame frame = GetTopOfStack(); |
Elliott Hughes | a43cb5e | 2011-10-07 11:37:59 -0700 | [diff] [blame] | 1170 | uintptr_t pc = ManglePc(top_of_managed_stack_pc_); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 1171 | uint32_t trace_stack_depth = 0; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1172 | // TODO: enable this CHECK after native_to_managed_record_ is initialized during startup. |
| 1173 | // CHECK(native_to_managed_record_ != NULL); |
| 1174 | NativeToManagedRecord* record = native_to_managed_record_; |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1175 | bool method_tracing_active = Runtime::Current()->IsMethodTracingActive(); |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1176 | while (frame.GetSP() != NULL) { |
| 1177 | for ( ; frame.GetMethod() != NULL; frame.Next()) { |
Brian Carlstrom | f8bbb84 | 2012-03-14 03:01:42 -0700 | [diff] [blame] | 1178 | frame.GetMethod()->AssertPcIsWithinCode(pc); |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1179 | bool should_continue = visitor->VisitFrame(frame, pc); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1180 | if (UNLIKELY(!should_continue)) { |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1181 | return; |
| 1182 | } |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1183 | uintptr_t return_pc = frame.GetReturnPC(); |
| 1184 | if (LIKELY(!method_tracing_active)) { |
| 1185 | pc = ManglePc(return_pc); |
| 1186 | } else { |
| 1187 | if (IsTraceExitPc(return_pc)) { |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 1188 | TraceStackFrame trace_frame = GetTraceStackFrame(trace_stack_depth++); |
jeffhao | 26c0a1a | 2012-01-17 16:28:33 -0800 | [diff] [blame] | 1189 | CHECK(trace_frame.method_ == frame.GetMethod()); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 1190 | pc = ManglePc(trace_frame.return_pc_); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1191 | } else { |
| 1192 | pc = ManglePc(return_pc); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 1193 | } |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 1194 | } |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1195 | } |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1196 | if (include_upcalls) { |
| 1197 | bool should_continue = visitor->VisitFrame(frame, pc); |
| 1198 | if (!should_continue) { |
| 1199 | return; |
| 1200 | } |
| 1201 | } |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1202 | if (record == NULL) { |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1203 | return; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1204 | } |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1205 | // last_tos should return Frame instead of sp? |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1206 | frame.SetSP(reinterpret_cast<Method**>(record->last_top_of_managed_stack_)); |
Elliott Hughes | a43cb5e | 2011-10-07 11:37:59 -0700 | [diff] [blame] | 1207 | pc = ManglePc(record->last_top_of_managed_stack_pc_); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1208 | record = record->link_; |
| 1209 | } |
| 1210 | } |
| 1211 | |
TDYa127 | 9b2ba2e | 2012-03-19 10:12:32 -0700 | [diff] [blame] | 1212 | #else // defined(ART_USE_LLVM_COMPILER) // LLVM uses ShadowFrame |
| 1213 | |
| 1214 | void Thread::WalkStack(StackVisitor* visitor, bool /*include_upcalls*/) const { |
| 1215 | for (ShadowFrame* cur = top_shadow_frame_; cur; cur = cur->GetLink()) { |
| 1216 | Frame frame; |
| 1217 | frame.SetSP(reinterpret_cast<Method**>(reinterpret_cast<byte*>(cur) + |
| 1218 | ShadowFrame::MethodOffset())); |
Shih-wei Liao | 02f01fe | 2012-03-26 12:58:11 -0700 | [diff] [blame] | 1219 | bool should_continue = visitor->VisitFrame(frame, cur->GetLineNumber()); |
TDYa127 | 9b2ba2e | 2012-03-19 10:12:32 -0700 | [diff] [blame] | 1220 | if (!should_continue) { |
| 1221 | return; |
| 1222 | } |
| 1223 | } |
| 1224 | } |
| 1225 | |
| 1226 | /* |
| 1227 | * | | |
| 1228 | * | | |
| 1229 | * | | |
| 1230 | * | . | |
| 1231 | * | . | |
| 1232 | * | . | |
| 1233 | * | . | |
| 1234 | * | Method* | |
| 1235 | * | . | |
| 1236 | * | . | <-- top_shadow_frame_ (ShadowFrame*) |
| 1237 | * / +------------------------+ |
| 1238 | * ->| . | |
| 1239 | * . | . | |
| 1240 | * . | . | |
| 1241 | * /+------------------------+ |
| 1242 | * / | . | |
| 1243 | * / | . | |
| 1244 | * --- | | . | |
| 1245 | * | | | . | |
| 1246 | * | | Method* | <-- frame.GetSP() (Method**) |
| 1247 | * ShadowFrame \ | . | |
| 1248 | * | ->| . | <-- cur (ShadowFrame*) |
| 1249 | * --- /+------------------------+ |
| 1250 | * / | . | |
| 1251 | * / | . | |
| 1252 | * --- | | . | |
| 1253 | * | cur->GetLink() | | . | |
| 1254 | * | | Method* | |
| 1255 | * ShadowFrame \ | . | |
| 1256 | * | ->| . | |
| 1257 | * --- +------------------------+ |
| 1258 | * | . | |
| 1259 | * | . | |
| 1260 | * | . | |
| 1261 | * +========================+ |
| 1262 | */ |
| 1263 | |
| 1264 | #endif |
| 1265 | |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1266 | jobject Thread::CreateInternalStackTrace(JNIEnv* env) const { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1267 | // Compute depth of stack |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1268 | CountStackDepthVisitor count_visitor; |
| 1269 | WalkStack(&count_visitor); |
| 1270 | int32_t depth = count_visitor.GetDepth(); |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1271 | int32_t skip_depth = count_visitor.GetSkipDepth(); |
Shih-wei Liao | 4417536 | 2011-08-28 16:59:17 -0700 | [diff] [blame] | 1272 | |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1273 | // Transition into runnable state to work on Object*/Array* |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1274 | ScopedJniThreadState ts(env); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1275 | |
| 1276 | // Build internal stack trace |
Ian Rogers | 77f74c1 | 2012-02-16 22:35:30 -0800 | [diff] [blame] | 1277 | BuildInternalStackTraceVisitor build_trace_visitor(skip_depth); |
| 1278 | if (!build_trace_visitor.Init(depth, ts)) { |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 1279 | return NULL; // Allocation failed |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 1280 | } |
Brian Carlstrom | 2673644 | 2012-02-16 18:24:26 -0800 | [diff] [blame] | 1281 | WalkStack(&build_trace_visitor); |
| 1282 | return build_trace_visitor.GetInternalStackTrace(); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1283 | } |
| 1284 | |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1285 | jobjectArray Thread::InternalStackTraceToStackTraceElementArray(JNIEnv* env, jobject internal, |
| 1286 | jobjectArray output_array, int* stack_depth) { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1287 | // Transition into runnable state to work on Object*/Array* |
| 1288 | ScopedJniThreadState ts(env); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1289 | // Decode the internal stack trace into the depth, method trace and PC trace |
| 1290 | ObjectArray<Object>* method_trace = |
| 1291 | down_cast<ObjectArray<Object>*>(Decode<Object*>(ts.Env(), internal)); |
Ian Rogers | 9074b99 | 2011-10-26 17:41:55 -0700 | [diff] [blame] | 1292 | int32_t depth = method_trace->GetLength() - 1; |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1293 | IntArray* pc_trace = down_cast<IntArray*>(method_trace->Get(depth)); |
| 1294 | |
| 1295 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 1296 | |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1297 | jobjectArray result; |
| 1298 | ObjectArray<StackTraceElement>* java_traces; |
| 1299 | if (output_array != NULL) { |
| 1300 | // Reuse the array we were given. |
| 1301 | result = output_array; |
| 1302 | java_traces = reinterpret_cast<ObjectArray<StackTraceElement>*>(Decode<Array*>(env, |
| 1303 | output_array)); |
| 1304 | // ...adjusting the number of frames we'll write to not exceed the array length. |
| 1305 | depth = std::min(depth, java_traces->GetLength()); |
| 1306 | } else { |
| 1307 | // Create java_trace array and place in local reference table |
| 1308 | java_traces = class_linker->AllocStackTraceElementArray(depth); |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1309 | if (java_traces == NULL) { |
| 1310 | return NULL; |
| 1311 | } |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1312 | result = AddLocalReference<jobjectArray>(ts.Env(), java_traces); |
| 1313 | } |
| 1314 | |
| 1315 | if (stack_depth != NULL) { |
| 1316 | *stack_depth = depth; |
| 1317 | } |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 1318 | |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1319 | MethodHelper mh; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1320 | for (int32_t i = 0; i < depth; ++i) { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1321 | // Prepare parameters for StackTraceElement(String cls, String method, String file, int line) |
| 1322 | Method* method = down_cast<Method*>(method_trace->Get(i)); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1323 | mh.ChangeMethod(method); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1324 | uint32_t native_pc = pc_trace->Get(i); |
Shih-wei Liao | 02f01fe | 2012-03-26 12:58:11 -0700 | [diff] [blame] | 1325 | #if !defined(ART_USE_LLVM_COMPILER) |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1326 | int32_t line_number = mh.GetLineNumFromNativePC(native_pc); |
Shih-wei Liao | 02f01fe | 2012-03-26 12:58:11 -0700 | [diff] [blame] | 1327 | #else |
| 1328 | int32_t line_number = native_pc; // LLVM stored line_number in the ShadowFrame |
| 1329 | #endif |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1330 | // Allocate element, potentially triggering GC |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1331 | // TODO: reuse class_name_object via Class::name_? |
Ian Rogers | 4860131 | 2011-12-07 16:45:19 -0800 | [diff] [blame] | 1332 | const char* descriptor = mh.GetDeclaringClassDescriptor(); |
| 1333 | CHECK(descriptor != NULL); |
| 1334 | std::string class_name(PrettyDescriptor(descriptor)); |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1335 | SirtRef<String> class_name_object(String::AllocFromModifiedUtf8(class_name.c_str())); |
| 1336 | if (class_name_object.get() == NULL) { |
| 1337 | return NULL; |
| 1338 | } |
Ian Rogers | 4860131 | 2011-12-07 16:45:19 -0800 | [diff] [blame] | 1339 | const char* method_name = mh.GetName(); |
| 1340 | CHECK(method_name != NULL); |
| 1341 | SirtRef<String> method_name_object(String::AllocFromModifiedUtf8(method_name)); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1342 | if (method_name_object.get() == NULL) { |
| 1343 | return NULL; |
| 1344 | } |
Ian Rogers | 4860131 | 2011-12-07 16:45:19 -0800 | [diff] [blame] | 1345 | const char* source_file = mh.GetDeclaringClassSourceFile(); |
| 1346 | SirtRef<String> source_name_object(String::AllocFromModifiedUtf8(source_file)); |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1347 | StackTraceElement* obj = StackTraceElement::Alloc(class_name_object.get(), |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1348 | method_name_object.get(), |
| 1349 | source_name_object.get(), |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1350 | line_number); |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1351 | if (obj == NULL) { |
| 1352 | return NULL; |
| 1353 | } |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1354 | #ifdef MOVING_GARBAGE_COLLECTOR |
| 1355 | // Re-read after potential GC |
| 1356 | java_traces = Decode<ObjectArray<Object>*>(ts.Env(), result); |
| 1357 | method_trace = down_cast<ObjectArray<Object>*>(Decode<Object*>(ts.Env(), internal)); |
| 1358 | pc_trace = down_cast<IntArray*>(method_trace->Get(depth)); |
| 1359 | #endif |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 1360 | java_traces->Set(i, obj); |
| 1361 | } |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1362 | return result; |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 1363 | } |
| 1364 | |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 1365 | void Thread::ThrowNewExceptionF(const char* exception_class_descriptor, const char* fmt, ...) { |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 1366 | va_list args; |
| 1367 | va_start(args, fmt); |
Elliott Hughes | 4a2b417 | 2011-09-20 17:08:25 -0700 | [diff] [blame] | 1368 | ThrowNewExceptionV(exception_class_descriptor, fmt, args); |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 1369 | va_end(args); |
Elliott Hughes | 4a2b417 | 2011-09-20 17:08:25 -0700 | [diff] [blame] | 1370 | } |
| 1371 | |
| 1372 | void Thread::ThrowNewExceptionV(const char* exception_class_descriptor, const char* fmt, va_list ap) { |
| 1373 | std::string msg; |
| 1374 | StringAppendV(&msg, fmt, ap); |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 1375 | ThrowNewException(exception_class_descriptor, msg.c_str()); |
| 1376 | } |
Elliott Hughes | 37f7a40 | 2011-08-22 18:56:01 -0700 | [diff] [blame] | 1377 | |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 1378 | void Thread::ThrowNewException(const char* exception_class_descriptor, const char* msg) { |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 1379 | // Convert "Ljava/lang/Exception;" into JNI-style "java/lang/Exception". |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 1380 | CHECK_EQ('L', exception_class_descriptor[0]); |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 1381 | std::string descriptor(exception_class_descriptor + 1); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 1382 | CHECK_EQ(';', descriptor[descriptor.length() - 1]); |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 1383 | descriptor.erase(descriptor.length() - 1); |
| 1384 | |
| 1385 | JNIEnv* env = GetJniEnv(); |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1386 | ScopedLocalRef<jclass> exception_class(env, env->FindClass(descriptor.c_str())); |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1387 | if (exception_class.get() == NULL) { |
| 1388 | LOG(ERROR) << "Couldn't throw new " << descriptor << " because JNI FindClass failed: " |
| 1389 | << PrettyTypeOf(GetException()); |
| 1390 | CHECK(IsExceptionPending()); |
| 1391 | return; |
| 1392 | } |
Brian Carlstrom | ebd1fd2 | 2011-12-07 15:46:26 -0800 | [diff] [blame] | 1393 | if (!Runtime::Current()->IsStarted()) { |
| 1394 | // Something is trying to throw an exception without a started |
| 1395 | // runtime, which is the common case in the compiler. We won't be |
| 1396 | // able to invoke the constructor of the exception, so use |
| 1397 | // AllocObject which will not invoke a constructor. |
| 1398 | ScopedLocalRef<jthrowable> exception( |
| 1399 | env, reinterpret_cast<jthrowable>(env->AllocObject(exception_class.get()))); |
| 1400 | if (exception.get() != NULL) { |
| 1401 | ScopedJniThreadState ts(env); |
| 1402 | Throwable* t = reinterpret_cast<Throwable*>(ts.Self()->DecodeJObject(exception.get())); |
Ian Rogers | 02fbef0 | 2012-01-31 22:15:33 -0800 | [diff] [blame] | 1403 | t->SetDetailMessage(String::AllocFromModifiedUtf8(msg)); |
Brian Carlstrom | ebd1fd2 | 2011-12-07 15:46:26 -0800 | [diff] [blame] | 1404 | ts.Self()->SetException(t); |
| 1405 | } else { |
| 1406 | LOG(ERROR) << "Couldn't throw new " << descriptor << " because JNI AllocObject failed: " |
| 1407 | << PrettyTypeOf(GetException()); |
| 1408 | CHECK(IsExceptionPending()); |
| 1409 | } |
| 1410 | return; |
| 1411 | } |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1412 | int rc = env->ThrowNew(exception_class.get(), msg); |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1413 | if (rc != JNI_OK) { |
| 1414 | LOG(ERROR) << "Couldn't throw new " << descriptor << " because JNI ThrowNew failed: " |
| 1415 | << PrettyTypeOf(GetException()); |
| 1416 | CHECK(IsExceptionPending()); |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1417 | } |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 1418 | } |
| 1419 | |
Elliott Hughes | 418dfe7 | 2011-10-06 18:56:27 -0700 | [diff] [blame] | 1420 | void Thread::ThrowOutOfMemoryError(Class* c, size_t byte_count) { |
Elliott Hughes | 2ced6a5 | 2011-10-16 18:44:48 -0700 | [diff] [blame] | 1421 | std::string msg(StringPrintf("Failed to allocate a %zd-byte %s", byte_count, |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1422 | PrettyDescriptor(c).c_str())); |
Elliott Hughes | 2ced6a5 | 2011-10-16 18:44:48 -0700 | [diff] [blame] | 1423 | ThrowOutOfMemoryError(msg.c_str()); |
| 1424 | } |
| 1425 | |
| 1426 | void Thread::ThrowOutOfMemoryError(const char* msg) { |
| 1427 | LOG(ERROR) << StringPrintf("Throwing OutOfMemoryError \"%s\"%s", |
| 1428 | msg, (throwing_OutOfMemoryError_ ? " (recursive case)" : "")); |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1429 | if (!throwing_OutOfMemoryError_) { |
| 1430 | throwing_OutOfMemoryError_ = true; |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1431 | ThrowNewException("Ljava/lang/OutOfMemoryError;", NULL); |
Elliott Hughes | 418dfe7 | 2011-10-06 18:56:27 -0700 | [diff] [blame] | 1432 | } else { |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1433 | SetException(pre_allocated_OutOfMemoryError_); |
Elliott Hughes | 418dfe7 | 2011-10-06 18:56:27 -0700 | [diff] [blame] | 1434 | } |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1435 | throwing_OutOfMemoryError_ = false; |
Elliott Hughes | 79082e3 | 2011-08-25 12:07:32 -0700 | [diff] [blame] | 1436 | } |
| 1437 | |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1438 | |
Elliott Hughes | 498508c | 2011-10-17 14:58:22 -0700 | [diff] [blame] | 1439 | Thread* Thread::CurrentFromGdb() { |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1440 | return Thread::Current(); |
| 1441 | } |
| 1442 | |
| 1443 | void Thread::DumpFromGdb() const { |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 1444 | std::ostringstream ss; |
| 1445 | Dump(ss); |
Elliott Hughes | 9557241 | 2011-12-13 18:14:20 -0800 | [diff] [blame] | 1446 | std::string str(ss.str()); |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 1447 | // log to stderr for debugging command line processes |
| 1448 | std::cerr << str; |
| 1449 | #ifdef HAVE_ANDROID_OS |
| 1450 | // log to logcat for debugging frameworks processes |
| 1451 | LOG(INFO) << str; |
| 1452 | #endif |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1453 | } |
| 1454 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1455 | class CatchBlockStackVisitor : public Thread::StackVisitor { |
| 1456 | public: |
| 1457 | CatchBlockStackVisitor(Class* to_find, Context* ljc) |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1458 | : to_find_(to_find), long_jump_context_(ljc), native_method_count_(0), |
| 1459 | method_tracing_active_(Runtime::Current()->IsMethodTracingActive()) { |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1460 | #ifndef NDEBUG |
| 1461 | handler_pc_ = 0xEBADC0DE; |
| 1462 | handler_frame_.SetSP(reinterpret_cast<Method**>(0xEBADF00D)); |
| 1463 | #endif |
| 1464 | } |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1465 | |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1466 | bool VisitFrame(const Frame& fr, uintptr_t pc) { |
| 1467 | Method* method = fr.GetMethod(); |
| 1468 | if (method == NULL) { |
| 1469 | // This is the upcall, we remember the frame and last_pc so that we may |
| 1470 | // long jump to them |
| 1471 | handler_pc_ = DemanglePc(pc); |
| 1472 | handler_frame_ = fr; |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1473 | return false; // End stack walk. |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1474 | } |
| 1475 | uint32_t dex_pc = DexFile::kDexNoIndex; |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1476 | if (method->IsRuntimeMethod()) { |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1477 | // ignore callee save method |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1478 | DCHECK(method->IsCalleeSaveMethod()); |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1479 | } else if (method->IsNative()) { |
| 1480 | native_method_count_++; |
| 1481 | } else { |
| 1482 | // Unwind stack during method tracing |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1483 | if (UNLIKELY(method_tracing_active_)) { |
| 1484 | if (IsTraceExitPc(DemanglePc(pc))) { |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1485 | pc = ManglePc(TraceMethodUnwindFromCode(Thread::Current())); |
| 1486 | } |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1487 | } |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1488 | dex_pc = method->ToDexPC(pc); |
| 1489 | } |
| 1490 | if (dex_pc != DexFile::kDexNoIndex) { |
| 1491 | uint32_t found_dex_pc = method->FindCatchBlock(to_find_, dex_pc); |
| 1492 | if (found_dex_pc != DexFile::kDexNoIndex) { |
| 1493 | handler_pc_ = method->ToNativePC(found_dex_pc); |
| 1494 | handler_frame_ = fr; |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1495 | return false; // End stack walk. |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1496 | } |
| 1497 | } |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1498 | // Caller may be handler, fill in callee saves in context |
| 1499 | long_jump_context_->FillCalleeSaves(fr); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1500 | return true; // Continue stack walk. |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1501 | } |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1502 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1503 | // The type of the exception catch block to find |
| 1504 | Class* to_find_; |
| 1505 | // Frame with found handler or last frame if no handler found |
| 1506 | Frame handler_frame_; |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1507 | // PC to branch to for the handler |
| 1508 | uintptr_t handler_pc_; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1509 | // Context that will be the target of the long jump |
| 1510 | Context* long_jump_context_; |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1511 | // Number of native methods passed in crawl (equates to number of SIRTs to pop) |
| 1512 | uint32_t native_method_count_; |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1513 | // Is method tracing active? |
| 1514 | const bool method_tracing_active_; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1515 | }; |
| 1516 | |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1517 | void Thread::DeliverException() { |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1518 | const bool kDebugExceptionDelivery = false; |
Elliott Hughes | d07986f | 2011-12-06 18:27:45 -0800 | [diff] [blame] | 1519 | Throwable* exception = GetException(); // Get exception from thread |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1520 | CHECK(exception != NULL); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1521 | // 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] | 1522 | // resolution. |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1523 | ClearException(); |
| 1524 | if (kDebugExceptionDelivery) { |
Ian Rogers | a32a6fd | 2012-02-06 20:18:44 -0800 | [diff] [blame] | 1525 | String* msg = exception->GetDetailMessage(); |
| 1526 | std::string str_msg(msg != NULL ? msg->ToModifiedUtf8() : ""); |
| 1527 | DumpStack(LOG(INFO) << "Delivering exception: " << PrettyTypeOf(exception) |
| 1528 | << ": " << str_msg << std::endl); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1529 | } |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1530 | |
| 1531 | Context* long_jump_context = GetLongJumpContext(); |
| 1532 | CatchBlockStackVisitor catch_finder(exception->GetClass(), long_jump_context); |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1533 | WalkStack(&catch_finder, true); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1534 | |
Elliott Hughes | d07986f | 2011-12-06 18:27:45 -0800 | [diff] [blame] | 1535 | Method** sp; |
| 1536 | uintptr_t throw_native_pc; |
| 1537 | Method* throw_method = GetCurrentMethod(&throw_native_pc, &sp); |
| 1538 | uintptr_t catch_native_pc = catch_finder.handler_pc_; |
| 1539 | Method* catch_method = catch_finder.handler_frame_.GetMethod(); |
| 1540 | Dbg::PostException(sp, throw_method, throw_native_pc, catch_method, catch_native_pc, exception); |
| 1541 | |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1542 | if (kDebugExceptionDelivery) { |
Elliott Hughes | d07986f | 2011-12-06 18:27:45 -0800 | [diff] [blame] | 1543 | if (catch_method == NULL) { |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1544 | LOG(INFO) << "Handler is upcall"; |
| 1545 | } else { |
| 1546 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 1547 | const DexFile& dex_file = |
Elliott Hughes | d07986f | 2011-12-06 18:27:45 -0800 | [diff] [blame] | 1548 | class_linker->FindDexFile(catch_method->GetDeclaringClass()->GetDexCache()); |
| 1549 | int line_number = dex_file.GetLineNumFromPC(catch_method, |
| 1550 | catch_method->ToDexPC(catch_finder.handler_pc_)); |
| 1551 | LOG(INFO) << "Handler: " << PrettyMethod(catch_method) << " (line: " << line_number << ")"; |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1552 | } |
| 1553 | } |
| 1554 | SetException(exception); |
Ian Rogers | 9a8a888 | 2012-03-08 02:30:55 -0800 | [diff] [blame] | 1555 | CHECK_NE(catch_native_pc, 0u); |
Elliott Hughes | d07986f | 2011-12-06 18:27:45 -0800 | [diff] [blame] | 1556 | long_jump_context->SetSP(reinterpret_cast<uintptr_t>(catch_finder.handler_frame_.GetSP())); |
Ian Rogers | 9a8a888 | 2012-03-08 02:30:55 -0800 | [diff] [blame] | 1557 | long_jump_context->SetPC(catch_native_pc); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1558 | long_jump_context->DoLongJump(); |
Ian Rogers | 9a8a888 | 2012-03-08 02:30:55 -0800 | [diff] [blame] | 1559 | LOG(FATAL) << "UNREACHABLE"; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1560 | } |
| 1561 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1562 | Context* Thread::GetLongJumpContext() { |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 1563 | Context* result = long_jump_context_; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1564 | if (result == NULL) { |
| 1565 | result = Context::Create(); |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 1566 | long_jump_context_ = result; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1567 | } |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1568 | return result; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1569 | } |
| 1570 | |
TDYa127 | ee0d3fb | 2012-04-01 14:55:33 -0700 | [diff] [blame] | 1571 | #if !defined(ART_USE_LLVM_COMPILER) |
Elliott Hughes | d07986f | 2011-12-06 18:27:45 -0800 | [diff] [blame] | 1572 | Method* Thread::GetCurrentMethod(uintptr_t* pc, Method*** sp) const { |
| 1573 | Frame f = top_of_managed_stack_; |
| 1574 | Method* m = f.GetMethod(); |
Elliott Hughes | 8be2d40 | 2012-02-23 14:22:41 -0800 | [diff] [blame] | 1575 | uintptr_t native_pc = top_of_managed_stack_pc_; |
| 1576 | |
Elliott Hughes | 9fd66f5 | 2011-10-16 12:13:26 -0700 | [diff] [blame] | 1577 | // We use JNI internally for exception throwing, so it's possible to arrive |
| 1578 | // here via a "FromCode" function, in which case there's a synthetic |
| 1579 | // callee-save method at the top of the stack. These shouldn't be user-visible, |
| 1580 | // so if we find one, skip it and return the compiled method underneath. |
jeffhao | 33dc771 | 2011-11-09 17:54:24 -0800 | [diff] [blame] | 1581 | if (m != NULL && m->IsCalleeSaveMethod()) { |
Elliott Hughes | 8be2d40 | 2012-02-23 14:22:41 -0800 | [diff] [blame] | 1582 | native_pc = f.GetReturnPC(); |
Elliott Hughes | 9fd66f5 | 2011-10-16 12:13:26 -0700 | [diff] [blame] | 1583 | f.Next(); |
| 1584 | m = f.GetMethod(); |
| 1585 | } |
Elliott Hughes | d07986f | 2011-12-06 18:27:45 -0800 | [diff] [blame] | 1586 | if (pc != NULL) { |
Elliott Hughes | 8be2d40 | 2012-02-23 14:22:41 -0800 | [diff] [blame] | 1587 | *pc = (m != NULL) ? ManglePc(native_pc) : 0; |
jeffhao | 33dc771 | 2011-11-09 17:54:24 -0800 | [diff] [blame] | 1588 | } |
Elliott Hughes | d07986f | 2011-12-06 18:27:45 -0800 | [diff] [blame] | 1589 | if (sp != NULL) { |
| 1590 | *sp = f.GetSP(); |
| 1591 | } |
| 1592 | return m; |
jeffhao | 33dc771 | 2011-11-09 17:54:24 -0800 | [diff] [blame] | 1593 | } |
TDYa127 | ee0d3fb | 2012-04-01 14:55:33 -0700 | [diff] [blame] | 1594 | #else |
| 1595 | Method* Thread::GetCurrentMethod(uintptr_t*, Method***) const { |
| 1596 | ShadowFrame* frame = top_shadow_frame_; |
TDYa127 | 3db5285 | 2012-04-01 15:11:43 -0700 | [diff] [blame] | 1597 | while (frame->GetMethod()->IsNative()) { |
TDYa127 | ee0d3fb | 2012-04-01 14:55:33 -0700 | [diff] [blame] | 1598 | frame = frame->GetLink(); |
| 1599 | } |
| 1600 | return frame->GetMethod(); |
| 1601 | } |
| 1602 | #endif |
jeffhao | 33dc771 | 2011-11-09 17:54:24 -0800 | [diff] [blame] | 1603 | |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 1604 | bool Thread::HoldsLock(Object* object) { |
| 1605 | if (object == NULL) { |
| 1606 | return false; |
| 1607 | } |
Brian Carlstrom | 24a3c2e | 2011-10-17 18:07:52 -0700 | [diff] [blame] | 1608 | return object->GetThinLockId() == thin_lock_id_; |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 1609 | } |
| 1610 | |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 1611 | bool Thread::IsDaemon() { |
| 1612 | return gThread_daemon->GetBoolean(peer_); |
| 1613 | } |
| 1614 | |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1615 | class ReferenceMapVisitor : public Thread::StackVisitor { |
| 1616 | public: |
| 1617 | ReferenceMapVisitor(Context* context, Heap::RootVisitor* root_visitor, void* arg) : |
| 1618 | context_(context), root_visitor_(root_visitor), arg_(arg) { |
| 1619 | } |
| 1620 | |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1621 | bool VisitFrame(const Frame& frame, uintptr_t pc) { |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1622 | Method* m = frame.GetMethod(); |
Brian Carlstrom | 6a4be3a | 2011-10-20 16:34:03 -0700 | [diff] [blame] | 1623 | if (false) { |
jeffhao | 2504552 | 2012-03-13 19:34:37 -0700 | [diff] [blame] | 1624 | LOG(INFO) << "Visiting stack roots in " << PrettyMethod(m) |
Brian Carlstrom | 0dd7dda | 2011-10-25 15:47:53 -0700 | [diff] [blame] | 1625 | << StringPrintf("@ PC:%04x", m->ToDexPC(pc)); |
Brian Carlstrom | 6a4be3a | 2011-10-20 16:34:03 -0700 | [diff] [blame] | 1626 | } |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1627 | // Process register map (which native and callee save methods don't have) |
Ian Rogers | 3891c77 | 2011-12-06 15:38:28 -0800 | [diff] [blame] | 1628 | if (!m->IsNative() && !m->IsCalleeSaveMethod() && !m->IsProxyMethod()) { |
Brian Carlstrom | e7d856b | 2012-01-11 18:10:55 -0800 | [diff] [blame] | 1629 | CHECK(m->GetGcMap() != NULL) << PrettyMethod(m); |
| 1630 | CHECK_NE(0U, m->GetGcMapLength()) << PrettyMethod(m); |
| 1631 | verifier::PcToReferenceMap map(m->GetGcMap(), m->GetGcMapLength()); |
Ian Rogers | d81871c | 2011-10-03 13:57:23 -0700 | [diff] [blame] | 1632 | const uint8_t* reg_bitmap = map.FindBitMap(m->ToDexPC(pc)); |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1633 | CHECK(reg_bitmap != NULL); |
Elliott Hughes | 68fdbd0 | 2011-11-29 19:22:47 -0800 | [diff] [blame] | 1634 | const VmapTable vmap_table(m->GetVmapTableRaw()); |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame] | 1635 | const DexFile::CodeItem* code_item = MethodHelper(m).GetCodeItem(); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1636 | DCHECK(code_item != NULL); // can't be NULL or how would we compile its instructions? |
| 1637 | uint32_t core_spills = m->GetCoreSpillMask(); |
| 1638 | uint32_t fp_spills = m->GetFpSpillMask(); |
| 1639 | size_t frame_size = m->GetFrameSizeInBytes(); |
Brian Carlstrom | 0dd7dda | 2011-10-25 15:47:53 -0700 | [diff] [blame] | 1640 | // For all dex registers in the bitmap |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1641 | size_t num_regs = std::min(map.RegWidth() * 8, |
| 1642 | static_cast<size_t>(code_item->registers_size_)); |
Brian Carlstrom | 0dd7dda | 2011-10-25 15:47:53 -0700 | [diff] [blame] | 1643 | for (size_t reg = 0; reg < num_regs; ++reg) { |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1644 | // Does this register hold a reference? |
| 1645 | if (TestBitmap(reg, reg_bitmap)) { |
Elliott Hughes | 68fdbd0 | 2011-11-29 19:22:47 -0800 | [diff] [blame] | 1646 | uint32_t vmap_offset; |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1647 | Object* ref; |
Elliott Hughes | 68fdbd0 | 2011-11-29 19:22:47 -0800 | [diff] [blame] | 1648 | if (vmap_table.IsInContext(reg, vmap_offset)) { |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1649 | // Compute the register we need to load from the context |
| 1650 | uint32_t spill_mask = m->GetCoreSpillMask(); |
Brian Carlstrom | 0dd7dda | 2011-10-25 15:47:53 -0700 | [diff] [blame] | 1651 | CHECK_LT(vmap_offset, static_cast<uint32_t>(__builtin_popcount(spill_mask))); |
Ian Rogers | f57c47c | 2011-10-06 00:06:17 -0700 | [diff] [blame] | 1652 | uint32_t matches = 0; |
| 1653 | uint32_t spill_shifts = 0; |
| 1654 | while (matches != (vmap_offset + 1)) { |
Brian Carlstrom | 0dd7dda | 2011-10-25 15:47:53 -0700 | [diff] [blame] | 1655 | DCHECK_NE(spill_mask, 0u); |
Ian Rogers | f57c47c | 2011-10-06 00:06:17 -0700 | [diff] [blame] | 1656 | matches += spill_mask & 1; // Add 1 if the low bit is set |
| 1657 | spill_mask >>= 1; |
| 1658 | spill_shifts++; |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1659 | } |
Ian Rogers | f57c47c | 2011-10-06 00:06:17 -0700 | [diff] [blame] | 1660 | spill_shifts--; // wind back one as we want the last match |
| 1661 | ref = reinterpret_cast<Object*>(context_->GetGPR(spill_shifts)); |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1662 | } else { |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1663 | ref = reinterpret_cast<Object*>(frame.GetVReg(code_item, core_spills, fp_spills, |
| 1664 | frame_size, reg)); |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1665 | } |
Shih-wei Liao | 4f894e3 | 2011-09-27 21:33:19 -0700 | [diff] [blame] | 1666 | if (ref != NULL) { |
| 1667 | root_visitor_(ref, arg_); |
| 1668 | } |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1669 | } |
| 1670 | } |
| 1671 | } |
| 1672 | context_->FillCalleeSaves(frame); |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1673 | return true; |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1674 | } |
| 1675 | |
| 1676 | private: |
| 1677 | bool TestBitmap(int reg, const uint8_t* reg_vector) { |
| 1678 | return ((reg_vector[reg / 8] >> (reg % 8)) & 0x01) != 0; |
| 1679 | } |
| 1680 | |
| 1681 | // Context used to build up picture of callee saves |
| 1682 | Context* context_; |
| 1683 | // Call-back when we visit a root |
| 1684 | Heap::RootVisitor* root_visitor_; |
| 1685 | // Argument to call-back |
| 1686 | void* arg_; |
| 1687 | }; |
| 1688 | |
| 1689 | void Thread::VisitRoots(Heap::RootVisitor* visitor, void* arg) { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1690 | if (exception_ != NULL) { |
| 1691 | visitor(exception_, arg); |
| 1692 | } |
| 1693 | if (peer_ != NULL) { |
| 1694 | visitor(peer_, arg); |
| 1695 | } |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1696 | if (pre_allocated_OutOfMemoryError_ != NULL) { |
| 1697 | visitor(pre_allocated_OutOfMemoryError_, arg); |
| 1698 | } |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1699 | if (class_loader_override_ != NULL) { |
| 1700 | visitor(class_loader_override_, arg); |
| 1701 | } |
Elliott Hughes | 410c0c8 | 2011-09-01 17:58:25 -0700 | [diff] [blame] | 1702 | jni_env_->locals.VisitRoots(visitor, arg); |
| 1703 | jni_env_->monitors.VisitRoots(visitor, arg); |
Shih-wei Liao | 8dfc9d5 | 2011-09-28 18:06:15 -0700 | [diff] [blame] | 1704 | |
| 1705 | SirtVisitRoots(visitor, arg); |
Logan Chien | f7ad17e | 2012-03-15 03:10:03 +0800 | [diff] [blame] | 1706 | ShadowFrameVisitRoots(visitor, arg); |
Shih-wei Liao | 8dfc9d5 | 2011-09-28 18:06:15 -0700 | [diff] [blame] | 1707 | |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1708 | // Cheat and steal the long jump context. Assume that we are not doing a GC during exception |
| 1709 | // delivery. |
| 1710 | Context* context = GetLongJumpContext(); |
| 1711 | // Visit roots on this thread's stack |
| 1712 | ReferenceMapVisitor mapper(context, visitor, arg); |
| 1713 | WalkStack(&mapper); |
Elliott Hughes | 410c0c8 | 2011-09-01 17:58:25 -0700 | [diff] [blame] | 1714 | } |
| 1715 | |
jeffhao | 2504552 | 2012-03-13 19:34:37 -0700 | [diff] [blame] | 1716 | #if VERIFY_OBJECT_ENABLED |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 1717 | static void VerifyObject(const Object* obj, void*) { |
jeffhao | 2504552 | 2012-03-13 19:34:37 -0700 | [diff] [blame] | 1718 | Runtime::Current()->GetHeap()->VerifyObject(obj); |
| 1719 | } |
| 1720 | |
| 1721 | void Thread::VerifyStack() { |
jeffhao | e66ac79 | 2012-03-19 16:08:46 -0700 | [diff] [blame] | 1722 | UniquePtr<Context> context(Context::Create()); |
| 1723 | ReferenceMapVisitor mapper(context.get(), VerifyObject, NULL); |
jeffhao | 2504552 | 2012-03-13 19:34:37 -0700 | [diff] [blame] | 1724 | WalkStack(&mapper); |
| 1725 | } |
| 1726 | #endif |
| 1727 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 1728 | static const char* kStateNames[] = { |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 1729 | "Terminated", |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 1730 | "Runnable", |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 1731 | "TimedWaiting", |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 1732 | "Blocked", |
| 1733 | "Waiting", |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 1734 | "Initializing", |
| 1735 | "Starting", |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 1736 | "Native", |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 1737 | "VmWait", |
| 1738 | "Suspended", |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 1739 | }; |
| 1740 | std::ostream& operator<<(std::ostream& os, const Thread::State& state) { |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 1741 | int32_t int_state = static_cast<int32_t>(state); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 1742 | if (state >= Thread::kTerminated && state <= Thread::kSuspended) { |
| 1743 | os << kStateNames[int_state]; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 1744 | } else { |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 1745 | os << "State[" << int_state << "]"; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 1746 | } |
| 1747 | return os; |
| 1748 | } |
| 1749 | |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 1750 | std::ostream& operator<<(std::ostream& os, const Thread& thread) { |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 1751 | thread.Dump(os, false); |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 1752 | return os; |
| 1753 | } |
| 1754 | |
Elliott Hughes | a4060e5 | 2012-03-02 16:51:35 -0800 | [diff] [blame] | 1755 | void Thread::CheckSafeToLockOrUnlock(MutexRank rank, bool is_locking) { |
Elliott Hughes | 17057b1 | 2012-04-03 10:22:39 -0700 | [diff] [blame] | 1756 | if (this == NULL) { |
| 1757 | CHECK(Runtime::Current()->IsShuttingDown()); |
| 1758 | return; |
| 1759 | } |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 1760 | if (is_locking) { |
| 1761 | if (held_mutexes_[rank] == 0) { |
| 1762 | bool bad_mutexes_held = false; |
| 1763 | for (int i = kMaxMutexRank; i > rank; --i) { |
| 1764 | if (held_mutexes_[i] != 0) { |
| 1765 | LOG(ERROR) << "holding " << static_cast<MutexRank>(i) << " while " << (is_locking ? "locking" : "unlocking") << " " << rank; |
| 1766 | bad_mutexes_held = true; |
| 1767 | } |
| 1768 | } |
Elliott Hughes | b5db3bb | 2012-03-29 20:00:31 -0700 | [diff] [blame] | 1769 | CHECK(!bad_mutexes_held) << rank; |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 1770 | } |
| 1771 | ++held_mutexes_[rank]; |
| 1772 | } else { |
Elliott Hughes | b5db3bb | 2012-03-29 20:00:31 -0700 | [diff] [blame] | 1773 | CHECK_GT(held_mutexes_[rank], 0U) << rank; |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 1774 | --held_mutexes_[rank]; |
| 1775 | } |
| 1776 | } |
| 1777 | |
Elliott Hughes | a4060e5 | 2012-03-02 16:51:35 -0800 | [diff] [blame] | 1778 | void Thread::CheckSafeToWait(MutexRank rank) { |
Elliott Hughes | 17057b1 | 2012-04-03 10:22:39 -0700 | [diff] [blame] | 1779 | if (this == NULL) { |
| 1780 | CHECK(Runtime::Current()->IsShuttingDown()); |
| 1781 | return; |
| 1782 | } |
Elliott Hughes | a4060e5 | 2012-03-02 16:51:35 -0800 | [diff] [blame] | 1783 | bool bad_mutexes_held = false; |
| 1784 | for (int i = kMaxMutexRank; i >= 0; --i) { |
| 1785 | if (i != rank && held_mutexes_[i] != 0) { |
| 1786 | LOG(ERROR) << "holding " << static_cast<MutexRank>(i) << " while doing condition variable wait on " << rank; |
| 1787 | bad_mutexes_held = true; |
| 1788 | } |
| 1789 | } |
| 1790 | if (held_mutexes_[rank] == 0) { |
| 1791 | LOG(ERROR) << "*not* holding " << rank << " while doing condition variable wait on it"; |
| 1792 | bad_mutexes_held = true; |
| 1793 | } |
| 1794 | CHECK(!bad_mutexes_held); |
| 1795 | } |
| 1796 | |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 1797 | } // namespace art |