thread.h revision df1ce91ba97bc79a0637e5504b39318fb1c9f577
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 280e4627e593bc39f8e3d89c31f8977d55054c07ccMathieu Chartier#include "closure.h" 29578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "globals.h" 30725a957985171d712d5c048cc3d00ff14968784bjeffhao#include "instrumentation.h" 31578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "macros.h" 3257b86d47b66322693a070185fadfb43cb9c12eabIan Rogers#include "oat/runtime/oat_support_entrypoints.h" 3381d425b0b232962441616f8b14f73620bffef5e5Ian Rogers#include "locks.h" 34578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "offsets.h" 359d5ccec86d60c9ddd811836b9a2bc28d0b3d11feElliott Hughes#include "runtime_stats.h" 3668e76526e98432625464022cb26f66b9ef6f5af4Elliott Hughes#include "stack.h" 371f5393447b9f45be7918042d9ee7b521376de866Ian Rogers#include "stack_indirect_reference_table.h" 38bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers#include "UniquePtr.h" 39b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 400e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapironamespace art { 410e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 4281d425b0b232962441616f8b14f73620bffef5e5Ian Rogersclass AbstractMethod; 4369f5bc6759f256a146eefd8a7141d39fcc3b0421Elliott Hughesclass Array; 4481d425b0b232962441616f8b14f73620bffef5e5Ian Rogersclass BaseMutex; 4537f7a40f6789bb287f287a9af00777af9d6428eeElliott Hughesclass Class; 461f87008b165d26541d832ff805250afdc89c253dBrian Carlstromclass ClassLinker; 47edcc09c737b00462881f147602656739d029571eElliott Hughesclass ClassLoader; 48bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogersclass Context; 491b09b094a85e03f6ef5f687f58bb91c433273ba1Ian Rogersstruct DebugInvokeReq; 5081d425b0b232962441616f8b14f73620bffef5e5Ian Rogersclass DexFile; 51120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogersstruct JavaVMExt; 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 { 9950ffee20ced9c0c7ac68889c86be8844cf120cf2Ian Rogers kSuspendRequest = 1, // If set implies that suspend_count_ > 0 and the Thread should enter the 10050ffee20ced9c0c7ac68889c86be8844cf120cf2Ian Rogers // safepoint handler. 10150ffee20ced9c0c7ac68889c86be8844cf120cf2Ian Rogers kCheckpointRequest = 2, // Request that the thread do some checkpoint work and then continue. 10250ffee20ced9c0c7ac68889c86be8844cf120cf2Ian Rogers kExceptionPending = 4, // If set implies that exception_ != NULL. 10350ffee20ced9c0c7ac68889c86be8844cf120cf2Ian Rogers kEnterInterpreter = 8, // Instruct managed code it should enter the interpreter. 104474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers}; 105474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers 106df1ce91ba97bc79a0637e5504b39318fb1c9f577Ian Rogersclass PACKED(4) Thread { 10734e069606d6f1698cd3c33b39e72b79ae27e1c7bElliott Hughes public: 108932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers // Space to throw a StackOverflowError in. 109d752132c73072084a3def9257cca4fcee76047b6jeffhao static const size_t kStackOverflowReservedBytes = 10 * KB; 110c143c55718342519db5398e41dda31422cf16c79buzbee 111462c94449720e0dc6b93d7138d835d345ccf67aeElliott Hughes // Creates a new native thread corresponding to the given managed peer. 112462c94449720e0dc6b93d7138d835d345ccf67aeElliott Hughes // Used to implement Thread.start. 11352673ffae0025d86f4023735581f19ebcc477487Ian Rogers static void CreateNativeThread(JNIEnv* env, jobject peer, size_t stack_size, bool daemon); 11461e019d291583029c01b61b93bea750f2b663c37Carl Shapiro 115462c94449720e0dc6b93d7138d835d345ccf67aeElliott Hughes // Attaches the calling native thread to the runtime, returning the new native peer. 116462c94449720e0dc6b93d7138d835d345ccf67aeElliott Hughes // Used to implement JNI AttachCurrentThread and AttachCurrentThreadAsDaemon calls. 117664bebf92eb2151b9b570ccd42ac4b6056c3ea9cMathieu Chartier static Thread* Attach(const char* thread_name, bool as_daemon, jobject thread_group, 118664bebf92eb2151b9b570ccd42ac4b6056c3ea9cMathieu Chartier bool create_peer); 119b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 120caabb1b77b4a55eb1bb45ebcd3071c9ea01dd3cfBrian Carlstrom // Reset internal state of child thread after fork. 121caabb1b77b4a55eb1bb45ebcd3071c9ea01dd3cfBrian Carlstrom void InitAfterFork(); 122caabb1b77b4a55eb1bb45ebcd3071c9ea01dd3cfBrian Carlstrom 1230399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers static Thread* Current() __attribute__ ((pure)) { 124e0447357fa8dece635c213d360cd03160cc2d8a0Elliott Hughes // We rely on Thread::Current returning NULL for a detached thread, so it's not obvious 125e0447357fa8dece635c213d360cd03160cc2d8a0Elliott Hughes // that we can replace this with a direct %fs access on x86. 126d0e7e777c412071a911dd2c008b20b7d879fd392Carl Shapiro void* thread = pthread_getspecific(Thread::pthread_key_self_); 127d0e7e777c412071a911dd2c008b20b7d879fd392Carl Shapiro return reinterpret_cast<Thread*>(thread); 1280e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 1290e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 13000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers static Thread* FromManagedThread(const ScopedObjectAccessUnchecked& ts, Object* thread_peer) 131b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 132b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 13300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers static Thread* FromManagedThread(const ScopedObjectAccessUnchecked& ts, jobject thread) 134b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 135b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 1368daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes 13728fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes // Translates 172 to pAllocArrayFromCode and so on. 13828fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes static void DumpThreadOffset(std::ostream& os, uint32_t offset, size_t size_of_pointers); 13928fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes 14000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Dumps a one-line summary of thread state (used for operator<<). 14100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void ShortDump(std::ostream& os) const; 14200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 14300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Dumps the detailed thread state and the thread stack (used for SIGQUIT). 14400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void Dump(std::ostream& os) const 145b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 146b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 147a09576416788b916095739e43a16917e7948f3a4Elliott Hughes 148abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes // Dumps the SIGQUIT per-thread header. 'thread' can be NULL for a non-attached thread, in which 149abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes // case we use 'tid' to identify the thread, and we'll include as much information as we can. 15000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers static void DumpState(std::ostream& os, const Thread* thread, pid_t tid) 151b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_); 152abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes 153474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers ThreadState GetState() const { 15430e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers return static_cast<ThreadState>(state_and_flags_.as_struct.state); 1550cfe1fb7060576d047f7f894fc0d8b87de84fcabIan Rogers } 1560cfe1fb7060576d047f7f894fc0d8b87de84fcabIan Rogers 157474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers ThreadState SetState(ThreadState new_state); 1588d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes 15981d425b0b232962441616f8b14f73620bffef5e5Ian Rogers int GetSuspendCount() const EXCLUSIVE_LOCKS_REQUIRED(Locks::thread_suspend_count_lock_) { 16000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers return suspend_count_; 16152673ffae0025d86f4023735581f19ebcc477487Ian Rogers } 16252673ffae0025d86f4023735581f19ebcc477487Ian Rogers 16381d425b0b232962441616f8b14f73620bffef5e5Ian Rogers int GetDebugSuspendCount() const EXCLUSIVE_LOCKS_REQUIRED(Locks::thread_suspend_count_lock_) { 16400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers return debug_suspend_count_; 16500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 16600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 167858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier bool IsSuspended() const { 168858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier union StateAndFlags state_and_flags = state_and_flags_; 169858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier return state_and_flags.as_struct.state != kRunnable && 170858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier (state_and_flags.as_struct.flags & kSuspendRequest) != 0; 17100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 17200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 17301ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers void ModifySuspendCount(Thread* self, int delta, bool for_debugger) 174b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers EXCLUSIVE_LOCKS_REQUIRED(Locks::thread_suspend_count_lock_); 17500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 1760e4627e593bc39f8e3d89c31f8977d55054c07ccMathieu Chartier bool RequestCheckpoint(Closure* function); 177858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier 17800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Called when thread detected that the thread_suspend_count_ was non-zero. Gives up share of 17900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // mutator_lock_ and waits until it is resumed and thread_suspend_count_ is zero. 1809da7f59c9059397182b9a97e898a42ec06d4d646Ian Rogers void FullSuspendCheck() 181b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 182b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 18300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 18400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Transition from non-runnable to runnable state acquiring share on mutator_lock_. 18500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers ThreadState TransitionFromSuspendedToRunnable() 186b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 187b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCK_FUNCTION(Locks::mutator_lock_); 18800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 18900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Transition from runnable into a state where mutator privileges are denied. Releases share of 19000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // mutator lock. 19100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void TransitionFromRunnableToSuspended(ThreadState new_state) 192b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 193b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers UNLOCK_FUNCTION(Locks::mutator_lock_); 194038a806df72f884d22283a84a31c9a1d35ba1fdfElliott Hughes 19500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Wait for a debugger suspension on the thread associated with the given peer. Returns the 19600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // thread on success, else NULL. If the thread should be suspended then request_suspension should 19700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // be true on entry. If the suspension times out then *timeout is set to true. 19800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers static Thread* SuspendForDebugger(jobject peer, bool request_suspension, bool* timeout) 199b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::mutator_lock_, 200b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers Locks::thread_list_lock_, 201b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers Locks::thread_suspend_count_lock_); 2020cfe1fb7060576d047f7f894fc0d8b87de84fcabIan Rogers 2030399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Once called thread suspension will cause an assertion failure. 2040399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers#ifndef NDEBUG 20552673ffae0025d86f4023735581f19ebcc477487Ian Rogers const char* StartAssertNoThreadSuspension(const char* cause) { 20652673ffae0025d86f4023735581f19ebcc477487Ian Rogers CHECK(cause != NULL); 20752673ffae0025d86f4023735581f19ebcc477487Ian Rogers const char* previous_cause = last_no_thread_suspension_cause_; 2080399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers no_thread_suspension_++; 20952673ffae0025d86f4023735581f19ebcc477487Ian Rogers last_no_thread_suspension_cause_ = cause; 21052673ffae0025d86f4023735581f19ebcc477487Ian Rogers return previous_cause; 2110399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 21252673ffae0025d86f4023735581f19ebcc477487Ian Rogers#else 21352673ffae0025d86f4023735581f19ebcc477487Ian Rogers const char* StartAssertNoThreadSuspension(const char* cause) { 21452673ffae0025d86f4023735581f19ebcc477487Ian Rogers CHECK(cause != NULL); 21552673ffae0025d86f4023735581f19ebcc477487Ian Rogers return NULL; 21652673ffae0025d86f4023735581f19ebcc477487Ian Rogers } 21752673ffae0025d86f4023735581f19ebcc477487Ian Rogers#endif 21852673ffae0025d86f4023735581f19ebcc477487Ian Rogers 2190399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // End region where no thread suspension is expected. 2200399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers#ifndef NDEBUG 22152673ffae0025d86f4023735581f19ebcc477487Ian Rogers void EndAssertNoThreadSuspension(const char* old_cause) { 22252673ffae0025d86f4023735581f19ebcc477487Ian Rogers CHECK(old_cause != NULL || no_thread_suspension_ == 1); 22352673ffae0025d86f4023735581f19ebcc477487Ian Rogers CHECK_GT(no_thread_suspension_, 0U); 2240399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers no_thread_suspension_--; 22552673ffae0025d86f4023735581f19ebcc477487Ian Rogers last_no_thread_suspension_cause_ = old_cause; 22652673ffae0025d86f4023735581f19ebcc477487Ian Rogers } 22752673ffae0025d86f4023735581f19ebcc477487Ian Rogers#else 22852673ffae0025d86f4023735581f19ebcc477487Ian Rogers void EndAssertNoThreadSuspension(const char*) { 2290399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 23052673ffae0025d86f4023735581f19ebcc477487Ian Rogers#endif 2310399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 23200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 23300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers#ifndef NDEBUG 23400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void AssertThreadSuspensionIsAllowable(bool check_locks = true) const; 23500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers#else 23600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void AssertThreadSuspensionIsAllowable(bool check_locks = true) const { 237e0f0cb3d855cb5e926452b5e1ec8457adc4e454eMathieu Chartier UNUSED(check_locks); // Keep GCC happy about unused parameters. 2380399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 23900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers#endif 2400399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 24100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers bool IsDaemon() const { 24200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers return daemon_; 24300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 24400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 2455f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes bool HoldsLock(Object*); 2465f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes 2478daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes /* 2488daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * Changes the priority of this thread to match that of the java.lang.Thread object. 2498daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * 2508daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * We map a priority value from 1-10 to Linux "nice" values, where lower 2518daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * numbers indicate higher priority. 2528daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes */ 2538daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes void SetNativePriority(int newPriority); 2548daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes 2558daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes /* 2568daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * Returns the thread priority for the current thread by querying the system. 2578daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * This is useful when attaching a thread through JNI. 2588daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * 2598daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * Returns a value from 1 to 10 (compatible with java.lang.Thread values). 2608daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes */ 2618daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes static int GetNativePriority(); 2628daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes 263dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes uint32_t GetThinLockId() const { 264dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes return thin_lock_id_; 265b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 266b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 267d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes pid_t GetTid() const { 268d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes return tid_; 269d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes } 270e27955ca3ca960928d4dbd6cb79711fce06950b3Elliott Hughes 271ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes // Returns the java.lang.Thread's name, or NULL if this Thread* doesn't have a peer. 27200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers String* GetThreadName(const ScopedObjectAccessUnchecked& ts) const 273b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 274899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughes 275ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes // Sets 'name' to the java.lang.Thread's name. This requires no transition to managed code, 276ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes // allocation, or locking. 277ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes void GetThreadName(std::string& name) const; 278ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes 279899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughes // Sets the thread's name. 280b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers void SetThreadName(const char* name) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 281fc86162ce2a3467acb690e18cc8bd9b3daafc606Elliott Hughes 282dbe6f4613ae0161b169f4fca8a616b0b393370abMathieu Chartier jobject GetPeer() const { 2838daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes return peer_; 2848daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes } 2858daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes 28600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers bool HasPeer() const { 28700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers return peer_ != NULL; 28800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 28900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 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 32294d6df471a406a03bb1afba8ca3ae9c0fbf366b5jeffhao void DeliverException(Throwable* exception) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 32394d6df471a406a03bb1afba8ca3ae9c0fbf366b5jeffhao if (exception == NULL) { 32494d6df471a406a03bb1afba8ca3ae9c0fbf366b5jeffhao ThrowNewException("Ljava/lang/NullPointerException;", "throw with null exception"); 32594d6df471a406a03bb1afba8ca3ae9c0fbf366b5jeffhao } else { 32694d6df471a406a03bb1afba8ca3ae9c0fbf366b5jeffhao SetException(exception); 32794d6df471a406a03bb1afba8ca3ae9c0fbf366b5jeffhao } 32894d6df471a406a03bb1afba8ca3ae9c0fbf366b5jeffhao } 32994d6df471a406a03bb1afba8ca3ae9c0fbf366b5jeffhao 330bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers // Find catch block and perform long jump to appropriate exception handle 33194d6df471a406a03bb1afba8ca3ae9c0fbf366b5jeffhao void QuickDeliverException() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 332bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 333bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers Context* GetLongJumpContext(); 3340399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers void ReleaseLongJumpContext(Context* context) { 3350399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers DCHECK(long_jump_context_ == NULL); 3360399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers long_jump_context_ = context; 3371a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao } 3381a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao 33966f19258f9728d4ffe026074d8fd429d639802faMathieu Chartier AbstractMethod* GetCurrentMethod(uint32_t* dex_pc = NULL, size_t* frame_id = NULL) const 340b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 3410399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 342bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers void SetTopOfStack(void* stack, uintptr_t pc) { 34366f19258f9728d4ffe026074d8fd429d639802faMathieu Chartier AbstractMethod** top_method = reinterpret_cast<AbstractMethod**>(stack); 3440399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers managed_stack_.SetTopQuickFrame(top_method); 3450399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers managed_stack_.SetTopQuickFramePc(pc); 3460e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 3470e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 3480399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers bool HasManagedStack() const { 3490399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return managed_stack_.GetTopQuickFrame() != NULL || managed_stack_.GetTopShadowFrame() != NULL; 350bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers } 351bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 352a4f94740f9d66b21f4bcd3a225c434aa29cfa323Elliott Hughes // If 'msg' is NULL, no detail message is set. 35300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void ThrowNewException(const char* exception_class_descriptor, const char* msg) 354b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 3555cb5ad27944efb08d4556b3c0d362302e37e832bElliott Hughes 356a4f94740f9d66b21f4bcd3a225c434aa29cfa323Elliott Hughes // If 'msg' is NULL, no detail message is set. An exception must be pending, and will be 357a4f94740f9d66b21f4bcd3a225c434aa29cfa323Elliott Hughes // used as the new exception's cause. 35800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void ThrowNewWrappedException(const char* exception_class_descriptor, const char* msg) 359b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 360a4f94740f9d66b21f4bcd3a225c434aa29cfa323Elliott Hughes 3615cb5ad27944efb08d4556b3c0d362302e37e832bElliott Hughes void ThrowNewExceptionF(const char* exception_class_descriptor, const char* fmt, ...) 36200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers __attribute__((format(printf, 3, 4))) 363b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 364a5b897eae4b6f9f9608faa9eada7ddf42bf1bfd2Elliott Hughes 36500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void ThrowNewExceptionV(const char* exception_class_descriptor, const char* fmt, va_list ap) 366b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 3674a2b41793d18d402286ae37e9de4fd392bc75a08Elliott Hughes 3682ced6a534157d5d963693346904389c19775d2daElliott Hughes // OutOfMemoryError is special, because we need to pre-allocate an instance. 3698a8b9cbe158ee13477f2381f164c519762a06fefElliott Hughes // Only the GC should call this. 370120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers void ThrowOutOfMemoryError(const char* msg) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 37179082e367845bbd68ec44ef2ddd1be8ef0e1550fElliott Hughes 3720399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers //QuickFrameIterator FindExceptionHandler(void* throw_pc, void** handler_pc); 3731a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao 37466f19258f9728d4ffe026074d8fd429d639802faMathieu Chartier void* FindExceptionHandlerInMethod(const AbstractMethod* method, 3751a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao void* throw_pc, 3761a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao const DexFile& dex_file, 3771a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao ClassLinker* class_linker); 378c143c55718342519db5398e41dda31422cf16c79buzbee 379be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static void Startup(); 380038a806df72f884d22283a84a31c9a1d35ba1fdfElliott Hughes static void FinishStartup(); 381c1674ed06662420213441ff2b818f2f71f9098dcElliott Hughes static void Shutdown(); 382b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 383b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // JNI methods 38469f5bc6759f256a146eefd8a7141d39fcc3b0421Elliott Hughes JNIEnvExt* GetJniEnv() const { 385b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return jni_env_; 386b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 387b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 388408f79aeb676251ba35667a64e86c20638d7cb0bIan Rogers // Convert a jobject into a Object* 38981d425b0b232962441616f8b14f73620bffef5e5Ian Rogers Object* DecodeJObject(jobject obj) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 390b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 3918daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes // Implements java.lang.Thread.interrupted. 39281d425b0b232962441616f8b14f73620bffef5e5Ian Rogers bool Interrupted(); 3938daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes // Implements java.lang.Thread.isInterrupted. 39481d425b0b232962441616f8b14f73620bffef5e5Ian Rogers bool IsInterrupted(); 39581d425b0b232962441616f8b14f73620bffef5e5Ian Rogers void Interrupt(); 39681d425b0b232962441616f8b14f73620bffef5e5Ian Rogers void Notify(); 3975f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes 398474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers ClassLoader* GetClassLoaderOverride() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 399c143c55718342519db5398e41dda31422cf16c79buzbee return class_loader_override_; 400c143c55718342519db5398e41dda31422cf16c79buzbee } 401c143c55718342519db5398e41dda31422cf16c79buzbee 402365c10235438607541fa2259a5fec48061b90bd8Ian Rogers void SetClassLoaderOverride(ClassLoader* class_loader_override) { 403c143c55718342519db5398e41dda31422cf16c79buzbee class_loader_override_ = class_loader_override; 404c143c55718342519db5398e41dda31422cf16c79buzbee } 405c143c55718342519db5398e41dda31422cf16c79buzbee 406aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers // Create the internal representation of a stack trace, that is more time 407aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers // and space efficient to compute than the StackTraceElement[] 40864b6d145fa53b8dfb07a8fc2426af13f155d5a4dIan Rogers jobject CreateInternalStackTrace(const ScopedObjectAccessUnchecked& soa) const 409b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 41001158d7a57c8321370667a6045220237d16e0da8Elliott Hughes 41101158d7a57c8321370667a6045220237d16e0da8Elliott Hughes // Convert an internal stack trace representation (returned by CreateInternalStackTrace) to a 41201158d7a57c8321370667a6045220237d16e0da8Elliott Hughes // StackTraceElement[]. If output_array is NULL, a new array is created, otherwise as many 41301158d7a57c8321370667a6045220237d16e0da8Elliott Hughes // frames as will fit are written into the given array. If stack_depth is non-NULL, it's updated 41401158d7a57c8321370667a6045220237d16e0da8Elliott Hughes // with the number of valid frames in the returned array. 41501158d7a57c8321370667a6045220237d16e0da8Elliott Hughes static jobjectArray InternalStackTraceToStackTraceElementArray(JNIEnv* env, jobject internal, 41601158d7a57c8321370667a6045220237d16e0da8Elliott Hughes jobjectArray output_array = NULL, int* stack_depth = NULL); 41755df06be4369f5d8ab5eb61a5d22809255171036Shih-wei Liao 41800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void VisitRoots(Heap::RootVisitor* visitor, void* arg) 419b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 4206f1c94968ada57da433debf8e2d1b38a80ceb510Mathieu Chartier 4216f1c94968ada57da433debf8e2d1b38a80ceb510Mathieu Chartier void VerifyRoots(Heap::VerifyRootVisitor* visitor, void* arg) 4226f1c94968ada57da433debf8e2d1b38a80ceb510Mathieu Chartier SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 423410c0c876f326e14c176a39ba21fc4dd3f7db8abElliott Hughes 424250455229aa0cc07bbd18174efe510bd52631a99jeffhao#if VERIFY_OBJECT_ENABLED 425b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers void VerifyStack() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 426250455229aa0cc07bbd18174efe510bd52631a99jeffhao#else 427b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers void VerifyStack() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_){} 428250455229aa0cc07bbd18174efe510bd52631a99jeffhao#endif 429250455229aa0cc07bbd18174efe510bd52631a99jeffhao 430be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes // 431be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes // Offsets of various members of native Thread class, used by compiled code. 432be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes // 433be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 434be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static ThreadOffset SelfOffset() { 435be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, self_)); 436be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 437be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 438be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static ThreadOffset ExceptionOffset() { 439be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, exception_)); 440be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 441be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 44254e7df1896a4066cbb9fe6f72249829f0b8c49c6Elliott Hughes static ThreadOffset ThinLockIdOffset() { 443be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, thin_lock_id_)); 444be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 445be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 446be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static ThreadOffset CardTableOffset() { 447be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, card_table_)); 448be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 449be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 450474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers static ThreadOffset ThreadFlagsOffset() { 451474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, state_and_flags_)); 452be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 453be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 454932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers // Size of stack less any space reserved for stack overflow 455d752132c73072084a3def9257cca4fcee76047b6jeffhao size_t GetStackSize() const { 45630fab40ee5a07af6b8c3b6b0e9438071695a57f4Ian Rogers return stack_size_ - (stack_end_ - stack_begin_); 457932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers } 458932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers 459d752132c73072084a3def9257cca4fcee76047b6jeffhao byte* GetStackEnd() const { 460d752132c73072084a3def9257cca4fcee76047b6jeffhao return stack_end_; 461d752132c73072084a3def9257cca4fcee76047b6jeffhao } 462d752132c73072084a3def9257cca4fcee76047b6jeffhao 463932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers // Set the stack end to that to be used during a stack overflow 464b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers void SetStackEndForStackOverflow() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 465932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers 466932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers // Set the stack end to that to be used during regular execution 467932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers void ResetDefaultStackEnd() { 468932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers // Our stacks grow down, so we want stack_end_ to be near there, but reserving enough room 469932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers // to throw a StackOverflowError. 47030fab40ee5a07af6b8c3b6b0e9438071695a57f4Ian Rogers stack_end_ = stack_begin_ + kStackOverflowReservedBytes; 471932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers } 472932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers 473120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers bool IsHandlingStackOverflow() const { 474120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers return stack_end_ == stack_begin_; 475120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers } 476120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers 477449b4bdf90b527ef7a42faaf087494538e62363cElliott Hughes static ThreadOffset StackEndOffset() { 478449b4bdf90b527ef7a42faaf087494538e62363cElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, stack_end_)); 479be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 480be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 481be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static ThreadOffset JniEnvOffset() { 482be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, jni_env_)); 483be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 484be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 485be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static ThreadOffset TopOfManagedStackOffset() { 4860399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, managed_stack_) + 4870399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers ManagedStack::TopQuickFrameOffset()); 488be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 489be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 490bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers static ThreadOffset TopOfManagedStackPcOffset() { 4910399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, managed_stack_) + 4920399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers ManagedStack::TopQuickFramePcOffset()); 4930399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 4940399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 4950399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers const ManagedStack* GetManagedStack() const { 4960399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return &managed_stack_; 4970399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 4980399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 4990399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Linked list recording fragments of managed stack. 5000399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers void PushManagedStackFragment(ManagedStack* fragment) { 5010399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers managed_stack_.PushManagedStackFragment(fragment); 5020399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 5030399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers void PopManagedStackFragment(const ManagedStack& fragment) { 5040399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers managed_stack_.PopManagedStackFragment(fragment); 505bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers } 506bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 5070399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers ShadowFrame* PushShadowFrame(ShadowFrame* new_top_frame) { 5080399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return managed_stack_.PushShadowFrame(new_top_frame); 509de479be99328d2113bf483e082c9ecf235a34d69TDYa } 510de479be99328d2113bf483e082c9ecf235a34d69TDYa 511de479be99328d2113bf483e082c9ecf235a34d69TDYa ShadowFrame* PopShadowFrame() { 5120399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return managed_stack_.PopShadowFrame(); 513de479be99328d2113bf483e082c9ecf235a34d69TDYa } 514f7ad17e108b9357d7c94c6218a8521140a667f3dLogan Chien 515d668a06b5dcc3b0f7f788da4d756cd4ee6f1d0faTDYa static ThreadOffset TopShadowFrameOffset() { 5160399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, managed_stack_) + 5170399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers ManagedStack::TopShadowFrameOffset()); 518d668a06b5dcc3b0f7f788da4d756cd4ee6f1d0faTDYa } 519d668a06b5dcc3b0f7f788da4d756cd4ee6f1d0faTDYa 5200399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Number of references allocated in ShadowFrames on this thread 5210399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers size_t NumShadowFrameReferences() const { 5220399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return managed_stack_.NumShadowFrameReferences(); 5230399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 5240399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 5250399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Number of references in SIRTs on this thread 5260399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers size_t NumSirtReferences(); 5270399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 5280399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Number of references allocated in SIRTs & shadow frames on this thread 5290399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers size_t NumStackReferences() { 5300399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return NumSirtReferences() + NumShadowFrameReferences(); 5310399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers }; 5320399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 5330399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Is the given obj in this thread's stack indirect reference table? 5340399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers bool SirtContains(jobject obj); 5350399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 5360399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers void SirtVisitRoots(Heap::RootVisitor* visitor, void* arg); 5370399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 5381f5393447b9f45be7918042d9ee7b521376de866Ian Rogers void PushSirt(StackIndirectReferenceTable* sirt) { 5391f5393447b9f45be7918042d9ee7b521376de866Ian Rogers sirt->SetLink(top_sirt_); 5401f5393447b9f45be7918042d9ee7b521376de866Ian Rogers top_sirt_ = sirt; 5411f5393447b9f45be7918042d9ee7b521376de866Ian Rogers } 5421f5393447b9f45be7918042d9ee7b521376de866Ian Rogers 5431f5393447b9f45be7918042d9ee7b521376de866Ian Rogers StackIndirectReferenceTable* PopSirt() { 5441f5393447b9f45be7918042d9ee7b521376de866Ian Rogers StackIndirectReferenceTable* sirt = top_sirt_; 5451f5393447b9f45be7918042d9ee7b521376de866Ian Rogers DCHECK(sirt != NULL); 5461f5393447b9f45be7918042d9ee7b521376de866Ian Rogers top_sirt_ = top_sirt_->GetLink(); 5471f5393447b9f45be7918042d9ee7b521376de866Ian Rogers return sirt; 5481f5393447b9f45be7918042d9ee7b521376de866Ian Rogers } 54940381fb9dc4b4cf274f1e58b2cdf4396202c6189Brian Carlstrom 550be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static ThreadOffset TopSirtOffset() { 551be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, top_sirt_)); 552be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 553be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 554475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes DebugInvokeReq* GetInvokeReq() { 555475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes return debug_invoke_req_; 556475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes } 557475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes 558c0f0933249cf516b37717faa766e1e9808f7c1f8Elliott Hughes void SetDebuggerUpdatesEnabled(bool enabled); 559c0f0933249cf516b37717faa766e1e9808f7c1f8Elliott Hughes 560725a957985171d712d5c048cc3d00ff14968784bjeffhao const std::vector<InstrumentationStackFrame>* GetInstrumentationStack() const { 561725a957985171d712d5c048cc3d00ff14968784bjeffhao return instrumentation_stack_; 562e343b76af81a005ef64f5e75a555389fd9147dabjeffhao } 563e343b76af81a005ef64f5e75a555389fd9147dabjeffhao 564725a957985171d712d5c048cc3d00ff14968784bjeffhao bool IsInstrumentationStackEmpty() const { 565725a957985171d712d5c048cc3d00ff14968784bjeffhao return instrumentation_stack_->empty(); 566a9ef3fd82bebc6370fc3ddbb094988feb6c83022jeffhao } 567a9ef3fd82bebc6370fc3ddbb094988feb6c83022jeffhao 568725a957985171d712d5c048cc3d00ff14968784bjeffhao void PushInstrumentationStackFrame(const InstrumentationStackFrame& frame) { 569725a957985171d712d5c048cc3d00ff14968784bjeffhao instrumentation_stack_->push_back(frame); 570e343b76af81a005ef64f5e75a555389fd9147dabjeffhao } 571e343b76af81a005ef64f5e75a555389fd9147dabjeffhao 572725a957985171d712d5c048cc3d00ff14968784bjeffhao InstrumentationStackFrame PopInstrumentationStackFrame() { 573725a957985171d712d5c048cc3d00ff14968784bjeffhao InstrumentationStackFrame frame = instrumentation_stack_->back(); 574725a957985171d712d5c048cc3d00ff14968784bjeffhao instrumentation_stack_->pop_back(); 575e343b76af81a005ef64f5e75a555389fd9147dabjeffhao return frame; 576e343b76af81a005ef64f5e75a555389fd9147dabjeffhao } 577e343b76af81a005ef64f5e75a555389fd9147dabjeffhao 57881d425b0b232962441616f8b14f73620bffef5e5Ian Rogers BaseMutex* GetHeldMutex(LockLevel level) const { 57900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers return held_mutexes_[level]; 58000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 58100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 58281d425b0b232962441616f8b14f73620bffef5e5Ian Rogers void SetHeldMutex(LockLevel level, BaseMutex* mutex) { 58300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers held_mutexes_[level] = mutex; 58400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 585ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes 586858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier void RunCheckpointFunction() { 587858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier CHECK(checkpoint_function_ != NULL); 588858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier checkpoint_function_->Run(this); 589858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier } 590858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier 591858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier bool ReadFlag(ThreadFlag flag) const { 592858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier return (state_and_flags_.as_struct.flags & flag) != 0; 593858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier } 594858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier 595858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier void AtomicSetFlag(ThreadFlag flag); 596858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier 597858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier void AtomicClearFlag(ThreadFlag flag); 598858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier 5990e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro private: 6005d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes // We have no control over the size of 'bool', but want our boolean fields 6015d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes // to be 4-byte quantities. 6025d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes typedef uint32_t bool32_t; 6035d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes 60452673ffae0025d86f4023735581f19ebcc477487Ian Rogers explicit Thread(bool daemon); 605b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers ~Thread() LOCKS_EXCLUDED(Locks::mutator_lock_, 606b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers Locks::thread_suspend_count_lock_); 607c0f0933249cf516b37717faa766e1e9808f7c1f8Elliott Hughes void Destroy(); 608c0f0933249cf516b37717faa766e1e9808f7c1f8Elliott Hughes friend class ThreadList; // For ~Thread and Destroy. 6090e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 610365c10235438607541fa2259a5fec48061b90bd8Ian Rogers void CreatePeer(const char* name, bool as_daemon, jobject thread_group); 6115fe594f576225dd7d333835e39c448a71ea9b433Elliott Hughes friend class Runtime; // For CreatePeer. 6125fe594f576225dd7d333835e39c448a71ea9b433Elliott Hughes 613474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers // Avoid use, callers should use SetState. Used only by SignalCatcher::HandleSigQuit and ~Thread. 614474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers ThreadState SetStateUnsafe(ThreadState new_state) { 615474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers ThreadState old_state = GetState(); 61630e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers state_and_flags_.as_struct.state = new_state; 617c747cffa950b8398cb8844d47e2253214c855750Ian Rogers return old_state; 618c747cffa950b8398cb8844d47e2253214c855750Ian Rogers } 619474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers friend class SignalCatcher; // For SetStateUnsafe. 620c747cffa950b8398cb8844d47e2253214c855750Ian Rogers 621d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes void DumpState(std::ostream& os) const; 62200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void DumpStack(std::ostream& os) const 623b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 624b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 625d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes 626accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes // Out-of-line conveniences for debugging in gdb. 627498508c1187dc07d3eae5476784cde20f5224d93Elliott Hughes static Thread* CurrentFromGdb(); // Like Thread::Current. 62800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Like Thread::Dump(std::cerr). 629b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers void DumpFromGdb() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 630accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes 63193e74e8d879270071c3aa163f8495ada8d21f42fElliott Hughes static void* CreateCallback(void* arg); 63293e74e8d879270071c3aa163f8495ada8d21f42fElliott Hughes 633120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers void HandleUncaughtExceptions(); 634120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers void RemoveFromThreadGroup(); 635accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes 636120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers void Init(ThreadList*, JavaVMExt*) EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_); 6375d76c435082332ef79a22962386fa92a0870e378Ian Rogers void InitCardTable(); 638b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers void InitCpu(); 6393ea4ec5629613013ad9b0d7a69abdb94491ac46fbuzbee void InitFunctionPointers(); 640caabb1b77b4a55eb1bb45ebcd3071c9ea01dd3cfBrian Carlstrom void InitTid(); 641caabb1b77b4a55eb1bb45ebcd3071c9ea01dd3cfBrian Carlstrom void InitPthreadKeySelf(); 642be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes void InitStackHwm(); 643be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 644c604d731730b43231f63040c8db1d58304da0cf3Ian Rogers void NotifyLocked(Thread* self) EXCLUSIVE_LOCKS_REQUIRED(wait_mutex_); 6455f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes 646be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static void ThreadExitCallback(void* arg); 647b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 6480399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // TLS key used to retrieve the Thread*. 6490399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers static pthread_key_t pthread_key_self_; 6500399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 65100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Used to notify threads that they should attempt to resume, they will suspend again if 65200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // their suspend count is > 0. 653c604d731730b43231f63040c8db1d58304da0cf3Ian Rogers static ConditionVariable* resume_cond_ GUARDED_BY(Locks::thread_suspend_count_lock_); 65400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 6550399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // --- Frequently accessed fields first for short offsets --- 6560399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 657474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers // 32 bits of atomically changed state and flags. Keeping as 32 bits allows and atomic CAS to 658474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers // change from being Suspended to Runnable without a suspend request occurring. 65930e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers union StateAndFlags { 660df1ce91ba97bc79a0637e5504b39318fb1c9f577Ian Rogers struct PACKED(4) { 66130e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers // Bitfield of flag values. Must be changed atomically so that flag values aren't lost. See 66230e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers // ThreadFlags for bit field meanings. 66330e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers volatile uint16_t flags; 66430e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers // Holds the ThreadState. May be changed non-atomically between Suspended (ie not Runnable) 66530e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers // transitions. Changing to Runnable requires that the suspend_request be part of the atomic 66630e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers // operation. If a thread is suspended and a suspend_request is present, a thread may not 66730e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers // change to Runnable as a GC or other operation is in progress. 66801ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers volatile uint16_t state; 66930e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers } as_struct; 67001ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers volatile int32_t as_int; 671474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers }; 67230e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers union StateAndFlags state_and_flags_; 67330e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers COMPILE_ASSERT(sizeof(union StateAndFlags) == sizeof(int32_t), 674474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers sizeof_state_and_flags_and_int32_are_different); 675474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers 6760399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // A non-zero value is used to tell the current thread to enter a safe point 6770399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // at the next poll. 678b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers int suspend_count_ GUARDED_BY(Locks::thread_suspend_count_lock_); 6790399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 6800399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // The biased card table, see CardTable for details 6810399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers byte* card_table_; 6820399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 6830399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // The pending exception or NULL. 6840399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers Throwable* exception_; 6850399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 6860399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // The end of this thread's stack. This is the lowest safely-addressable address on the stack. 6870399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // We leave extra space so there's room for the code that throws StackOverflowError. 6880399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers byte* stack_end_; 6890399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 6900399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // The top of the managed stack often manipulated directly by compiler generated code. 6910399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers ManagedStack managed_stack_; 6920399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 6930399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Every thread may have an associated JNI environment 6940399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers JNIEnvExt* jni_env_; 6950399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 6960399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Initialized to "this". On certain architectures (such as x86) reading 6970399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // off of Thread::Current is easy but getting the address of Thread::Current 6980399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // is hard. This field can be read off of Thread::Current to give the address. 6990399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers Thread* self_; 7000399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 7010399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Our managed peer (an instance of java.lang.Thread). 702dbe6f4613ae0161b169f4fca8a616b0b393370abMathieu Chartier jobject peer_; 7030399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 7040399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // The "lowest addressable byte" of the stack 7050399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers byte* stack_begin_; 7060399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 7070399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Size of the stack 7080399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers size_t stack_size_; 7090399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 710dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes // Thin lock thread id. This is a small integer used by the thin lock implementation. 711dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes // This is not to be confused with the native thread's tid, nor is it the value returned 712dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes // by java.lang.Thread.getId --- this is a distinct value, used only for locking. One 713dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes // important difference between this id and the ids visible to managed code is that these 714dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes // ones get reused (to ensure that they fit in the number of bits available). 715dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes uint32_t thin_lock_id_; 716b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 717d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes // System thread id. 718d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes pid_t tid_; 719d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes 7208daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes // Guards the 'interrupted_' and 'wait_monitor_' members. 72100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers mutable Mutex* wait_mutex_ DEFAULT_MUTEX_ACQUIRED_AFTER; 72200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers ConditionVariable* wait_cond_ GUARDED_BY(wait_mutex_); 72300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Pointer to the monitor lock we're currently waiting on (or NULL). 72400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers Monitor* wait_monitor_ GUARDED_BY(wait_mutex_); 72500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Thread "interrupted" status; stays raised until queried or thrown. 72600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers bool32_t interrupted_ GUARDED_BY(wait_mutex_); 7275f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes // The next thread in the wait set this thread is part of. 7285f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes Thread* wait_next_; 7298e4aac52962d54cb4be2078b9cd95685e067133aElliott Hughes // If we're blocked in MonitorEnter, this is the object we're trying to lock. 7308e4aac52962d54cb4be2078b9cd95685e067133aElliott Hughes Object* monitor_enter_object_; 7315f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes 7325f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes friend class Monitor; 733dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes 734408f79aeb676251ba35667a64e86c20638d7cb0bIan Rogers // Top of linked list of stack indirect reference tables or NULL for none 735408f79aeb676251ba35667a64e86c20638d7cb0bIan Rogers StackIndirectReferenceTable* top_sirt_; 736b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 73769759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro Runtime* runtime_; 73869759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro 7390399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers RuntimeStats stats_; 74045a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 741edcc09c737b00462881f147602656739d029571eElliott Hughes // Needed to get the right ClassLoader in JNI_OnLoad, but also 742edcc09c737b00462881f147602656739d029571eElliott Hughes // useful for testing. 743365c10235438607541fa2259a5fec48061b90bd8Ian Rogers ClassLoader* class_loader_override_; 744c143c55718342519db5398e41dda31422cf16c79buzbee 745bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers // Thread local, lazily allocated, long jump context. Used to deliver exceptions. 74685d1545e985ac689db4bad7849880e843707c862Elliott Hughes Context* long_jump_context_; 747bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 748418dfe7849f45535b5388a91bd7a16cfc20a612bElliott Hughes // A boolean telling us whether we're recursively throwing OOME. 7495d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes bool32_t throwing_OutOfMemoryError_; 750726079d3e2e50854cd6ca4c393f4529a796dba58Elliott Hughes 7510399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // How much of 'suspend_count_' is by request of the debugger, used to set things right 7520399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // when the debugger detaches. Must be <= suspend_count_. 753b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers int debug_suspend_count_ GUARDED_BY(Locks::thread_suspend_count_lock_); 7540399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 755475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes // JDWP invoke-during-breakpoint support. 756475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes DebugInvokeReq* debug_invoke_req_; 757475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes 758725a957985171d712d5c048cc3d00ff14968784bjeffhao // Additional stack used by method instrumentation to store method and return pc values. 759e343b76af81a005ef64f5e75a555389fd9147dabjeffhao // Stored as a pointer since std::vector is not PACKED. 760725a957985171d712d5c048cc3d00ff14968784bjeffhao std::vector<InstrumentationStackFrame>* instrumentation_stack_; 761e343b76af81a005ef64f5e75a555389fd9147dabjeffhao 762899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughes // A cached copy of the java.lang.Thread's name. 763899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughes std::string* name_; 764899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughes 76552673ffae0025d86f4023735581f19ebcc477487Ian Rogers // Is the thread a daemon? 7665d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes const bool32_t daemon_; 76752673ffae0025d86f4023735581f19ebcc477487Ian Rogers 7680d39c12238499ca9ccc34d1532c443335e7c1044Elliott Hughes // A cached pthread_t for the pthread underlying this Thread*. 7690d39c12238499ca9ccc34d1532c443335e7c1044Elliott Hughes pthread_t pthread_self_; 7700d39c12238499ca9ccc34d1532c443335e7c1044Elliott Hughes 77100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Support for Mutex lock hierarchy bug detection. 77200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers BaseMutex* held_mutexes_[kMaxMutexLevel + 1]; 773ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes 7740399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // A positive value implies we're in a region where thread suspension isn't expected. 7750399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers uint32_t no_thread_suspension_; 77652673ffae0025d86f4023735581f19ebcc477487Ian Rogers 77752673ffae0025d86f4023735581f19ebcc477487Ian Rogers // Cause for last suspension. 77852673ffae0025d86f4023735581f19ebcc477487Ian Rogers const char* last_no_thread_suspension_cause_; 7795d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes 780858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier // Pending checkpoint functions. 7810e4627e593bc39f8e3d89c31f8977d55054c07ccMathieu Chartier Closure* checkpoint_function_; 782858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier 783a32a6fd4a781262dff4fec102da053d16b7ef6c0Ian Rogers public: 784a32a6fd4a781262dff4fec102da053d16b7ef6c0Ian Rogers // Runtime support function pointers 7856a607ad0902f3b8478e95d0b6b3e63a538571a3fElliott Hughes // TODO: move this near the top, since changing its offset requires all oats to be recompiled! 78657b86d47b66322693a070185fadfb43cb9c12eabIan Rogers EntryPoints entrypoints_; 787a32a6fd4a781262dff4fec102da053d16b7ef6c0Ian Rogers 788a32a6fd4a781262dff4fec102da053d16b7ef6c0Ian Rogers private: 7896a607ad0902f3b8478e95d0b6b3e63a538571a3fElliott Hughes // How many times has our pthread key's destructor been called? 7906a607ad0902f3b8478e95d0b6b3e63a538571a3fElliott Hughes uint32_t thread_exit_check_count_; 7916a607ad0902f3b8478e95d0b6b3e63a538571a3fElliott Hughes 79222f454c7d349c439c774c5d79b32514b190fd531Ian Rogers friend class ScopedThreadStateChange; 79322f454c7d349c439c774c5d79b32514b190fd531Ian Rogers 7940e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro DISALLOW_COPY_AND_ASSIGN(Thread); 7950e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro}; 796bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 797330304de14dc7118b45b8e7b5bd11a172fa61701Elliott Hughesstd::ostream& operator<<(std::ostream& os, const Thread& thread); 79834e069606d6f1698cd3c33b39e72b79ae27e1c7bElliott Hughesstd::ostream& operator<<(std::ostream& os, const ThreadState& state); 7990e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 8000e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro} // namespace art 8010e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 8020e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro#endif // ART_SRC_THREAD_H_ 803