thread.h revision 81d425b0b232962441616f8b14f73620bffef5e5
18d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes/* 28d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * Copyright (C) 2011 The Android Open Source Project 38d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * 48d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * Licensed under the Apache License, Version 2.0 (the "License"); 58d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * you may not use this file except in compliance with the License. 68d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * You may obtain a copy of the License at 78d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * 88d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * http://www.apache.org/licenses/LICENSE-2.0 98d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * 108d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * Unless required by applicable law or agreed to in writing, software 118d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * distributed under the License is distributed on an "AS IS" BASIS, 128d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 138d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * See the License for the specific language governing permissions and 148d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * limitations under the License. 158d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes */ 160e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 170e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro#ifndef ART_SRC_THREAD_H_ 180e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro#define ART_SRC_THREAD_H_ 190e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 20b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro#include <pthread.h> 21a09576416788b916095739e43a16917e7948f3a4Elliott Hughes 2202b48d1dae0c3adc01ef6668226fb648fb52990aElliott Hughes#include <bitset> 23a09576416788b916095739e43a16917e7948f3a4Elliott Hughes#include <iosfwd> 24b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers#include <list> 258daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes#include <string> 26e343b76af81a005ef64f5e75a555389fd9147dabjeffhao#include <vector> 27b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 28578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "globals.h" 29578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "macros.h" 3057b86d47b66322693a070185fadfb43cb9c12eabIan Rogers#include "oat/runtime/oat_support_entrypoints.h" 3181d425b0b232962441616f8b14f73620bffef5e5Ian Rogers#include "locks.h" 32578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "offsets.h" 339d5ccec86d60c9ddd811836b9a2bc28d0b3d11feElliott Hughes#include "runtime_stats.h" 3468e76526e98432625464022cb26f66b9ef6f5af4Elliott Hughes#include "stack.h" 35e343b76af81a005ef64f5e75a555389fd9147dabjeffhao#include "trace.h" 36bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers#include "UniquePtr.h" 3721d28f510eb590f52810c83f1f3f37fe5f4adf46Shih-wei Liao#ifdef ART_USE_GREENLAND_COMPILER 3821d28f510eb590f52810c83f1f3f37fe5f4adf46Shih-wei Liao#include "greenland/runtime_entry_points.h" 3921d28f510eb590f52810c83f1f3f37fe5f4adf46Shih-wei Liao#endif 40b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 410e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapironamespace art { 420e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 4381d425b0b232962441616f8b14f73620bffef5e5Ian Rogersclass AbstractMethod; 4469f5bc6759f256a146eefd8a7141d39fcc3b0421Elliott Hughesclass Array; 4581d425b0b232962441616f8b14f73620bffef5e5Ian Rogersclass BaseMutex; 4637f7a40f6789bb287f287a9af00777af9d6428eeElliott Hughesclass Class; 471f87008b165d26541d832ff805250afdc89c253dBrian Carlstromclass ClassLinker; 48edcc09c737b00462881f147602656739d029571eElliott Hughesclass ClassLoader; 49bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogersclass Context; 501b09b094a85e03f6ef5f687f58bb91c433273ba1Ian Rogersstruct DebugInvokeReq; 5181d425b0b232962441616f8b14f73620bffef5e5Ian Rogersclass DexFile; 5281d425b0b232962441616f8b14f73620bffef5e5Ian Rogersstruct JNIEnvExt; 538daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughesclass Monitor; 540e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiroclass Object; 55b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiroclass Runtime; 5600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogersclass ScopedObjectAccess; 5700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogersclass ScopedObjectAccessUnchecked; 58f7ad17e108b9357d7c94c6218a8521140a667f3dLogan Chienclass ShadowFrame; 5968e76526e98432625464022cb26f66b9ef6f5af4Elliott Hughesclass StackIndirectReferenceTable; 6055df06be4369f5d8ab5eb61a5d22809255171036Shih-wei Liaoclass StackTraceElement; 611da522de18ac6e4c2913c3233529e9dd115059f8buzbeeclass StaticStorageBase; 6240381fb9dc4b4cf274f1e58b2cdf4396202c6189Brian Carlstromclass Thread; 6340381fb9dc4b4cf274f1e58b2cdf4396202c6189Brian Carlstromclass ThreadList; 6440381fb9dc4b4cf274f1e58b2cdf4396202c6189Brian Carlstromclass Throwable; 651da522de18ac6e4c2913c3233529e9dd115059f8buzbee 6655df06be4369f5d8ab5eb61a5d22809255171036Shih-wei Liaotemplate<class T> class ObjectArray; 674417536522fd2a9d8215d8672331984769c9520bShih-wei Liaotemplate<class T> class PrimitiveArray; 684417536522fd2a9d8215d8672331984769c9520bShih-wei Liaotypedef PrimitiveArray<int32_t> IntArray; 690e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 7034e069606d6f1698cd3c33b39e72b79ae27e1c7bElliott Hughes// Thread priorities. These must match the Thread.MIN_PRIORITY, 7134e069606d6f1698cd3c33b39e72b79ae27e1c7bElliott Hughes// Thread.NORM_PRIORITY, and Thread.MAX_PRIORITY constants. 7234e069606d6f1698cd3c33b39e72b79ae27e1c7bElliott Hughesenum ThreadPriority { 7334e069606d6f1698cd3c33b39e72b79ae27e1c7bElliott Hughes kMinThreadPriority = 1, 7434e069606d6f1698cd3c33b39e72b79ae27e1c7bElliott Hughes kNormThreadPriority = 5, 7534e069606d6f1698cd3c33b39e72b79ae27e1c7bElliott Hughes kMaxThreadPriority = 10, 7634e069606d6f1698cd3c33b39e72b79ae27e1c7bElliott Hughes}; 77fc1d9f581592d54cc14240b9909824af38656931Elliott Hughes 7834e069606d6f1698cd3c33b39e72b79ae27e1c7bElliott Hughesenum ThreadState { 7900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers kTerminated = 0, // Thread.TERMINATED JDWP TS_ZOMBIE 8000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers kRunnable = 1, // Thread.RUNNABLE JDWP TS_RUNNING 8100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers kTimedWaiting = 2, // Thread.TIMED_WAITING JDWP TS_WAIT - in Object.wait() with a timeout 8200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers kBlocked = 3, // Thread.BLOCKED JDWP TS_MONITOR - blocked on a monitor 8300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers kWaiting = 4, // Thread.WAITING JDWP TS_WAIT - in Object.wait() 8400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers kWaitingForGcToComplete = 5, // Thread.WAITING JDWP TS_WAIT - blocked waiting for GC 8500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers kWaitingPerformingGc = 6, // Thread.WAITING JDWP TS_WAIT - performing GC 8600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers kWaitingForDebuggerSend = 7, // Thread.WAITING JDWP TS_WAIT - blocked waiting for events to be sent 8700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers kWaitingForDebuggerToAttach = 8, // Thread.WAITING JDWP TS_WAIT - blocked waiting for debugger to attach 8800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers kWaitingInMainDebuggerLoop = 9, // Thread.WAITING JDWP TS_WAIT - blocking/reading/processing debugger events 8900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers kWaitingForDebuggerSuspension = 10, // Thread.WAITING JDWP TS_WAIT - waiting for debugger suspend all 9000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers kWaitingForJniOnLoad = 11, // Thread.WAITING JDWP TS_WAIT - waiting for execution of dlopen and JNI on load code 9100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers kWaitingForSignalCatcherOutput = 12, // Thread.WAITING JDWP TS_WAIT - waiting for signal catcher IO to complete 9200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers kWaitingInMainSignalCatcherLoop = 13, // Thread.WAITING JDWP TS_WAIT - blocking/reading/processing signals 9300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers kStarting = 14, // Thread.NEW JDWP TS_WAIT - native thread started, not yet ready to run managed code 9400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers kNative = 15, // Thread.RUNNABLE JDWP TS_RUNNING - running in a JNI native method 9500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers kSuspended = 16, // Thread.RUNNABLE JDWP TS_RUNNING - suspended by GC or debugger 9634e069606d6f1698cd3c33b39e72b79ae27e1c7bElliott Hughes}; 97b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 98474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogersenum ThreadFlag { 99474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers kSuspendRequest = 1, // If set implies that suspend_count_ > 0. 100474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers kExceptionPending = 2, // If set implies that exception_ != NULL. 101474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers kEnterInterpreter = 4, // Instruct managed code it should enter the interpreter. 102474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers}; 103474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers 10434e069606d6f1698cd3c33b39e72b79ae27e1c7bElliott Hughesclass PACKED Thread { 10534e069606d6f1698cd3c33b39e72b79ae27e1c7bElliott Hughes public: 106932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers // Space to throw a StackOverflowError in. 1074165a83d250165c839850651e1b2a69e06128000TDYa#if !defined(ART_USE_LLVM_COMPILER) 108aded5f7ab991f3c1132851599d3bc60ff6707eedBrian Carlstrom static const size_t kStackOverflowReservedBytes = 4 * KB; 1094165a83d250165c839850651e1b2a69e06128000TDYa#else // LLVM_x86 requires more memory to throw stack overflow exception. 1104165a83d250165c839850651e1b2a69e06128000TDYa static const size_t kStackOverflowReservedBytes = 8 * KB; 1114165a83d250165c839850651e1b2a69e06128000TDYa#endif 112c143c55718342519db5398e41dda31422cf16c79buzbee 113462c94449720e0dc6b93d7138d835d345ccf67aeElliott Hughes // Creates a new native thread corresponding to the given managed peer. 114462c94449720e0dc6b93d7138d835d345ccf67aeElliott Hughes // Used to implement Thread.start. 11552673ffae0025d86f4023735581f19ebcc477487Ian Rogers static void CreateNativeThread(JNIEnv* env, jobject peer, size_t stack_size, bool daemon); 11661e019d291583029c01b61b93bea750f2b663c37Carl Shapiro 117462c94449720e0dc6b93d7138d835d345ccf67aeElliott Hughes // Attaches the calling native thread to the runtime, returning the new native peer. 118462c94449720e0dc6b93d7138d835d345ccf67aeElliott Hughes // Used to implement JNI AttachCurrentThread and AttachCurrentThreadAsDaemon calls. 119365c10235438607541fa2259a5fec48061b90bd8Ian Rogers static Thread* Attach(const char* thread_name, bool as_daemon, jobject thread_group); 120b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 121caabb1b77b4a55eb1bb45ebcd3071c9ea01dd3cfBrian Carlstrom // Reset internal state of child thread after fork. 122caabb1b77b4a55eb1bb45ebcd3071c9ea01dd3cfBrian Carlstrom void InitAfterFork(); 123caabb1b77b4a55eb1bb45ebcd3071c9ea01dd3cfBrian Carlstrom 1240399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers static Thread* Current() __attribute__ ((pure)) { 125e0447357fa8dece635c213d360cd03160cc2d8a0Elliott Hughes // We rely on Thread::Current returning NULL for a detached thread, so it's not obvious 126e0447357fa8dece635c213d360cd03160cc2d8a0Elliott Hughes // that we can replace this with a direct %fs access on x86. 127d0e7e777c412071a911dd2c008b20b7d879fd392Carl Shapiro void* thread = pthread_getspecific(Thread::pthread_key_self_); 128d0e7e777c412071a911dd2c008b20b7d879fd392Carl Shapiro return reinterpret_cast<Thread*>(thread); 1290e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 1300e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 13100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers static Thread* FromManagedThread(const ScopedObjectAccessUnchecked& ts, Object* thread_peer) 132b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 133b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 13400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers static Thread* FromManagedThread(const ScopedObjectAccessUnchecked& ts, jobject thread) 135b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 136b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 1378daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes 13828fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes // Translates 172 to pAllocArrayFromCode and so on. 13928fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes static void DumpThreadOffset(std::ostream& os, uint32_t offset, size_t size_of_pointers); 14028fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes 14100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Dumps a one-line summary of thread state (used for operator<<). 14200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void ShortDump(std::ostream& os) const; 14300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 14400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Dumps the detailed thread state and the thread stack (used for SIGQUIT). 14500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void Dump(std::ostream& os) const 146b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 147b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 148a09576416788b916095739e43a16917e7948f3a4Elliott Hughes 149abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes // Dumps the SIGQUIT per-thread header. 'thread' can be NULL for a non-attached thread, in which 150abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes // case we use 'tid' to identify the thread, and we'll include as much information as we can. 15100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers static void DumpState(std::ostream& os, const Thread* thread, pid_t tid) 152b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_); 153abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes 154474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers ThreadState GetState() const { 15530e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers return static_cast<ThreadState>(state_and_flags_.as_struct.state); 1560cfe1fb7060576d047f7f894fc0d8b87de84fcabIan Rogers } 1570cfe1fb7060576d047f7f894fc0d8b87de84fcabIan Rogers 158474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers ThreadState SetState(ThreadState new_state); 1598d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes 16081d425b0b232962441616f8b14f73620bffef5e5Ian Rogers int GetSuspendCount() const EXCLUSIVE_LOCKS_REQUIRED(Locks::thread_suspend_count_lock_) { 16100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers return suspend_count_; 16252673ffae0025d86f4023735581f19ebcc477487Ian Rogers } 16352673ffae0025d86f4023735581f19ebcc477487Ian Rogers 16481d425b0b232962441616f8b14f73620bffef5e5Ian Rogers int GetDebugSuspendCount() const EXCLUSIVE_LOCKS_REQUIRED(Locks::thread_suspend_count_lock_) { 16500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers return debug_suspend_count_; 16600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 16700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 16881d425b0b232962441616f8b14f73620bffef5e5Ian Rogers bool IsSuspended() const EXCLUSIVE_LOCKS_REQUIRED(Locks::thread_suspend_count_lock_) { 16981d425b0b232962441616f8b14f73620bffef5e5Ian Rogers return GetState() != kRunnable && ReadFlag(kSuspendRequest); 17000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 17100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 17200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void ModifySuspendCount(int delta, bool for_debugger) 173b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers EXCLUSIVE_LOCKS_REQUIRED(Locks::thread_suspend_count_lock_); 17400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 17500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Called when thread detected that the thread_suspend_count_ was non-zero. Gives up share of 17600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // mutator_lock_ and waits until it is resumed and thread_suspend_count_ is zero. 1779da7f59c9059397182b9a97e898a42ec06d4d646Ian Rogers void FullSuspendCheck() 178b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 179b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 18000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 18100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Transition from non-runnable to runnable state acquiring share on mutator_lock_. 18200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers ThreadState TransitionFromSuspendedToRunnable() 183b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 184b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCK_FUNCTION(Locks::mutator_lock_); 18500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 18600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Transition from runnable into a state where mutator privileges are denied. Releases share of 18700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // mutator lock. 18800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void TransitionFromRunnableToSuspended(ThreadState new_state) 189b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 190b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers UNLOCK_FUNCTION(Locks::mutator_lock_); 191038a806df72f884d22283a84a31c9a1d35ba1fdfElliott Hughes 19200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Wait for a debugger suspension on the thread associated with the given peer. Returns the 19300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // thread on success, else NULL. If the thread should be suspended then request_suspension should 19400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // be true on entry. If the suspension times out then *timeout is set to true. 19500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers static Thread* SuspendForDebugger(jobject peer, bool request_suspension, bool* timeout) 196b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::mutator_lock_, 197b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers Locks::thread_list_lock_, 198b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers Locks::thread_suspend_count_lock_); 1990cfe1fb7060576d047f7f894fc0d8b87de84fcabIan Rogers 2000399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Once called thread suspension will cause an assertion failure. 2010399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers#ifndef NDEBUG 20252673ffae0025d86f4023735581f19ebcc477487Ian Rogers const char* StartAssertNoThreadSuspension(const char* cause) { 20352673ffae0025d86f4023735581f19ebcc477487Ian Rogers CHECK(cause != NULL); 20452673ffae0025d86f4023735581f19ebcc477487Ian Rogers const char* previous_cause = last_no_thread_suspension_cause_; 2050399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers no_thread_suspension_++; 20652673ffae0025d86f4023735581f19ebcc477487Ian Rogers last_no_thread_suspension_cause_ = cause; 20752673ffae0025d86f4023735581f19ebcc477487Ian Rogers return previous_cause; 2080399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 20952673ffae0025d86f4023735581f19ebcc477487Ian Rogers#else 21052673ffae0025d86f4023735581f19ebcc477487Ian Rogers const char* StartAssertNoThreadSuspension(const char* cause) { 21152673ffae0025d86f4023735581f19ebcc477487Ian Rogers CHECK(cause != NULL); 21252673ffae0025d86f4023735581f19ebcc477487Ian Rogers return NULL; 21352673ffae0025d86f4023735581f19ebcc477487Ian Rogers } 21452673ffae0025d86f4023735581f19ebcc477487Ian Rogers#endif 21552673ffae0025d86f4023735581f19ebcc477487Ian Rogers 2160399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // End region where no thread suspension is expected. 2170399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers#ifndef NDEBUG 21852673ffae0025d86f4023735581f19ebcc477487Ian Rogers void EndAssertNoThreadSuspension(const char* old_cause) { 21952673ffae0025d86f4023735581f19ebcc477487Ian Rogers CHECK(old_cause != NULL || no_thread_suspension_ == 1); 22052673ffae0025d86f4023735581f19ebcc477487Ian Rogers CHECK_GT(no_thread_suspension_, 0U); 2210399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers no_thread_suspension_--; 22252673ffae0025d86f4023735581f19ebcc477487Ian Rogers last_no_thread_suspension_cause_ = old_cause; 22352673ffae0025d86f4023735581f19ebcc477487Ian Rogers } 22452673ffae0025d86f4023735581f19ebcc477487Ian Rogers#else 22552673ffae0025d86f4023735581f19ebcc477487Ian Rogers void EndAssertNoThreadSuspension(const char*) { 2260399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 22752673ffae0025d86f4023735581f19ebcc477487Ian Rogers#endif 2280399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 22900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 23000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers#ifndef NDEBUG 23100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void AssertThreadSuspensionIsAllowable(bool check_locks = true) const; 23200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers#else 23300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void AssertThreadSuspensionIsAllowable(bool check_locks = true) const { 234e0f0cb3d855cb5e926452b5e1ec8457adc4e454eMathieu Chartier UNUSED(check_locks); // Keep GCC happy about unused parameters. 2350399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 23600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers#endif 2370399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 23800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers bool IsDaemon() const { 23900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers return daemon_; 24000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 24100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 2425f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes bool HoldsLock(Object*); 2435f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes 2448daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes /* 2458daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * Changes the priority of this thread to match that of the java.lang.Thread object. 2468daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * 2478daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * We map a priority value from 1-10 to Linux "nice" values, where lower 2488daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * numbers indicate higher priority. 2498daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes */ 2508daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes void SetNativePriority(int newPriority); 2518daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes 2528daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes /* 2538daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * Returns the thread priority for the current thread by querying the system. 2548daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * This is useful when attaching a thread through JNI. 2558daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * 2568daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * Returns a value from 1 to 10 (compatible with java.lang.Thread values). 2578daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes */ 2588daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes static int GetNativePriority(); 2598daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes 260dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes uint32_t GetThinLockId() const { 261dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes return thin_lock_id_; 262b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 263b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 264d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes pid_t GetTid() const { 265d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes return tid_; 266d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes } 267e27955ca3ca960928d4dbd6cb79711fce06950b3Elliott Hughes 268ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes // Returns the java.lang.Thread's name, or NULL if this Thread* doesn't have a peer. 26900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers String* GetThreadName(const ScopedObjectAccessUnchecked& ts) const 270b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 271899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughes 272ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes // Sets 'name' to the java.lang.Thread's name. This requires no transition to managed code, 273ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes // allocation, or locking. 274ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes void GetThreadName(std::string& name) const; 275ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes 276899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughes // Sets the thread's name. 277b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers void SetThreadName(const char* name) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 278fc86162ce2a3467acb690e18cc8bd9b3daafc606Elliott Hughes 279dbe6f4613ae0161b169f4fca8a616b0b393370abMathieu Chartier jobject GetPeer() const { 2808daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes return peer_; 2818daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes } 2828daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes 28300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers bool HasPeer() const { 28400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers return peer_ != NULL; 28500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 28600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 28700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers Object* GetThreadGroup(const ScopedObjectAccessUnchecked& ts) const 288b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 289a215526d5c789cbef0f81a1f9aba22541a841ccaElliott Hughes 2909d5ccec86d60c9ddd811836b9a2bc28d0b3d11feElliott Hughes RuntimeStats* GetStats() { 2919d5ccec86d60c9ddd811836b9a2bc28d0b3d11feElliott Hughes return &stats_; 2929d5ccec86d60c9ddd811836b9a2bc28d0b3d11feElliott Hughes } 2939d5ccec86d60c9ddd811836b9a2bc28d0b3d11feElliott Hughes 2947dc5166ea740359d381097a7ab382c1dd404055fElliott Hughes bool IsStillStarting() const; 2957dc5166ea740359d381097a7ab382c1dd404055fElliott Hughes 2960e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro bool IsExceptionPending() const { 297474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers bool result = ReadFlag(kExceptionPending); 298474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers DCHECK_EQ(result, exception_ != NULL); 299474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers return result; 3000e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 3010e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 302b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers Throwable* GetException() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 3030e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro return exception_; 3040e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 3050e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 30600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void AssertNoPendingException() const; 30700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 308474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers void SetException(Throwable* new_exception) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 3090cfe1fb7060576d047f7f894fc0d8b87de84fcabIan Rogers CHECK(new_exception != NULL); 310474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers // TODO: DCHECK(!IsExceptionPending()); 311474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers exception_ = new_exception; 312474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers AtomicSetFlag(kExceptionPending); 313474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers DCHECK(IsExceptionPending()); 3140cfe1fb7060576d047f7f894fc0d8b87de84fcabIan Rogers } 3150cfe1fb7060576d047f7f894fc0d8b87de84fcabIan Rogers 3160cfe1fb7060576d047f7f894fc0d8b87de84fcabIan Rogers void ClearException() { 3170cfe1fb7060576d047f7f894fc0d8b87de84fcabIan Rogers exception_ = NULL; 318474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers AtomicClearFlag(kExceptionPending); 319474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers DCHECK(!IsExceptionPending()); 320a09576416788b916095739e43a16917e7948f3a4Elliott Hughes } 321a09576416788b916095739e43a16917e7948f3a4Elliott Hughes 322bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers // Find catch block and perform long jump to appropriate exception handle 323b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers void DeliverException() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 324bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 325bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers Context* GetLongJumpContext(); 3260399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers void ReleaseLongJumpContext(Context* context) { 3270399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers DCHECK(long_jump_context_ == NULL); 3280399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers long_jump_context_ = context; 3291a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao } 3301a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao 33166f19258f9728d4ffe026074d8fd429d639802faMathieu Chartier AbstractMethod* GetCurrentMethod(uint32_t* dex_pc = NULL, size_t* frame_id = NULL) const 332b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 3330399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 334bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers void SetTopOfStack(void* stack, uintptr_t pc) { 33566f19258f9728d4ffe026074d8fd429d639802faMathieu Chartier AbstractMethod** top_method = reinterpret_cast<AbstractMethod**>(stack); 3360399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers managed_stack_.SetTopQuickFrame(top_method); 3370399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers managed_stack_.SetTopQuickFramePc(pc); 3380e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 3390e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 3400399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers bool HasManagedStack() const { 3410399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return managed_stack_.GetTopQuickFrame() != NULL || managed_stack_.GetTopShadowFrame() != NULL; 342bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers } 343bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 344a4f94740f9d66b21f4bcd3a225c434aa29cfa323Elliott Hughes // If 'msg' is NULL, no detail message is set. 34500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void ThrowNewException(const char* exception_class_descriptor, const char* msg) 346b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 3475cb5ad27944efb08d4556b3c0d362302e37e832bElliott Hughes 348a4f94740f9d66b21f4bcd3a225c434aa29cfa323Elliott Hughes // If 'msg' is NULL, no detail message is set. An exception must be pending, and will be 349a4f94740f9d66b21f4bcd3a225c434aa29cfa323Elliott Hughes // used as the new exception's cause. 35000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void ThrowNewWrappedException(const char* exception_class_descriptor, const char* msg) 351b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 352a4f94740f9d66b21f4bcd3a225c434aa29cfa323Elliott Hughes 3535cb5ad27944efb08d4556b3c0d362302e37e832bElliott Hughes void ThrowNewExceptionF(const char* exception_class_descriptor, const char* fmt, ...) 35400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers __attribute__((format(printf, 3, 4))) 355b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 356a5b897eae4b6f9f9608faa9eada7ddf42bf1bfd2Elliott Hughes 35700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void ThrowNewExceptionV(const char* exception_class_descriptor, const char* fmt, va_list ap) 358b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 3594a2b41793d18d402286ae37e9de4fd392bc75a08Elliott Hughes 3602ced6a534157d5d963693346904389c19775d2daElliott Hughes // OutOfMemoryError is special, because we need to pre-allocate an instance. 3618a8b9cbe158ee13477f2381f164c519762a06fefElliott Hughes // Only the GC should call this. 36200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void ThrowOutOfMemoryError(const char* msg) 363b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 36479082e367845bbd68ec44ef2ddd1be8ef0e1550fElliott Hughes 3650399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers //QuickFrameIterator FindExceptionHandler(void* throw_pc, void** handler_pc); 3661a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao 36766f19258f9728d4ffe026074d8fd429d639802faMathieu Chartier void* FindExceptionHandlerInMethod(const AbstractMethod* method, 3681a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao void* throw_pc, 3691a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao const DexFile& dex_file, 3701a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao ClassLinker* class_linker); 371c143c55718342519db5398e41dda31422cf16c79buzbee 372be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static void Startup(); 373038a806df72f884d22283a84a31c9a1d35ba1fdfElliott Hughes static void FinishStartup(); 374c1674ed06662420213441ff2b818f2f71f9098dcElliott Hughes static void Shutdown(); 375b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 376b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // JNI methods 37769f5bc6759f256a146eefd8a7141d39fcc3b0421Elliott Hughes JNIEnvExt* GetJniEnv() const { 378b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return jni_env_; 379b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 380b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 381408f79aeb676251ba35667a64e86c20638d7cb0bIan Rogers // Convert a jobject into a Object* 38281d425b0b232962441616f8b14f73620bffef5e5Ian Rogers Object* DecodeJObject(jobject obj) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 383b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 3848daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes // Implements java.lang.Thread.interrupted. 38581d425b0b232962441616f8b14f73620bffef5e5Ian Rogers bool Interrupted(); 3868daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes // Implements java.lang.Thread.isInterrupted. 38781d425b0b232962441616f8b14f73620bffef5e5Ian Rogers bool IsInterrupted(); 38881d425b0b232962441616f8b14f73620bffef5e5Ian Rogers void Interrupt(); 38981d425b0b232962441616f8b14f73620bffef5e5Ian Rogers void Notify(); 3905f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes 391474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers ClassLoader* GetClassLoaderOverride() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 392c143c55718342519db5398e41dda31422cf16c79buzbee return class_loader_override_; 393c143c55718342519db5398e41dda31422cf16c79buzbee } 394c143c55718342519db5398e41dda31422cf16c79buzbee 395365c10235438607541fa2259a5fec48061b90bd8Ian Rogers void SetClassLoaderOverride(ClassLoader* class_loader_override) { 396c143c55718342519db5398e41dda31422cf16c79buzbee class_loader_override_ = class_loader_override; 397c143c55718342519db5398e41dda31422cf16c79buzbee } 398c143c55718342519db5398e41dda31422cf16c79buzbee 399aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers // Create the internal representation of a stack trace, that is more time 400aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers // and space efficient to compute than the StackTraceElement[] 40100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers jobject CreateInternalStackTrace(const ScopedObjectAccess& soa) const 402b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 40301158d7a57c8321370667a6045220237d16e0da8Elliott Hughes 40401158d7a57c8321370667a6045220237d16e0da8Elliott Hughes // Convert an internal stack trace representation (returned by CreateInternalStackTrace) to a 40501158d7a57c8321370667a6045220237d16e0da8Elliott Hughes // StackTraceElement[]. If output_array is NULL, a new array is created, otherwise as many 40601158d7a57c8321370667a6045220237d16e0da8Elliott Hughes // frames as will fit are written into the given array. If stack_depth is non-NULL, it's updated 40701158d7a57c8321370667a6045220237d16e0da8Elliott Hughes // with the number of valid frames in the returned array. 40801158d7a57c8321370667a6045220237d16e0da8Elliott Hughes static jobjectArray InternalStackTraceToStackTraceElementArray(JNIEnv* env, jobject internal, 40901158d7a57c8321370667a6045220237d16e0da8Elliott Hughes jobjectArray output_array = NULL, int* stack_depth = NULL); 41055df06be4369f5d8ab5eb61a5d22809255171036Shih-wei Liao 41100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void VisitRoots(Heap::RootVisitor* visitor, void* arg) 412b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 413410c0c876f326e14c176a39ba21fc4dd3f7db8abElliott Hughes 414250455229aa0cc07bbd18174efe510bd52631a99jeffhao#if VERIFY_OBJECT_ENABLED 415b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers void VerifyStack() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 416250455229aa0cc07bbd18174efe510bd52631a99jeffhao#else 417b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers void VerifyStack() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_){} 418250455229aa0cc07bbd18174efe510bd52631a99jeffhao#endif 419250455229aa0cc07bbd18174efe510bd52631a99jeffhao 420be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes // 421be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes // Offsets of various members of native Thread class, used by compiled code. 422be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes // 423be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 424be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static ThreadOffset SelfOffset() { 425be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, self_)); 426be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 427be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 428be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static ThreadOffset ExceptionOffset() { 429be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, exception_)); 430be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 431be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 43254e7df1896a4066cbb9fe6f72249829f0b8c49c6Elliott Hughes static ThreadOffset ThinLockIdOffset() { 433be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, thin_lock_id_)); 434be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 435be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 436be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static ThreadOffset CardTableOffset() { 437be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, card_table_)); 438be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 439be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 440474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers static ThreadOffset ThreadFlagsOffset() { 441474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, state_and_flags_)); 442be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 443be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 444932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers // Size of stack less any space reserved for stack overflow 445932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers size_t GetStackSize() { 44630fab40ee5a07af6b8c3b6b0e9438071695a57f4Ian Rogers return stack_size_ - (stack_end_ - stack_begin_); 447932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers } 448932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers 449932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers // Set the stack end to that to be used during a stack overflow 450b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers void SetStackEndForStackOverflow() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 451932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers 452932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers // Set the stack end to that to be used during regular execution 453932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers void ResetDefaultStackEnd() { 454932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers // Our stacks grow down, so we want stack_end_ to be near there, but reserving enough room 455932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers // to throw a StackOverflowError. 45630fab40ee5a07af6b8c3b6b0e9438071695a57f4Ian Rogers stack_end_ = stack_begin_ + kStackOverflowReservedBytes; 457932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers } 458932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers 459449b4bdf90b527ef7a42faaf087494538e62363cElliott Hughes static ThreadOffset StackEndOffset() { 460449b4bdf90b527ef7a42faaf087494538e62363cElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, stack_end_)); 461be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 462be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 463be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static ThreadOffset JniEnvOffset() { 464be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, jni_env_)); 465be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 466be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 467be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static ThreadOffset TopOfManagedStackOffset() { 4680399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, managed_stack_) + 4690399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers ManagedStack::TopQuickFrameOffset()); 470be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 471be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 472bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers static ThreadOffset TopOfManagedStackPcOffset() { 4730399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, managed_stack_) + 4740399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers ManagedStack::TopQuickFramePcOffset()); 4750399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 4760399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 4770399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers const ManagedStack* GetManagedStack() const { 4780399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return &managed_stack_; 4790399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 4800399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 4810399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Linked list recording fragments of managed stack. 4820399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers void PushManagedStackFragment(ManagedStack* fragment) { 4830399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers managed_stack_.PushManagedStackFragment(fragment); 4840399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 4850399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers void PopManagedStackFragment(const ManagedStack& fragment) { 4860399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers managed_stack_.PopManagedStackFragment(fragment); 487bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers } 488bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 4890399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers ShadowFrame* PushShadowFrame(ShadowFrame* new_top_frame) { 4900399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return managed_stack_.PushShadowFrame(new_top_frame); 491de479be99328d2113bf483e082c9ecf235a34d69TDYa } 492de479be99328d2113bf483e082c9ecf235a34d69TDYa 493de479be99328d2113bf483e082c9ecf235a34d69TDYa ShadowFrame* PopShadowFrame() { 4940399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return managed_stack_.PopShadowFrame(); 495de479be99328d2113bf483e082c9ecf235a34d69TDYa } 496f7ad17e108b9357d7c94c6218a8521140a667f3dLogan Chien 497d668a06b5dcc3b0f7f788da4d756cd4ee6f1d0faTDYa static ThreadOffset TopShadowFrameOffset() { 4980399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, managed_stack_) + 4990399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers ManagedStack::TopShadowFrameOffset()); 500d668a06b5dcc3b0f7f788da4d756cd4ee6f1d0faTDYa } 501d668a06b5dcc3b0f7f788da4d756cd4ee6f1d0faTDYa 5020399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Number of references allocated in ShadowFrames on this thread 5030399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers size_t NumShadowFrameReferences() const { 5040399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return managed_stack_.NumShadowFrameReferences(); 5050399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 5060399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 5070399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Number of references in SIRTs on this thread 5080399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers size_t NumSirtReferences(); 5090399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 5100399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Number of references allocated in SIRTs & shadow frames on this thread 5110399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers size_t NumStackReferences() { 5120399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return NumSirtReferences() + NumShadowFrameReferences(); 5130399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers }; 5140399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 5150399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Is the given obj in this thread's stack indirect reference table? 5160399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers bool SirtContains(jobject obj); 5170399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 5180399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers void SirtVisitRoots(Heap::RootVisitor* visitor, void* arg); 5190399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 52040381fb9dc4b4cf274f1e58b2cdf4396202c6189Brian Carlstrom void PushSirt(StackIndirectReferenceTable* sirt); 52140381fb9dc4b4cf274f1e58b2cdf4396202c6189Brian Carlstrom StackIndirectReferenceTable* PopSirt(); 52240381fb9dc4b4cf274f1e58b2cdf4396202c6189Brian Carlstrom 523be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static ThreadOffset TopSirtOffset() { 524be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, top_sirt_)); 525be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 526be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 527475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes DebugInvokeReq* GetInvokeReq() { 528475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes return debug_invoke_req_; 529475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes } 530475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes 531c0f0933249cf516b37717faa766e1e9808f7c1f8Elliott Hughes void SetDebuggerUpdatesEnabled(bool enabled); 532c0f0933249cf516b37717faa766e1e9808f7c1f8Elliott Hughes 5330399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers const std::vector<TraceStackFrame>* GetTraceStack() const { 5340399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return trace_stack_; 535e343b76af81a005ef64f5e75a555389fd9147dabjeffhao } 536e343b76af81a005ef64f5e75a555389fd9147dabjeffhao 5370399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers bool IsTraceStackEmpty() const { 5380399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return trace_stack_->empty(); 539a9ef3fd82bebc6370fc3ddbb094988feb6c83022jeffhao } 540a9ef3fd82bebc6370fc3ddbb094988feb6c83022jeffhao 541e343b76af81a005ef64f5e75a555389fd9147dabjeffhao void PushTraceStackFrame(const TraceStackFrame& frame) { 542e343b76af81a005ef64f5e75a555389fd9147dabjeffhao trace_stack_->push_back(frame); 543e343b76af81a005ef64f5e75a555389fd9147dabjeffhao } 544e343b76af81a005ef64f5e75a555389fd9147dabjeffhao 545e343b76af81a005ef64f5e75a555389fd9147dabjeffhao TraceStackFrame PopTraceStackFrame() { 546e343b76af81a005ef64f5e75a555389fd9147dabjeffhao TraceStackFrame frame = trace_stack_->back(); 547e343b76af81a005ef64f5e75a555389fd9147dabjeffhao trace_stack_->pop_back(); 548e343b76af81a005ef64f5e75a555389fd9147dabjeffhao return frame; 549e343b76af81a005ef64f5e75a555389fd9147dabjeffhao } 550e343b76af81a005ef64f5e75a555389fd9147dabjeffhao 55181d425b0b232962441616f8b14f73620bffef5e5Ian Rogers BaseMutex* GetHeldMutex(LockLevel level) const { 55200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers return held_mutexes_[level]; 55300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 55400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 55581d425b0b232962441616f8b14f73620bffef5e5Ian Rogers void SetHeldMutex(LockLevel level, BaseMutex* mutex) { 55600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers held_mutexes_[level] = mutex; 55700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 558ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes 5590e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro private: 5605d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes // We have no control over the size of 'bool', but want our boolean fields 5615d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes // to be 4-byte quantities. 5625d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes typedef uint32_t bool32_t; 5635d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes 56452673ffae0025d86f4023735581f19ebcc477487Ian Rogers explicit Thread(bool daemon); 565b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers ~Thread() LOCKS_EXCLUDED(Locks::mutator_lock_, 566b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers Locks::thread_suspend_count_lock_); 567c0f0933249cf516b37717faa766e1e9808f7c1f8Elliott Hughes void Destroy(); 568c0f0933249cf516b37717faa766e1e9808f7c1f8Elliott Hughes friend class ThreadList; // For ~Thread and Destroy. 5690e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 570365c10235438607541fa2259a5fec48061b90bd8Ian Rogers void CreatePeer(const char* name, bool as_daemon, jobject thread_group); 5715fe594f576225dd7d333835e39c448a71ea9b433Elliott Hughes friend class Runtime; // For CreatePeer. 5725fe594f576225dd7d333835e39c448a71ea9b433Elliott Hughes 573474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers // Avoid use, callers should use SetState. Used only by SignalCatcher::HandleSigQuit and ~Thread. 574474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers ThreadState SetStateUnsafe(ThreadState new_state) { 575474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers ThreadState old_state = GetState(); 57630e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers state_and_flags_.as_struct.state = new_state; 577c747cffa950b8398cb8844d47e2253214c855750Ian Rogers return old_state; 578c747cffa950b8398cb8844d47e2253214c855750Ian Rogers } 579474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers friend class SignalCatcher; // For SetStateUnsafe. 580c747cffa950b8398cb8844d47e2253214c855750Ian Rogers 581d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes void DumpState(std::ostream& os) const; 58200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void DumpStack(std::ostream& os) const 583b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 584b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 585d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes 586accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes // Out-of-line conveniences for debugging in gdb. 587498508c1187dc07d3eae5476784cde20f5224d93Elliott Hughes static Thread* CurrentFromGdb(); // Like Thread::Current. 58800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Like Thread::Dump(std::cerr). 589b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers void DumpFromGdb() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 590accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes 59193e74e8d879270071c3aa163f8495ada8d21f42fElliott Hughes static void* CreateCallback(void* arg); 59293e74e8d879270071c3aa163f8495ada8d21f42fElliott Hughes 59300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void HandleUncaughtExceptions(const ScopedObjectAccess& soa) 594b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 59500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void RemoveFromThreadGroup(const ScopedObjectAccess& soa) 596b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 597accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes 598462c94449720e0dc6b93d7138d835d345ccf67aeElliott Hughes void Init(); 5995d76c435082332ef79a22962386fa92a0870e378Ian Rogers void InitCardTable(); 600b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers void InitCpu(); 6013ea4ec5629613013ad9b0d7a69abdb94491ac46fbuzbee void InitFunctionPointers(); 602caabb1b77b4a55eb1bb45ebcd3071c9ea01dd3cfBrian Carlstrom void InitTid(); 603caabb1b77b4a55eb1bb45ebcd3071c9ea01dd3cfBrian Carlstrom void InitPthreadKeySelf(); 604be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes void InitStackHwm(); 605be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 60681d425b0b232962441616f8b14f73620bffef5e5Ian Rogers void NotifyLocked() EXCLUSIVE_LOCKS_REQUIRED(wait_mutex_); 6075f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes 608474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers bool ReadFlag(ThreadFlag flag) const { 60930e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers return (state_and_flags_.as_struct.flags & flag) != 0; 610474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers } 611474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers 612474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers void AtomicSetFlag(ThreadFlag flag); 613474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers 614474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers void AtomicClearFlag(ThreadFlag flag); 615474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers 616be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static void ThreadExitCallback(void* arg); 617b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 6180399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // TLS key used to retrieve the Thread*. 6190399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers static pthread_key_t pthread_key_self_; 6200399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 62100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Used to notify threads that they should attempt to resume, they will suspend again if 62200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // their suspend count is > 0. 62300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers static ConditionVariable* resume_cond_ 624b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers GUARDED_BY(Locks::thread_suspend_count_lock_); 62500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 6260399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // --- Frequently accessed fields first for short offsets --- 6270399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 628474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers // 32 bits of atomically changed state and flags. Keeping as 32 bits allows and atomic CAS to 629474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers // change from being Suspended to Runnable without a suspend request occurring. 63030e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers union StateAndFlags { 63130e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers struct PACKED { 63230e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers // Bitfield of flag values. Must be changed atomically so that flag values aren't lost. See 63330e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers // ThreadFlags for bit field meanings. 63430e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers volatile uint16_t flags; 63530e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers // Holds the ThreadState. May be changed non-atomically between Suspended (ie not Runnable) 63630e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers // transitions. Changing to Runnable requires that the suspend_request be part of the atomic 63730e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers // operation. If a thread is suspended and a suspend_request is present, a thread may not 63830e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers // change to Runnable as a GC or other operation is in progress. 63930e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers uint16_t state; 64030e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers } as_struct; 64130e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers int32_t as_int; 642474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers }; 64330e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers union StateAndFlags state_and_flags_; 64430e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers COMPILE_ASSERT(sizeof(union StateAndFlags) == sizeof(int32_t), 645474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers sizeof_state_and_flags_and_int32_are_different); 646474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers 6470399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // A non-zero value is used to tell the current thread to enter a safe point 6480399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // at the next poll. 649b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers int suspend_count_ GUARDED_BY(Locks::thread_suspend_count_lock_); 6500399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 6510399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // The biased card table, see CardTable for details 6520399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers byte* card_table_; 6530399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 6540399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // The pending exception or NULL. 6550399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers Throwable* exception_; 6560399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 6570399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // The end of this thread's stack. This is the lowest safely-addressable address on the stack. 6580399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // We leave extra space so there's room for the code that throws StackOverflowError. 6590399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers byte* stack_end_; 6600399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 6610399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // The top of the managed stack often manipulated directly by compiler generated code. 6620399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers ManagedStack managed_stack_; 6630399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 6640399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Every thread may have an associated JNI environment 6650399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers JNIEnvExt* jni_env_; 6660399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 6670399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Initialized to "this". On certain architectures (such as x86) reading 6680399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // off of Thread::Current is easy but getting the address of Thread::Current 6690399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // is hard. This field can be read off of Thread::Current to give the address. 6700399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers Thread* self_; 6710399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 6720399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Our managed peer (an instance of java.lang.Thread). 673dbe6f4613ae0161b169f4fca8a616b0b393370abMathieu Chartier jobject peer_; 6740399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 6750399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // The "lowest addressable byte" of the stack 6760399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers byte* stack_begin_; 6770399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 6780399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Size of the stack 6790399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers size_t stack_size_; 6800399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 681dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes // Thin lock thread id. This is a small integer used by the thin lock implementation. 682dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes // This is not to be confused with the native thread's tid, nor is it the value returned 683dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes // by java.lang.Thread.getId --- this is a distinct value, used only for locking. One 684dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes // important difference between this id and the ids visible to managed code is that these 685dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes // ones get reused (to ensure that they fit in the number of bits available). 686dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes uint32_t thin_lock_id_; 687b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 688d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes // System thread id. 689d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes pid_t tid_; 690d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes 6918daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes // Guards the 'interrupted_' and 'wait_monitor_' members. 69200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers mutable Mutex* wait_mutex_ DEFAULT_MUTEX_ACQUIRED_AFTER; 69300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers ConditionVariable* wait_cond_ GUARDED_BY(wait_mutex_); 69400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Pointer to the monitor lock we're currently waiting on (or NULL). 69500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers Monitor* wait_monitor_ GUARDED_BY(wait_mutex_); 69600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Thread "interrupted" status; stays raised until queried or thrown. 69700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers bool32_t interrupted_ GUARDED_BY(wait_mutex_); 6985f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes // The next thread in the wait set this thread is part of. 6995f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes Thread* wait_next_; 7008e4aac52962d54cb4be2078b9cd95685e067133aElliott Hughes // If we're blocked in MonitorEnter, this is the object we're trying to lock. 7018e4aac52962d54cb4be2078b9cd95685e067133aElliott Hughes Object* monitor_enter_object_; 7025f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes 7035f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes friend class Monitor; 704dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes 705408f79aeb676251ba35667a64e86c20638d7cb0bIan Rogers // Top of linked list of stack indirect reference tables or NULL for none 706408f79aeb676251ba35667a64e86c20638d7cb0bIan Rogers StackIndirectReferenceTable* top_sirt_; 707b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 70869759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro Runtime* runtime_; 70969759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro 7100399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers RuntimeStats stats_; 71145a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 712edcc09c737b00462881f147602656739d029571eElliott Hughes // Needed to get the right ClassLoader in JNI_OnLoad, but also 713edcc09c737b00462881f147602656739d029571eElliott Hughes // useful for testing. 714365c10235438607541fa2259a5fec48061b90bd8Ian Rogers ClassLoader* class_loader_override_; 715c143c55718342519db5398e41dda31422cf16c79buzbee 716bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers // Thread local, lazily allocated, long jump context. Used to deliver exceptions. 71785d1545e985ac689db4bad7849880e843707c862Elliott Hughes Context* long_jump_context_; 718bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 719418dfe7849f45535b5388a91bd7a16cfc20a612bElliott Hughes // A boolean telling us whether we're recursively throwing OOME. 7205d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes bool32_t throwing_OutOfMemoryError_; 721726079d3e2e50854cd6ca4c393f4529a796dba58Elliott Hughes 7220399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // How much of 'suspend_count_' is by request of the debugger, used to set things right 7230399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // when the debugger detaches. Must be <= suspend_count_. 724b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers int debug_suspend_count_ GUARDED_BY(Locks::thread_suspend_count_lock_); 7250399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 726475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes // JDWP invoke-during-breakpoint support. 727475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes DebugInvokeReq* debug_invoke_req_; 728475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes 729e343b76af81a005ef64f5e75a555389fd9147dabjeffhao // Additional stack used by method tracer to store method and return pc values. 730e343b76af81a005ef64f5e75a555389fd9147dabjeffhao // Stored as a pointer since std::vector is not PACKED. 731e343b76af81a005ef64f5e75a555389fd9147dabjeffhao std::vector<TraceStackFrame>* trace_stack_; 732e343b76af81a005ef64f5e75a555389fd9147dabjeffhao 733899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughes // A cached copy of the java.lang.Thread's name. 734899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughes std::string* name_; 735899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughes 73652673ffae0025d86f4023735581f19ebcc477487Ian Rogers // Is the thread a daemon? 7375d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes const bool32_t daemon_; 73852673ffae0025d86f4023735581f19ebcc477487Ian Rogers 7390d39c12238499ca9ccc34d1532c443335e7c1044Elliott Hughes // A cached pthread_t for the pthread underlying this Thread*. 7400d39c12238499ca9ccc34d1532c443335e7c1044Elliott Hughes pthread_t pthread_self_; 7410d39c12238499ca9ccc34d1532c443335e7c1044Elliott Hughes 74200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Support for Mutex lock hierarchy bug detection. 74300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers BaseMutex* held_mutexes_[kMaxMutexLevel + 1]; 744ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes 7450399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // A positive value implies we're in a region where thread suspension isn't expected. 7460399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers uint32_t no_thread_suspension_; 74752673ffae0025d86f4023735581f19ebcc477487Ian Rogers 74852673ffae0025d86f4023735581f19ebcc477487Ian Rogers // Cause for last suspension. 74952673ffae0025d86f4023735581f19ebcc477487Ian Rogers const char* last_no_thread_suspension_cause_; 7505d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes 751a32a6fd4a781262dff4fec102da053d16b7ef6c0Ian Rogers public: 752a32a6fd4a781262dff4fec102da053d16b7ef6c0Ian Rogers // Runtime support function pointers 7536a607ad0902f3b8478e95d0b6b3e63a538571a3fElliott Hughes // TODO: move this near the top, since changing its offset requires all oats to be recompiled! 75457b86d47b66322693a070185fadfb43cb9c12eabIan Rogers EntryPoints entrypoints_; 75521d28f510eb590f52810c83f1f3f37fe5f4adf46Shih-wei Liao#ifdef ART_USE_GREENLAND_COMPILER 75621d28f510eb590f52810c83f1f3f37fe5f4adf46Shih-wei Liao RuntimeEntryPoints runtime_entry_points_; 75721d28f510eb590f52810c83f1f3f37fe5f4adf46Shih-wei Liao#endif 758a32a6fd4a781262dff4fec102da053d16b7ef6c0Ian Rogers 759a32a6fd4a781262dff4fec102da053d16b7ef6c0Ian Rogers private: 7606a607ad0902f3b8478e95d0b6b3e63a538571a3fElliott Hughes // How many times has our pthread key's destructor been called? 7616a607ad0902f3b8478e95d0b6b3e63a538571a3fElliott Hughes uint32_t thread_exit_check_count_; 7626a607ad0902f3b8478e95d0b6b3e63a538571a3fElliott Hughes 76322f454c7d349c439c774c5d79b32514b190fd531Ian Rogers friend class ScopedThreadStateChange; 76422f454c7d349c439c774c5d79b32514b190fd531Ian Rogers 7650e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro DISALLOW_COPY_AND_ASSIGN(Thread); 7660e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro}; 767bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 768330304de14dc7118b45b8e7b5bd11a172fa61701Elliott Hughesstd::ostream& operator<<(std::ostream& os, const Thread& thread); 76934e069606d6f1698cd3c33b39e72b79ae27e1c7bElliott Hughesstd::ostream& operator<<(std::ostream& os, const ThreadState& state); 7700e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 7710e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro} // namespace art 7720e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 7730e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro#endif // ART_SRC_THREAD_H_ 774