+++ /dev/null
-/*
- * Copyright (C) 2007, 2009 Apple Inc. All rights reserved.
- * Copyright (C) 2007 Justin Haygood (jhaygood@reaktix.com)
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
- * its contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-#include "Threading.h"
-
-#if USE(PTHREADS)
-
-#include "CurrentTime.h"
-#include "HashMap.h"
-#include "MainThread.h"
-#include "RandomNumberSeed.h"
-#include "StdLibExtras.h"
-#include "ThreadIdentifierDataPthreads.h"
-#include "ThreadSpecific.h"
-#include "UnusedParam.h"
-#include <errno.h>
-
-#if !COMPILER(MSVC)
-#include <limits.h>
-#include <sched.h>
-#include <sys/time.h>
-#endif
-
-#if OS(ANDROID)
-#include "JNIUtility.h"
-#include "ThreadFunctionInvocation.h"
-#include <wtf/OwnPtr.h>
-#include <wtf/PassOwnPtr.h>
-#endif
-
-#if OS(MAC_OS_X) && !defined(BUILDING_ON_LEOPARD)
-#include <objc/objc-auto.h>
-#endif
-
-namespace WTF {
-
-typedef HashMap<ThreadIdentifier, pthread_t> ThreadMap;
-
-static Mutex* atomicallyInitializedStaticMutex;
-
-void clearPthreadHandleForIdentifier(ThreadIdentifier);
-
-static Mutex& threadMapMutex()
-{
- DEFINE_STATIC_LOCAL(Mutex, mutex, ());
- return mutex;
-}
-
-void initializeThreading()
-{
- if (atomicallyInitializedStaticMutex)
- return;
-
- atomicallyInitializedStaticMutex = new Mutex;
- threadMapMutex();
- initializeRandomNumberGenerator();
-}
-
-void lockAtomicallyInitializedStaticMutex()
-{
- ASSERT(atomicallyInitializedStaticMutex);
- atomicallyInitializedStaticMutex->lock();
-}
-
-void unlockAtomicallyInitializedStaticMutex()
-{
- atomicallyInitializedStaticMutex->unlock();
-}
-
-static ThreadMap& threadMap()
-{
- DEFINE_STATIC_LOCAL(ThreadMap, map, ());
- return map;
-}
-
-static ThreadIdentifier identifierByPthreadHandle(const pthread_t& pthreadHandle)
-{
- MutexLocker locker(threadMapMutex());
-
- ThreadMap::iterator i = threadMap().begin();
- for (; i != threadMap().end(); ++i) {
- if (pthread_equal(i->second, pthreadHandle))
- return i->first;
- }
-
- return 0;
-}
-
-static ThreadIdentifier establishIdentifierForPthreadHandle(const pthread_t& pthreadHandle)
-{
- ASSERT(!identifierByPthreadHandle(pthreadHandle));
-
- MutexLocker locker(threadMapMutex());
-
- static ThreadIdentifier identifierCount = 1;
-
- threadMap().add(identifierCount, pthreadHandle);
-
- return identifierCount++;
-}
-
-static pthread_t pthreadHandleForIdentifier(ThreadIdentifier id)
-{
- MutexLocker locker(threadMapMutex());
-
- return threadMap().get(id);
-}
-
-void clearPthreadHandleForIdentifier(ThreadIdentifier id)
-{
- MutexLocker locker(threadMapMutex());
-
- ASSERT(threadMap().contains(id));
-
- threadMap().remove(id);
-}
-
-#if OS(ANDROID)
-static void* runThreadWithRegistration(void* arg)
-{
- OwnPtr<ThreadFunctionInvocation> invocation = adoptPtr(static_cast<ThreadFunctionInvocation*>(arg));
- JavaVM* vm = JSC::Bindings::getJavaVM();
- JNIEnv* env;
- void* ret = 0;
- if (vm->AttachCurrentThread(&env, 0) == JNI_OK) {
- ret = invocation->function(invocation->data);
- vm->DetachCurrentThread();
- }
- return ret;
-}
-
-ThreadIdentifier createThreadInternal(ThreadFunction entryPoint, void* data, const char*)
-{
- pthread_t threadHandle;
-
- // On the Android platform, threads must be registered with the VM before they run.
- OwnPtr<ThreadFunctionInvocation> invocation = adoptPtr(new ThreadFunctionInvocation(entryPoint, data));
-
- if (pthread_create(&threadHandle, 0, runThreadWithRegistration, invocation.get())) {
- LOG_ERROR("Failed to create pthread at entry point %p with data %p", entryPoint, data);
- return 0;
- }
-
- // The thread will take ownership of invocation.
- invocation.leakPtr();
-
- return establishIdentifierForPthreadHandle(threadHandle);
-}
-#else
-ThreadIdentifier createThreadInternal(ThreadFunction entryPoint, void* data, const char*)
-{
- pthread_t threadHandle;
- if (pthread_create(&threadHandle, 0, entryPoint, data)) {
- LOG_ERROR("Failed to create pthread at entry point %p with data %p", entryPoint, data);
- return 0;
- }
-
- return establishIdentifierForPthreadHandle(threadHandle);
-}
-#endif
-
-void initializeCurrentThreadInternal(const char* threadName)
-{
-#if HAVE(PTHREAD_SETNAME_NP)
- pthread_setname_np(threadName);
-#else
- UNUSED_PARAM(threadName);
-#endif
-
-#if OS(MAC_OS_X) && !defined(BUILDING_ON_LEOPARD)
- // All threads that potentially use APIs above the BSD layer must be registered with the Objective-C
- // garbage collector in case API implementations use garbage-collected memory.
- objc_registerThreadWithCollector();
-#endif
-
- ThreadIdentifier id = identifierByPthreadHandle(pthread_self());
- ASSERT(id);
- ThreadIdentifierData::initialize(id);
-}
-
-int waitForThreadCompletion(ThreadIdentifier threadID, void** result)
-{
- ASSERT(threadID);
-
- pthread_t pthreadHandle = pthreadHandleForIdentifier(threadID);
- if (!pthreadHandle)
- return 0;
-
- int joinResult = pthread_join(pthreadHandle, result);
- if (joinResult == EDEADLK)
- LOG_ERROR("ThreadIdentifier %u was found to be deadlocked trying to quit", threadID);
-
- return joinResult;
-}
-
-void detachThread(ThreadIdentifier threadID)
-{
- ASSERT(threadID);
-
- pthread_t pthreadHandle = pthreadHandleForIdentifier(threadID);
- if (!pthreadHandle)
- return;
-
- pthread_detach(pthreadHandle);
-}
-
-void yield()
-{
- sched_yield();
-}
-
-ThreadIdentifier currentThread()
-{
- ThreadIdentifier id = ThreadIdentifierData::identifier();
- if (id)
- return id;
-
- // Not a WTF-created thread, ThreadIdentifier is not established yet.
- id = establishIdentifierForPthreadHandle(pthread_self());
- ThreadIdentifierData::initialize(id);
- return id;
-}
-
-Mutex::Mutex()
-{
- pthread_mutexattr_t attr;
- pthread_mutexattr_init(&attr);
- pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_NORMAL);
-
- pthread_mutex_init(&m_mutex, &attr);
-
- pthread_mutexattr_destroy(&attr);
-}
-
-Mutex::~Mutex()
-{
- pthread_mutex_destroy(&m_mutex);
-}
-
-void Mutex::lock()
-{
- int result = pthread_mutex_lock(&m_mutex);
- ASSERT_UNUSED(result, !result);
-}
-
-bool Mutex::tryLock()
-{
- int result = pthread_mutex_trylock(&m_mutex);
-
- if (result == 0)
- return true;
- if (result == EBUSY)
- return false;
-
- ASSERT_NOT_REACHED();
- return false;
-}
-
-void Mutex::unlock()
-{
- int result = pthread_mutex_unlock(&m_mutex);
- ASSERT_UNUSED(result, !result);
-}
-
-#if HAVE(PTHREAD_RWLOCK)
-ReadWriteLock::ReadWriteLock()
-{
- pthread_rwlock_init(&m_readWriteLock, NULL);
-}
-
-ReadWriteLock::~ReadWriteLock()
-{
- pthread_rwlock_destroy(&m_readWriteLock);
-}
-
-void ReadWriteLock::readLock()
-{
- int result = pthread_rwlock_rdlock(&m_readWriteLock);
- ASSERT_UNUSED(result, !result);
-}
-
-bool ReadWriteLock::tryReadLock()
-{
- int result = pthread_rwlock_tryrdlock(&m_readWriteLock);
-
- if (result == 0)
- return true;
- if (result == EBUSY || result == EAGAIN)
- return false;
-
- ASSERT_NOT_REACHED();
- return false;
-}
-
-void ReadWriteLock::writeLock()
-{
- int result = pthread_rwlock_wrlock(&m_readWriteLock);
- ASSERT_UNUSED(result, !result);
-}
-
-bool ReadWriteLock::tryWriteLock()
-{
- int result = pthread_rwlock_trywrlock(&m_readWriteLock);
-
- if (result == 0)
- return true;
- if (result == EBUSY || result == EAGAIN)
- return false;
-
- ASSERT_NOT_REACHED();
- return false;
-}
-
-void ReadWriteLock::unlock()
-{
- int result = pthread_rwlock_unlock(&m_readWriteLock);
- ASSERT_UNUSED(result, !result);
-}
-#endif // HAVE(PTHREAD_RWLOCK)
-
-ThreadCondition::ThreadCondition()
-{
- pthread_cond_init(&m_condition, NULL);
-}
-
-ThreadCondition::~ThreadCondition()
-{
- pthread_cond_destroy(&m_condition);
-}
-
-void ThreadCondition::wait(Mutex& mutex)
-{
- int result = pthread_cond_wait(&m_condition, &mutex.impl());
- ASSERT_UNUSED(result, !result);
-}
-
-bool ThreadCondition::timedWait(Mutex& mutex, double absoluteTime)
-{
- if (absoluteTime < currentTime())
- return false;
-
- if (absoluteTime > INT_MAX) {
- wait(mutex);
- return true;
- }
-
- int timeSeconds = static_cast<int>(absoluteTime);
- int timeNanoseconds = static_cast<int>((absoluteTime - timeSeconds) * 1E9);
-
- timespec targetTime;
- targetTime.tv_sec = timeSeconds;
- targetTime.tv_nsec = timeNanoseconds;
-
- return pthread_cond_timedwait(&m_condition, &mutex.impl(), &targetTime) == 0;
-}
-
-void ThreadCondition::signal()
-{
- int result = pthread_cond_signal(&m_condition);
- ASSERT_UNUSED(result, !result);
-}
-
-void ThreadCondition::broadcast()
-{
- int result = pthread_cond_broadcast(&m_condition);
- ASSERT_UNUSED(result, !result);
-}
-
-} // namespace WTF
-
-#endif // USE(PTHREADS)
projects / apple / javascriptcore.git / blobdiff