thread.h revision 578bbdc684db8ed68e9fedbc678669d27fa68b6e
10e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro// Copyright 2011 Google Inc. All Rights Reserved. 20e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro// Author: cshapiro@google.com (Carl Shapiro) 30e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 40e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro#ifndef ART_SRC_THREAD_H_ 50e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro#define ART_SRC_THREAD_H_ 60e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 7b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro#include <pthread.h> 8b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers#include <list> 9b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 10578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "globals.h" 11578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "jni_internal.h" 12578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "logging.h" 13578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "macros.h" 14578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "object.h" 15578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "offsets.h" 16578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "runtime.h" 170e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 18b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers#include "jni.h" 19b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 200e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapironamespace art { 210e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 220e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiroclass Object; 23b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiroclass Runtime; 24b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogersclass StackHandleBlock; 250e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiroclass Thread; 26b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiroclass ThreadList; 270e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 280e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiroclass Mutex { 290e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro public: 300e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro virtual ~Mutex() {} 310e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 32b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro void Lock(); 330e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 34b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro bool TryLock(); 350e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 36b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro void Unlock(); 370e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 380e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro const char* GetName() { return name_; } 390e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 400e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro Thread* GetOwner() { return owner_; } 410e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 42b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro static Mutex* Create(const char* name); 43b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 440e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro public: // TODO: protected 450e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro explicit Mutex(const char* name) : name_(name), owner_(NULL) {} 460e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 470e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro void SetOwner(Thread* thread) { owner_ = thread; } 480e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 490e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro private: 500e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro const char* name_; 510e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 520e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro Thread* owner_; 530e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 54b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro pthread_mutex_t lock_impl_; 55b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 560e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro DISALLOW_COPY_AND_ASSIGN(Mutex); 570e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro}; 580e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 590e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiroclass MutexLock { 600e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro public: 610e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro explicit MutexLock(Mutex *mu) : mu_(mu) { 620e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro mu_->Lock(); 630e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 640e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro ~MutexLock() { mu_->Unlock(); } 650e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro private: 660e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro Mutex* const mu_; 670e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro DISALLOW_COPY_AND_ASSIGN(MutexLock); 680e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro}; 690e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 70b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers// Stack handle blocks are allocated within the bridge frame between managed 71b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers// and native code. 72b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogersclass StackHandleBlock { 73b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers public: 74b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // Number of references contained within this SHB 75b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers size_t NumberOfReferences() { 76b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return number_of_references_; 77b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 78b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 79b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // Link to previous SHB or NULL 80b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StackHandleBlock* Link() { 81b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return link_; 82b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 83b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 84b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // Offset of length within SHB, used by generated code 85b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers static size_t NumberOfReferencesOffset() { 86b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return OFFSETOF_MEMBER(StackHandleBlock, number_of_references_); 87b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 88b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 89b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // Offset of link within SHB, used by generated code 90b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers static size_t LinkOffset() { 91b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return OFFSETOF_MEMBER(StackHandleBlock, link_); 92b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 93b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 94b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers private: 95b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StackHandleBlock() {} 96b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 97b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers size_t number_of_references_; 98b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StackHandleBlock* link_; 99b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 100b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers DISALLOW_COPY_AND_ASSIGN(StackHandleBlock); 101b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers}; 102b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 1030e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiroclass Thread { 1040e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro public: 105b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro enum State { 106b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro kUnknown = -1, 107b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro kNew, 108b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro kRunnable, 109b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro kBlocked, 110b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro kWaiting, 111b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro kTimedWaiting, 112b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers kNative, 113b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro kTerminated, 114b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro }; 115b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 11661e019d291583029c01b61b93bea750f2b663c37Carl Shapiro static const size_t kDefaultStackSize = 64 * KB; 11761e019d291583029c01b61b93bea750f2b663c37Carl Shapiro 11861e019d291583029c01b61b93bea750f2b663c37Carl Shapiro // Creates a new thread. 11961e019d291583029c01b61b93bea750f2b663c37Carl Shapiro static Thread* Create(size_t stack_size); 12061e019d291583029c01b61b93bea750f2b663c37Carl Shapiro 12161e019d291583029c01b61b93bea750f2b663c37Carl Shapiro // Creates a new thread from the calling thread. 12261e019d291583029c01b61b93bea750f2b663c37Carl Shapiro static Thread* Attach(); 123b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 124b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro static Thread* Current() { 125d0e7e777c412071a911dd2c008b20b7d879fd392Carl Shapiro void* thread = pthread_getspecific(Thread::pthread_key_self_); 126d0e7e777c412071a911dd2c008b20b7d879fd392Carl Shapiro return reinterpret_cast<Thread*>(thread); 1270e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 1280e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 129b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro uint32_t GetId() const { 130b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro return id_; 131b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 132b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 133b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro pid_t GetNativeId() const { 134b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro return native_id_; 1350e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 1360e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 1370e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro bool IsExceptionPending() const { 1380e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro return false; // TODO exception_ != NULL; 1390e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 1400e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 1410e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro Object* GetException() const { 1420e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro return exception_; 1430e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 1440e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 1450e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro void SetException(Object* new_exception) { 1460e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro CHECK(new_exception != NULL); 1470e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro // TODO: CHECK(exception_ == NULL); 1480e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro exception_ = new_exception; // TODO 1490e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 1500e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 1510e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro void ClearException() { 1520e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro exception_ = NULL; 1530e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 1540e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 15545a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // Offset of exception within Thread, used by generated code 15645a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers static ThreadOffset ExceptionOffset() { 15745a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, exception_)); 15845a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers } 15945a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 160b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro void SetName(const char* name); 161b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 162b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro void Suspend(); 163b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 164b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro bool IsSuspended(); 165b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 166b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro void Resume(); 167b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 168b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro static bool Init(); 169b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 17069759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro Runtime* GetRuntime() const { 17169759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro return runtime_; 17269759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro } 17369759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro 174b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro State GetState() { 175b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro return state_; 176b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 177b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 178b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro void SetState(State new_state) { 179b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro state_ = new_state; 180b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 181b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 18245a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers static ThreadOffset SuspendCountOffset() { 18345a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, suspend_count_)); 18445a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers } 18545a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 186b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // Offset of state within Thread, used by generated code 187b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers static ThreadOffset StateOffset() { 188b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, state_)); 189b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 190b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 191b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // JNI methods 192df20fe0c097073f75f22d16e72fd3636a31d3ca1Ian Rogers JniEnvironment* GetJniEnv() const { 193b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return jni_env_; 194b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 195b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 196b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // Offset of JNI environment within Thread, used by generated code 197b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers static ThreadOffset JniEnvOffset() { 198b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, jni_env_)); 199b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 200b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 20145a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // Offset of top of managed stack address, used by generated code 20245a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers static ThreadOffset TopOfManagedStackOffset() { 20345a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, top_of_managed_stack_)); 20445a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers } 20545a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 206b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // Offset of top stack handle block within Thread, used by generated code 207b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers static ThreadOffset TopShbOffset() { 208b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, top_shb_)); 209b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 210b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 211b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // Number of references allocated in StackHandleBlocks on this thread 212b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers size_t NumShbHandles() { 213b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers size_t count = 0; 214b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers for (StackHandleBlock* cur = top_shb_; cur; cur = cur->Link()) { 215b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers count += cur->NumberOfReferences(); 216b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 217b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return count; 218b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 219b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 22045a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // Offset of exception_entry_point_ within Thread, used by generated code 22145a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers static ThreadOffset ExceptionEntryPointOffset() { 22245a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, exception_entry_point_)); 22345a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers } 22445a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 22545a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers void RegisterExceptionEntryPoint(void (*handler)(Method**)) { 22645a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers exception_entry_point_ = handler; 22745a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers } 22845a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 22945a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // Offset of suspend_count_entry_point_ within Thread, used by generated code 23045a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers static ThreadOffset SuspendCountEntryPointOffset() { 23145a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, suspend_count_entry_point_)); 23245a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers } 23345a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 23445a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers void RegisterSuspendCountEntryPoint(void (*handler)(Method**)) { 23545a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers suspend_count_entry_point_ = handler; 23645a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers } 23745a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 23845a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // Increasing the suspend count, will cause the thread to run to safepoint 23945a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers void IncrementSuspendCount() { suspend_count_++; } 24045a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers void DecrementSuspendCount() { suspend_count_--; } 24145a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 2420e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro private: 243b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers Thread() : 24445a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers id_(1234), top_shb_(NULL), exception_(NULL), suspend_count_(0) { 245df20fe0c097073f75f22d16e72fd3636a31d3ca1Ian Rogers jni_env_ = new JniEnvironment(); 246df20fe0c097073f75f22d16e72fd3636a31d3ca1Ian Rogers } 24769759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro 248df20fe0c097073f75f22d16e72fd3636a31d3ca1Ian Rogers ~Thread() { 249df20fe0c097073f75f22d16e72fd3636a31d3ca1Ian Rogers delete jni_env_; 250b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 2510e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 252b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers void InitCpu(); 253b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 25469759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro // Managed thread id. 25569759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro uint32_t id_; 256b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 25745a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // Top of the managed stack, written out prior to the state transition from 25845a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // kRunnable to kNative. Uses include to give the starting point for scanning 25945a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // a managed stack when a thread is in native code. 26045a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers void* top_of_managed_stack_; 26145a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 262b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // Top of linked list of stack handle blocks or NULL for none 263b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StackHandleBlock* top_shb_; 264b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 265b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // Every thread may have an associated JNI environment 266df20fe0c097073f75f22d16e72fd3636a31d3ca1Ian Rogers JniEnvironment* jni_env_; 267b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 268b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro State state_; 269b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 27069759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro // Native (kernel) thread id. 271b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro pid_t native_id_; 272b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 27369759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro // Native thread handle. 27461e019d291583029c01b61b93bea750f2b663c37Carl Shapiro pthread_t handle_; 2750e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 27669759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro // Initialized to "this". On certain architectures (such as x86) reading 27769759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro // off of Thread::Current is easy but getting the address of Thread::Current 27869759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro // is hard. This field can be read off of Thread::Current to give the address. 27969759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro Thread* self_; 28069759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro 28169759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro Runtime* runtime_; 28269759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro 28369759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro // The pending exception or NULL. 2840e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro Object* exception_; 2850e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 28645a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // A non-zero value is used to tell the current thread to enter a safe point 28745a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // at the next poll. 28845a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers int suspend_count_; 28945a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 29069759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro // The inclusive base of the control stack. 29161e019d291583029c01b61b93bea750f2b663c37Carl Shapiro byte* stack_base_; 29269759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro 29369759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro // The exclusive limit of the control stack. 29461e019d291583029c01b61b93bea750f2b663c37Carl Shapiro byte* stack_limit_; 29561e019d291583029c01b61b93bea750f2b663c37Carl Shapiro 29669759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro // TLS key used to retrieve the VM thread object. 297b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro static pthread_key_t pthread_key_self_; 298b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 29945a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // Entry point called when exception_ is set 30045a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers void (*exception_entry_point_)(Method** frame); 30145a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 30245a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // Entry point called when suspend_count_ is non-zero 30345a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers void (*suspend_count_entry_point_)(Method** frame); 30445a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 3050e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro DISALLOW_COPY_AND_ASSIGN(Thread); 3060e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro}; 307b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogersstd::ostream& operator<<(std::ostream& os, const Thread::State& state); 3080e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 309b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiroclass ThreadList { 310b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro public: 31161e019d291583029c01b61b93bea750f2b663c37Carl Shapiro static const int kMaxId = 0xFFFF; 31261e019d291583029c01b61b93bea750f2b663c37Carl Shapiro static const int kInvalidId = 0; 31361e019d291583029c01b61b93bea750f2b663c37Carl Shapiro static const int kMainId = 1; 31461e019d291583029c01b61b93bea750f2b663c37Carl Shapiro 31561e019d291583029c01b61b93bea750f2b663c37Carl Shapiro static ThreadList* Create(); 316b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 31761e019d291583029c01b61b93bea750f2b663c37Carl Shapiro ~ThreadList(); 318b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 319b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro void Register(Thread* thread); 320b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 321b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro void Unregister(Thread* thread); 322b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 323b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro void Lock() { 324b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro lock_->Lock(); 325b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 326b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 327b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro void Unlock() { 328b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro lock_->Unlock(); 329b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro }; 330b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 331b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro private: 332b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro ThreadList(); 333b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 334b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro std::list<Thread*> list_; 335b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 336b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro Mutex* lock_; 337b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 338b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro DISALLOW_COPY_AND_ASSIGN(ThreadList); 339b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro}; 340b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 341b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiroclass ThreadListLock { 342b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro public: 343b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro ThreadListLock(ThreadList* thread_list, Thread* current_thread) 344b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro : thread_list_(thread_list) { 345b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro if (current_thread == NULL) { // try to get it from TLS 346b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro current_thread = Thread::Current(); 347b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 348b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro Thread::State old_state; 349b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro if (current_thread != NULL) { 350b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro old_state = current_thread->GetState(); 351b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro current_thread->SetState(Thread::kWaiting); // TODO: VMWAIT 352b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } else { 353b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro // happens during VM shutdown 354b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro old_state = Thread::kUnknown; // TODO: something else 355b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 356b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro thread_list_->Lock(); 357b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro if (current_thread != NULL) { 358b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro current_thread->SetState(old_state); 359b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 360b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 361b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 362b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro ~ThreadListLock() { 363b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro thread_list_->Unlock(); 364b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 365b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 366b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro private: 367b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro ThreadList* thread_list_; 368b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 369b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro DISALLOW_COPY_AND_ASSIGN(ThreadListLock); 370b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro}; 371b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 3720e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro} // namespace art 3730e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 3740e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro#endif // ART_SRC_THREAD_H_ 375