Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 16 | |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 17 | #include "thread.h" |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 18 | |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 19 | #include <dynamic_annotations.h> |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 20 | #include <pthread.h> |
Elliott Hughes | 2acf36d | 2012-04-17 13:30:13 -0700 | [diff] [blame] | 21 | #include <signal.h> |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 22 | #include <sys/mman.h> |
Brian Carlstrom | dbf05b7 | 2011-12-15 00:55:24 -0800 | [diff] [blame] | 23 | #include <sys/resource.h> |
| 24 | #include <sys/time.h> |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 25 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 26 | #include <algorithm> |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 27 | #include <bitset> |
Elliott Hughes | eb4f614 | 2011-07-15 17:43:51 -0700 | [diff] [blame] | 28 | #include <cerrno> |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 29 | #include <iostream> |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 30 | #include <list> |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 31 | |
Elliott Hughes | 872d4ec | 2011-10-21 17:07:15 -0700 | [diff] [blame] | 32 | #include "debugger.h" |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 33 | #include "class_linker.h" |
Brian Carlstrom | df14324 | 2011-10-10 18:05:34 -0700 | [diff] [blame] | 34 | #include "class_loader.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" |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 52 | #include "verifier/gc_map.h" |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 53 | |
| 54 | namespace art { |
| 55 | |
| 56 | pthread_key_t Thread::pthread_key_self_; |
| 57 | |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 58 | static Class* gThreadGroup = NULL; |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 59 | static Class* gThreadLock = NULL; |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 60 | static Field* gThread_daemon = NULL; |
| 61 | static Field* gThread_group = NULL; |
| 62 | static Field* gThread_lock = NULL; |
| 63 | static Field* gThread_name = NULL; |
| 64 | static Field* gThread_priority = NULL; |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 65 | static Field* gThread_uncaughtHandler = NULL; |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 66 | static Field* gThread_vmData = NULL; |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 67 | static Field* gThreadGroup_mMain = NULL; |
| 68 | static Field* gThreadGroup_mSystem = NULL; |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 69 | static Field* gThreadGroup_name = NULL; |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 70 | static Field* gThreadLock_thread = NULL; |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 71 | static Method* gThread_run = NULL; |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 72 | static Method* gThreadGroup_removeThread = NULL; |
| 73 | static Method* gUncaughtExceptionHandler_uncaughtException = NULL; |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 74 | |
Elliott Hughes | 7dc5166 | 2012-05-16 14:48:43 -0700 | [diff] [blame] | 75 | static const char* kThreadNameDuringStartup = "<native thread without managed peer>"; |
| 76 | |
Ian Rogers | 5d76c43 | 2011-10-31 21:42:49 -0700 | [diff] [blame] | 77 | void Thread::InitCardTable() { |
Elliott Hughes | b3bd5f0 | 2012-03-08 21:05:27 -0800 | [diff] [blame] | 78 | card_table_ = Runtime::Current()->GetHeap()->GetCardTable()->GetBiasedBegin(); |
Ian Rogers | 5d76c43 | 2011-10-31 21:42:49 -0700 | [diff] [blame] | 79 | } |
| 80 | |
Elliott Hughes | 99250ba | 2012-04-17 11:09:17 -0700 | [diff] [blame] | 81 | #if !defined(__APPLE__) |
Elliott Hughes | 3ea0f42 | 2012-04-16 17:01:43 -0700 | [diff] [blame] | 82 | static void UnimplementedEntryPoint() { |
| 83 | UNIMPLEMENTED(FATAL); |
| 84 | } |
Elliott Hughes | 99250ba | 2012-04-17 11:09:17 -0700 | [diff] [blame] | 85 | #endif |
Elliott Hughes | 3ea0f42 | 2012-04-16 17:01:43 -0700 | [diff] [blame] | 86 | |
buzbee | 3ea4ec5 | 2011-08-22 17:37:19 -0700 | [diff] [blame] | 87 | void Thread::InitFunctionPointers() { |
Elliott Hughes | 99250ba | 2012-04-17 11:09:17 -0700 | [diff] [blame] | 88 | #if !defined(__APPLE__) // The Mac GCC is too old to accept this code. |
Elliott Hughes | 3ea0f42 | 2012-04-16 17:01:43 -0700 | [diff] [blame] | 89 | // Insert a placeholder so we can easily tell if we call an unimplemented entry point. |
| 90 | uintptr_t* begin = reinterpret_cast<uintptr_t*>(&entrypoints_); |
| 91 | uintptr_t* end = reinterpret_cast<uintptr_t*>(reinterpret_cast<uint8_t*>(begin) + sizeof(entrypoints_)); |
| 92 | for (uintptr_t* it = begin; it != end; ++it) { |
| 93 | *it = reinterpret_cast<uintptr_t>(UnimplementedEntryPoint); |
| 94 | } |
Elliott Hughes | 99250ba | 2012-04-17 11:09:17 -0700 | [diff] [blame] | 95 | #endif |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 96 | InitEntryPoints(&entrypoints_); |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 97 | } |
| 98 | |
| 99 | void Thread::SetDebuggerUpdatesEnabled(bool enabled) { |
| 100 | LOG(INFO) << "Turning debugger updates " << (enabled ? "on" : "off") << " for " << *this; |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 101 | #if !defined(ART_USE_LLVM_COMPILER) |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 102 | ChangeDebuggerEntryPoint(&entrypoints_, enabled); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 103 | #else |
| 104 | UNIMPLEMENTED(FATAL); |
| 105 | #endif |
buzbee | 3ea4ec5 | 2011-08-22 17:37:19 -0700 | [diff] [blame] | 106 | } |
| 107 | |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 108 | void Thread::InitTid() { |
| 109 | tid_ = ::art::GetTid(); |
| 110 | } |
| 111 | |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 112 | void Thread::InitAfterFork() { |
| 113 | InitTid(); |
Elliott Hughes | 7dc5166 | 2012-05-16 14:48:43 -0700 | [diff] [blame] | 114 | |
Elliott Hughes | 3147a23 | 2011-10-12 15:55:07 -0700 | [diff] [blame] | 115 | #if defined(__BIONIC__) |
| 116 | // Work around a bionic bug. |
| 117 | struct bionic_pthread_internal_t { |
| 118 | void* next; |
| 119 | void** pref; |
| 120 | pthread_attr_t attr; |
| 121 | pid_t kernel_id; |
| 122 | // et cetera. we just need 'kernel_id' so we can stop here. |
| 123 | }; |
Elliott Hughes | 7dc5166 | 2012-05-16 14:48:43 -0700 | [diff] [blame] | 124 | bionic_pthread_internal_t* self = reinterpret_cast<bionic_pthread_internal_t*>(pthread_self()); |
| 125 | if (self->kernel_id == tid_) { |
| 126 | // TODO: if you see this logging, you can remove this code! |
| 127 | LOG(INFO) << "*** this tree doesn't have the bionic pthread kernel_id bug"; |
| 128 | } |
| 129 | self->kernel_id = tid_; |
Elliott Hughes | 3147a23 | 2011-10-12 15:55:07 -0700 | [diff] [blame] | 130 | #endif |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 131 | } |
| 132 | |
Brian Carlstrom | 78128a6 | 2011-09-15 17:21:19 -0700 | [diff] [blame] | 133 | void* Thread::CreateCallback(void* arg) { |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 134 | Thread* self = reinterpret_cast<Thread*>(arg); |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 135 | self->Init(); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 136 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 137 | // Wait until it's safe to start running code. (There may have been a suspend-all |
| 138 | // in progress while we were starting up.) |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 139 | Runtime* runtime = Runtime::Current(); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 140 | runtime->GetThreadList()->WaitForGo(); |
| 141 | |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 142 | { |
Elliott Hughes | 34e0696 | 2012-04-09 13:55:55 -0700 | [diff] [blame] | 143 | CHECK_EQ(self->GetState(), kRunnable); |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 144 | SirtRef<String> thread_name(self->GetThreadName()); |
| 145 | self->SetThreadName(thread_name->ToModifiedUtf8().c_str()); |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 146 | } |
| 147 | |
Elliott Hughes | 872d4ec | 2011-10-21 17:07:15 -0700 | [diff] [blame] | 148 | Dbg::PostThreadStart(self); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 149 | |
| 150 | // Invoke the 'run' method of our java.lang.Thread. |
| 151 | CHECK(self->peer_ != NULL); |
| 152 | Object* receiver = self->peer_; |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 153 | Method* m = receiver->GetClass()->FindVirtualMethodForVirtualOrInterface(gThread_run); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 154 | m->Invoke(self, receiver, NULL, NULL); |
| 155 | |
| 156 | // Detach. |
| 157 | runtime->GetThreadList()->Unregister(); |
| 158 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 159 | return NULL; |
| 160 | } |
| 161 | |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 162 | static void SetVmData(Object* managed_thread, Thread* native_thread) { |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 163 | gThread_vmData->SetInt(managed_thread, reinterpret_cast<uintptr_t>(native_thread)); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 164 | } |
| 165 | |
Elliott Hughes | 761928d | 2011-11-16 18:33:03 -0800 | [diff] [blame] | 166 | Thread* Thread::FromManagedThread(Object* thread_peer) { |
| 167 | return reinterpret_cast<Thread*>(static_cast<uintptr_t>(gThread_vmData->GetInt(thread_peer))); |
| 168 | } |
| 169 | |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 170 | Thread* Thread::FromManagedThread(JNIEnv* env, jobject java_thread) { |
Elliott Hughes | 761928d | 2011-11-16 18:33:03 -0800 | [diff] [blame] | 171 | return FromManagedThread(Decode<Object*>(env, java_thread)); |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 172 | } |
| 173 | |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 174 | static size_t FixStackSize(size_t stack_size) { |
Elliott Hughes | 7502e2a | 2011-10-02 13:24:37 -0700 | [diff] [blame] | 175 | // A stack size of zero means "use the default". |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 176 | if (stack_size == 0) { |
| 177 | stack_size = Runtime::Current()->GetDefaultStackSize(); |
| 178 | } |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 179 | |
Brian Carlstrom | 6414a97 | 2012-04-14 14:20:04 -0700 | [diff] [blame] | 180 | // Dalvik used the bionic pthread default stack size for native threads, |
| 181 | // so include that here to support apps that expect large native stacks. |
| 182 | stack_size += 1 * MB; |
| 183 | |
| 184 | |
Elliott Hughes | 7502e2a | 2011-10-02 13:24:37 -0700 | [diff] [blame] | 185 | // It's not possible to request a stack smaller than the system-defined PTHREAD_STACK_MIN. |
| 186 | if (stack_size < PTHREAD_STACK_MIN) { |
| 187 | stack_size = PTHREAD_STACK_MIN; |
| 188 | } |
| 189 | |
| 190 | // It's likely that callers are trying to ensure they have at least a certain amount of |
| 191 | // stack space, so we should add our reserved space on top of what they requested, rather |
| 192 | // than implicitly take it away from them. |
| 193 | stack_size += Thread::kStackOverflowReservedBytes; |
| 194 | |
| 195 | // Some systems require the stack size to be a multiple of the system page size, so round up. |
| 196 | stack_size = RoundUp(stack_size, kPageSize); |
| 197 | |
| 198 | return stack_size; |
| 199 | } |
| 200 | |
Elliott Hughes | d8af159 | 2012-04-16 20:40:15 -0700 | [diff] [blame] | 201 | static void SigAltStack(stack_t* new_stack, stack_t* old_stack) { |
| 202 | if (sigaltstack(new_stack, old_stack) == -1) { |
| 203 | PLOG(FATAL) << "sigaltstack failed"; |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | static void SetUpAlternateSignalStack() { |
| 208 | // Create and set an alternate signal stack. |
| 209 | stack_t ss; |
| 210 | ss.ss_sp = new uint8_t[SIGSTKSZ]; |
| 211 | ss.ss_size = SIGSTKSZ; |
| 212 | ss.ss_flags = 0; |
| 213 | CHECK(ss.ss_sp != NULL); |
| 214 | SigAltStack(&ss, NULL); |
| 215 | |
| 216 | // Double-check that it worked. |
| 217 | ss.ss_sp = NULL; |
| 218 | SigAltStack(NULL, &ss); |
| 219 | VLOG(threads) << "Alternate signal stack is " << PrettySize(ss.ss_size) << " at " << ss.ss_sp; |
| 220 | } |
| 221 | |
| 222 | static void TearDownAlternateSignalStack() { |
| 223 | // Get the pointer so we can free the memory. |
| 224 | stack_t ss; |
| 225 | SigAltStack(NULL, &ss); |
| 226 | uint8_t* allocated_signal_stack = reinterpret_cast<uint8_t*>(ss.ss_sp); |
| 227 | |
| 228 | // Tell the kernel to stop using it. |
| 229 | ss.ss_sp = NULL; |
| 230 | ss.ss_flags = SS_DISABLE; |
Elliott Hughes | 4c5231d | 2012-04-18 16:54:31 -0700 | [diff] [blame] | 231 | ss.ss_size = SIGSTKSZ; // Avoid ENOMEM failure with Mac OS' buggy libc. |
Elliott Hughes | d8af159 | 2012-04-16 20:40:15 -0700 | [diff] [blame] | 232 | SigAltStack(&ss, NULL); |
| 233 | |
| 234 | // Free it. |
| 235 | delete[] allocated_signal_stack; |
| 236 | } |
| 237 | |
Elliott Hughes | 7502e2a | 2011-10-02 13:24:37 -0700 | [diff] [blame] | 238 | void Thread::Create(Object* peer, size_t stack_size) { |
| 239 | CHECK(peer != NULL); |
| 240 | |
| 241 | stack_size = FixStackSize(stack_size); |
| 242 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 243 | Thread* native_thread = new Thread; |
| 244 | native_thread->peer_ = peer; |
| 245 | |
| 246 | // Thread.start is synchronized, so we know that vmData is 0, |
| 247 | // and know that we're not racing to assign it. |
| 248 | SetVmData(peer, native_thread); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 249 | |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 250 | { |
Elliott Hughes | 34e0696 | 2012-04-09 13:55:55 -0700 | [diff] [blame] | 251 | ScopedThreadStateChange tsc(Thread::Current(), kVmWait); |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 252 | pthread_t new_pthread; |
| 253 | pthread_attr_t attr; |
| 254 | CHECK_PTHREAD_CALL(pthread_attr_init, (&attr), "new thread"); |
| 255 | CHECK_PTHREAD_CALL(pthread_attr_setdetachstate, (&attr, PTHREAD_CREATE_DETACHED), "PTHREAD_CREATE_DETACHED"); |
| 256 | CHECK_PTHREAD_CALL(pthread_attr_setstacksize, (&attr, stack_size), stack_size); |
| 257 | CHECK_PTHREAD_CALL(pthread_create, (&new_pthread, &attr, Thread::CreateCallback, native_thread), "new thread"); |
| 258 | CHECK_PTHREAD_CALL(pthread_attr_destroy, (&attr), "new thread"); |
| 259 | } |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 260 | |
| 261 | // Let the child know when it's safe to start running. |
| 262 | Runtime::Current()->GetThreadList()->SignalGo(native_thread); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 263 | } |
| 264 | |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 265 | void Thread::Init() { |
| 266 | // This function does all the initialization that must be run by the native thread it applies to. |
| 267 | // (When we create a new thread from managed code, we allocate the Thread* in Thread::Create so |
| 268 | // we can handshake with the corresponding native thread when it's ready.) Check this native |
| 269 | // thread hasn't been through here already... |
Elliott Hughes | cac6cc7 | 2011-11-03 20:31:21 -0700 | [diff] [blame] | 270 | CHECK(Thread::Current() == NULL); |
| 271 | |
Elliott Hughes | d8af159 | 2012-04-16 20:40:15 -0700 | [diff] [blame] | 272 | SetUpAlternateSignalStack(); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 273 | InitCpu(); |
| 274 | InitFunctionPointers(); |
Ian Rogers | 5d76c43 | 2011-10-31 21:42:49 -0700 | [diff] [blame] | 275 | InitCardTable(); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 276 | |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 277 | Runtime* runtime = Runtime::Current(); |
| 278 | CHECK(runtime != NULL); |
| 279 | |
| 280 | thin_lock_id_ = runtime->GetThreadList()->AllocThreadId(); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 281 | |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 282 | InitTid(); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 283 | InitStackHwm(); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 284 | |
Elliott Hughes | 3147a23 | 2011-10-12 15:55:07 -0700 | [diff] [blame] | 285 | CHECK_PTHREAD_CALL(pthread_setspecific, (Thread::pthread_key_self_, this), "attach"); |
Elliott Hughes | a5780da | 2011-07-17 11:39:39 -0700 | [diff] [blame] | 286 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 287 | jni_env_ = new JNIEnvExt(this, runtime->GetJavaVM()); |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 288 | |
Elliott Hughes | 7a3aeb4 | 2011-09-25 17:39:47 -0700 | [diff] [blame] | 289 | runtime->GetThreadList()->Register(); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 290 | } |
| 291 | |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 292 | 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] | 293 | Thread* self = new Thread; |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 294 | self->Init(); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 295 | |
Elliott Hughes | 34e0696 | 2012-04-09 13:55:55 -0700 | [diff] [blame] | 296 | self->SetState(kNative); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 297 | |
Elliott Hughes | cac6cc7 | 2011-11-03 20:31:21 -0700 | [diff] [blame] | 298 | // If we're the main thread, ClassLinker won't be created until after we're attached, |
| 299 | // 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] | 300 | // In the compiler, all threads need this hack, because no-one's going to be getting |
| 301 | // a native peer! |
| 302 | if (self->thin_lock_id_ != ThreadList::kMainId && !Runtime::Current()->IsCompiler()) { |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 303 | self->CreatePeer(thread_name, as_daemon, thread_group); |
Elliott Hughes | 06e3ad4 | 2012-02-07 14:51:57 -0800 | [diff] [blame] | 304 | } else { |
| 305 | // 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] | 306 | if (thread_name != NULL) { |
| 307 | self->name_->assign(thread_name); |
| 308 | ::art::SetThreadName(thread_name); |
| 309 | } |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 310 | } |
Elliott Hughes | cac6cc7 | 2011-11-03 20:31:21 -0700 | [diff] [blame] | 311 | |
| 312 | self->GetJniEnv()->locals.AssertEmpty(); |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 313 | return self; |
| 314 | } |
| 315 | |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 316 | Object* Thread::GetMainThreadGroup() { |
Ian Rogers | 0045a29 | 2012-03-31 21:08:41 -0700 | [diff] [blame] | 317 | if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(gThreadGroup, true, true)) { |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 318 | return NULL; |
| 319 | } |
| 320 | return gThreadGroup_mMain->GetObject(NULL); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 321 | } |
| 322 | |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 323 | Object* Thread::GetSystemThreadGroup() { |
Ian Rogers | 0045a29 | 2012-03-31 21:08:41 -0700 | [diff] [blame] | 324 | if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(gThreadGroup, true, true)) { |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 325 | return NULL; |
| 326 | } |
| 327 | return gThreadGroup_mSystem->GetObject(NULL); |
| 328 | } |
| 329 | |
| 330 | void Thread::CreatePeer(const char* name, bool as_daemon, Object* thread_group) { |
Jesse Wilson | 9a6bae8 | 2011-11-14 14:57:30 -0500 | [diff] [blame] | 331 | CHECK(Runtime::Current()->IsStarted()); |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 332 | JNIEnv* env = jni_env_; |
| 333 | |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 334 | if (thread_group == NULL) { |
| 335 | thread_group = Thread::GetMainThreadGroup(); |
| 336 | } |
| 337 | ScopedLocalRef<jobject> java_thread_group(env, AddLocalReference<jobject>(env, thread_group)); |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 338 | ScopedLocalRef<jobject> thread_name(env, env->NewStringUTF(name)); |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 339 | jint thread_priority = GetNativePriority(); |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 340 | jboolean thread_is_daemon = as_daemon; |
| 341 | |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 342 | ScopedLocalRef<jclass> c(env, env->FindClass("java/lang/Thread")); |
Ian Rogers | 5d4bdc2 | 2011-11-02 22:15:43 -0700 | [diff] [blame] | 343 | ScopedLocalRef<jobject> peer(env, env->AllocObject(c.get())); |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 344 | peer_ = DecodeJObject(peer.get()); |
Ian Rogers | 5d4bdc2 | 2011-11-02 22:15:43 -0700 | [diff] [blame] | 345 | if (peer_ == NULL) { |
| 346 | CHECK(IsExceptionPending()); |
Ian Rogers | 5d4bdc2 | 2011-11-02 22:15:43 -0700 | [diff] [blame] | 347 | return; |
| 348 | } |
| 349 | 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] | 350 | 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] | 351 | CHECK(!IsExceptionPending()) << " " << PrettyTypeOf(GetException()); |
Elliott Hughes | 7a3aeb4 | 2011-09-25 17:39:47 -0700 | [diff] [blame] | 352 | SetVmData(peer_, Thread::Current()); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 353 | |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 354 | SirtRef<String> peer_thread_name(GetThreadName()); |
Brian Carlstrom | 00fae58 | 2011-10-28 01:16:28 -0700 | [diff] [blame] | 355 | if (peer_thread_name.get() == NULL) { |
| 356 | // The Thread constructor should have set the Thread.name to a |
| 357 | // non-null value. However, because we can run without code |
| 358 | // available (in the compiler, in tests), we manually assign the |
| 359 | // fields the constructor should have set. |
| 360 | gThread_daemon->SetBoolean(peer_, thread_is_daemon); |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 361 | gThread_group->SetObject(peer_, thread_group); |
Brian Carlstrom | 00fae58 | 2011-10-28 01:16:28 -0700 | [diff] [blame] | 362 | gThread_name->SetObject(peer_, Decode<Object*>(env, thread_name.get())); |
| 363 | gThread_priority->SetInt(peer_, thread_priority); |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 364 | peer_thread_name.reset(GetThreadName()); |
Brian Carlstrom | 00fae58 | 2011-10-28 01:16:28 -0700 | [diff] [blame] | 365 | } |
| 366 | // thread_name may have been null, so don't trust this to be non-null |
| 367 | if (peer_thread_name.get() != NULL) { |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 368 | SetThreadName(peer_thread_name->ToModifiedUtf8().c_str()); |
Brian Carlstrom | 00fae58 | 2011-10-28 01:16:28 -0700 | [diff] [blame] | 369 | } |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 370 | |
| 371 | // Pre-allocate an OutOfMemoryError for the double-OOME case. |
| 372 | ThrowNewException("Ljava/lang/OutOfMemoryError;", |
| 373 | "OutOfMemoryError thrown while trying to throw OutOfMemoryError; no stack available"); |
| 374 | ScopedLocalRef<jthrowable> exception(env, env->ExceptionOccurred()); |
| 375 | env->ExceptionClear(); |
| 376 | pre_allocated_OutOfMemoryError_ = Decode<Throwable*>(env, exception.get()); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 377 | } |
| 378 | |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 379 | void Thread::SetThreadName(const char* name) { |
| 380 | name_->assign(name); |
| 381 | ::art::SetThreadName(name); |
| 382 | Dbg::DdmSendThreadNotification(this, CHUNK_TYPE("THNM")); |
| 383 | } |
| 384 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 385 | void Thread::InitStackHwm() { |
Elliott Hughes | e188419 | 2012-04-23 12:38:15 -0700 | [diff] [blame] | 386 | void* stack_base; |
| 387 | size_t stack_size; |
| 388 | GetThreadStack(stack_base, stack_size); |
Elliott Hughes | 36ecb78 | 2012-04-17 16:55:45 -0700 | [diff] [blame] | 389 | |
| 390 | // TODO: include this in the thread dumps; potentially useful in SIGQUIT output? |
Elliott Hughes | e188419 | 2012-04-23 12:38:15 -0700 | [diff] [blame] | 391 | VLOG(threads) << StringPrintf("Native stack is at %p (%s)", stack_base, PrettySize(stack_size).c_str()); |
| 392 | |
| 393 | stack_begin_ = reinterpret_cast<byte*>(stack_base); |
| 394 | stack_size_ = stack_size; |
Elliott Hughes | 36ecb78 | 2012-04-17 16:55:45 -0700 | [diff] [blame] | 395 | |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 396 | if (stack_size_ <= kStackOverflowReservedBytes) { |
Elliott Hughes | 3d30d9b | 2011-12-07 17:35:48 -0800 | [diff] [blame] | 397 | 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] | 398 | } |
Elliott Hughes | 449b4bd | 2011-09-09 12:01:38 -0700 | [diff] [blame] | 399 | |
Elliott Hughes | e188419 | 2012-04-23 12:38:15 -0700 | [diff] [blame] | 400 | // TODO: move this into the Linux GetThreadStack implementation. |
| 401 | #if !defined(__APPLE__) |
Elliott Hughes | 36ecb78 | 2012-04-17 16:55:45 -0700 | [diff] [blame] | 402 | // If we're the main thread, check whether we were run with an unlimited stack. In that case, |
| 403 | // glibc will have reported a 2GB stack for our 32-bit process, and our stack overflow detection |
| 404 | // will be broken because we'll die long before we get close to 2GB. |
| 405 | if (thin_lock_id_ == 1) { |
| 406 | rlimit stack_limit; |
| 407 | if (getrlimit(RLIMIT_STACK, &stack_limit) == -1) { |
| 408 | PLOG(FATAL) << "getrlimit(RLIMIT_STACK) failed"; |
| 409 | } |
| 410 | if (stack_limit.rlim_cur == RLIM_INFINITY) { |
| 411 | // Find the default stack size for new threads... |
| 412 | pthread_attr_t default_attributes; |
| 413 | size_t default_stack_size; |
| 414 | CHECK_PTHREAD_CALL(pthread_attr_init, (&default_attributes), "default stack size query"); |
| 415 | CHECK_PTHREAD_CALL(pthread_attr_getstacksize, (&default_attributes, &default_stack_size), |
| 416 | "default stack size query"); |
| 417 | CHECK_PTHREAD_CALL(pthread_attr_destroy, (&default_attributes), "default stack size query"); |
| 418 | |
| 419 | // ...and use that as our limit. |
| 420 | size_t old_stack_size = stack_size_; |
| 421 | stack_size_ = default_stack_size; |
| 422 | stack_begin_ += (old_stack_size - stack_size_); |
Elliott Hughes | faf4ba0 | 2012-05-02 16:12:19 -0700 | [diff] [blame] | 423 | VLOG(threads) << "Limiting unlimited stack (reported as " << PrettySize(old_stack_size) << ")" |
| 424 | << " to " << PrettySize(stack_size_) |
| 425 | << " with base " << reinterpret_cast<void*>(stack_begin_); |
Elliott Hughes | 36ecb78 | 2012-04-17 16:55:45 -0700 | [diff] [blame] | 426 | } |
| 427 | } |
Elliott Hughes | e188419 | 2012-04-23 12:38:15 -0700 | [diff] [blame] | 428 | #endif |
Elliott Hughes | 36ecb78 | 2012-04-17 16:55:45 -0700 | [diff] [blame] | 429 | |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 430 | // Set stack_end_ to the bottom of the stack saving space of stack overflows |
| 431 | ResetDefaultStackEnd(); |
Elliott Hughes | 449b4bd | 2011-09-09 12:01:38 -0700 | [diff] [blame] | 432 | |
| 433 | // Sanity check. |
| 434 | int stack_variable; |
Elliott Hughes | 398f64b | 2012-03-26 18:05:48 -0700 | [diff] [blame] | 435 | CHECK_GT(&stack_variable, reinterpret_cast<void*>(stack_end_)); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 436 | } |
| 437 | |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 438 | void Thread::Dump(std::ostream& os, bool full) const { |
| 439 | if (full) { |
| 440 | DumpState(os); |
| 441 | DumpStack(os); |
| 442 | } else { |
| 443 | os << "Thread["; |
| 444 | if (GetThinLockId() != 0) { |
| 445 | // If we're in kStarting, we won't have a thin lock id or tid yet. |
| 446 | os << GetThinLockId() |
| 447 | << ",tid=" << GetTid() << ','; |
| 448 | } |
| 449 | os << GetState() |
| 450 | << ",Thread*=" << this |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 451 | << ",peer=" << peer_ |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 452 | << ",\"" << *name_ << "\"" |
| 453 | << "]"; |
Elliott Hughes | e091855 | 2011-10-28 17:18:29 -0700 | [diff] [blame] | 454 | } |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 455 | } |
| 456 | |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 457 | String* Thread::GetThreadName() const { |
Elliott Hughes | fc86162 | 2011-10-17 17:57:47 -0700 | [diff] [blame] | 458 | return (peer_ != NULL) ? reinterpret_cast<String*>(gThread_name->GetObject(peer_)) : NULL; |
| 459 | } |
| 460 | |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 461 | void Thread::GetThreadName(std::string& name) const { |
| 462 | name.assign(*name_); |
| 463 | } |
| 464 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 465 | void Thread::DumpState(std::ostream& os) const { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 466 | std::string group_name; |
| 467 | int priority; |
| 468 | bool is_daemon = false; |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 469 | |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 470 | if (peer_ != NULL) { |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 471 | priority = gThread_priority->GetInt(peer_); |
| 472 | is_daemon = gThread_daemon->GetBoolean(peer_); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 473 | |
Elliott Hughes | a215526 | 2011-11-16 16:26:58 -0800 | [diff] [blame] | 474 | Object* thread_group = GetThreadGroup(); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 475 | if (thread_group != NULL) { |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 476 | String* group_name_string = reinterpret_cast<String*>(gThreadGroup_name->GetObject(thread_group)); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 477 | group_name = (group_name_string != NULL) ? group_name_string->ToModifiedUtf8() : "<null>"; |
| 478 | } |
| 479 | } else { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 480 | priority = GetNativePriority(); |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 481 | } |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 482 | |
| 483 | int policy; |
| 484 | sched_param sp; |
Elliott Hughes | 3147a23 | 2011-10-12 15:55:07 -0700 | [diff] [blame] | 485 | CHECK_PTHREAD_CALL(pthread_getschedparam, (pthread_self(), &policy, &sp), __FUNCTION__); |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 486 | |
Elliott Hughes | 1bac54f | 2012-03-16 12:48:31 -0700 | [diff] [blame] | 487 | std::string scheduler_group_name(GetSchedulerGroupName(GetTid())); |
| 488 | if (scheduler_group_name.empty()) { |
| 489 | scheduler_group_name = "default"; |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 490 | } |
| 491 | |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 492 | os << '"' << *name_ << '"'; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 493 | if (is_daemon) { |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 494 | os << " daemon"; |
| 495 | } |
| 496 | os << " prio=" << priority |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 497 | << " tid=" << GetThinLockId() |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 498 | << " " << GetState() << "\n"; |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 499 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 500 | os << " | group=\"" << group_name << "\"" |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 501 | << " sCount=" << suspend_count_ |
Elliott Hughes | 234ab15 | 2011-10-26 14:02:26 -0700 | [diff] [blame] | 502 | << " dsCount=" << debug_suspend_count_ |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 503 | << " obj=" << reinterpret_cast<void*>(peer_) |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 504 | << " self=" << reinterpret_cast<const void*>(this) << "\n"; |
| 505 | os << " | sysTid=" << GetTid() |
| 506 | << " nice=" << getpriority(PRIO_PROCESS, GetTid()) |
| 507 | << " sched=" << policy << "/" << sp.sched_priority |
Elliott Hughes | 1bac54f | 2012-03-16 12:48:31 -0700 | [diff] [blame] | 508 | << " cgrp=" << scheduler_group_name |
Elliott Hughes | 3147a23 | 2011-10-12 15:55:07 -0700 | [diff] [blame] | 509 | << " handle=" << pthread_self() << "\n"; |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 510 | |
| 511 | // Grab the scheduler stats for this thread. |
| 512 | std::string scheduler_stats; |
Elliott Hughes | 8a31b50 | 2012-04-30 19:36:11 -0700 | [diff] [blame] | 513 | if (ReadFileToString(StringPrintf("/proc/self/task/%d/schedstat", GetTid()), &scheduler_stats)) { |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 514 | scheduler_stats.resize(scheduler_stats.size() - 1); // Lose the trailing '\n'. |
| 515 | } else { |
| 516 | scheduler_stats = "0 0 0"; |
| 517 | } |
| 518 | |
| 519 | int utime = 0; |
| 520 | int stime = 0; |
| 521 | int task_cpu = 0; |
Elliott Hughes | bfe487b | 2011-10-26 15:48:55 -0700 | [diff] [blame] | 522 | GetTaskStats(GetTid(), utime, stime, task_cpu); |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 523 | |
| 524 | os << " | schedstat=( " << scheduler_stats << " )" |
| 525 | << " utm=" << utime |
| 526 | << " stm=" << stime |
| 527 | << " core=" << task_cpu |
| 528 | << " HZ=" << sysconf(_SC_CLK_TCK) << "\n"; |
Elliott Hughes | 5b17d08 | 2012-04-23 16:57:28 -0700 | [diff] [blame] | 529 | |
| 530 | os << " | stackSize=" << PrettySize(stack_size_) |
| 531 | << " stack=" << reinterpret_cast<void*>(stack_begin_) << "-" << reinterpret_cast<void*>(stack_end_) << "\n"; |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 532 | } |
| 533 | |
TDYa127 | ee0d3fb | 2012-04-01 14:55:33 -0700 | [diff] [blame] | 534 | #if !defined(ART_USE_LLVM_COMPILER) |
Ian Rogers | b04f69f | 2011-10-17 00:40:54 -0700 | [diff] [blame] | 535 | void Thread::PushNativeToManagedRecord(NativeToManagedRecord* record) { |
| 536 | Method **sp = top_of_managed_stack_.GetSP(); |
| 537 | #ifndef NDEBUG |
| 538 | if (sp != NULL) { |
| 539 | Method* m = *sp; |
Elliott Hughes | b3bd5f0 | 2012-03-08 21:05:27 -0800 | [diff] [blame] | 540 | Runtime::Current()->GetHeap()->VerifyObject(m); |
Ian Rogers | b04f69f | 2011-10-17 00:40:54 -0700 | [diff] [blame] | 541 | DCHECK((m == NULL) || m->IsMethod()); |
| 542 | } |
| 543 | #endif |
| 544 | record->last_top_of_managed_stack_ = reinterpret_cast<void*>(sp); |
| 545 | record->last_top_of_managed_stack_pc_ = top_of_managed_stack_pc_; |
| 546 | record->link_ = native_to_managed_record_; |
| 547 | native_to_managed_record_ = record; |
| 548 | top_of_managed_stack_.SetSP(NULL); |
| 549 | } |
TDYa127 | ee0d3fb | 2012-04-01 14:55:33 -0700 | [diff] [blame] | 550 | #else |
| 551 | void Thread::PushNativeToManagedRecord(NativeToManagedRecord*) { |
| 552 | LOG(FATAL) << "Called non-LLVM method with LLVM"; |
| 553 | } |
| 554 | #endif |
Ian Rogers | b04f69f | 2011-10-17 00:40:54 -0700 | [diff] [blame] | 555 | |
TDYa127 | ee0d3fb | 2012-04-01 14:55:33 -0700 | [diff] [blame] | 556 | #if !defined(ART_USE_LLVM_COMPILER) |
Ian Rogers | b04f69f | 2011-10-17 00:40:54 -0700 | [diff] [blame] | 557 | void Thread::PopNativeToManagedRecord(const NativeToManagedRecord& record) { |
| 558 | native_to_managed_record_ = record.link_; |
| 559 | top_of_managed_stack_.SetSP(reinterpret_cast<Method**>(record.last_top_of_managed_stack_)); |
| 560 | top_of_managed_stack_pc_ = record.last_top_of_managed_stack_pc_; |
| 561 | } |
TDYa127 | ee0d3fb | 2012-04-01 14:55:33 -0700 | [diff] [blame] | 562 | #else |
| 563 | void Thread::PopNativeToManagedRecord(const NativeToManagedRecord&) { |
| 564 | LOG(FATAL) << "Called non-LLVM method with LLVM"; |
| 565 | } |
| 566 | #endif |
Ian Rogers | b04f69f | 2011-10-17 00:40:54 -0700 | [diff] [blame] | 567 | |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 568 | struct StackDumpVisitor : public Thread::StackVisitor { |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 569 | StackDumpVisitor(std::ostream& os, const Thread* thread) |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 570 | : last_method(NULL), last_line_number(0), repetition_count(0), os(os), thread(thread), |
| 571 | frame_count(0) { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 572 | } |
| 573 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 574 | virtual ~StackDumpVisitor() { |
Elliott Hughes | e85d2e9 | 2012-05-01 14:02:10 -0700 | [diff] [blame] | 575 | if (frame_count == 0) { |
| 576 | os << " (no managed stack frames)\n"; |
| 577 | } |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 578 | } |
| 579 | |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 580 | bool VisitFrame(const Frame& frame, uintptr_t pc) { |
Ian Rogers | 9086572 | 2011-09-19 11:11:44 -0700 | [diff] [blame] | 581 | if (!frame.HasMethod()) { |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 582 | return true; |
Ian Rogers | 9086572 | 2011-09-19 11:11:44 -0700 | [diff] [blame] | 583 | } |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 584 | const int kMaxRepetition = 3; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 585 | Method* m = frame.GetMethod(); |
| 586 | Class* c = m->GetDeclaringClass(); |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 587 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Ian Rogers | b861dc0 | 2011-11-14 17:00:05 -0800 | [diff] [blame] | 588 | const DexCache* dex_cache = c->GetDexCache(); |
| 589 | int line_number = -1; |
| 590 | if (dex_cache != NULL) { // be tolerant of bad input |
| 591 | const DexFile& dex_file = class_linker->FindDexFile(dex_cache); |
| 592 | line_number = dex_file.GetLineNumFromPC(m, m->ToDexPC(pc)); |
| 593 | } |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 594 | if (line_number == last_line_number && last_method == m) { |
| 595 | repetition_count++; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 596 | } else { |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 597 | if (repetition_count >= kMaxRepetition) { |
| 598 | os << " ... repeated " << (repetition_count - kMaxRepetition) << " times\n"; |
| 599 | } |
| 600 | repetition_count = 0; |
| 601 | last_line_number = line_number; |
| 602 | last_method = m; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 603 | } |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 604 | if (repetition_count < kMaxRepetition) { |
| 605 | os << " at " << PrettyMethod(m, false); |
| 606 | if (m->IsNative()) { |
| 607 | os << "(Native method)"; |
| 608 | } else { |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 609 | mh.ChangeMethod(m); |
| 610 | const char* source_file(mh.GetDeclaringClassSourceFile()); |
| 611 | os << "(" << (source_file != NULL ? source_file : "unavailable") |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 612 | << ":" << line_number << ")"; |
| 613 | } |
| 614 | os << "\n"; |
| 615 | } |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 616 | |
| 617 | if (frame_count++ == 0) { |
| 618 | Monitor::DescribeWait(os, thread); |
| 619 | } |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 620 | return true; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 621 | } |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 622 | MethodHelper mh; |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 623 | Method* last_method; |
| 624 | int last_line_number; |
| 625 | int repetition_count; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 626 | std::ostream& os; |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 627 | const Thread* thread; |
| 628 | int frame_count; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 629 | }; |
| 630 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 631 | void Thread::DumpStack(std::ostream& os) const { |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 632 | // If we're currently in native code, dump that stack before dumping the managed stack. |
Elliott Hughes | 34e0696 | 2012-04-09 13:55:55 -0700 | [diff] [blame] | 633 | if (GetState() == kNative || GetState() == kVmWait) { |
Elliott Hughes | e85d2e9 | 2012-05-01 14:02:10 -0700 | [diff] [blame] | 634 | DumpKernelStack(os); |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 635 | DumpNativeStack(os); |
| 636 | } |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 637 | StackDumpVisitor dumper(os, this); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 638 | WalkStack(&dumper); |
Elliott Hughes | e27955c | 2011-08-26 15:21:24 -0700 | [diff] [blame] | 639 | } |
| 640 | |
Elliott Hughes | e85d2e9 | 2012-05-01 14:02:10 -0700 | [diff] [blame] | 641 | #if !defined(__APPLE__) |
Elliott Hughes | beb3240 | 2012-05-01 22:09:16 -0700 | [diff] [blame] | 642 | void Thread::DumpKernelStack(std::ostream& os) const { |
Elliott Hughes | e85d2e9 | 2012-05-01 14:02:10 -0700 | [diff] [blame] | 643 | std::string kernel_stack_filename(StringPrintf("/proc/self/task/%d/stack", GetTid())); |
| 644 | std::string kernel_stack; |
| 645 | if (!ReadFileToString(kernel_stack_filename, &kernel_stack)) { |
| 646 | os << " (couldn't read " << kernel_stack_filename << ")"; |
| 647 | } |
| 648 | |
| 649 | std::vector<std::string> kernel_stack_frames; |
| 650 | Split(kernel_stack, '\n', kernel_stack_frames); |
| 651 | // We skip the last stack frame because it's always equivalent to "[<ffffffff>] 0xffffffff", |
| 652 | // which looking at the source appears to be the kernel's way of saying "that's all, folks!". |
| 653 | kernel_stack_frames.pop_back(); |
| 654 | for (size_t i = 0; i < kernel_stack_frames.size(); ++i) { |
| 655 | os << " kernel: " << kernel_stack_frames[i] << "\n"; |
| 656 | } |
Elliott Hughes | e85d2e9 | 2012-05-01 14:02:10 -0700 | [diff] [blame] | 657 | } |
Elliott Hughes | beb3240 | 2012-05-01 22:09:16 -0700 | [diff] [blame] | 658 | #else |
| 659 | // TODO: can we get the kernel stack on Mac OS? |
| 660 | void Thread::DumpKernelStack(std::ostream&) const {} |
| 661 | #endif |
Elliott Hughes | e85d2e9 | 2012-05-01 14:02:10 -0700 | [diff] [blame] | 662 | |
Elliott Hughes | 34e0696 | 2012-04-09 13:55:55 -0700 | [diff] [blame] | 663 | void Thread::SetStateWithoutSuspendCheck(ThreadState new_state) { |
Elliott Hughes | a4060e5 | 2012-03-02 16:51:35 -0800 | [diff] [blame] | 664 | volatile void* raw = reinterpret_cast<volatile void*>(&state_); |
| 665 | volatile int32_t* addr = reinterpret_cast<volatile int32_t*>(raw); |
| 666 | android_atomic_release_store(new_state, addr); |
| 667 | } |
| 668 | |
Elliott Hughes | 34e0696 | 2012-04-09 13:55:55 -0700 | [diff] [blame] | 669 | ThreadState Thread::SetState(ThreadState new_state) { |
| 670 | ThreadState old_state = state_; |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 671 | if (old_state == new_state) { |
| 672 | return old_state; |
| 673 | } |
| 674 | |
| 675 | volatile void* raw = reinterpret_cast<volatile void*>(&state_); |
| 676 | volatile int32_t* addr = reinterpret_cast<volatile int32_t*>(raw); |
| 677 | |
Elliott Hughes | 34e0696 | 2012-04-09 13:55:55 -0700 | [diff] [blame] | 678 | if (new_state == kRunnable) { |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 679 | /* |
Elliott Hughes | 34e0696 | 2012-04-09 13:55:55 -0700 | [diff] [blame] | 680 | * Change our status to kRunnable. The transition requires |
Elliott Hughes | 81ff318 | 2012-03-23 20:35:56 -0700 | [diff] [blame] | 681 | * that we check for pending suspension, because the runtime considers |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 682 | * us to be "asleep" in all other states, and another thread could |
| 683 | * be performing a GC now. |
| 684 | * |
| 685 | * The order of operations is very significant here. One way to |
| 686 | * do this wrong is: |
| 687 | * |
| 688 | * GCing thread Our thread (in kNative) |
| 689 | * ------------ ---------------------- |
| 690 | * check suspend count (== 0) |
| 691 | * SuspendAllThreads() |
| 692 | * grab suspend-count lock |
| 693 | * increment all suspend counts |
| 694 | * release suspend-count lock |
| 695 | * check thread state (== kNative) |
| 696 | * all are suspended, begin GC |
| 697 | * set state to kRunnable |
| 698 | * (continue executing) |
| 699 | * |
| 700 | * We can correct this by grabbing the suspend-count lock and |
| 701 | * performing both of our operations (check suspend count, set |
| 702 | * state) while holding it, now we need to grab a mutex on every |
| 703 | * transition to kRunnable. |
| 704 | * |
| 705 | * What we do instead is change the order of operations so that |
| 706 | * the transition to kRunnable happens first. If we then detect |
| 707 | * that the suspend count is nonzero, we switch to kSuspended. |
| 708 | * |
| 709 | * Appropriate compiler and memory barriers are required to ensure |
| 710 | * that the operations are observed in the expected order. |
| 711 | * |
| 712 | * This does create a small window of opportunity where a GC in |
| 713 | * progress could observe what appears to be a running thread (if |
| 714 | * it happens to look between when we set to kRunnable and when we |
| 715 | * switch to kSuspended). At worst this only affects assertions |
| 716 | * and thread logging. (We could work around it with some sort |
| 717 | * of intermediate "pre-running" state that is generally treated |
| 718 | * as equivalent to running, but that doesn't seem worthwhile.) |
| 719 | * |
| 720 | * We can also solve this by combining the "status" and "suspend |
| 721 | * count" fields into a single 32-bit value. This trades the |
| 722 | * store/load barrier on transition to kRunnable for an atomic RMW |
| 723 | * op on all transitions and all suspend count updates (also, all |
| 724 | * accesses to status or the thread count require bit-fiddling). |
| 725 | * It also eliminates the brief transition through kRunnable when |
| 726 | * the thread is supposed to be suspended. This is possibly faster |
| 727 | * on SMP and slightly more correct, but less convenient. |
| 728 | */ |
| 729 | android_atomic_acquire_store(new_state, addr); |
Elliott Hughes | 06e3ad4 | 2012-02-07 14:51:57 -0800 | [diff] [blame] | 730 | ANNOTATE_IGNORE_READS_BEGIN(); |
| 731 | int suspend_count = suspend_count_; |
| 732 | ANNOTATE_IGNORE_READS_END(); |
| 733 | if (suspend_count != 0) { |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 734 | Runtime::Current()->GetThreadList()->FullSuspendCheck(this); |
| 735 | } |
| 736 | } else { |
| 737 | /* |
Elliott Hughes | 34e0696 | 2012-04-09 13:55:55 -0700 | [diff] [blame] | 738 | * Not changing to kRunnable. No additional work required. |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 739 | * |
| 740 | * We use a releasing store to ensure that, if we were runnable, |
| 741 | * any updates we previously made to objects on the managed heap |
| 742 | * will be observed before the state change. |
| 743 | */ |
| 744 | android_atomic_release_store(new_state, addr); |
| 745 | } |
| 746 | |
| 747 | return old_state; |
| 748 | } |
| 749 | |
Elliott Hughes | 761928d | 2011-11-16 18:33:03 -0800 | [diff] [blame] | 750 | bool Thread::IsSuspended() { |
Elliott Hughes | 06e3ad4 | 2012-02-07 14:51:57 -0800 | [diff] [blame] | 751 | ANNOTATE_IGNORE_READS_BEGIN(); |
| 752 | int suspend_count = suspend_count_; |
| 753 | ANNOTATE_IGNORE_READS_END(); |
Elliott Hughes | 34e0696 | 2012-04-09 13:55:55 -0700 | [diff] [blame] | 754 | return suspend_count != 0 && GetState() != kRunnable; |
Elliott Hughes | 761928d | 2011-11-16 18:33:03 -0800 | [diff] [blame] | 755 | } |
| 756 | |
Elliott Hughes | ff73806 | 2012-02-03 15:00:42 -0800 | [diff] [blame] | 757 | static void ReportThreadSuspendTimeout(Thread* waiting_thread) { |
| 758 | Runtime* runtime = Runtime::Current(); |
| 759 | std::ostringstream ss; |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 760 | ss << "Thread suspend timeout waiting for thread " << *waiting_thread << "\n"; |
Elliott Hughes | ff73806 | 2012-02-03 15:00:42 -0800 | [diff] [blame] | 761 | runtime->DumpLockHolders(ss); |
| 762 | ss << "\n"; |
| 763 | runtime->GetThreadList()->DumpLocked(ss); |
| 764 | LOG(FATAL) << ss.str(); |
| 765 | } |
| 766 | |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 767 | void Thread::WaitUntilSuspended() { |
Elliott Hughes | 21a5bf2 | 2011-12-07 14:35:20 -0800 | [diff] [blame] | 768 | static const useconds_t kTimeoutUs = 30 * 1000000; // 30s. |
| 769 | |
| 770 | useconds_t total_delay = 0; |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 771 | useconds_t delay = 0; |
Elliott Hughes | 34e0696 | 2012-04-09 13:55:55 -0700 | [diff] [blame] | 772 | while (GetState() == kRunnable) { |
Elliott Hughes | 21a5bf2 | 2011-12-07 14:35:20 -0800 | [diff] [blame] | 773 | if (total_delay >= kTimeoutUs) { |
Elliott Hughes | ff73806 | 2012-02-03 15:00:42 -0800 | [diff] [blame] | 774 | ReportThreadSuspendTimeout(this); |
Elliott Hughes | 21a5bf2 | 2011-12-07 14:35:20 -0800 | [diff] [blame] | 775 | } |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 776 | useconds_t new_delay = delay * 2; |
| 777 | CHECK_GE(new_delay, delay); |
| 778 | delay = new_delay; |
| 779 | if (delay == 0) { |
| 780 | sched_yield(); |
| 781 | delay = 10000; |
| 782 | } else { |
| 783 | usleep(delay); |
Elliott Hughes | 21a5bf2 | 2011-12-07 14:35:20 -0800 | [diff] [blame] | 784 | total_delay += delay; |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 785 | } |
| 786 | } |
| 787 | } |
| 788 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 789 | void Thread::ThreadExitCallback(void* arg) { |
| 790 | Thread* self = reinterpret_cast<Thread*>(arg); |
| 791 | LOG(FATAL) << "Native thread exited without calling DetachCurrentThread: " << *self; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 792 | } |
| 793 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 794 | void Thread::Startup() { |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 795 | // Allocate a TLS slot. |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 796 | 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] | 797 | |
| 798 | // Double-check the TLS slot allocation. |
| 799 | if (pthread_getspecific(pthread_key_self_) != NULL) { |
Elliott Hughes | 3d30d9b | 2011-12-07 17:35:48 -0800 | [diff] [blame] | 800 | LOG(FATAL) << "Newly-created pthread TLS slot is not NULL"; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 801 | } |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 802 | } |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 803 | |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 804 | // TODO: make more accessible? |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 805 | static Class* FindClassOrDie(ClassLinker* class_linker, const char* descriptor) { |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 806 | Class* c = class_linker->FindSystemClass(descriptor); |
| 807 | CHECK(c != NULL) << descriptor; |
| 808 | return c; |
| 809 | } |
| 810 | |
| 811 | // TODO: make more accessible? |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 812 | static Field* FindFieldOrDie(Class* c, const char* name, const char* descriptor) { |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 813 | Field* f = c->FindDeclaredInstanceField(name, descriptor); |
| 814 | CHECK(f != NULL) << PrettyClass(c) << " " << name << " " << descriptor; |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 815 | return f; |
| 816 | } |
| 817 | |
| 818 | // TODO: make more accessible? |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 819 | static Method* FindMethodOrDie(Class* c, const char* name, const char* signature) { |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 820 | Method* m = c->FindVirtualMethod(name, signature); |
| 821 | CHECK(m != NULL) << PrettyClass(c) << " " << name << " " << signature; |
| 822 | return m; |
| 823 | } |
| 824 | |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 825 | // TODO: make more accessible? |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 826 | static Field* FindStaticFieldOrDie(Class* c, const char* name, const char* descriptor) { |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 827 | Field* f = c->FindDeclaredStaticField(name, descriptor); |
| 828 | CHECK(f != NULL) << PrettyClass(c) << " " << name << " " << descriptor; |
| 829 | return f; |
| 830 | } |
| 831 | |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 832 | void Thread::FinishStartup() { |
Jesse Wilson | 9a6bae8 | 2011-11-14 14:57:30 -0500 | [diff] [blame] | 833 | CHECK(Runtime::Current()->IsStarted()); |
Brian Carlstrom | b82b687 | 2011-10-26 17:18:07 -0700 | [diff] [blame] | 834 | Thread* self = Thread::Current(); |
| 835 | |
| 836 | // Need to be kRunnable for FindClass |
Elliott Hughes | 34e0696 | 2012-04-09 13:55:55 -0700 | [diff] [blame] | 837 | ScopedThreadStateChange tsc(self, kRunnable); |
Brian Carlstrom | b82b687 | 2011-10-26 17:18:07 -0700 | [diff] [blame] | 838 | |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 839 | // Now the ClassLinker is ready, we can find the various Class*, Field*, and Method*s we need. |
| 840 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 841 | |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 842 | Class* Thread_class = FindClassOrDie(class_linker, "Ljava/lang/Thread;"); |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 843 | Class* UncaughtExceptionHandler_class = FindClassOrDie(class_linker, "Ljava/lang/Thread$UncaughtExceptionHandler;"); |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 844 | gThreadGroup = FindClassOrDie(class_linker, "Ljava/lang/ThreadGroup;"); |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 845 | gThreadLock = FindClassOrDie(class_linker, "Ljava/lang/ThreadLock;"); |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 846 | |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 847 | gThread_daemon = FindFieldOrDie(Thread_class, "daemon", "Z"); |
| 848 | gThread_group = FindFieldOrDie(Thread_class, "group", "Ljava/lang/ThreadGroup;"); |
| 849 | gThread_lock = FindFieldOrDie(Thread_class, "lock", "Ljava/lang/ThreadLock;"); |
| 850 | gThread_name = FindFieldOrDie(Thread_class, "name", "Ljava/lang/String;"); |
| 851 | gThread_priority = FindFieldOrDie(Thread_class, "priority", "I"); |
| 852 | gThread_uncaughtHandler = FindFieldOrDie(Thread_class, "uncaughtHandler", "Ljava/lang/Thread$UncaughtExceptionHandler;"); |
| 853 | gThread_vmData = FindFieldOrDie(Thread_class, "vmData", "I"); |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 854 | gThreadGroup_name = FindFieldOrDie(gThreadGroup, "name", "Ljava/lang/String;"); |
| 855 | gThreadGroup_mMain = FindStaticFieldOrDie(gThreadGroup, "mMain", "Ljava/lang/ThreadGroup;"); |
| 856 | gThreadGroup_mSystem = FindStaticFieldOrDie(gThreadGroup, "mSystem", "Ljava/lang/ThreadGroup;"); |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 857 | gThreadLock_thread = FindFieldOrDie(gThreadLock, "thread", "Ljava/lang/Thread;"); |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 858 | |
| 859 | gThread_run = FindMethodOrDie(Thread_class, "run", "()V"); |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 860 | gThreadGroup_removeThread = FindMethodOrDie(gThreadGroup, "removeThread", "(Ljava/lang/Thread;)V"); |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 861 | gUncaughtExceptionHandler_uncaughtException = FindMethodOrDie(UncaughtExceptionHandler_class, |
| 862 | "uncaughtException", "(Ljava/lang/Thread;Ljava/lang/Throwable;)V"); |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 863 | |
| 864 | // Finish attaching the main thread. |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 865 | Thread::Current()->CreatePeer("main", false, Thread::GetMainThreadGroup()); |
Jesse Wilson | 9a6bae8 | 2011-11-14 14:57:30 -0500 | [diff] [blame] | 866 | |
| 867 | InitBoxingMethods(); |
| 868 | class_linker->RunRootClinits(); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 869 | } |
| 870 | |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 871 | void Thread::Shutdown() { |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 872 | CHECK_PTHREAD_CALL(pthread_key_delete, (Thread::pthread_key_self_), "self key"); |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 873 | } |
| 874 | |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 875 | uint32_t Thread::LockOwnerFromThreadLock(Object* thread_lock) { |
| 876 | if (thread_lock == NULL || thread_lock->GetClass() != gThreadLock) { |
| 877 | return ThreadList::kInvalidId; |
| 878 | } |
| 879 | Object* managed_thread = gThreadLock_thread->GetObject(thread_lock); |
| 880 | if (managed_thread == NULL) { |
| 881 | return ThreadList::kInvalidId; |
| 882 | } |
| 883 | uintptr_t vmData = static_cast<uintptr_t>(gThread_vmData->GetInt(managed_thread)); |
| 884 | Thread* thread = reinterpret_cast<Thread*>(vmData); |
| 885 | if (thread == NULL) { |
| 886 | return ThreadList::kInvalidId; |
| 887 | } |
| 888 | return thread->GetThinLockId(); |
| 889 | } |
| 890 | |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 891 | Thread::Thread() |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 892 | : thin_lock_id_(0), |
| 893 | tid_(0), |
| 894 | peer_(NULL), |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 895 | top_of_managed_stack_(), |
| 896 | top_of_managed_stack_pc_(0), |
Elliott Hughes | e62934d | 2012-04-09 11:24:29 -0700 | [diff] [blame] | 897 | wait_mutex_(new Mutex("a thread wait mutex")), |
| 898 | wait_cond_(new ConditionVariable("a thread wait condition variable")), |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 899 | wait_monitor_(NULL), |
| 900 | interrupted_(false), |
Elliott Hughes | dc33ad5 | 2011-09-16 19:46:51 -0700 | [diff] [blame] | 901 | wait_next_(NULL), |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 902 | monitor_enter_object_(NULL), |
Elliott Hughes | dc33ad5 | 2011-09-16 19:46:51 -0700 | [diff] [blame] | 903 | card_table_(0), |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 904 | stack_end_(NULL), |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 905 | native_to_managed_record_(NULL), |
| 906 | top_sirt_(NULL), |
Logan Chien | f7ad17e | 2012-03-15 03:10:03 +0800 | [diff] [blame] | 907 | top_shadow_frame_(NULL), |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 908 | jni_env_(NULL), |
Elliott Hughes | 34e0696 | 2012-04-09 13:55:55 -0700 | [diff] [blame] | 909 | state_(kNative), |
Elliott Hughes | dc33ad5 | 2011-09-16 19:46:51 -0700 | [diff] [blame] | 910 | self_(NULL), |
| 911 | runtime_(NULL), |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 912 | exception_(NULL), |
| 913 | suspend_count_(0), |
Elliott Hughes | 234ab15 | 2011-10-26 14:02:26 -0700 | [diff] [blame] | 914 | debug_suspend_count_(0), |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 915 | class_loader_override_(NULL), |
Elliott Hughes | 418dfe7 | 2011-10-06 18:56:27 -0700 | [diff] [blame] | 916 | long_jump_context_(NULL), |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 917 | throwing_OutOfMemoryError_(false), |
Elliott Hughes | 475fc23 | 2011-10-25 15:00:35 -0700 | [diff] [blame] | 918 | pre_allocated_OutOfMemoryError_(NULL), |
jeffhao | e343b76 | 2011-12-05 16:36:44 -0800 | [diff] [blame] | 919 | debug_invoke_req_(new DebugInvokeReq), |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 920 | trace_stack_(new std::vector<TraceStackFrame>), |
Elliott Hughes | 7dc5166 | 2012-05-16 14:48:43 -0700 | [diff] [blame] | 921 | name_(new std::string(kThreadNameDuringStartup)) { |
Elliott Hughes | f5a7a47 | 2011-10-07 14:31:02 -0700 | [diff] [blame] | 922 | CHECK_EQ((sizeof(Thread) % 4), 0U) << sizeof(Thread); |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 923 | memset(&held_mutexes_[0], 0, sizeof(held_mutexes_)); |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 924 | } |
| 925 | |
Elliott Hughes | 7dc5166 | 2012-05-16 14:48:43 -0700 | [diff] [blame] | 926 | bool Thread::IsStillStarting() const { |
| 927 | // You might think you can check whether the state is kStarting, but for much of thread startup, |
| 928 | // the thread might also be in kVmWait. |
| 929 | // You might think you can check whether the peer is NULL, but the peer is actually created and |
| 930 | // assigned fairly early on, and needs to be. |
| 931 | // It turns out that the last thing to change is the thread name; that's a good proxy for "has |
| 932 | // this thread _ever_ entered kRunnable". |
| 933 | return (*name_ == kThreadNameDuringStartup); |
| 934 | } |
| 935 | |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 936 | static void MonitorExitVisitor(const Object* object, void*) { |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 937 | Object* entered_monitor = const_cast<Object*>(object); |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 938 | LOG(WARNING) << "Calling MonitorExit on object " << object << " (" << PrettyTypeOf(object) << ")" |
| 939 | << " left locked by native thread " << *Thread::Current() << " which is detaching"; |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 940 | entered_monitor->MonitorExit(Thread::Current()); |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 941 | } |
| 942 | |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 943 | void Thread::Destroy() { |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 944 | // On thread detach, all monitors entered with JNI MonitorEnter are automatically exited. |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 945 | if (jni_env_ != NULL) { |
| 946 | jni_env_->monitors.VisitRoots(MonitorExitVisitor, NULL); |
| 947 | } |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 948 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 949 | if (peer_ != NULL) { |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 950 | Thread* self = this; |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 951 | |
Elliott Hughes | 534da07 | 2012-03-27 15:17:42 -0700 | [diff] [blame] | 952 | // We may need to call user-supplied managed code. |
Elliott Hughes | 34e0696 | 2012-04-09 13:55:55 -0700 | [diff] [blame] | 953 | SetState(kRunnable); |
Elliott Hughes | 534da07 | 2012-03-27 15:17:42 -0700 | [diff] [blame] | 954 | |
| 955 | HandleUncaughtExceptions(); |
| 956 | RemoveFromThreadGroup(); |
| 957 | |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 958 | // this.vmData = 0; |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 959 | SetVmData(peer_, NULL); |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 960 | |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 961 | Dbg::PostThreadDeath(self); |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 962 | |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 963 | // Thread.join() is implemented as an Object.wait() on the Thread.lock |
| 964 | // object. Signal anyone who is waiting. |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 965 | Object* lock = gThread_lock->GetObject(peer_); |
| 966 | // (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] | 967 | if (lock != NULL) { |
| 968 | lock->MonitorEnter(self); |
| 969 | lock->NotifyAll(); |
| 970 | lock->MonitorExit(self); |
| 971 | } |
| 972 | } |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 973 | } |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 974 | |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 975 | Thread::~Thread() { |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 976 | delete jni_env_; |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 977 | jni_env_ = NULL; |
| 978 | |
Elliott Hughes | 34e0696 | 2012-04-09 13:55:55 -0700 | [diff] [blame] | 979 | SetState(kTerminated); |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 980 | |
| 981 | delete wait_cond_; |
| 982 | delete wait_mutex_; |
| 983 | |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 984 | #if !defined(ART_USE_LLVM_COMPILER) |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 985 | delete long_jump_context_; |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 986 | #endif |
Elliott Hughes | 475fc23 | 2011-10-25 15:00:35 -0700 | [diff] [blame] | 987 | |
| 988 | delete debug_invoke_req_; |
jeffhao | e343b76 | 2011-12-05 16:36:44 -0800 | [diff] [blame] | 989 | delete trace_stack_; |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 990 | delete name_; |
Elliott Hughes | d8af159 | 2012-04-16 20:40:15 -0700 | [diff] [blame] | 991 | |
| 992 | TearDownAlternateSignalStack(); |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 993 | } |
| 994 | |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 995 | void Thread::HandleUncaughtExceptions() { |
| 996 | if (!IsExceptionPending()) { |
| 997 | return; |
| 998 | } |
| 999 | |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1000 | // Get and clear the exception. |
| 1001 | Object* exception = GetException(); |
| 1002 | ClearException(); |
| 1003 | |
| 1004 | // If the thread has its own handler, use that. |
| 1005 | Object* handler = gThread_uncaughtHandler->GetObject(peer_); |
| 1006 | if (handler == NULL) { |
| 1007 | // Otherwise use the thread group's default handler. |
Elliott Hughes | a215526 | 2011-11-16 16:26:58 -0800 | [diff] [blame] | 1008 | handler = GetThreadGroup(); |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1009 | } |
| 1010 | |
| 1011 | // Call the handler. |
| 1012 | Method* m = handler->GetClass()->FindVirtualMethodForVirtualOrInterface(gUncaughtExceptionHandler_uncaughtException); |
Elliott Hughes | 7740579 | 2012-03-15 15:22:12 -0700 | [diff] [blame] | 1013 | JValue args[2]; |
Elliott Hughes | f24d3ce | 2012-04-11 17:43:37 -0700 | [diff] [blame] | 1014 | args[0].SetL(peer_); |
| 1015 | args[1].SetL(exception); |
Elliott Hughes | 7740579 | 2012-03-15 15:22:12 -0700 | [diff] [blame] | 1016 | m->Invoke(this, handler, args, NULL); |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1017 | |
| 1018 | // If the handler threw, clear that exception too. |
| 1019 | ClearException(); |
| 1020 | } |
| 1021 | |
Elliott Hughes | a215526 | 2011-11-16 16:26:58 -0800 | [diff] [blame] | 1022 | Object* Thread::GetThreadGroup() const { |
| 1023 | return gThread_group->GetObject(peer_); |
| 1024 | } |
| 1025 | |
Brian Carlstrom | 4514d3c | 2011-10-21 17:01:31 -0700 | [diff] [blame] | 1026 | void Thread::RemoveFromThreadGroup() { |
| 1027 | // this.group.removeThread(this); |
| 1028 | // 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] | 1029 | Object* group = GetThreadGroup(); |
Brian Carlstrom | 4514d3c | 2011-10-21 17:01:31 -0700 | [diff] [blame] | 1030 | if (group != NULL) { |
| 1031 | Method* m = group->GetClass()->FindVirtualMethodForVirtualOrInterface(gThreadGroup_removeThread); |
Elliott Hughes | 7740579 | 2012-03-15 15:22:12 -0700 | [diff] [blame] | 1032 | JValue args[1]; |
Elliott Hughes | f24d3ce | 2012-04-11 17:43:37 -0700 | [diff] [blame] | 1033 | args[0].SetL(peer_); |
Elliott Hughes | 7740579 | 2012-03-15 15:22:12 -0700 | [diff] [blame] | 1034 | m->Invoke(this, group, args, NULL); |
Brian Carlstrom | 4514d3c | 2011-10-21 17:01:31 -0700 | [diff] [blame] | 1035 | } |
| 1036 | } |
| 1037 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1038 | size_t Thread::NumSirtReferences() { |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 1039 | size_t count = 0; |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1040 | for (StackIndirectReferenceTable* cur = top_sirt_; cur; cur = cur->GetLink()) { |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 1041 | count += cur->NumberOfReferences(); |
| 1042 | } |
| 1043 | return count; |
| 1044 | } |
| 1045 | |
TDYa127 | 28f1a14 | 2012-03-15 21:51:52 -0700 | [diff] [blame] | 1046 | size_t Thread::NumShadowFrameReferences() { |
| 1047 | size_t count = 0; |
| 1048 | for (ShadowFrame* cur = top_shadow_frame_; cur; cur = cur->GetLink()) { |
| 1049 | count += cur->NumberOfReferences(); |
| 1050 | } |
| 1051 | return count; |
| 1052 | } |
| 1053 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1054 | bool Thread::SirtContains(jobject obj) { |
| 1055 | Object** sirt_entry = reinterpret_cast<Object**>(obj); |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1056 | for (StackIndirectReferenceTable* cur = top_sirt_; cur; cur = cur->GetLink()) { |
| 1057 | if (cur->Contains(sirt_entry)) { |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 1058 | return true; |
| 1059 | } |
| 1060 | } |
| 1061 | return false; |
| 1062 | } |
| 1063 | |
TDYa127 | 28f1a14 | 2012-03-15 21:51:52 -0700 | [diff] [blame] | 1064 | bool Thread::ShadowFrameContains(jobject obj) { |
| 1065 | Object** shadow_frame_entry = reinterpret_cast<Object**>(obj); |
| 1066 | for (ShadowFrame* cur = top_shadow_frame_; cur; cur = cur->GetLink()) { |
| 1067 | if (cur->Contains(shadow_frame_entry)) { |
| 1068 | return true; |
| 1069 | } |
| 1070 | } |
| 1071 | return false; |
| 1072 | } |
| 1073 | |
| 1074 | bool Thread::StackReferencesContain(jobject obj) { |
| 1075 | return SirtContains(obj) || ShadowFrameContains(obj); |
| 1076 | } |
| 1077 | |
Shih-wei Liao | 8dfc9d5 | 2011-09-28 18:06:15 -0700 | [diff] [blame] | 1078 | void Thread::SirtVisitRoots(Heap::RootVisitor* visitor, void* arg) { |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1079 | for (StackIndirectReferenceTable* cur = top_sirt_; cur; cur = cur->GetLink()) { |
Shih-wei Liao | 8dfc9d5 | 2011-09-28 18:06:15 -0700 | [diff] [blame] | 1080 | size_t num_refs = cur->NumberOfReferences(); |
| 1081 | for (size_t j = 0; j < num_refs; j++) { |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1082 | Object* object = cur->GetReference(j); |
Brian Carlstrom | 5e73f9c | 2011-10-11 11:28:12 -0700 | [diff] [blame] | 1083 | if (object != NULL) { |
| 1084 | visitor(object, arg); |
| 1085 | } |
Shih-wei Liao | 8dfc9d5 | 2011-09-28 18:06:15 -0700 | [diff] [blame] | 1086 | } |
| 1087 | } |
| 1088 | } |
| 1089 | |
Logan Chien | f7ad17e | 2012-03-15 03:10:03 +0800 | [diff] [blame] | 1090 | void Thread::ShadowFrameVisitRoots(Heap::RootVisitor* visitor, void* arg) { |
| 1091 | for (ShadowFrame* cur = top_shadow_frame_; cur; cur = cur->GetLink()) { |
| 1092 | size_t num_refs = cur->NumberOfReferences(); |
| 1093 | for (size_t j = 0; j < num_refs; j++) { |
| 1094 | Object* object = cur->GetReference(j); |
| 1095 | if (object != NULL) { |
| 1096 | visitor(object, arg); |
| 1097 | } |
| 1098 | } |
| 1099 | } |
| 1100 | } |
| 1101 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1102 | Object* Thread::DecodeJObject(jobject obj) { |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 1103 | DCHECK(CanAccessDirectReferences()); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1104 | if (obj == NULL) { |
| 1105 | return NULL; |
| 1106 | } |
| 1107 | IndirectRef ref = reinterpret_cast<IndirectRef>(obj); |
| 1108 | IndirectRefKind kind = GetIndirectRefKind(ref); |
| 1109 | Object* result; |
| 1110 | switch (kind) { |
| 1111 | case kLocal: |
| 1112 | { |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 1113 | IndirectReferenceTable& locals = jni_env_->locals; |
Elliott Hughes | cf4c6c4 | 2011-09-01 15:16:42 -0700 | [diff] [blame] | 1114 | result = const_cast<Object*>(locals.Get(ref)); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1115 | break; |
| 1116 | } |
| 1117 | case kGlobal: |
| 1118 | { |
| 1119 | JavaVMExt* vm = Runtime::Current()->GetJavaVM(); |
| 1120 | IndirectReferenceTable& globals = vm->globals; |
| 1121 | MutexLock mu(vm->globals_lock); |
Elliott Hughes | cf4c6c4 | 2011-09-01 15:16:42 -0700 | [diff] [blame] | 1122 | result = const_cast<Object*>(globals.Get(ref)); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1123 | break; |
| 1124 | } |
| 1125 | case kWeakGlobal: |
| 1126 | { |
| 1127 | JavaVMExt* vm = Runtime::Current()->GetJavaVM(); |
| 1128 | IndirectReferenceTable& weak_globals = vm->weak_globals; |
| 1129 | MutexLock mu(vm->weak_globals_lock); |
Elliott Hughes | cf4c6c4 | 2011-09-01 15:16:42 -0700 | [diff] [blame] | 1130 | result = const_cast<Object*>(weak_globals.Get(ref)); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1131 | if (result == kClearedJniWeakGlobal) { |
| 1132 | // This is a special case where it's okay to return NULL. |
| 1133 | return NULL; |
| 1134 | } |
| 1135 | break; |
| 1136 | } |
| 1137 | case kSirtOrInvalid: |
| 1138 | default: |
| 1139 | // TODO: make stack indirect reference table lookup more efficient |
| 1140 | // Check if this is a local reference in the SIRT |
TDYa127 | 28f1a14 | 2012-03-15 21:51:52 -0700 | [diff] [blame] | 1141 | if (StackReferencesContain(obj)) { |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 1142 | result = *reinterpret_cast<Object**>(obj); // Read from SIRT |
Elliott Hughes | c2dc62d | 2012-01-17 20:06:12 -0800 | [diff] [blame] | 1143 | } else if (Runtime::Current()->GetJavaVM()->work_around_app_jni_bugs) { |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1144 | // Assume an invalid local reference is actually a direct pointer. |
| 1145 | result = reinterpret_cast<Object*>(obj); |
| 1146 | } else { |
Elliott Hughes | a250199 | 2011-08-26 19:39:54 -0700 | [diff] [blame] | 1147 | result = kInvalidIndirectRefObject; |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1148 | } |
| 1149 | } |
| 1150 | |
| 1151 | if (result == NULL) { |
Elliott Hughes | a250199 | 2011-08-26 19:39:54 -0700 | [diff] [blame] | 1152 | LOG(ERROR) << "JNI ERROR (app bug): use of deleted " << kind << ": " << obj; |
| 1153 | JniAbort(NULL); |
| 1154 | } else { |
| 1155 | if (result != kInvalidIndirectRefObject) { |
Elliott Hughes | b3bd5f0 | 2012-03-08 21:05:27 -0800 | [diff] [blame] | 1156 | Runtime::Current()->GetHeap()->VerifyObject(result); |
Elliott Hughes | a250199 | 2011-08-26 19:39:54 -0700 | [diff] [blame] | 1157 | } |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1158 | } |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1159 | return result; |
| 1160 | } |
| 1161 | |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1162 | class CountStackDepthVisitor : public Thread::StackVisitor { |
| 1163 | public: |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1164 | CountStackDepthVisitor() : depth_(0), skip_depth_(0), skipping_(true) {} |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1165 | |
Elliott Hughes | 1bac54f | 2012-03-16 12:48:31 -0700 | [diff] [blame] | 1166 | bool VisitFrame(const Frame& frame, uintptr_t /*pc*/) { |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1167 | // 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] | 1168 | // Note we also skip the frame if it doesn't have a method (namely the callee |
| 1169 | // save frame) |
Ian Rogers | 5167c97 | 2012-02-03 10:41:20 -0800 | [diff] [blame] | 1170 | if (skipping_ && frame.HasMethod() && |
| 1171 | !Throwable::GetJavaLangThrowable()->IsAssignableFrom(frame.GetMethod()->GetDeclaringClass())) { |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1172 | skipping_ = false; |
| 1173 | } |
| 1174 | if (!skipping_) { |
Ian Rogers | 6b0870d | 2011-12-15 19:38:12 -0800 | [diff] [blame] | 1175 | if (frame.HasMethod()) { // ignore callee save frames |
| 1176 | ++depth_; |
| 1177 | } |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1178 | } else { |
| 1179 | ++skip_depth_; |
| 1180 | } |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1181 | return true; |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 1182 | } |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1183 | |
| 1184 | int GetDepth() const { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1185 | return depth_; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1186 | } |
| 1187 | |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1188 | int GetSkipDepth() const { |
| 1189 | return skip_depth_; |
| 1190 | } |
| 1191 | |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1192 | private: |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1193 | uint32_t depth_; |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1194 | uint32_t skip_depth_; |
| 1195 | bool skipping_; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1196 | }; |
| 1197 | |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1198 | class BuildInternalStackTraceVisitor : public Thread::StackVisitor { |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1199 | public: |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 1200 | explicit BuildInternalStackTraceVisitor(int skip_depth) |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1201 | : 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] | 1202 | } |
| 1203 | |
| 1204 | bool Init(int depth, ScopedJniThreadState& ts) { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1205 | // 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] | 1206 | method_trace_ = Runtime::Current()->GetClassLinker()->AllocObjectArray<Object>(depth + 1); |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1207 | if (method_trace_ == NULL) { |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 1208 | return false; |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1209 | } |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1210 | // Register a local reference as IntArray::Alloc may trigger GC |
| 1211 | local_ref_ = AddLocalReference<jobject>(ts.Env(), method_trace_); |
| 1212 | pc_trace_ = IntArray::Alloc(depth); |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1213 | if (pc_trace_ == NULL) { |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 1214 | return false; |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1215 | } |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1216 | #ifdef MOVING_GARBAGE_COLLECTOR |
| 1217 | // Re-read after potential GC |
Brian Carlstrom | 2673644 | 2012-02-16 18:24:26 -0800 | [diff] [blame] | 1218 | method_trace_ = Decode<ObjectArray<Object>*>(ts.Env(), local_ref_); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1219 | #endif |
| 1220 | // Save PC trace in last element of method trace, also places it into the |
| 1221 | // object graph. |
| 1222 | method_trace_->Set(depth, pc_trace_); |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 1223 | return true; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1224 | } |
| 1225 | |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1226 | virtual ~BuildInternalStackTraceVisitor() {} |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1227 | |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1228 | bool VisitFrame(const Frame& frame, uintptr_t pc) { |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1229 | if (method_trace_ == NULL || pc_trace_ == NULL) { |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1230 | return true; // We're probably trying to fillInStackTrace for an OutOfMemoryError. |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1231 | } |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1232 | if (skip_depth_ > 0) { |
| 1233 | skip_depth_--; |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1234 | return true; |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1235 | } |
Ian Rogers | 6b0870d | 2011-12-15 19:38:12 -0800 | [diff] [blame] | 1236 | if (!frame.HasMethod()) { |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1237 | return true; // ignore callee save frames |
Ian Rogers | 6b0870d | 2011-12-15 19:38:12 -0800 | [diff] [blame] | 1238 | } |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1239 | method_trace_->Set(count_, frame.GetMethod()); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1240 | pc_trace_->Set(count_, pc); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1241 | ++count_; |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1242 | return true; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1243 | } |
| 1244 | |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1245 | jobject GetInternalStackTrace() const { |
| 1246 | return local_ref_; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1247 | } |
| 1248 | |
| 1249 | private: |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1250 | // How many more frames to skip. |
| 1251 | int32_t skip_depth_; |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1252 | // Current position down stack trace |
| 1253 | uint32_t count_; |
| 1254 | // Array of return PC values |
| 1255 | IntArray* pc_trace_; |
| 1256 | // An array of the methods on the stack, the last entry is a reference to the |
| 1257 | // PC trace |
| 1258 | ObjectArray<Object>* method_trace_; |
| 1259 | // Local indirect reference table entry for method trace |
| 1260 | jobject local_ref_; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1261 | }; |
| 1262 | |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 1263 | #if !defined(ART_USE_LLVM_COMPILER) |
Elliott Hughes | a43cb5e | 2011-10-07 11:37:59 -0700 | [diff] [blame] | 1264 | // TODO: remove this. |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 1265 | static uintptr_t ManglePc(uintptr_t pc) { |
Elliott Hughes | a43cb5e | 2011-10-07 11:37:59 -0700 | [diff] [blame] | 1266 | // Move the PC back 2 bytes as a call will frequently terminate the |
| 1267 | // decoding of a particular instruction and we want to make sure we |
| 1268 | // get the Dex PC of the instruction with the call and not the |
| 1269 | // instruction following. |
| 1270 | if (pc > 0) { pc -= 2; } |
| 1271 | return pc; |
| 1272 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 1273 | #endif |
Elliott Hughes | a43cb5e | 2011-10-07 11:37:59 -0700 | [diff] [blame] | 1274 | |
| 1275 | // TODO: remove this. |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 1276 | static uintptr_t DemanglePc(uintptr_t pc) { |
Elliott Hughes | a43cb5e | 2011-10-07 11:37:59 -0700 | [diff] [blame] | 1277 | // 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] | 1278 | if (pc > 0) { pc += 2; } |
| 1279 | return pc; |
Elliott Hughes | a43cb5e | 2011-10-07 11:37:59 -0700 | [diff] [blame] | 1280 | } |
Ian Rogers | f57c47c | 2011-10-06 00:06:17 -0700 | [diff] [blame] | 1281 | |
Logan Chien | f7ad17e | 2012-03-15 03:10:03 +0800 | [diff] [blame] | 1282 | void Thread::PushShadowFrame(ShadowFrame* frame) { |
| 1283 | frame->SetLink(top_shadow_frame_); |
| 1284 | top_shadow_frame_ = frame; |
| 1285 | } |
| 1286 | |
| 1287 | ShadowFrame* Thread::PopShadowFrame() { |
| 1288 | CHECK(top_shadow_frame_ != NULL); |
| 1289 | ShadowFrame* frame = top_shadow_frame_; |
| 1290 | top_shadow_frame_ = frame->GetLink(); |
| 1291 | return frame; |
| 1292 | } |
| 1293 | |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1294 | void Thread::PushSirt(StackIndirectReferenceTable* sirt) { |
| 1295 | sirt->SetLink(top_sirt_); |
| 1296 | top_sirt_ = sirt; |
| 1297 | } |
| 1298 | |
| 1299 | StackIndirectReferenceTable* Thread::PopSirt() { |
| 1300 | CHECK(top_sirt_ != NULL); |
| 1301 | StackIndirectReferenceTable* sirt = top_sirt_; |
| 1302 | top_sirt_ = top_sirt_->GetLink(); |
| 1303 | return sirt; |
| 1304 | } |
| 1305 | |
TDYa127 | 9b2ba2e | 2012-03-19 10:12:32 -0700 | [diff] [blame] | 1306 | #if !defined(ART_USE_LLVM_COMPILER) // LLVM use ShadowFrame |
| 1307 | |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1308 | void Thread::WalkStack(StackVisitor* visitor, bool include_upcalls) const { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1309 | Frame frame = GetTopOfStack(); |
Elliott Hughes | a43cb5e | 2011-10-07 11:37:59 -0700 | [diff] [blame] | 1310 | uintptr_t pc = ManglePc(top_of_managed_stack_pc_); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 1311 | uint32_t trace_stack_depth = 0; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1312 | // TODO: enable this CHECK after native_to_managed_record_ is initialized during startup. |
| 1313 | // CHECK(native_to_managed_record_ != NULL); |
| 1314 | NativeToManagedRecord* record = native_to_managed_record_; |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1315 | bool method_tracing_active = Runtime::Current()->IsMethodTracingActive(); |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1316 | while (frame.GetSP() != NULL) { |
| 1317 | for ( ; frame.GetMethod() != NULL; frame.Next()) { |
Brian Carlstrom | f8bbb84 | 2012-03-14 03:01:42 -0700 | [diff] [blame] | 1318 | frame.GetMethod()->AssertPcIsWithinCode(pc); |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1319 | bool should_continue = visitor->VisitFrame(frame, pc); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1320 | if (UNLIKELY(!should_continue)) { |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1321 | return; |
| 1322 | } |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1323 | uintptr_t return_pc = frame.GetReturnPC(); |
| 1324 | if (LIKELY(!method_tracing_active)) { |
| 1325 | pc = ManglePc(return_pc); |
| 1326 | } else { |
jeffhao | 0791adc | 2012-04-04 11:14:32 -0700 | [diff] [blame] | 1327 | // While profiling, the return pc is restored from the side stack, except when walking |
| 1328 | // the stack for an exception where the side stack will be unwound in VisitFrame. |
| 1329 | if (IsTraceExitPc(return_pc) && !include_upcalls) { |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 1330 | TraceStackFrame trace_frame = GetTraceStackFrame(trace_stack_depth++); |
jeffhao | 26c0a1a | 2012-01-17 16:28:33 -0800 | [diff] [blame] | 1331 | CHECK(trace_frame.method_ == frame.GetMethod()); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 1332 | pc = ManglePc(trace_frame.return_pc_); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1333 | } else { |
| 1334 | pc = ManglePc(return_pc); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 1335 | } |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 1336 | } |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1337 | } |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1338 | if (include_upcalls) { |
| 1339 | bool should_continue = visitor->VisitFrame(frame, pc); |
| 1340 | if (!should_continue) { |
| 1341 | return; |
| 1342 | } |
| 1343 | } |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1344 | if (record == NULL) { |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1345 | return; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1346 | } |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1347 | // last_tos should return Frame instead of sp? |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1348 | frame.SetSP(reinterpret_cast<Method**>(record->last_top_of_managed_stack_)); |
Elliott Hughes | a43cb5e | 2011-10-07 11:37:59 -0700 | [diff] [blame] | 1349 | pc = ManglePc(record->last_top_of_managed_stack_pc_); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1350 | record = record->link_; |
| 1351 | } |
| 1352 | } |
| 1353 | |
TDYa127 | 9b2ba2e | 2012-03-19 10:12:32 -0700 | [diff] [blame] | 1354 | #else // defined(ART_USE_LLVM_COMPILER) // LLVM uses ShadowFrame |
| 1355 | |
| 1356 | void Thread::WalkStack(StackVisitor* visitor, bool /*include_upcalls*/) const { |
| 1357 | for (ShadowFrame* cur = top_shadow_frame_; cur; cur = cur->GetLink()) { |
| 1358 | Frame frame; |
| 1359 | frame.SetSP(reinterpret_cast<Method**>(reinterpret_cast<byte*>(cur) + |
| 1360 | ShadowFrame::MethodOffset())); |
TDYa127 | c8dc101 | 2012-04-19 07:03:33 -0700 | [diff] [blame] | 1361 | bool should_continue = visitor->VisitFrame(frame, cur->GetDexPC()); |
TDYa127 | 9b2ba2e | 2012-03-19 10:12:32 -0700 | [diff] [blame] | 1362 | if (!should_continue) { |
| 1363 | return; |
| 1364 | } |
| 1365 | } |
| 1366 | } |
| 1367 | |
| 1368 | /* |
| 1369 | * | | |
| 1370 | * | | |
| 1371 | * | | |
| 1372 | * | . | |
| 1373 | * | . | |
| 1374 | * | . | |
| 1375 | * | . | |
| 1376 | * | Method* | |
| 1377 | * | . | |
| 1378 | * | . | <-- top_shadow_frame_ (ShadowFrame*) |
| 1379 | * / +------------------------+ |
| 1380 | * ->| . | |
| 1381 | * . | . | |
| 1382 | * . | . | |
| 1383 | * /+------------------------+ |
| 1384 | * / | . | |
| 1385 | * / | . | |
| 1386 | * --- | | . | |
| 1387 | * | | | . | |
| 1388 | * | | Method* | <-- frame.GetSP() (Method**) |
| 1389 | * ShadowFrame \ | . | |
| 1390 | * | ->| . | <-- cur (ShadowFrame*) |
| 1391 | * --- /+------------------------+ |
| 1392 | * / | . | |
| 1393 | * / | . | |
| 1394 | * --- | | . | |
| 1395 | * | cur->GetLink() | | . | |
| 1396 | * | | Method* | |
| 1397 | * ShadowFrame \ | . | |
| 1398 | * | ->| . | |
| 1399 | * --- +------------------------+ |
| 1400 | * | . | |
| 1401 | * | . | |
| 1402 | * | . | |
| 1403 | * +========================+ |
| 1404 | */ |
| 1405 | |
| 1406 | #endif |
| 1407 | |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1408 | jobject Thread::CreateInternalStackTrace(JNIEnv* env) const { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1409 | // Compute depth of stack |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1410 | CountStackDepthVisitor count_visitor; |
| 1411 | WalkStack(&count_visitor); |
| 1412 | int32_t depth = count_visitor.GetDepth(); |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1413 | int32_t skip_depth = count_visitor.GetSkipDepth(); |
Shih-wei Liao | 4417536 | 2011-08-28 16:59:17 -0700 | [diff] [blame] | 1414 | |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1415 | // Transition into runnable state to work on Object*/Array* |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1416 | ScopedJniThreadState ts(env); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1417 | |
| 1418 | // Build internal stack trace |
Ian Rogers | 77f74c1 | 2012-02-16 22:35:30 -0800 | [diff] [blame] | 1419 | BuildInternalStackTraceVisitor build_trace_visitor(skip_depth); |
| 1420 | if (!build_trace_visitor.Init(depth, ts)) { |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 1421 | return NULL; // Allocation failed |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 1422 | } |
Brian Carlstrom | 2673644 | 2012-02-16 18:24:26 -0800 | [diff] [blame] | 1423 | WalkStack(&build_trace_visitor); |
| 1424 | return build_trace_visitor.GetInternalStackTrace(); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1425 | } |
| 1426 | |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1427 | jobjectArray Thread::InternalStackTraceToStackTraceElementArray(JNIEnv* env, jobject internal, |
| 1428 | jobjectArray output_array, int* stack_depth) { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1429 | // Transition into runnable state to work on Object*/Array* |
| 1430 | ScopedJniThreadState ts(env); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1431 | // Decode the internal stack trace into the depth, method trace and PC trace |
| 1432 | ObjectArray<Object>* method_trace = |
| 1433 | down_cast<ObjectArray<Object>*>(Decode<Object*>(ts.Env(), internal)); |
Ian Rogers | 9074b99 | 2011-10-26 17:41:55 -0700 | [diff] [blame] | 1434 | int32_t depth = method_trace->GetLength() - 1; |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1435 | IntArray* pc_trace = down_cast<IntArray*>(method_trace->Get(depth)); |
| 1436 | |
| 1437 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 1438 | |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1439 | jobjectArray result; |
| 1440 | ObjectArray<StackTraceElement>* java_traces; |
| 1441 | if (output_array != NULL) { |
| 1442 | // Reuse the array we were given. |
| 1443 | result = output_array; |
| 1444 | java_traces = reinterpret_cast<ObjectArray<StackTraceElement>*>(Decode<Array*>(env, |
| 1445 | output_array)); |
| 1446 | // ...adjusting the number of frames we'll write to not exceed the array length. |
| 1447 | depth = std::min(depth, java_traces->GetLength()); |
| 1448 | } else { |
| 1449 | // Create java_trace array and place in local reference table |
| 1450 | java_traces = class_linker->AllocStackTraceElementArray(depth); |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1451 | if (java_traces == NULL) { |
| 1452 | return NULL; |
| 1453 | } |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1454 | result = AddLocalReference<jobjectArray>(ts.Env(), java_traces); |
| 1455 | } |
| 1456 | |
| 1457 | if (stack_depth != NULL) { |
| 1458 | *stack_depth = depth; |
| 1459 | } |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 1460 | |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1461 | MethodHelper mh; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1462 | for (int32_t i = 0; i < depth; ++i) { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1463 | // Prepare parameters for StackTraceElement(String cls, String method, String file, int line) |
| 1464 | Method* method = down_cast<Method*>(method_trace->Get(i)); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1465 | mh.ChangeMethod(method); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1466 | uint32_t native_pc = pc_trace->Get(i); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1467 | int32_t line_number = mh.GetLineNumFromNativePC(native_pc); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1468 | // Allocate element, potentially triggering GC |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1469 | // TODO: reuse class_name_object via Class::name_? |
Ian Rogers | 4860131 | 2011-12-07 16:45:19 -0800 | [diff] [blame] | 1470 | const char* descriptor = mh.GetDeclaringClassDescriptor(); |
| 1471 | CHECK(descriptor != NULL); |
| 1472 | std::string class_name(PrettyDescriptor(descriptor)); |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1473 | SirtRef<String> class_name_object(String::AllocFromModifiedUtf8(class_name.c_str())); |
| 1474 | if (class_name_object.get() == NULL) { |
| 1475 | return NULL; |
| 1476 | } |
Ian Rogers | 4860131 | 2011-12-07 16:45:19 -0800 | [diff] [blame] | 1477 | const char* method_name = mh.GetName(); |
| 1478 | CHECK(method_name != NULL); |
| 1479 | SirtRef<String> method_name_object(String::AllocFromModifiedUtf8(method_name)); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1480 | if (method_name_object.get() == NULL) { |
| 1481 | return NULL; |
| 1482 | } |
Ian Rogers | 4860131 | 2011-12-07 16:45:19 -0800 | [diff] [blame] | 1483 | const char* source_file = mh.GetDeclaringClassSourceFile(); |
| 1484 | SirtRef<String> source_name_object(String::AllocFromModifiedUtf8(source_file)); |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1485 | StackTraceElement* obj = StackTraceElement::Alloc(class_name_object.get(), |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1486 | method_name_object.get(), |
| 1487 | source_name_object.get(), |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1488 | line_number); |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1489 | if (obj == NULL) { |
| 1490 | return NULL; |
| 1491 | } |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1492 | #ifdef MOVING_GARBAGE_COLLECTOR |
| 1493 | // Re-read after potential GC |
| 1494 | java_traces = Decode<ObjectArray<Object>*>(ts.Env(), result); |
| 1495 | method_trace = down_cast<ObjectArray<Object>*>(Decode<Object*>(ts.Env(), internal)); |
| 1496 | pc_trace = down_cast<IntArray*>(method_trace->Get(depth)); |
| 1497 | #endif |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 1498 | java_traces->Set(i, obj); |
| 1499 | } |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1500 | return result; |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 1501 | } |
| 1502 | |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 1503 | void Thread::ThrowNewExceptionF(const char* exception_class_descriptor, const char* fmt, ...) { |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 1504 | va_list args; |
| 1505 | va_start(args, fmt); |
Elliott Hughes | 4a2b417 | 2011-09-20 17:08:25 -0700 | [diff] [blame] | 1506 | ThrowNewExceptionV(exception_class_descriptor, fmt, args); |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 1507 | va_end(args); |
Elliott Hughes | 4a2b417 | 2011-09-20 17:08:25 -0700 | [diff] [blame] | 1508 | } |
| 1509 | |
| 1510 | void Thread::ThrowNewExceptionV(const char* exception_class_descriptor, const char* fmt, va_list ap) { |
| 1511 | std::string msg; |
| 1512 | StringAppendV(&msg, fmt, ap); |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 1513 | ThrowNewException(exception_class_descriptor, msg.c_str()); |
| 1514 | } |
Elliott Hughes | 37f7a40 | 2011-08-22 18:56:01 -0700 | [diff] [blame] | 1515 | |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 1516 | void Thread::ThrowNewException(const char* exception_class_descriptor, const char* msg) { |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 1517 | // Convert "Ljava/lang/Exception;" into JNI-style "java/lang/Exception". |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 1518 | CHECK_EQ('L', exception_class_descriptor[0]); |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 1519 | std::string descriptor(exception_class_descriptor + 1); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 1520 | CHECK_EQ(';', descriptor[descriptor.length() - 1]); |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 1521 | descriptor.erase(descriptor.length() - 1); |
| 1522 | |
| 1523 | JNIEnv* env = GetJniEnv(); |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1524 | ScopedLocalRef<jclass> exception_class(env, env->FindClass(descriptor.c_str())); |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1525 | if (exception_class.get() == NULL) { |
| 1526 | LOG(ERROR) << "Couldn't throw new " << descriptor << " because JNI FindClass failed: " |
| 1527 | << PrettyTypeOf(GetException()); |
| 1528 | CHECK(IsExceptionPending()); |
| 1529 | return; |
| 1530 | } |
Brian Carlstrom | ebd1fd2 | 2011-12-07 15:46:26 -0800 | [diff] [blame] | 1531 | if (!Runtime::Current()->IsStarted()) { |
| 1532 | // Something is trying to throw an exception without a started |
| 1533 | // runtime, which is the common case in the compiler. We won't be |
| 1534 | // able to invoke the constructor of the exception, so use |
| 1535 | // AllocObject which will not invoke a constructor. |
| 1536 | ScopedLocalRef<jthrowable> exception( |
| 1537 | env, reinterpret_cast<jthrowable>(env->AllocObject(exception_class.get()))); |
| 1538 | if (exception.get() != NULL) { |
| 1539 | ScopedJniThreadState ts(env); |
| 1540 | Throwable* t = reinterpret_cast<Throwable*>(ts.Self()->DecodeJObject(exception.get())); |
Ian Rogers | 02fbef0 | 2012-01-31 22:15:33 -0800 | [diff] [blame] | 1541 | t->SetDetailMessage(String::AllocFromModifiedUtf8(msg)); |
Brian Carlstrom | ebd1fd2 | 2011-12-07 15:46:26 -0800 | [diff] [blame] | 1542 | ts.Self()->SetException(t); |
| 1543 | } else { |
| 1544 | LOG(ERROR) << "Couldn't throw new " << descriptor << " because JNI AllocObject failed: " |
| 1545 | << PrettyTypeOf(GetException()); |
| 1546 | CHECK(IsExceptionPending()); |
| 1547 | } |
| 1548 | return; |
| 1549 | } |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1550 | int rc = env->ThrowNew(exception_class.get(), msg); |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1551 | if (rc != JNI_OK) { |
| 1552 | LOG(ERROR) << "Couldn't throw new " << descriptor << " because JNI ThrowNew failed: " |
| 1553 | << PrettyTypeOf(GetException()); |
| 1554 | CHECK(IsExceptionPending()); |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1555 | } |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 1556 | } |
| 1557 | |
Elliott Hughes | 2ced6a5 | 2011-10-16 18:44:48 -0700 | [diff] [blame] | 1558 | void Thread::ThrowOutOfMemoryError(const char* msg) { |
| 1559 | LOG(ERROR) << StringPrintf("Throwing OutOfMemoryError \"%s\"%s", |
| 1560 | msg, (throwing_OutOfMemoryError_ ? " (recursive case)" : "")); |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1561 | if (!throwing_OutOfMemoryError_) { |
| 1562 | throwing_OutOfMemoryError_ = true; |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1563 | ThrowNewException("Ljava/lang/OutOfMemoryError;", NULL); |
Elliott Hughes | 418dfe7 | 2011-10-06 18:56:27 -0700 | [diff] [blame] | 1564 | } else { |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1565 | SetException(pre_allocated_OutOfMemoryError_); |
Elliott Hughes | 418dfe7 | 2011-10-06 18:56:27 -0700 | [diff] [blame] | 1566 | } |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1567 | throwing_OutOfMemoryError_ = false; |
Elliott Hughes | 79082e3 | 2011-08-25 12:07:32 -0700 | [diff] [blame] | 1568 | } |
| 1569 | |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1570 | |
Elliott Hughes | 498508c | 2011-10-17 14:58:22 -0700 | [diff] [blame] | 1571 | Thread* Thread::CurrentFromGdb() { |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1572 | return Thread::Current(); |
| 1573 | } |
| 1574 | |
| 1575 | void Thread::DumpFromGdb() const { |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 1576 | std::ostringstream ss; |
| 1577 | Dump(ss); |
Elliott Hughes | 9557241 | 2011-12-13 18:14:20 -0800 | [diff] [blame] | 1578 | std::string str(ss.str()); |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 1579 | // log to stderr for debugging command line processes |
| 1580 | std::cerr << str; |
| 1581 | #ifdef HAVE_ANDROID_OS |
| 1582 | // log to logcat for debugging frameworks processes |
| 1583 | LOG(INFO) << str; |
| 1584 | #endif |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1585 | } |
| 1586 | |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 1587 | struct EntryPointInfo { |
| 1588 | uint32_t offset; |
| 1589 | const char* name; |
| 1590 | }; |
| 1591 | #define ENTRY_POINT_INFO(x) { ENTRYPOINT_OFFSET(x), #x } |
| 1592 | static const EntryPointInfo gThreadEntryPointInfo[] = { |
| 1593 | ENTRY_POINT_INFO(pAllocArrayFromCode), |
| 1594 | ENTRY_POINT_INFO(pAllocArrayFromCodeWithAccessCheck), |
| 1595 | ENTRY_POINT_INFO(pAllocObjectFromCode), |
| 1596 | ENTRY_POINT_INFO(pAllocObjectFromCodeWithAccessCheck), |
| 1597 | ENTRY_POINT_INFO(pCheckAndAllocArrayFromCode), |
| 1598 | ENTRY_POINT_INFO(pCheckAndAllocArrayFromCodeWithAccessCheck), |
| 1599 | ENTRY_POINT_INFO(pInstanceofNonTrivialFromCode), |
| 1600 | ENTRY_POINT_INFO(pCanPutArrayElementFromCode), |
| 1601 | ENTRY_POINT_INFO(pCheckCastFromCode), |
| 1602 | ENTRY_POINT_INFO(pDebugMe), |
| 1603 | ENTRY_POINT_INFO(pUpdateDebuggerFromCode), |
| 1604 | ENTRY_POINT_INFO(pInitializeStaticStorage), |
| 1605 | ENTRY_POINT_INFO(pInitializeTypeAndVerifyAccessFromCode), |
| 1606 | ENTRY_POINT_INFO(pInitializeTypeFromCode), |
| 1607 | ENTRY_POINT_INFO(pResolveStringFromCode), |
| 1608 | ENTRY_POINT_INFO(pSet32Instance), |
| 1609 | ENTRY_POINT_INFO(pSet32Static), |
| 1610 | ENTRY_POINT_INFO(pSet64Instance), |
| 1611 | ENTRY_POINT_INFO(pSet64Static), |
| 1612 | ENTRY_POINT_INFO(pSetObjInstance), |
| 1613 | ENTRY_POINT_INFO(pSetObjStatic), |
| 1614 | ENTRY_POINT_INFO(pGet32Instance), |
| 1615 | ENTRY_POINT_INFO(pGet32Static), |
| 1616 | ENTRY_POINT_INFO(pGet64Instance), |
| 1617 | ENTRY_POINT_INFO(pGet64Static), |
| 1618 | ENTRY_POINT_INFO(pGetObjInstance), |
| 1619 | ENTRY_POINT_INFO(pGetObjStatic), |
| 1620 | ENTRY_POINT_INFO(pHandleFillArrayDataFromCode), |
| 1621 | ENTRY_POINT_INFO(pDecodeJObjectInThread), |
| 1622 | ENTRY_POINT_INFO(pFindNativeMethod), |
| 1623 | ENTRY_POINT_INFO(pLockObjectFromCode), |
| 1624 | ENTRY_POINT_INFO(pUnlockObjectFromCode), |
| 1625 | ENTRY_POINT_INFO(pCmpgDouble), |
| 1626 | ENTRY_POINT_INFO(pCmpgFloat), |
| 1627 | ENTRY_POINT_INFO(pCmplDouble), |
| 1628 | ENTRY_POINT_INFO(pCmplFloat), |
| 1629 | ENTRY_POINT_INFO(pDadd), |
| 1630 | ENTRY_POINT_INFO(pDdiv), |
| 1631 | ENTRY_POINT_INFO(pDmul), |
| 1632 | ENTRY_POINT_INFO(pDsub), |
| 1633 | ENTRY_POINT_INFO(pF2d), |
| 1634 | ENTRY_POINT_INFO(pFmod), |
| 1635 | ENTRY_POINT_INFO(pI2d), |
| 1636 | ENTRY_POINT_INFO(pL2d), |
| 1637 | ENTRY_POINT_INFO(pD2f), |
| 1638 | ENTRY_POINT_INFO(pFadd), |
| 1639 | ENTRY_POINT_INFO(pFdiv), |
| 1640 | ENTRY_POINT_INFO(pFmodf), |
| 1641 | ENTRY_POINT_INFO(pFmul), |
| 1642 | ENTRY_POINT_INFO(pFsub), |
| 1643 | ENTRY_POINT_INFO(pI2f), |
| 1644 | ENTRY_POINT_INFO(pL2f), |
| 1645 | ENTRY_POINT_INFO(pD2iz), |
| 1646 | ENTRY_POINT_INFO(pF2iz), |
| 1647 | ENTRY_POINT_INFO(pIdivmod), |
| 1648 | ENTRY_POINT_INFO(pD2l), |
| 1649 | ENTRY_POINT_INFO(pF2l), |
| 1650 | ENTRY_POINT_INFO(pLdiv), |
| 1651 | ENTRY_POINT_INFO(pLdivmod), |
| 1652 | ENTRY_POINT_INFO(pLmul), |
| 1653 | ENTRY_POINT_INFO(pShlLong), |
| 1654 | ENTRY_POINT_INFO(pShrLong), |
| 1655 | ENTRY_POINT_INFO(pUshrLong), |
| 1656 | ENTRY_POINT_INFO(pIndexOf), |
| 1657 | ENTRY_POINT_INFO(pMemcmp16), |
| 1658 | ENTRY_POINT_INFO(pStringCompareTo), |
| 1659 | ENTRY_POINT_INFO(pMemcpy), |
| 1660 | ENTRY_POINT_INFO(pUnresolvedDirectMethodTrampolineFromCode), |
| 1661 | ENTRY_POINT_INFO(pInvokeDirectTrampolineWithAccessCheck), |
| 1662 | ENTRY_POINT_INFO(pInvokeInterfaceTrampoline), |
| 1663 | ENTRY_POINT_INFO(pInvokeInterfaceTrampolineWithAccessCheck), |
| 1664 | ENTRY_POINT_INFO(pInvokeStaticTrampolineWithAccessCheck), |
| 1665 | ENTRY_POINT_INFO(pInvokeSuperTrampolineWithAccessCheck), |
| 1666 | ENTRY_POINT_INFO(pInvokeVirtualTrampolineWithAccessCheck), |
| 1667 | ENTRY_POINT_INFO(pCheckSuspendFromCode), |
| 1668 | ENTRY_POINT_INFO(pTestSuspendFromCode), |
| 1669 | ENTRY_POINT_INFO(pDeliverException), |
| 1670 | ENTRY_POINT_INFO(pThrowAbstractMethodErrorFromCode), |
| 1671 | ENTRY_POINT_INFO(pThrowArrayBoundsFromCode), |
| 1672 | ENTRY_POINT_INFO(pThrowDivZeroFromCode), |
| 1673 | ENTRY_POINT_INFO(pThrowNoSuchMethodFromCode), |
| 1674 | ENTRY_POINT_INFO(pThrowNullPointerFromCode), |
| 1675 | ENTRY_POINT_INFO(pThrowStackOverflowFromCode), |
| 1676 | ENTRY_POINT_INFO(pThrowVerificationErrorFromCode), |
| 1677 | }; |
| 1678 | #undef ENTRY_POINT_INFO |
| 1679 | |
Elliott Hughes | 28fa76d | 2012-04-09 17:31:46 -0700 | [diff] [blame] | 1680 | void Thread::DumpThreadOffset(std::ostream& os, uint32_t offset, size_t size_of_pointers) { |
| 1681 | CHECK_EQ(size_of_pointers, 4U); // TODO: support 64-bit targets. |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 1682 | |
| 1683 | #define DO_THREAD_OFFSET(x) if (offset == static_cast<uint32_t>(OFFSETOF_VOLATILE_MEMBER(Thread, x))) { os << # x; return; } |
| 1684 | DO_THREAD_OFFSET(card_table_); |
| 1685 | DO_THREAD_OFFSET(exception_); |
| 1686 | DO_THREAD_OFFSET(jni_env_); |
| 1687 | DO_THREAD_OFFSET(self_); |
| 1688 | DO_THREAD_OFFSET(stack_end_); |
| 1689 | DO_THREAD_OFFSET(state_); |
| 1690 | DO_THREAD_OFFSET(suspend_count_); |
| 1691 | DO_THREAD_OFFSET(thin_lock_id_); |
| 1692 | DO_THREAD_OFFSET(top_of_managed_stack_); |
| 1693 | DO_THREAD_OFFSET(top_of_managed_stack_pc_); |
| 1694 | DO_THREAD_OFFSET(top_sirt_); |
Elliott Hughes | 28fa76d | 2012-04-09 17:31:46 -0700 | [diff] [blame] | 1695 | #undef DO_THREAD_OFFSET |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 1696 | |
| 1697 | size_t entry_point_count = arraysize(gThreadEntryPointInfo); |
| 1698 | CHECK_EQ(entry_point_count * size_of_pointers, sizeof(EntryPoints)); |
| 1699 | uint32_t expected_offset = OFFSETOF_MEMBER(Thread, entrypoints_); |
| 1700 | for (size_t i = 0; i < entry_point_count; ++i) { |
| 1701 | CHECK_EQ(gThreadEntryPointInfo[i].offset, expected_offset); |
| 1702 | expected_offset += size_of_pointers; |
| 1703 | if (gThreadEntryPointInfo[i].offset == offset) { |
| 1704 | os << gThreadEntryPointInfo[i].name; |
| 1705 | return; |
| 1706 | } |
| 1707 | } |
| 1708 | os << offset; |
Elliott Hughes | 28fa76d | 2012-04-09 17:31:46 -0700 | [diff] [blame] | 1709 | } |
| 1710 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1711 | class CatchBlockStackVisitor : public Thread::StackVisitor { |
| 1712 | public: |
| 1713 | CatchBlockStackVisitor(Class* to_find, Context* ljc) |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1714 | : to_find_(to_find), long_jump_context_(ljc), native_method_count_(0), |
| 1715 | method_tracing_active_(Runtime::Current()->IsMethodTracingActive()) { |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1716 | #ifndef NDEBUG |
| 1717 | handler_pc_ = 0xEBADC0DE; |
| 1718 | handler_frame_.SetSP(reinterpret_cast<Method**>(0xEBADF00D)); |
| 1719 | #endif |
| 1720 | } |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1721 | |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1722 | bool VisitFrame(const Frame& fr, uintptr_t pc) { |
| 1723 | Method* method = fr.GetMethod(); |
| 1724 | if (method == NULL) { |
| 1725 | // This is the upcall, we remember the frame and last_pc so that we may |
| 1726 | // long jump to them |
| 1727 | handler_pc_ = DemanglePc(pc); |
| 1728 | handler_frame_ = fr; |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1729 | return false; // End stack walk. |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1730 | } |
| 1731 | uint32_t dex_pc = DexFile::kDexNoIndex; |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1732 | if (method->IsRuntimeMethod()) { |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1733 | // ignore callee save method |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1734 | DCHECK(method->IsCalleeSaveMethod()); |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1735 | } else if (method->IsNative()) { |
| 1736 | native_method_count_++; |
| 1737 | } else { |
jeffhao | 0791adc | 2012-04-04 11:14:32 -0700 | [diff] [blame] | 1738 | // Unwind stack when an exception occurs during method tracing |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1739 | if (UNLIKELY(method_tracing_active_)) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 1740 | #if !defined(ART_USE_LLVM_COMPILER) |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1741 | if (IsTraceExitPc(DemanglePc(pc))) { |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1742 | pc = ManglePc(TraceMethodUnwindFromCode(Thread::Current())); |
| 1743 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 1744 | #else |
| 1745 | UNIMPLEMENTED(FATAL); |
| 1746 | #endif |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1747 | } |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1748 | dex_pc = method->ToDexPC(pc); |
| 1749 | } |
| 1750 | if (dex_pc != DexFile::kDexNoIndex) { |
| 1751 | uint32_t found_dex_pc = method->FindCatchBlock(to_find_, dex_pc); |
| 1752 | if (found_dex_pc != DexFile::kDexNoIndex) { |
| 1753 | handler_pc_ = method->ToNativePC(found_dex_pc); |
| 1754 | handler_frame_ = fr; |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1755 | return false; // End stack walk. |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1756 | } |
| 1757 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 1758 | #if !defined(ART_USE_LLVM_COMPILER) |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1759 | // Caller may be handler, fill in callee saves in context |
| 1760 | long_jump_context_->FillCalleeSaves(fr); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 1761 | #endif |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1762 | return true; // Continue stack walk. |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1763 | } |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1764 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1765 | // The type of the exception catch block to find |
| 1766 | Class* to_find_; |
| 1767 | // Frame with found handler or last frame if no handler found |
| 1768 | Frame handler_frame_; |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1769 | // PC to branch to for the handler |
| 1770 | uintptr_t handler_pc_; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1771 | // Context that will be the target of the long jump |
| 1772 | Context* long_jump_context_; |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1773 | // Number of native methods passed in crawl (equates to number of SIRTs to pop) |
| 1774 | uint32_t native_method_count_; |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 1775 | // Is method tracing active? |
| 1776 | const bool method_tracing_active_; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1777 | }; |
| 1778 | |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1779 | void Thread::DeliverException() { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 1780 | #if !defined(ART_USE_LLVM_COMPILER) |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1781 | const bool kDebugExceptionDelivery = false; |
Elliott Hughes | d07986f | 2011-12-06 18:27:45 -0800 | [diff] [blame] | 1782 | Throwable* exception = GetException(); // Get exception from thread |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1783 | CHECK(exception != NULL); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1784 | // 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] | 1785 | // resolution. |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1786 | ClearException(); |
| 1787 | if (kDebugExceptionDelivery) { |
Ian Rogers | a32a6fd | 2012-02-06 20:18:44 -0800 | [diff] [blame] | 1788 | String* msg = exception->GetDetailMessage(); |
| 1789 | std::string str_msg(msg != NULL ? msg->ToModifiedUtf8() : ""); |
| 1790 | DumpStack(LOG(INFO) << "Delivering exception: " << PrettyTypeOf(exception) |
Elliott Hughes | c073b07 | 2012-05-24 19:29:17 -0700 | [diff] [blame^] | 1791 | << ": " << str_msg << "\n"); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1792 | } |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1793 | |
| 1794 | Context* long_jump_context = GetLongJumpContext(); |
| 1795 | CatchBlockStackVisitor catch_finder(exception->GetClass(), long_jump_context); |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1796 | WalkStack(&catch_finder, true); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1797 | |
Elliott Hughes | d07986f | 2011-12-06 18:27:45 -0800 | [diff] [blame] | 1798 | Method** sp; |
| 1799 | uintptr_t throw_native_pc; |
| 1800 | Method* throw_method = GetCurrentMethod(&throw_native_pc, &sp); |
| 1801 | uintptr_t catch_native_pc = catch_finder.handler_pc_; |
| 1802 | Method* catch_method = catch_finder.handler_frame_.GetMethod(); |
| 1803 | Dbg::PostException(sp, throw_method, throw_native_pc, catch_method, catch_native_pc, exception); |
| 1804 | |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1805 | if (kDebugExceptionDelivery) { |
Elliott Hughes | d07986f | 2011-12-06 18:27:45 -0800 | [diff] [blame] | 1806 | if (catch_method == NULL) { |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1807 | LOG(INFO) << "Handler is upcall"; |
| 1808 | } else { |
| 1809 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 1810 | const DexFile& dex_file = |
Elliott Hughes | d07986f | 2011-12-06 18:27:45 -0800 | [diff] [blame] | 1811 | class_linker->FindDexFile(catch_method->GetDeclaringClass()->GetDexCache()); |
| 1812 | int line_number = dex_file.GetLineNumFromPC(catch_method, |
| 1813 | catch_method->ToDexPC(catch_finder.handler_pc_)); |
| 1814 | LOG(INFO) << "Handler: " << PrettyMethod(catch_method) << " (line: " << line_number << ")"; |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1815 | } |
| 1816 | } |
| 1817 | SetException(exception); |
Ian Rogers | 9a8a888 | 2012-03-08 02:30:55 -0800 | [diff] [blame] | 1818 | CHECK_NE(catch_native_pc, 0u); |
Elliott Hughes | d07986f | 2011-12-06 18:27:45 -0800 | [diff] [blame] | 1819 | 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] | 1820 | long_jump_context->SetPC(catch_native_pc); |
Elliott Hughes | 9c750f9 | 2012-04-05 12:07:59 -0700 | [diff] [blame] | 1821 | long_jump_context->SmashCallerSaves(); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1822 | long_jump_context->DoLongJump(); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 1823 | #endif |
Ian Rogers | 9a8a888 | 2012-03-08 02:30:55 -0800 | [diff] [blame] | 1824 | LOG(FATAL) << "UNREACHABLE"; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1825 | } |
| 1826 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1827 | Context* Thread::GetLongJumpContext() { |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 1828 | Context* result = long_jump_context_; |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 1829 | #if !defined(ART_USE_LLVM_COMPILER) |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1830 | if (result == NULL) { |
| 1831 | result = Context::Create(); |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 1832 | long_jump_context_ = result; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1833 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 1834 | #endif |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1835 | return result; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1836 | } |
| 1837 | |
TDYa127 | ee0d3fb | 2012-04-01 14:55:33 -0700 | [diff] [blame] | 1838 | #if !defined(ART_USE_LLVM_COMPILER) |
Elliott Hughes | d07986f | 2011-12-06 18:27:45 -0800 | [diff] [blame] | 1839 | Method* Thread::GetCurrentMethod(uintptr_t* pc, Method*** sp) const { |
| 1840 | Frame f = top_of_managed_stack_; |
| 1841 | Method* m = f.GetMethod(); |
Elliott Hughes | 8be2d40 | 2012-02-23 14:22:41 -0800 | [diff] [blame] | 1842 | uintptr_t native_pc = top_of_managed_stack_pc_; |
| 1843 | |
Elliott Hughes | 9fd66f5 | 2011-10-16 12:13:26 -0700 | [diff] [blame] | 1844 | // We use JNI internally for exception throwing, so it's possible to arrive |
| 1845 | // here via a "FromCode" function, in which case there's a synthetic |
| 1846 | // callee-save method at the top of the stack. These shouldn't be user-visible, |
| 1847 | // so if we find one, skip it and return the compiled method underneath. |
jeffhao | 33dc771 | 2011-11-09 17:54:24 -0800 | [diff] [blame] | 1848 | if (m != NULL && m->IsCalleeSaveMethod()) { |
Elliott Hughes | 8be2d40 | 2012-02-23 14:22:41 -0800 | [diff] [blame] | 1849 | native_pc = f.GetReturnPC(); |
Elliott Hughes | 9fd66f5 | 2011-10-16 12:13:26 -0700 | [diff] [blame] | 1850 | f.Next(); |
| 1851 | m = f.GetMethod(); |
| 1852 | } |
Elliott Hughes | d07986f | 2011-12-06 18:27:45 -0800 | [diff] [blame] | 1853 | if (pc != NULL) { |
Elliott Hughes | 8be2d40 | 2012-02-23 14:22:41 -0800 | [diff] [blame] | 1854 | *pc = (m != NULL) ? ManglePc(native_pc) : 0; |
jeffhao | 33dc771 | 2011-11-09 17:54:24 -0800 | [diff] [blame] | 1855 | } |
Elliott Hughes | d07986f | 2011-12-06 18:27:45 -0800 | [diff] [blame] | 1856 | if (sp != NULL) { |
| 1857 | *sp = f.GetSP(); |
| 1858 | } |
| 1859 | return m; |
jeffhao | 33dc771 | 2011-11-09 17:54:24 -0800 | [diff] [blame] | 1860 | } |
TDYa127 | ee0d3fb | 2012-04-01 14:55:33 -0700 | [diff] [blame] | 1861 | #else |
| 1862 | Method* Thread::GetCurrentMethod(uintptr_t*, Method***) const { |
| 1863 | ShadowFrame* frame = top_shadow_frame_; |
TDYa127 | 20efe54 | 2012-04-03 17:40:49 -0700 | [diff] [blame] | 1864 | if (frame == NULL) { |
| 1865 | return NULL; |
TDYa127 | ee0d3fb | 2012-04-01 14:55:33 -0700 | [diff] [blame] | 1866 | } |
| 1867 | return frame->GetMethod(); |
| 1868 | } |
| 1869 | #endif |
jeffhao | 33dc771 | 2011-11-09 17:54:24 -0800 | [diff] [blame] | 1870 | |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 1871 | bool Thread::HoldsLock(Object* object) { |
| 1872 | if (object == NULL) { |
| 1873 | return false; |
| 1874 | } |
Brian Carlstrom | 24a3c2e | 2011-10-17 18:07:52 -0700 | [diff] [blame] | 1875 | return object->GetThinLockId() == thin_lock_id_; |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 1876 | } |
| 1877 | |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 1878 | bool Thread::IsDaemon() { |
| 1879 | return gThread_daemon->GetBoolean(peer_); |
| 1880 | } |
| 1881 | |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 1882 | #if !defined(ART_USE_LLVM_COMPILER) |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1883 | class ReferenceMapVisitor : public Thread::StackVisitor { |
| 1884 | public: |
| 1885 | ReferenceMapVisitor(Context* context, Heap::RootVisitor* root_visitor, void* arg) : |
| 1886 | context_(context), root_visitor_(root_visitor), arg_(arg) { |
| 1887 | } |
| 1888 | |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1889 | bool VisitFrame(const Frame& frame, uintptr_t pc) { |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1890 | Method* m = frame.GetMethod(); |
Brian Carlstrom | 6a4be3a | 2011-10-20 16:34:03 -0700 | [diff] [blame] | 1891 | if (false) { |
jeffhao | 2504552 | 2012-03-13 19:34:37 -0700 | [diff] [blame] | 1892 | LOG(INFO) << "Visiting stack roots in " << PrettyMethod(m) |
Brian Carlstrom | 0dd7dda | 2011-10-25 15:47:53 -0700 | [diff] [blame] | 1893 | << StringPrintf("@ PC:%04x", m->ToDexPC(pc)); |
Brian Carlstrom | 6a4be3a | 2011-10-20 16:34:03 -0700 | [diff] [blame] | 1894 | } |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1895 | // Process register map (which native and callee save methods don't have) |
Ian Rogers | 3891c77 | 2011-12-06 15:38:28 -0800 | [diff] [blame] | 1896 | if (!m->IsNative() && !m->IsCalleeSaveMethod() && !m->IsProxyMethod()) { |
Brian Carlstrom | e7d856b | 2012-01-11 18:10:55 -0800 | [diff] [blame] | 1897 | CHECK(m->GetGcMap() != NULL) << PrettyMethod(m); |
| 1898 | CHECK_NE(0U, m->GetGcMapLength()) << PrettyMethod(m); |
| 1899 | verifier::PcToReferenceMap map(m->GetGcMap(), m->GetGcMapLength()); |
Ian Rogers | d81871c | 2011-10-03 13:57:23 -0700 | [diff] [blame] | 1900 | const uint8_t* reg_bitmap = map.FindBitMap(m->ToDexPC(pc)); |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1901 | CHECK(reg_bitmap != NULL); |
Elliott Hughes | 68fdbd0 | 2011-11-29 19:22:47 -0800 | [diff] [blame] | 1902 | const VmapTable vmap_table(m->GetVmapTableRaw()); |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame] | 1903 | const DexFile::CodeItem* code_item = MethodHelper(m).GetCodeItem(); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1904 | DCHECK(code_item != NULL); // can't be NULL or how would we compile its instructions? |
| 1905 | uint32_t core_spills = m->GetCoreSpillMask(); |
| 1906 | uint32_t fp_spills = m->GetFpSpillMask(); |
| 1907 | size_t frame_size = m->GetFrameSizeInBytes(); |
Brian Carlstrom | 0dd7dda | 2011-10-25 15:47:53 -0700 | [diff] [blame] | 1908 | // For all dex registers in the bitmap |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1909 | size_t num_regs = std::min(map.RegWidth() * 8, |
| 1910 | static_cast<size_t>(code_item->registers_size_)); |
Brian Carlstrom | 0dd7dda | 2011-10-25 15:47:53 -0700 | [diff] [blame] | 1911 | for (size_t reg = 0; reg < num_regs; ++reg) { |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1912 | // Does this register hold a reference? |
| 1913 | if (TestBitmap(reg, reg_bitmap)) { |
Elliott Hughes | 68fdbd0 | 2011-11-29 19:22:47 -0800 | [diff] [blame] | 1914 | uint32_t vmap_offset; |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1915 | Object* ref; |
Elliott Hughes | 68fdbd0 | 2011-11-29 19:22:47 -0800 | [diff] [blame] | 1916 | if (vmap_table.IsInContext(reg, vmap_offset)) { |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1917 | // Compute the register we need to load from the context |
| 1918 | uint32_t spill_mask = m->GetCoreSpillMask(); |
Brian Carlstrom | 0dd7dda | 2011-10-25 15:47:53 -0700 | [diff] [blame] | 1919 | CHECK_LT(vmap_offset, static_cast<uint32_t>(__builtin_popcount(spill_mask))); |
Ian Rogers | f57c47c | 2011-10-06 00:06:17 -0700 | [diff] [blame] | 1920 | uint32_t matches = 0; |
| 1921 | uint32_t spill_shifts = 0; |
| 1922 | while (matches != (vmap_offset + 1)) { |
Brian Carlstrom | 0dd7dda | 2011-10-25 15:47:53 -0700 | [diff] [blame] | 1923 | DCHECK_NE(spill_mask, 0u); |
Ian Rogers | f57c47c | 2011-10-06 00:06:17 -0700 | [diff] [blame] | 1924 | matches += spill_mask & 1; // Add 1 if the low bit is set |
| 1925 | spill_mask >>= 1; |
| 1926 | spill_shifts++; |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1927 | } |
Ian Rogers | f57c47c | 2011-10-06 00:06:17 -0700 | [diff] [blame] | 1928 | spill_shifts--; // wind back one as we want the last match |
| 1929 | ref = reinterpret_cast<Object*>(context_->GetGPR(spill_shifts)); |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1930 | } else { |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1931 | ref = reinterpret_cast<Object*>(frame.GetVReg(code_item, core_spills, fp_spills, |
| 1932 | frame_size, reg)); |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1933 | } |
Shih-wei Liao | 4f894e3 | 2011-09-27 21:33:19 -0700 | [diff] [blame] | 1934 | if (ref != NULL) { |
| 1935 | root_visitor_(ref, arg_); |
| 1936 | } |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1937 | } |
| 1938 | } |
| 1939 | } |
| 1940 | context_->FillCalleeSaves(frame); |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1941 | return true; |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1942 | } |
| 1943 | |
| 1944 | private: |
| 1945 | bool TestBitmap(int reg, const uint8_t* reg_vector) { |
| 1946 | return ((reg_vector[reg / 8] >> (reg % 8)) & 0x01) != 0; |
| 1947 | } |
| 1948 | |
| 1949 | // Context used to build up picture of callee saves |
| 1950 | Context* context_; |
| 1951 | // Call-back when we visit a root |
| 1952 | Heap::RootVisitor* root_visitor_; |
| 1953 | // Argument to call-back |
| 1954 | void* arg_; |
| 1955 | }; |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 1956 | #endif |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1957 | |
| 1958 | void Thread::VisitRoots(Heap::RootVisitor* visitor, void* arg) { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1959 | if (exception_ != NULL) { |
| 1960 | visitor(exception_, arg); |
| 1961 | } |
| 1962 | if (peer_ != NULL) { |
| 1963 | visitor(peer_, arg); |
| 1964 | } |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1965 | if (pre_allocated_OutOfMemoryError_ != NULL) { |
| 1966 | visitor(pre_allocated_OutOfMemoryError_, arg); |
| 1967 | } |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1968 | if (class_loader_override_ != NULL) { |
| 1969 | visitor(class_loader_override_, arg); |
| 1970 | } |
Elliott Hughes | 410c0c8 | 2011-09-01 17:58:25 -0700 | [diff] [blame] | 1971 | jni_env_->locals.VisitRoots(visitor, arg); |
| 1972 | jni_env_->monitors.VisitRoots(visitor, arg); |
Shih-wei Liao | 8dfc9d5 | 2011-09-28 18:06:15 -0700 | [diff] [blame] | 1973 | |
| 1974 | SirtVisitRoots(visitor, arg); |
Logan Chien | f7ad17e | 2012-03-15 03:10:03 +0800 | [diff] [blame] | 1975 | ShadowFrameVisitRoots(visitor, arg); |
Shih-wei Liao | 8dfc9d5 | 2011-09-28 18:06:15 -0700 | [diff] [blame] | 1976 | |
TDYa127 | 540a5b7 | 2012-04-03 18:56:08 -0700 | [diff] [blame] | 1977 | #if !defined(ART_USE_LLVM_COMPILER) |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1978 | // Cheat and steal the long jump context. Assume that we are not doing a GC during exception |
| 1979 | // delivery. |
| 1980 | Context* context = GetLongJumpContext(); |
| 1981 | // Visit roots on this thread's stack |
| 1982 | ReferenceMapVisitor mapper(context, visitor, arg); |
| 1983 | WalkStack(&mapper); |
TDYa127 | 540a5b7 | 2012-04-03 18:56:08 -0700 | [diff] [blame] | 1984 | #endif |
Elliott Hughes | 410c0c8 | 2011-09-01 17:58:25 -0700 | [diff] [blame] | 1985 | } |
| 1986 | |
jeffhao | 2504552 | 2012-03-13 19:34:37 -0700 | [diff] [blame] | 1987 | #if VERIFY_OBJECT_ENABLED |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 1988 | static void VerifyObject(const Object* obj, void*) { |
jeffhao | 2504552 | 2012-03-13 19:34:37 -0700 | [diff] [blame] | 1989 | Runtime::Current()->GetHeap()->VerifyObject(obj); |
| 1990 | } |
| 1991 | |
| 1992 | void Thread::VerifyStack() { |
TDYa127 | 540a5b7 | 2012-04-03 18:56:08 -0700 | [diff] [blame] | 1993 | #if !defined(ART_USE_LLVM_COMPILER) |
jeffhao | e66ac79 | 2012-03-19 16:08:46 -0700 | [diff] [blame] | 1994 | UniquePtr<Context> context(Context::Create()); |
| 1995 | ReferenceMapVisitor mapper(context.get(), VerifyObject, NULL); |
jeffhao | 2504552 | 2012-03-13 19:34:37 -0700 | [diff] [blame] | 1996 | WalkStack(&mapper); |
TDYa127 | 540a5b7 | 2012-04-03 18:56:08 -0700 | [diff] [blame] | 1997 | #endif |
jeffhao | 2504552 | 2012-03-13 19:34:37 -0700 | [diff] [blame] | 1998 | } |
| 1999 | #endif |
| 2000 | |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 2001 | std::ostream& operator<<(std::ostream& os, const Thread& thread) { |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 2002 | thread.Dump(os, false); |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 2003 | return os; |
| 2004 | } |
| 2005 | |
Elliott Hughes | a4060e5 | 2012-03-02 16:51:35 -0800 | [diff] [blame] | 2006 | void Thread::CheckSafeToLockOrUnlock(MutexRank rank, bool is_locking) { |
Elliott Hughes | 17057b1 | 2012-04-03 10:22:39 -0700 | [diff] [blame] | 2007 | if (this == NULL) { |
| 2008 | CHECK(Runtime::Current()->IsShuttingDown()); |
| 2009 | return; |
| 2010 | } |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 2011 | if (is_locking) { |
| 2012 | if (held_mutexes_[rank] == 0) { |
| 2013 | bool bad_mutexes_held = false; |
| 2014 | for (int i = kMaxMutexRank; i > rank; --i) { |
| 2015 | if (held_mutexes_[i] != 0) { |
| 2016 | LOG(ERROR) << "holding " << static_cast<MutexRank>(i) << " while " << (is_locking ? "locking" : "unlocking") << " " << rank; |
| 2017 | bad_mutexes_held = true; |
| 2018 | } |
| 2019 | } |
Elliott Hughes | b5db3bb | 2012-03-29 20:00:31 -0700 | [diff] [blame] | 2020 | CHECK(!bad_mutexes_held) << rank; |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 2021 | } |
| 2022 | ++held_mutexes_[rank]; |
| 2023 | } else { |
Elliott Hughes | b5db3bb | 2012-03-29 20:00:31 -0700 | [diff] [blame] | 2024 | CHECK_GT(held_mutexes_[rank], 0U) << rank; |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 2025 | --held_mutexes_[rank]; |
| 2026 | } |
| 2027 | } |
| 2028 | |
Elliott Hughes | a4060e5 | 2012-03-02 16:51:35 -0800 | [diff] [blame] | 2029 | void Thread::CheckSafeToWait(MutexRank rank) { |
Elliott Hughes | 17057b1 | 2012-04-03 10:22:39 -0700 | [diff] [blame] | 2030 | if (this == NULL) { |
| 2031 | CHECK(Runtime::Current()->IsShuttingDown()); |
| 2032 | return; |
| 2033 | } |
Elliott Hughes | a4060e5 | 2012-03-02 16:51:35 -0800 | [diff] [blame] | 2034 | bool bad_mutexes_held = false; |
| 2035 | for (int i = kMaxMutexRank; i >= 0; --i) { |
| 2036 | if (i != rank && held_mutexes_[i] != 0) { |
| 2037 | LOG(ERROR) << "holding " << static_cast<MutexRank>(i) << " while doing condition variable wait on " << rank; |
| 2038 | bad_mutexes_held = true; |
| 2039 | } |
| 2040 | } |
| 2041 | if (held_mutexes_[rank] == 0) { |
| 2042 | LOG(ERROR) << "*not* holding " << rank << " while doing condition variable wait on it"; |
| 2043 | bad_mutexes_held = true; |
| 2044 | } |
| 2045 | CHECK(!bad_mutexes_held); |
| 2046 | } |
| 2047 | |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 2048 | } // namespace art |