thread.h revision a77f0f68a59870ff027dad654fe31eb3fdaf3d5d
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) 131a77f0f68a59870ff027dad654fe31eb3fdaf3d5djeffhao EXCLUSIVE_LOCKS_REQUIRED(Locks::thread_list_lock_) 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) 135a77f0f68a59870ff027dad654fe31eb3fdaf3d5djeffhao EXCLUSIVE_LOCKS_REQUIRED(Locks::thread_list_lock_) 136b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 137b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 1388daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes 13928fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes // Translates 172 to pAllocArrayFromCode and so on. 14028fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes static void DumpThreadOffset(std::ostream& os, uint32_t offset, size_t size_of_pointers); 14128fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes 14200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Dumps a one-line summary of thread state (used for operator<<). 14300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void ShortDump(std::ostream& os) const; 14400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 14500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Dumps the detailed thread state and the thread stack (used for SIGQUIT). 14600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void Dump(std::ostream& os) const 147b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 148b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 149a09576416788b916095739e43a16917e7948f3a4Elliott Hughes 150abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes // Dumps the SIGQUIT per-thread header. 'thread' can be NULL for a non-attached thread, in which 151abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes // case we use 'tid' to identify the thread, and we'll include as much information as we can. 15200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers static void DumpState(std::ostream& os, const Thread* thread, pid_t tid) 153cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 154cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 155abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes 156474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers ThreadState GetState() const { 15730e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers return static_cast<ThreadState>(state_and_flags_.as_struct.state); 1580cfe1fb7060576d047f7f894fc0d8b87de84fcabIan Rogers } 1590cfe1fb7060576d047f7f894fc0d8b87de84fcabIan Rogers 160474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers ThreadState SetState(ThreadState new_state); 1618d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes 16281d425b0b232962441616f8b14f73620bffef5e5Ian Rogers int GetSuspendCount() const EXCLUSIVE_LOCKS_REQUIRED(Locks::thread_suspend_count_lock_) { 16300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers return suspend_count_; 16452673ffae0025d86f4023735581f19ebcc477487Ian Rogers } 16552673ffae0025d86f4023735581f19ebcc477487Ian Rogers 16681d425b0b232962441616f8b14f73620bffef5e5Ian Rogers int GetDebugSuspendCount() const EXCLUSIVE_LOCKS_REQUIRED(Locks::thread_suspend_count_lock_) { 16700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers return debug_suspend_count_; 16800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 16900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 170858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier bool IsSuspended() const { 171858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier union StateAndFlags state_and_flags = state_and_flags_; 172858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier return state_and_flags.as_struct.state != kRunnable && 173858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier (state_and_flags.as_struct.flags & kSuspendRequest) != 0; 17400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 17500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 17601ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers void ModifySuspendCount(Thread* self, int delta, bool for_debugger) 177b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers EXCLUSIVE_LOCKS_REQUIRED(Locks::thread_suspend_count_lock_); 17800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 1790e4627e593bc39f8e3d89c31f8977d55054c07ccMathieu Chartier bool RequestCheckpoint(Closure* function); 180858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier 18100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Called when thread detected that the thread_suspend_count_ was non-zero. Gives up share of 18200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // mutator_lock_ and waits until it is resumed and thread_suspend_count_ is zero. 1839da7f59c9059397182b9a97e898a42ec06d4d646Ian Rogers void FullSuspendCheck() 184b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 185b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 18600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 18700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Transition from non-runnable to runnable state acquiring share on mutator_lock_. 18800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers ThreadState TransitionFromSuspendedToRunnable() 189b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 190b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCK_FUNCTION(Locks::mutator_lock_); 19100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 19200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Transition from runnable into a state where mutator privileges are denied. Releases share of 19300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // mutator lock. 19400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void TransitionFromRunnableToSuspended(ThreadState new_state) 195b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 196b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers UNLOCK_FUNCTION(Locks::mutator_lock_); 197038a806df72f884d22283a84a31c9a1d35ba1fdfElliott Hughes 19800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Wait for a debugger suspension on the thread associated with the given peer. Returns the 19900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // thread on success, else NULL. If the thread should be suspended then request_suspension should 20000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // be true on entry. If the suspension times out then *timeout is set to true. 20100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers static Thread* SuspendForDebugger(jobject peer, bool request_suspension, bool* timeout) 202b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::mutator_lock_, 203b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers Locks::thread_list_lock_, 204b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers Locks::thread_suspend_count_lock_); 2050cfe1fb7060576d047f7f894fc0d8b87de84fcabIan Rogers 2060399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Once called thread suspension will cause an assertion failure. 2070399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers#ifndef NDEBUG 20852673ffae0025d86f4023735581f19ebcc477487Ian Rogers const char* StartAssertNoThreadSuspension(const char* cause) { 20952673ffae0025d86f4023735581f19ebcc477487Ian Rogers CHECK(cause != NULL); 21052673ffae0025d86f4023735581f19ebcc477487Ian Rogers const char* previous_cause = last_no_thread_suspension_cause_; 2110399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers no_thread_suspension_++; 21252673ffae0025d86f4023735581f19ebcc477487Ian Rogers last_no_thread_suspension_cause_ = cause; 21352673ffae0025d86f4023735581f19ebcc477487Ian Rogers return previous_cause; 2140399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 21552673ffae0025d86f4023735581f19ebcc477487Ian Rogers#else 21652673ffae0025d86f4023735581f19ebcc477487Ian Rogers const char* StartAssertNoThreadSuspension(const char* cause) { 21752673ffae0025d86f4023735581f19ebcc477487Ian Rogers CHECK(cause != NULL); 21852673ffae0025d86f4023735581f19ebcc477487Ian Rogers return NULL; 21952673ffae0025d86f4023735581f19ebcc477487Ian Rogers } 22052673ffae0025d86f4023735581f19ebcc477487Ian Rogers#endif 22152673ffae0025d86f4023735581f19ebcc477487Ian Rogers 2220399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // End region where no thread suspension is expected. 2230399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers#ifndef NDEBUG 22452673ffae0025d86f4023735581f19ebcc477487Ian Rogers void EndAssertNoThreadSuspension(const char* old_cause) { 22552673ffae0025d86f4023735581f19ebcc477487Ian Rogers CHECK(old_cause != NULL || no_thread_suspension_ == 1); 22652673ffae0025d86f4023735581f19ebcc477487Ian Rogers CHECK_GT(no_thread_suspension_, 0U); 2270399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers no_thread_suspension_--; 22852673ffae0025d86f4023735581f19ebcc477487Ian Rogers last_no_thread_suspension_cause_ = old_cause; 22952673ffae0025d86f4023735581f19ebcc477487Ian Rogers } 23052673ffae0025d86f4023735581f19ebcc477487Ian Rogers#else 23152673ffae0025d86f4023735581f19ebcc477487Ian Rogers void EndAssertNoThreadSuspension(const char*) { 2320399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 23352673ffae0025d86f4023735581f19ebcc477487Ian Rogers#endif 2340399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 23500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 23600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers#ifndef NDEBUG 23700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void AssertThreadSuspensionIsAllowable(bool check_locks = true) const; 23800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers#else 23900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void AssertThreadSuspensionIsAllowable(bool check_locks = true) const { 240e0f0cb3d855cb5e926452b5e1ec8457adc4e454eMathieu Chartier UNUSED(check_locks); // Keep GCC happy about unused parameters. 2410399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 24200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers#endif 2430399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 24400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers bool IsDaemon() const { 24500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers return daemon_; 24600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 24700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 2485f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes bool HoldsLock(Object*); 2495f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes 2508daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes /* 2518daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * Changes the priority of this thread to match that of the java.lang.Thread object. 2528daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * 2538daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * We map a priority value from 1-10 to Linux "nice" values, where lower 2548daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * numbers indicate higher priority. 2558daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes */ 2568daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes void SetNativePriority(int newPriority); 2578daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes 2588daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes /* 2598daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * Returns the thread priority for the current thread by querying the system. 2608daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * This is useful when attaching a thread through JNI. 2618daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * 2628daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes * Returns a value from 1 to 10 (compatible with java.lang.Thread values). 2638daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes */ 2648daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes static int GetNativePriority(); 2658daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes 266dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes uint32_t GetThinLockId() const { 267dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes return thin_lock_id_; 268b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 269b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 270d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes pid_t GetTid() const { 271d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes return tid_; 272d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes } 273e27955ca3ca960928d4dbd6cb79711fce06950b3Elliott Hughes 274ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes // Returns the java.lang.Thread's name, or NULL if this Thread* doesn't have a peer. 27500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers String* GetThreadName(const ScopedObjectAccessUnchecked& ts) const 276b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 277899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughes 278ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes // Sets 'name' to the java.lang.Thread's name. This requires no transition to managed code, 279ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes // allocation, or locking. 280ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes void GetThreadName(std::string& name) const; 281ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes 282899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughes // Sets the thread's name. 283b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers void SetThreadName(const char* name) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 284fc86162ce2a3467acb690e18cc8bd9b3daafc606Elliott Hughes 285cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers Object* GetPeer() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 286cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers CHECK(jpeer_ == NULL); 287cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers return opeer_; 2888daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes } 2898daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes 29000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers bool HasPeer() const { 291cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers CHECK(jpeer_ == NULL); 292cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers return opeer_ != NULL; 29300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 29400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 2959d5ccec86d60c9ddd811836b9a2bc28d0b3d11feElliott Hughes RuntimeStats* GetStats() { 2969d5ccec86d60c9ddd811836b9a2bc28d0b3d11feElliott Hughes return &stats_; 2979d5ccec86d60c9ddd811836b9a2bc28d0b3d11feElliott Hughes } 2989d5ccec86d60c9ddd811836b9a2bc28d0b3d11feElliott Hughes 2997dc5166ea740359d381097a7ab382c1dd404055fElliott Hughes bool IsStillStarting() const; 3007dc5166ea740359d381097a7ab382c1dd404055fElliott Hughes 3010e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro bool IsExceptionPending() const { 302474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers bool result = ReadFlag(kExceptionPending); 303474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers DCHECK_EQ(result, exception_ != NULL); 304474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers return result; 3050e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 3060e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 307b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers Throwable* GetException() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 3080e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro return exception_; 3090e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 3100e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 31100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void AssertNoPendingException() const; 31200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 313474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers void SetException(Throwable* new_exception) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 3140cfe1fb7060576d047f7f894fc0d8b87de84fcabIan Rogers CHECK(new_exception != NULL); 315474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers // TODO: DCHECK(!IsExceptionPending()); 316474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers exception_ = new_exception; 317474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers AtomicSetFlag(kExceptionPending); 318474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers DCHECK(IsExceptionPending()); 3190cfe1fb7060576d047f7f894fc0d8b87de84fcabIan Rogers } 3200cfe1fb7060576d047f7f894fc0d8b87de84fcabIan Rogers 3210cfe1fb7060576d047f7f894fc0d8b87de84fcabIan Rogers void ClearException() { 3220cfe1fb7060576d047f7f894fc0d8b87de84fcabIan Rogers exception_ = NULL; 323474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers AtomicClearFlag(kExceptionPending); 324474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers DCHECK(!IsExceptionPending()); 325a09576416788b916095739e43a16917e7948f3a4Elliott Hughes } 326a09576416788b916095739e43a16917e7948f3a4Elliott Hughes 32794d6df471a406a03bb1afba8ca3ae9c0fbf366b5jeffhao void DeliverException(Throwable* exception) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 32894d6df471a406a03bb1afba8ca3ae9c0fbf366b5jeffhao if (exception == NULL) { 32994d6df471a406a03bb1afba8ca3ae9c0fbf366b5jeffhao ThrowNewException("Ljava/lang/NullPointerException;", "throw with null exception"); 33094d6df471a406a03bb1afba8ca3ae9c0fbf366b5jeffhao } else { 33194d6df471a406a03bb1afba8ca3ae9c0fbf366b5jeffhao SetException(exception); 33294d6df471a406a03bb1afba8ca3ae9c0fbf366b5jeffhao } 33394d6df471a406a03bb1afba8ca3ae9c0fbf366b5jeffhao } 33494d6df471a406a03bb1afba8ca3ae9c0fbf366b5jeffhao 335bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers // Find catch block and perform long jump to appropriate exception handle 33694d6df471a406a03bb1afba8ca3ae9c0fbf366b5jeffhao void QuickDeliverException() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 337bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 338bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers Context* GetLongJumpContext(); 3390399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers void ReleaseLongJumpContext(Context* context) { 3400399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers DCHECK(long_jump_context_ == NULL); 3410399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers long_jump_context_ = context; 3421a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao } 3431a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao 34466f19258f9728d4ffe026074d8fd429d639802faMathieu Chartier AbstractMethod* GetCurrentMethod(uint32_t* dex_pc = NULL, size_t* frame_id = NULL) const 345b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 3460399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 347bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers void SetTopOfStack(void* stack, uintptr_t pc) { 34866f19258f9728d4ffe026074d8fd429d639802faMathieu Chartier AbstractMethod** top_method = reinterpret_cast<AbstractMethod**>(stack); 3490399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers managed_stack_.SetTopQuickFrame(top_method); 3500399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers managed_stack_.SetTopQuickFramePc(pc); 3510e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 3520e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 3530399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers bool HasManagedStack() const { 3540399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return managed_stack_.GetTopQuickFrame() != NULL || managed_stack_.GetTopShadowFrame() != NULL; 355bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers } 356bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 357a4f94740f9d66b21f4bcd3a225c434aa29cfa323Elliott Hughes // If 'msg' is NULL, no detail message is set. 35800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void ThrowNewException(const char* exception_class_descriptor, const char* msg) 359b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 3605cb5ad27944efb08d4556b3c0d362302e37e832bElliott Hughes 361a4f94740f9d66b21f4bcd3a225c434aa29cfa323Elliott Hughes // If 'msg' is NULL, no detail message is set. An exception must be pending, and will be 362a4f94740f9d66b21f4bcd3a225c434aa29cfa323Elliott Hughes // used as the new exception's cause. 36300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void ThrowNewWrappedException(const char* exception_class_descriptor, const char* msg) 364b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 365a4f94740f9d66b21f4bcd3a225c434aa29cfa323Elliott Hughes 3665cb5ad27944efb08d4556b3c0d362302e37e832bElliott Hughes void ThrowNewExceptionF(const char* exception_class_descriptor, const char* fmt, ...) 36700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers __attribute__((format(printf, 3, 4))) 368b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 369a5b897eae4b6f9f9608faa9eada7ddf42bf1bfd2Elliott Hughes 37000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void ThrowNewExceptionV(const char* exception_class_descriptor, const char* fmt, va_list ap) 371b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 3724a2b41793d18d402286ae37e9de4fd392bc75a08Elliott Hughes 3732ced6a534157d5d963693346904389c19775d2daElliott Hughes // OutOfMemoryError is special, because we need to pre-allocate an instance. 3748a8b9cbe158ee13477f2381f164c519762a06fefElliott Hughes // Only the GC should call this. 375120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers void ThrowOutOfMemoryError(const char* msg) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 37679082e367845bbd68ec44ef2ddd1be8ef0e1550fElliott Hughes 3770399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers //QuickFrameIterator FindExceptionHandler(void* throw_pc, void** handler_pc); 3781a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao 37966f19258f9728d4ffe026074d8fd429d639802faMathieu Chartier void* FindExceptionHandlerInMethod(const AbstractMethod* method, 3801a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao void* throw_pc, 3811a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao const DexFile& dex_file, 3821a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao ClassLinker* class_linker); 383c143c55718342519db5398e41dda31422cf16c79buzbee 384be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static void Startup(); 385038a806df72f884d22283a84a31c9a1d35ba1fdfElliott Hughes static void FinishStartup(); 386c1674ed06662420213441ff2b818f2f71f9098dcElliott Hughes static void Shutdown(); 387b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 388b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // JNI methods 38969f5bc6759f256a146eefd8a7141d39fcc3b0421Elliott Hughes JNIEnvExt* GetJniEnv() const { 390b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return jni_env_; 391b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 392b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 393408f79aeb676251ba35667a64e86c20638d7cb0bIan Rogers // Convert a jobject into a Object* 394cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers Object* DecodeJObject(jobject obj) const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 395b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 3968daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes // Implements java.lang.Thread.interrupted. 39781d425b0b232962441616f8b14f73620bffef5e5Ian Rogers bool Interrupted(); 3988daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes // Implements java.lang.Thread.isInterrupted. 39981d425b0b232962441616f8b14f73620bffef5e5Ian Rogers bool IsInterrupted(); 40081d425b0b232962441616f8b14f73620bffef5e5Ian Rogers void Interrupt(); 40181d425b0b232962441616f8b14f73620bffef5e5Ian Rogers void Notify(); 4025f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes 403474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers ClassLoader* GetClassLoaderOverride() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 404c143c55718342519db5398e41dda31422cf16c79buzbee return class_loader_override_; 405c143c55718342519db5398e41dda31422cf16c79buzbee } 406c143c55718342519db5398e41dda31422cf16c79buzbee 407365c10235438607541fa2259a5fec48061b90bd8Ian Rogers void SetClassLoaderOverride(ClassLoader* class_loader_override) { 408c143c55718342519db5398e41dda31422cf16c79buzbee class_loader_override_ = class_loader_override; 409c143c55718342519db5398e41dda31422cf16c79buzbee } 410c143c55718342519db5398e41dda31422cf16c79buzbee 411aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers // Create the internal representation of a stack trace, that is more time 412aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers // and space efficient to compute than the StackTraceElement[] 41364b6d145fa53b8dfb07a8fc2426af13f155d5a4dIan Rogers jobject CreateInternalStackTrace(const ScopedObjectAccessUnchecked& soa) const 414b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 41501158d7a57c8321370667a6045220237d16e0da8Elliott Hughes 41601158d7a57c8321370667a6045220237d16e0da8Elliott Hughes // Convert an internal stack trace representation (returned by CreateInternalStackTrace) to a 41701158d7a57c8321370667a6045220237d16e0da8Elliott Hughes // StackTraceElement[]. If output_array is NULL, a new array is created, otherwise as many 41801158d7a57c8321370667a6045220237d16e0da8Elliott Hughes // frames as will fit are written into the given array. If stack_depth is non-NULL, it's updated 41901158d7a57c8321370667a6045220237d16e0da8Elliott Hughes // with the number of valid frames in the returned array. 42001158d7a57c8321370667a6045220237d16e0da8Elliott Hughes static jobjectArray InternalStackTraceToStackTraceElementArray(JNIEnv* env, jobject internal, 42101158d7a57c8321370667a6045220237d16e0da8Elliott Hughes jobjectArray output_array = NULL, int* stack_depth = NULL); 42255df06be4369f5d8ab5eb61a5d22809255171036Shih-wei Liao 42300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void VisitRoots(Heap::RootVisitor* visitor, void* arg) 424b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 4256f1c94968ada57da433debf8e2d1b38a80ceb510Mathieu Chartier 4266f1c94968ada57da433debf8e2d1b38a80ceb510Mathieu Chartier void VerifyRoots(Heap::VerifyRootVisitor* visitor, void* arg) 4276f1c94968ada57da433debf8e2d1b38a80ceb510Mathieu Chartier SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 428410c0c876f326e14c176a39ba21fc4dd3f7db8abElliott Hughes 429250455229aa0cc07bbd18174efe510bd52631a99jeffhao#if VERIFY_OBJECT_ENABLED 430b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers void VerifyStack() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 431250455229aa0cc07bbd18174efe510bd52631a99jeffhao#else 432b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers void VerifyStack() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_){} 433250455229aa0cc07bbd18174efe510bd52631a99jeffhao#endif 434250455229aa0cc07bbd18174efe510bd52631a99jeffhao 435be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes // 436be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes // Offsets of various members of native Thread class, used by compiled code. 437be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes // 438be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 439be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static ThreadOffset SelfOffset() { 440be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, self_)); 441be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 442be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 443be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static ThreadOffset ExceptionOffset() { 444be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, exception_)); 445be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 446be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 44707ec8e17c978e3bda0202693e6432b56349a5867Ian Rogers static ThreadOffset PeerOffset() { 44807ec8e17c978e3bda0202693e6432b56349a5867Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, opeer_)); 44907ec8e17c978e3bda0202693e6432b56349a5867Ian Rogers } 45007ec8e17c978e3bda0202693e6432b56349a5867Ian Rogers 45154e7df1896a4066cbb9fe6f72249829f0b8c49c6Elliott Hughes static ThreadOffset ThinLockIdOffset() { 452be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, thin_lock_id_)); 453be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 454be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 455be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static ThreadOffset CardTableOffset() { 456be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, card_table_)); 457be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 458be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 459474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers static ThreadOffset ThreadFlagsOffset() { 460474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, state_and_flags_)); 461be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 462be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 463932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers // Size of stack less any space reserved for stack overflow 464d752132c73072084a3def9257cca4fcee76047b6jeffhao size_t GetStackSize() const { 46530fab40ee5a07af6b8c3b6b0e9438071695a57f4Ian Rogers return stack_size_ - (stack_end_ - stack_begin_); 466932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers } 467932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers 468d752132c73072084a3def9257cca4fcee76047b6jeffhao byte* GetStackEnd() const { 469d752132c73072084a3def9257cca4fcee76047b6jeffhao return stack_end_; 470d752132c73072084a3def9257cca4fcee76047b6jeffhao } 471d752132c73072084a3def9257cca4fcee76047b6jeffhao 472932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers // Set the stack end to that to be used during a stack overflow 473b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers void SetStackEndForStackOverflow() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 474932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers 475932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers // Set the stack end to that to be used during regular execution 476932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers void ResetDefaultStackEnd() { 477932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers // Our stacks grow down, so we want stack_end_ to be near there, but reserving enough room 478932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers // to throw a StackOverflowError. 47930fab40ee5a07af6b8c3b6b0e9438071695a57f4Ian Rogers stack_end_ = stack_begin_ + kStackOverflowReservedBytes; 480932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers } 481932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers 482120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers bool IsHandlingStackOverflow() const { 483120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers return stack_end_ == stack_begin_; 484120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers } 485120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers 486449b4bdf90b527ef7a42faaf087494538e62363cElliott Hughes static ThreadOffset StackEndOffset() { 487449b4bdf90b527ef7a42faaf087494538e62363cElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, stack_end_)); 488be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 489be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 490be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static ThreadOffset JniEnvOffset() { 491be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, jni_env_)); 492be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 493be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 494be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static ThreadOffset TopOfManagedStackOffset() { 4950399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, managed_stack_) + 4960399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers ManagedStack::TopQuickFrameOffset()); 497be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 498be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 499bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers static ThreadOffset TopOfManagedStackPcOffset() { 5000399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, managed_stack_) + 5010399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers ManagedStack::TopQuickFramePcOffset()); 5020399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 5030399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 5040399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers const ManagedStack* GetManagedStack() const { 5050399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return &managed_stack_; 5060399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 5070399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 5080399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Linked list recording fragments of managed stack. 5090399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers void PushManagedStackFragment(ManagedStack* fragment) { 5100399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers managed_stack_.PushManagedStackFragment(fragment); 5110399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 5120399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers void PopManagedStackFragment(const ManagedStack& fragment) { 5130399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers managed_stack_.PopManagedStackFragment(fragment); 514bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers } 515bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 5160399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers ShadowFrame* PushShadowFrame(ShadowFrame* new_top_frame) { 5170399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return managed_stack_.PushShadowFrame(new_top_frame); 518de479be99328d2113bf483e082c9ecf235a34d69TDYa } 519de479be99328d2113bf483e082c9ecf235a34d69TDYa 520de479be99328d2113bf483e082c9ecf235a34d69TDYa ShadowFrame* PopShadowFrame() { 5210399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return managed_stack_.PopShadowFrame(); 522de479be99328d2113bf483e082c9ecf235a34d69TDYa } 523f7ad17e108b9357d7c94c6218a8521140a667f3dLogan Chien 524d668a06b5dcc3b0f7f788da4d756cd4ee6f1d0faTDYa static ThreadOffset TopShadowFrameOffset() { 5250399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, managed_stack_) + 5260399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers ManagedStack::TopShadowFrameOffset()); 527d668a06b5dcc3b0f7f788da4d756cd4ee6f1d0faTDYa } 528d668a06b5dcc3b0f7f788da4d756cd4ee6f1d0faTDYa 529ce4cc0d1818e872c1c7f3c3519a82259afd5c288TDYa // Number of references allocated in JNI ShadowFrames on this thread 530ce4cc0d1818e872c1c7f3c3519a82259afd5c288TDYa size_t NumJniShadowFrameReferences() const { 531ce4cc0d1818e872c1c7f3c3519a82259afd5c288TDYa return managed_stack_.NumJniShadowFrameReferences(); 5320399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 5330399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 5340399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Number of references in SIRTs on this thread 5350399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers size_t NumSirtReferences(); 5360399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 537ce4cc0d1818e872c1c7f3c3519a82259afd5c288TDYa // Number of references allocated in SIRTs & JNI shadow frames on this thread 5380399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers size_t NumStackReferences() { 539ce4cc0d1818e872c1c7f3c3519a82259afd5c288TDYa return NumSirtReferences() + NumJniShadowFrameReferences(); 5400399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers }; 5410399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 5420399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Is the given obj in this thread's stack indirect reference table? 543cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers bool SirtContains(jobject obj) const; 5440399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 5450399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers void SirtVisitRoots(Heap::RootVisitor* visitor, void* arg); 5460399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 5471f5393447b9f45be7918042d9ee7b521376de866Ian Rogers void PushSirt(StackIndirectReferenceTable* sirt) { 5481f5393447b9f45be7918042d9ee7b521376de866Ian Rogers sirt->SetLink(top_sirt_); 5491f5393447b9f45be7918042d9ee7b521376de866Ian Rogers top_sirt_ = sirt; 5501f5393447b9f45be7918042d9ee7b521376de866Ian Rogers } 5511f5393447b9f45be7918042d9ee7b521376de866Ian Rogers 5521f5393447b9f45be7918042d9ee7b521376de866Ian Rogers StackIndirectReferenceTable* PopSirt() { 5531f5393447b9f45be7918042d9ee7b521376de866Ian Rogers StackIndirectReferenceTable* sirt = top_sirt_; 5541f5393447b9f45be7918042d9ee7b521376de866Ian Rogers DCHECK(sirt != NULL); 5551f5393447b9f45be7918042d9ee7b521376de866Ian Rogers top_sirt_ = top_sirt_->GetLink(); 5561f5393447b9f45be7918042d9ee7b521376de866Ian Rogers return sirt; 5571f5393447b9f45be7918042d9ee7b521376de866Ian Rogers } 55840381fb9dc4b4cf274f1e58b2cdf4396202c6189Brian Carlstrom 559be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static ThreadOffset TopSirtOffset() { 560be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes return ThreadOffset(OFFSETOF_MEMBER(Thread, top_sirt_)); 561be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 562be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 563475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes DebugInvokeReq* GetInvokeReq() { 564475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes return debug_invoke_req_; 565475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes } 566475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes 567c0f0933249cf516b37717faa766e1e9808f7c1f8Elliott Hughes void SetDebuggerUpdatesEnabled(bool enabled); 568c0f0933249cf516b37717faa766e1e9808f7c1f8Elliott Hughes 569725a957985171d712d5c048cc3d00ff14968784bjeffhao const std::vector<InstrumentationStackFrame>* GetInstrumentationStack() const { 570725a957985171d712d5c048cc3d00ff14968784bjeffhao return instrumentation_stack_; 571e343b76af81a005ef64f5e75a555389fd9147dabjeffhao } 572e343b76af81a005ef64f5e75a555389fd9147dabjeffhao 573725a957985171d712d5c048cc3d00ff14968784bjeffhao bool IsInstrumentationStackEmpty() const { 574725a957985171d712d5c048cc3d00ff14968784bjeffhao return instrumentation_stack_->empty(); 575a9ef3fd82bebc6370fc3ddbb094988feb6c83022jeffhao } 576a9ef3fd82bebc6370fc3ddbb094988feb6c83022jeffhao 577725a957985171d712d5c048cc3d00ff14968784bjeffhao void PushInstrumentationStackFrame(const InstrumentationStackFrame& frame) { 578725a957985171d712d5c048cc3d00ff14968784bjeffhao instrumentation_stack_->push_back(frame); 579e343b76af81a005ef64f5e75a555389fd9147dabjeffhao } 580e343b76af81a005ef64f5e75a555389fd9147dabjeffhao 581725a957985171d712d5c048cc3d00ff14968784bjeffhao InstrumentationStackFrame PopInstrumentationStackFrame() { 582725a957985171d712d5c048cc3d00ff14968784bjeffhao InstrumentationStackFrame frame = instrumentation_stack_->back(); 583725a957985171d712d5c048cc3d00ff14968784bjeffhao instrumentation_stack_->pop_back(); 584e343b76af81a005ef64f5e75a555389fd9147dabjeffhao return frame; 585e343b76af81a005ef64f5e75a555389fd9147dabjeffhao } 586e343b76af81a005ef64f5e75a555389fd9147dabjeffhao 58781d425b0b232962441616f8b14f73620bffef5e5Ian Rogers BaseMutex* GetHeldMutex(LockLevel level) const { 58800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers return held_mutexes_[level]; 58900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 59000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 59181d425b0b232962441616f8b14f73620bffef5e5Ian Rogers void SetHeldMutex(LockLevel level, BaseMutex* mutex) { 59200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers held_mutexes_[level] = mutex; 59300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 594ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes 595858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier void RunCheckpointFunction() { 596858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier CHECK(checkpoint_function_ != NULL); 597858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier checkpoint_function_->Run(this); 598858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier } 599858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier 600858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier bool ReadFlag(ThreadFlag flag) const { 601858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier return (state_and_flags_.as_struct.flags & flag) != 0; 602858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier } 603858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier 604858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier void AtomicSetFlag(ThreadFlag flag); 605858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier 606858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier void AtomicClearFlag(ThreadFlag flag); 607858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier 6080e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro private: 6095d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes // We have no control over the size of 'bool', but want our boolean fields 6105d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes // to be 4-byte quantities. 6115d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes typedef uint32_t bool32_t; 6125d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes 61352673ffae0025d86f4023735581f19ebcc477487Ian Rogers explicit Thread(bool daemon); 614b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers ~Thread() LOCKS_EXCLUDED(Locks::mutator_lock_, 615b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers Locks::thread_suspend_count_lock_); 616c0f0933249cf516b37717faa766e1e9808f7c1f8Elliott Hughes void Destroy(); 617c0f0933249cf516b37717faa766e1e9808f7c1f8Elliott Hughes friend class ThreadList; // For ~Thread and Destroy. 6180e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 619365c10235438607541fa2259a5fec48061b90bd8Ian Rogers void CreatePeer(const char* name, bool as_daemon, jobject thread_group); 6205fe594f576225dd7d333835e39c448a71ea9b433Elliott Hughes friend class Runtime; // For CreatePeer. 6215fe594f576225dd7d333835e39c448a71ea9b433Elliott Hughes 622474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers // Avoid use, callers should use SetState. Used only by SignalCatcher::HandleSigQuit and ~Thread. 623474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers ThreadState SetStateUnsafe(ThreadState new_state) { 624474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers ThreadState old_state = GetState(); 62530e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers state_and_flags_.as_struct.state = new_state; 626c747cffa950b8398cb8844d47e2253214c855750Ian Rogers return old_state; 627c747cffa950b8398cb8844d47e2253214c855750Ian Rogers } 628474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers friend class SignalCatcher; // For SetStateUnsafe. 629c747cffa950b8398cb8844d47e2253214c855750Ian Rogers 630cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers void DumpState(std::ostream& os) const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 63100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers void DumpStack(std::ostream& os) const 632b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) 633b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 634d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes 635accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes // Out-of-line conveniences for debugging in gdb. 636498508c1187dc07d3eae5476784cde20f5224d93Elliott Hughes static Thread* CurrentFromGdb(); // Like Thread::Current. 63700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Like Thread::Dump(std::cerr). 638b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers void DumpFromGdb() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 639accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes 64093e74e8d879270071c3aa163f8495ada8d21f42fElliott Hughes static void* CreateCallback(void* arg); 64193e74e8d879270071c3aa163f8495ada8d21f42fElliott Hughes 642cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers void HandleUncaughtExceptions(ScopedObjectAccess& soa) 643cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 644cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers void RemoveFromThreadGroup(ScopedObjectAccess& soa) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 645accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes 646120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers void Init(ThreadList*, JavaVMExt*) EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_); 6475d76c435082332ef79a22962386fa92a0870e378Ian Rogers void InitCardTable(); 648b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers void InitCpu(); 6493ea4ec5629613013ad9b0d7a69abdb94491ac46fbuzbee void InitFunctionPointers(); 650caabb1b77b4a55eb1bb45ebcd3071c9ea01dd3cfBrian Carlstrom void InitTid(); 651caabb1b77b4a55eb1bb45ebcd3071c9ea01dd3cfBrian Carlstrom void InitPthreadKeySelf(); 652be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes void InitStackHwm(); 653be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 654c604d731730b43231f63040c8db1d58304da0cf3Ian Rogers void NotifyLocked(Thread* self) EXCLUSIVE_LOCKS_REQUIRED(wait_mutex_); 6555f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes 656be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes static void ThreadExitCallback(void* arg); 657b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 6580399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // TLS key used to retrieve the Thread*. 6590399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers static pthread_key_t pthread_key_self_; 6600399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 66100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Used to notify threads that they should attempt to resume, they will suspend again if 66200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // their suspend count is > 0. 663c604d731730b43231f63040c8db1d58304da0cf3Ian Rogers static ConditionVariable* resume_cond_ GUARDED_BY(Locks::thread_suspend_count_lock_); 66400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 6650399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // --- Frequently accessed fields first for short offsets --- 6660399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 667474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers // 32 bits of atomically changed state and flags. Keeping as 32 bits allows and atomic CAS to 668474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers // change from being Suspended to Runnable without a suspend request occurring. 66930e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers union StateAndFlags { 670df1ce91ba97bc79a0637e5504b39318fb1c9f577Ian Rogers struct PACKED(4) { 67130e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers // Bitfield of flag values. Must be changed atomically so that flag values aren't lost. See 67230e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers // ThreadFlags for bit field meanings. 67330e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers volatile uint16_t flags; 67430e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers // Holds the ThreadState. May be changed non-atomically between Suspended (ie not Runnable) 67530e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers // transitions. Changing to Runnable requires that the suspend_request be part of the atomic 67630e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers // operation. If a thread is suspended and a suspend_request is present, a thread may not 67730e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers // change to Runnable as a GC or other operation is in progress. 67801ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers volatile uint16_t state; 67930e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers } as_struct; 68001ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers volatile int32_t as_int; 681474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers }; 68230e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers union StateAndFlags state_and_flags_; 68330e173f6da202e4caa37ceb477e2fbbe09cec990Ian Rogers COMPILE_ASSERT(sizeof(union StateAndFlags) == sizeof(int32_t), 684474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers sizeof_state_and_flags_and_int32_are_different); 685474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers 6860399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // A non-zero value is used to tell the current thread to enter a safe point 6870399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // at the next poll. 688b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers int suspend_count_ GUARDED_BY(Locks::thread_suspend_count_lock_); 6890399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 6900399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // The biased card table, see CardTable for details 6910399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers byte* card_table_; 6920399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 6930399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // The pending exception or NULL. 6940399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers Throwable* exception_; 6950399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 6960399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // The end of this thread's stack. This is the lowest safely-addressable address on the stack. 6970399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // We leave extra space so there's room for the code that throws StackOverflowError. 6980399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers byte* stack_end_; 6990399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 7000399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // The top of the managed stack often manipulated directly by compiler generated code. 7010399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers ManagedStack managed_stack_; 7020399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 7030399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Every thread may have an associated JNI environment 7040399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers JNIEnvExt* jni_env_; 7050399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 7060399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Initialized to "this". On certain architectures (such as x86) reading 7070399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // off of Thread::Current is easy but getting the address of Thread::Current 7080399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // is hard. This field can be read off of Thread::Current to give the address. 7090399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers Thread* self_; 7100399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 711cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers // Our managed peer (an instance of java.lang.Thread). The jobject version is used during thread 712cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers // start up, until the thread is registered and the local opeer_ is used. 713cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers Object* opeer_; 714cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers jobject jpeer_; 7150399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 7160399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // The "lowest addressable byte" of the stack 7170399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers byte* stack_begin_; 7180399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 7190399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Size of the stack 7200399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers size_t stack_size_; 7210399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 722dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes // Thin lock thread id. This is a small integer used by the thin lock implementation. 723dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes // This is not to be confused with the native thread's tid, nor is it the value returned 724dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes // by java.lang.Thread.getId --- this is a distinct value, used only for locking. One 725dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes // important difference between this id and the ids visible to managed code is that these 726dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes // ones get reused (to ensure that they fit in the number of bits available). 727dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes uint32_t thin_lock_id_; 728b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 729d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes // System thread id. 730d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes pid_t tid_; 731d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes 7328daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes // Guards the 'interrupted_' and 'wait_monitor_' members. 73300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers mutable Mutex* wait_mutex_ DEFAULT_MUTEX_ACQUIRED_AFTER; 73400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers ConditionVariable* wait_cond_ GUARDED_BY(wait_mutex_); 73500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Pointer to the monitor lock we're currently waiting on (or NULL). 73600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers Monitor* wait_monitor_ GUARDED_BY(wait_mutex_); 73700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Thread "interrupted" status; stays raised until queried or thrown. 73800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers bool32_t interrupted_ GUARDED_BY(wait_mutex_); 7395f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes // The next thread in the wait set this thread is part of. 7405f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes Thread* wait_next_; 7418e4aac52962d54cb4be2078b9cd95685e067133aElliott Hughes // If we're blocked in MonitorEnter, this is the object we're trying to lock. 7428e4aac52962d54cb4be2078b9cd95685e067133aElliott Hughes Object* monitor_enter_object_; 7435f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes 7445f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes friend class Monitor; 745dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes 746408f79aeb676251ba35667a64e86c20638d7cb0bIan Rogers // Top of linked list of stack indirect reference tables or NULL for none 747408f79aeb676251ba35667a64e86c20638d7cb0bIan Rogers StackIndirectReferenceTable* top_sirt_; 748b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 74969759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro Runtime* runtime_; 75069759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro 7510399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers RuntimeStats stats_; 75245a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 753edcc09c737b00462881f147602656739d029571eElliott Hughes // Needed to get the right ClassLoader in JNI_OnLoad, but also 754edcc09c737b00462881f147602656739d029571eElliott Hughes // useful for testing. 755365c10235438607541fa2259a5fec48061b90bd8Ian Rogers ClassLoader* class_loader_override_; 756c143c55718342519db5398e41dda31422cf16c79buzbee 757bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers // Thread local, lazily allocated, long jump context. Used to deliver exceptions. 75885d1545e985ac689db4bad7849880e843707c862Elliott Hughes Context* long_jump_context_; 759bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 760418dfe7849f45535b5388a91bd7a16cfc20a612bElliott Hughes // A boolean telling us whether we're recursively throwing OOME. 7615d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes bool32_t throwing_OutOfMemoryError_; 762726079d3e2e50854cd6ca4c393f4529a796dba58Elliott Hughes 7630399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // How much of 'suspend_count_' is by request of the debugger, used to set things right 7640399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // when the debugger detaches. Must be <= suspend_count_. 765b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers int debug_suspend_count_ GUARDED_BY(Locks::thread_suspend_count_lock_); 7660399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 767475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes // JDWP invoke-during-breakpoint support. 768475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes DebugInvokeReq* debug_invoke_req_; 769475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes 770725a957985171d712d5c048cc3d00ff14968784bjeffhao // Additional stack used by method instrumentation to store method and return pc values. 771e343b76af81a005ef64f5e75a555389fd9147dabjeffhao // Stored as a pointer since std::vector is not PACKED. 772725a957985171d712d5c048cc3d00ff14968784bjeffhao std::vector<InstrumentationStackFrame>* instrumentation_stack_; 773e343b76af81a005ef64f5e75a555389fd9147dabjeffhao 774899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughes // A cached copy of the java.lang.Thread's name. 775899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughes std::string* name_; 776899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughes 77752673ffae0025d86f4023735581f19ebcc477487Ian Rogers // Is the thread a daemon? 7785d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes const bool32_t daemon_; 77952673ffae0025d86f4023735581f19ebcc477487Ian Rogers 7800d39c12238499ca9ccc34d1532c443335e7c1044Elliott Hughes // A cached pthread_t for the pthread underlying this Thread*. 7810d39c12238499ca9ccc34d1532c443335e7c1044Elliott Hughes pthread_t pthread_self_; 7820d39c12238499ca9ccc34d1532c443335e7c1044Elliott Hughes 78300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Support for Mutex lock hierarchy bug detection. 78400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers BaseMutex* held_mutexes_[kMaxMutexLevel + 1]; 785ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes 7860399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // A positive value implies we're in a region where thread suspension isn't expected. 7870399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers uint32_t no_thread_suspension_; 78852673ffae0025d86f4023735581f19ebcc477487Ian Rogers 78952673ffae0025d86f4023735581f19ebcc477487Ian Rogers // Cause for last suspension. 79052673ffae0025d86f4023735581f19ebcc477487Ian Rogers const char* last_no_thread_suspension_cause_; 7915d96a7168dd3e2a4acf1a947ef12efa8f82b95c0Elliott Hughes 792858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier // Pending checkpoint functions. 7930e4627e593bc39f8e3d89c31f8977d55054c07ccMathieu Chartier Closure* checkpoint_function_; 794858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier 795a32a6fd4a781262dff4fec102da053d16b7ef6c0Ian Rogers public: 796a32a6fd4a781262dff4fec102da053d16b7ef6c0Ian Rogers // Runtime support function pointers 7976a607ad0902f3b8478e95d0b6b3e63a538571a3fElliott Hughes // TODO: move this near the top, since changing its offset requires all oats to be recompiled! 79857b86d47b66322693a070185fadfb43cb9c12eabIan Rogers EntryPoints entrypoints_; 799a32a6fd4a781262dff4fec102da053d16b7ef6c0Ian Rogers 800a32a6fd4a781262dff4fec102da053d16b7ef6c0Ian Rogers private: 8016a607ad0902f3b8478e95d0b6b3e63a538571a3fElliott Hughes // How many times has our pthread key's destructor been called? 8026a607ad0902f3b8478e95d0b6b3e63a538571a3fElliott Hughes uint32_t thread_exit_check_count_; 8036a607ad0902f3b8478e95d0b6b3e63a538571a3fElliott Hughes 80422f454c7d349c439c774c5d79b32514b190fd531Ian Rogers friend class ScopedThreadStateChange; 80522f454c7d349c439c774c5d79b32514b190fd531Ian Rogers 8060e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro DISALLOW_COPY_AND_ASSIGN(Thread); 8070e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro}; 808bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 809330304de14dc7118b45b8e7b5bd11a172fa61701Elliott Hughesstd::ostream& operator<<(std::ostream& os, const Thread& thread); 81034e069606d6f1698cd3c33b39e72b79ae27e1c7bElliott Hughesstd::ostream& operator<<(std::ostream& os, const ThreadState& state); 8110e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 8120e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro} // namespace art 8130e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 8140e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro#endif // ART_SRC_THREAD_H_ 815