thread.h revision a8cd9f4a849835af7856f9c9782ea59e11ddef85
10e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro// Copyright 2011 Google Inc. All Rights Reserved. 20e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 30e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro#ifndef ART_SRC_THREAD_H_ 40e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro#define ART_SRC_THREAD_H_ 50e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 6b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro#include <pthread.h> 7b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers#include <list> 8b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 9578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "globals.h" 10578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "logging.h" 11578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "macros.h" 12b765be0d656c3073402693aeaf64e95a0e49f218Brian Carlstrom#include "mem_map.h" 13578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "offsets.h" 14578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "runtime.h" 150e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 16b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers#include "jni.h" 17b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 180e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapironamespace art { 190e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 20a40f9bc48afe3a9d38be2fa298fece13ed82ba28Brian Carlstromclass Method; 210e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiroclass Object; 22b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiroclass Runtime; 23b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogersclass StackHandleBlock; 240e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiroclass Thread; 25b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiroclass ThreadList; 260e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 270e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiroclass Mutex { 280e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro public: 290e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro virtual ~Mutex() {} 300e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 31b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro void Lock(); 320e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 33b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro bool TryLock(); 340e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 35b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro void Unlock(); 360e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 370e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro const char* GetName() { return name_; } 380e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 390e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro Thread* GetOwner() { return owner_; } 400e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 41b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro static Mutex* Create(const char* name); 42b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 430e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro public: // TODO: protected 440e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro void SetOwner(Thread* thread) { owner_ = thread; } 450e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 460e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro private: 4718c0753c1659629021b4becdaa3f6ea81aecce35Elliott Hughes explicit Mutex(const char* name) : name_(name), owner_(NULL) {} 4818c0753c1659629021b4becdaa3f6ea81aecce35Elliott Hughes 490e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro const char* name_; 500e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 510e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro Thread* owner_; 520e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 53b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro pthread_mutex_t lock_impl_; 54b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 550e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro DISALLOW_COPY_AND_ASSIGN(Mutex); 560e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro}; 570e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 580e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiroclass MutexLock { 590e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro public: 600e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro explicit MutexLock(Mutex *mu) : mu_(mu) { 610e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro mu_->Lock(); 620e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 630e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro ~MutexLock() { mu_->Unlock(); } 640e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro private: 650e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro Mutex* const mu_; 660e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro DISALLOW_COPY_AND_ASSIGN(MutexLock); 670e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro}; 680e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 69b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers// Stack handle blocks are allocated within the bridge frame between managed 70b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers// and native code. 71b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogersclass StackHandleBlock { 72b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers public: 73b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // Number of references contained within this SHB 74b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers size_t NumberOfReferences() { 75b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return number_of_references_; 76b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 77b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 78b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // Link to previous SHB or NULL 79b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StackHandleBlock* Link() { 80b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return link_; 81b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 82b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 83a8cd9f4a849835af7856f9c9782ea59e11ddef85Ian Rogers Object** Handles() { 84a8cd9f4a849835af7856f9c9782ea59e11ddef85Ian Rogers return handles_; 85a8cd9f4a849835af7856f9c9782ea59e11ddef85Ian Rogers } 86a8cd9f4a849835af7856f9c9782ea59e11ddef85Ian Rogers 87b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // Offset of length within SHB, used by generated code 88b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers static size_t NumberOfReferencesOffset() { 89b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return OFFSETOF_MEMBER(StackHandleBlock, number_of_references_); 90b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 91b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 92b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // Offset of link within SHB, used by generated code 93b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers static size_t LinkOffset() { 94b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return OFFSETOF_MEMBER(StackHandleBlock, link_); 95b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 96b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 97b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers private: 98b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StackHandleBlock() {} 99b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 100b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers size_t number_of_references_; 101b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StackHandleBlock* link_; 102b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 103a8cd9f4a849835af7856f9c9782ea59e11ddef85Ian Rogers // Fake array, really allocated and filled in by jni_compiler. 104a8cd9f4a849835af7856f9c9782ea59e11ddef85Ian Rogers Object* handles_[0]; 105a8cd9f4a849835af7856f9c9782ea59e11ddef85Ian Rogers 106b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers DISALLOW_COPY_AND_ASSIGN(StackHandleBlock); 107b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers}; 108b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 1096de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogersstruct NativeToManagedRecord { 1106de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers NativeToManagedRecord* link; 1116de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers void* last_top_of_managed_stack; 1126de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers}; 1136de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers 1140e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiroclass Thread { 1150e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro public: 116b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro enum State { 117b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro kUnknown = -1, 118b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro kNew, 119b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro kRunnable, 120b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro kBlocked, 121b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro kWaiting, 122b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro kTimedWaiting, 123b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers kNative, 124b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro kTerminated, 125b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro }; 126b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 12761e019d291583029c01b61b93bea750f2b663c37Carl Shapiro static const size_t kDefaultStackSize = 64 * KB; 12861e019d291583029c01b61b93bea750f2b663c37Carl Shapiro 12961e019d291583029c01b61b93bea750f2b663c37Carl Shapiro // Creates a new thread. 130b765be0d656c3073402693aeaf64e95a0e49f218Brian Carlstrom static Thread* Create(const Runtime* runtime); 13161e019d291583029c01b61b93bea750f2b663c37Carl Shapiro 13261e019d291583029c01b61b93bea750f2b663c37Carl Shapiro // Creates a new thread from the calling thread. 133515a5bc89282d6f910cae4d5852bb77124a47825Elliott Hughes static Thread* Attach(const Runtime* runtime); 134b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 135b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro static Thread* Current() { 136d0e7e777c412071a911dd2c008b20b7d879fd392Carl Shapiro void* thread = pthread_getspecific(Thread::pthread_key_self_); 137d0e7e777c412071a911dd2c008b20b7d879fd392Carl Shapiro return reinterpret_cast<Thread*>(thread); 1380e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 1390e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 140b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro uint32_t GetId() const { 141b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro return id_; 142b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 143b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 144b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro pid_t GetNativeId() const { 145b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro return native_id_; 1460e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 1470e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 1480e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro bool IsExceptionPending() const { 149b20a554613609dc372073d2ebd9fbc3925a429f5Elliott Hughes return exception_ != NULL; 1500e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 1510e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 1520e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro Object* GetException() const { 1530e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro return exception_; 1540e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 1550e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 1560e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro void SetException(Object* new_exception) { 1570e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro CHECK(new_exception != NULL); 1580e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro // TODO: CHECK(exception_ == NULL); 1590e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro exception_ = new_exception; // TODO 1600e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 1610e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 162a5b897eae4b6f9f9608faa9eada7ddf42bf1bfd2Elliott Hughes void ThrowNewException(const char* exception_class_name, const char* fmt, ...) 163a5b897eae4b6f9f9608faa9eada7ddf42bf1bfd2Elliott Hughes __attribute__ ((format(printf, 3, 4))); 164a5b897eae4b6f9f9608faa9eada7ddf42bf1bfd2Elliott Hughes 1650e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro void ClearException() { 1660e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro exception_ = NULL; 1670e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro } 1680e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 16945a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // Offset of exception within Thread, used by generated code 17045a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers static ThreadOffset ExceptionOffset() { 17145a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, exception_)); 17245a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers } 17345a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 174b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro void SetName(const char* name); 175b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 176b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro void Suspend(); 177b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 178b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro bool IsSuspended(); 179b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 180b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro void Resume(); 181b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 182b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro static bool Init(); 183b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 18469759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro Runtime* GetRuntime() const { 18569759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro return runtime_; 18669759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro } 18769759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro 188330304de14dc7118b45b8e7b5bd11a172fa61701Elliott Hughes State GetState() const { 189b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro return state_; 190b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 191b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 192b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro void SetState(State new_state) { 193b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro state_ = new_state; 194b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 195b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 19645a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers static ThreadOffset SuspendCountOffset() { 19745a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, suspend_count_)); 19845a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers } 19945a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 200b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // Offset of state within Thread, used by generated code 201b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers static ThreadOffset StateOffset() { 202b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, state_)); 203b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 204b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 205b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // JNI methods 20640ef99eb9dd91c2fa549f40973964529c927bb3cElliott Hughes JNIEnv* GetJniEnv() const { 207b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return jni_env_; 208b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 209b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 210b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // Offset of JNI environment within Thread, used by generated code 211b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers static ThreadOffset JniEnvOffset() { 212b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, jni_env_)); 213b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 214b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 21545a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // Offset of top of managed stack address, used by generated code 21645a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers static ThreadOffset TopOfManagedStackOffset() { 21745a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, top_of_managed_stack_)); 21845a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers } 21945a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 220b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // Offset of top stack handle block within Thread, used by generated code 221b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers static ThreadOffset TopShbOffset() { 222b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, top_shb_)); 223b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 224b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 225b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // Number of references allocated in StackHandleBlocks on this thread 226a8cd9f4a849835af7856f9c9782ea59e11ddef85Ian Rogers size_t NumShbHandles(); 227a8cd9f4a849835af7856f9c9782ea59e11ddef85Ian Rogers 228a8cd9f4a849835af7856f9c9782ea59e11ddef85Ian Rogers // Is the given obj in this thread's stack handle blocks? 229a8cd9f4a849835af7856f9c9782ea59e11ddef85Ian Rogers bool ShbContains(jobject obj); 230b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 23145a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // Offset of exception_entry_point_ within Thread, used by generated code 23245a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers static ThreadOffset ExceptionEntryPointOffset() { 23345a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, exception_entry_point_)); 23445a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers } 23545a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 23645a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers void RegisterExceptionEntryPoint(void (*handler)(Method**)) { 23745a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers exception_entry_point_ = handler; 23845a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers } 23945a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 24045a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // Offset of suspend_count_entry_point_ within Thread, used by generated code 24145a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers static ThreadOffset SuspendCountEntryPointOffset() { 24245a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers return ThreadOffset(OFFSETOF_MEMBER(Thread, suspend_count_entry_point_)); 24345a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers } 24445a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 24545a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers void RegisterSuspendCountEntryPoint(void (*handler)(Method**)) { 24645a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers suspend_count_entry_point_ = handler; 24745a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers } 24845a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 24945a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // Increasing the suspend count, will cause the thread to run to safepoint 25045a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers void IncrementSuspendCount() { suspend_count_++; } 25145a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers void DecrementSuspendCount() { suspend_count_--; } 25245a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 2536de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers // Linked list recording transitions from native to managed code 2546de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers void PushNativeToManagedRecord(NativeToManagedRecord* record) { 2556de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers record->last_top_of_managed_stack = top_of_managed_stack_; 2566de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers record->link = native_to_managed_record_; 2576de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers native_to_managed_record_ = record; 2586de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers top_of_managed_stack_ = NULL; 2596de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers } 2606de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers void PopNativeToManagedRecord(const NativeToManagedRecord& record) { 2616de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers native_to_managed_record_ = record.link; 2626de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers top_of_managed_stack_ = record.last_top_of_managed_stack; 2636de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers } 2646de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers 2650e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro private: 26640ef99eb9dd91c2fa549f40973964529c927bb3cElliott Hughes Thread() 267330304de14dc7118b45b8e7b5bd11a172fa61701Elliott Hughes : id_(1234), 2686de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers top_of_managed_stack_(NULL), 2696de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers native_to_managed_record_(NULL), 270330304de14dc7118b45b8e7b5bd11a172fa61701Elliott Hughes top_shb_(NULL), 271330304de14dc7118b45b8e7b5bd11a172fa61701Elliott Hughes jni_env_(NULL), 272330304de14dc7118b45b8e7b5bd11a172fa61701Elliott Hughes exception_(NULL), 273330304de14dc7118b45b8e7b5bd11a172fa61701Elliott Hughes suspend_count_(0) { 274df20fe0c097073f75f22d16e72fd3636a31d3ca1Ian Rogers } 27569759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro 276df20fe0c097073f75f22d16e72fd3636a31d3ca1Ian Rogers ~Thread() { 277df20fe0c097073f75f22d16e72fd3636a31d3ca1Ian Rogers delete jni_env_; 278b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers } 2790e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 280b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers void InitCpu(); 281b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 28269759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro // Managed thread id. 28369759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro uint32_t id_; 284b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 28545a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // Top of the managed stack, written out prior to the state transition from 28645a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // kRunnable to kNative. Uses include to give the starting point for scanning 28745a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // a managed stack when a thread is in native code. 28845a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers void* top_of_managed_stack_; 28945a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 2906de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers // A linked list (of stack allocated records) recording transitions from 2916de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers // native to managed code. 2926de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers NativeToManagedRecord* native_to_managed_record_; 2936de0860c491d390b7a53be436519ef2d9234c4c9Ian Rogers 294b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // Top of linked list of stack handle blocks or NULL for none 295b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers StackHandleBlock* top_shb_; 296b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 297b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers // Every thread may have an associated JNI environment 29840ef99eb9dd91c2fa549f40973964529c927bb3cElliott Hughes JNIEnv* jni_env_; 299b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers 300b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro State state_; 301b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 30269759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro // Native (kernel) thread id. 303b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro pid_t native_id_; 304b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 30569759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro // Native thread handle. 30661e019d291583029c01b61b93bea750f2b663c37Carl Shapiro pthread_t handle_; 3070e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 30869759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro // Initialized to "this". On certain architectures (such as x86) reading 30969759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro // off of Thread::Current is easy but getting the address of Thread::Current 31069759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro // is hard. This field can be read off of Thread::Current to give the address. 31169759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro Thread* self_; 31269759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro 31369759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro Runtime* runtime_; 31469759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro 31569759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro // The pending exception or NULL. 3160e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro Object* exception_; 3170e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 31845a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // A non-zero value is used to tell the current thread to enter a safe point 31945a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // at the next poll. 32045a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers int suspend_count_; 32145a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 322b765be0d656c3073402693aeaf64e95a0e49f218Brian Carlstrom // The memory mapping of the stack for non-attached threads. 323b765be0d656c3073402693aeaf64e95a0e49f218Brian Carlstrom scoped_ptr<MemMap> stack_; 324b765be0d656c3073402693aeaf64e95a0e49f218Brian Carlstrom 32569759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro // The inclusive base of the control stack. 32661e019d291583029c01b61b93bea750f2b663c37Carl Shapiro byte* stack_base_; 32769759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro 32869759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro // The exclusive limit of the control stack. 32961e019d291583029c01b61b93bea750f2b663c37Carl Shapiro byte* stack_limit_; 33061e019d291583029c01b61b93bea750f2b663c37Carl Shapiro 33169759eaa6fd4386f1e6d8748052ad221087b3476Carl Shapiro // TLS key used to retrieve the VM thread object. 332b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro static pthread_key_t pthread_key_self_; 333b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 33445a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // Entry point called when exception_ is set 33545a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers void (*exception_entry_point_)(Method** frame); 33645a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 33745a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers // Entry point called when suspend_count_ is non-zero 33845a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers void (*suspend_count_entry_point_)(Method** frame); 33945a76cb99104a222d6a9bd768a084893dcb7cf30Ian Rogers 3400e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro DISALLOW_COPY_AND_ASSIGN(Thread); 3410e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro}; 342330304de14dc7118b45b8e7b5bd11a172fa61701Elliott Hughesstd::ostream& operator<<(std::ostream& os, const Thread& thread); 343b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogersstd::ostream& operator<<(std::ostream& os, const Thread::State& state); 3440e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 345b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiroclass ThreadList { 346b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro public: 34761e019d291583029c01b61b93bea750f2b663c37Carl Shapiro static const int kMaxId = 0xFFFF; 34861e019d291583029c01b61b93bea750f2b663c37Carl Shapiro static const int kInvalidId = 0; 34961e019d291583029c01b61b93bea750f2b663c37Carl Shapiro static const int kMainId = 1; 35061e019d291583029c01b61b93bea750f2b663c37Carl Shapiro 35161e019d291583029c01b61b93bea750f2b663c37Carl Shapiro static ThreadList* Create(); 352b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 35361e019d291583029c01b61b93bea750f2b663c37Carl Shapiro ~ThreadList(); 354b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 355b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro void Register(Thread* thread); 356b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 357b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro void Unregister(Thread* thread); 358b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 359b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro void Lock() { 360b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro lock_->Lock(); 361b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 362b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 363b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro void Unlock() { 364b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro lock_->Unlock(); 365b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro }; 366b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 367b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro private: 368b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro ThreadList(); 369b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 370b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro std::list<Thread*> list_; 371b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 372b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro Mutex* lock_; 373b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 374b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro DISALLOW_COPY_AND_ASSIGN(ThreadList); 375b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro}; 376b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 377b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiroclass ThreadListLock { 378b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro public: 379b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro ThreadListLock(ThreadList* thread_list, Thread* current_thread) 380b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro : thread_list_(thread_list) { 381b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro if (current_thread == NULL) { // try to get it from TLS 382b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro current_thread = Thread::Current(); 383b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 384b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro Thread::State old_state; 385b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro if (current_thread != NULL) { 386b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro old_state = current_thread->GetState(); 387b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro current_thread->SetState(Thread::kWaiting); // TODO: VMWAIT 388b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } else { 389b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro // happens during VM shutdown 390b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro old_state = Thread::kUnknown; // TODO: something else 391b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 392b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro thread_list_->Lock(); 393b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro if (current_thread != NULL) { 394b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro current_thread->SetState(old_state); 395b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 396b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 397b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 398b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro ~ThreadListLock() { 399b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro thread_list_->Unlock(); 400b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 401b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 402b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro private: 403b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro ThreadList* thread_list_; 404b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 405b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro DISALLOW_COPY_AND_ASSIGN(ThreadListLock); 406b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro}; 407b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 4080e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro} // namespace art 4090e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro 4100e5d75d5ca2b8a44fab0c862276a466cbab39859Carl Shapiro#endif // ART_SRC_THREAD_H_ 411