+++ /dev/null
-/*
- * Copyright (C) 2007 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 !ENABLE(SINGLE_THREADED)
-
-#include "CurrentTime.h"
-#include "HashMap.h"
-#include "MainThread.h"
-#include "RandomNumberSeed.h"
-
-#include <QCoreApplication>
-#include <QMutex>
-#include <QThread>
-#include <QWaitCondition>
-
-namespace WTF {
-
-class ThreadPrivate : public QThread {
-public:
- ThreadPrivate(ThreadFunction entryPoint, void* data);
- void run();
- void* getReturnValue() { return m_returnValue; }
-private:
- void* m_data;
- ThreadFunction m_entryPoint;
- void* m_returnValue;
-};
-
-ThreadPrivate::ThreadPrivate(ThreadFunction entryPoint, void* data)
- : m_data(data)
- , m_entryPoint(entryPoint)
- , m_returnValue(0)
-{
-}
-
-void ThreadPrivate::run()
-{
- m_returnValue = m_entryPoint(m_data);
-}
-
-class ThreadMonitor : public QObject {
- Q_OBJECT
-public:
- static ThreadMonitor * instance()
- {
- static ThreadMonitor *instance = new ThreadMonitor();
- return instance;
- }
-
-public Q_SLOTS:
- void threadFinished()
- {
- sender()->deleteLater();
- }
-};
-
-static Mutex* atomicallyInitializedStaticMutex;
-
-static Mutex& threadMapMutex()
-{
- static Mutex mutex;
- return mutex;
-}
-
-static HashMap<ThreadIdentifier, QThread*>& threadMap()
-{
- static HashMap<ThreadIdentifier, QThread*> map;
- return map;
-}
-
-static ThreadIdentifier identifierByQthreadHandle(QThread*& thread)
-{
- MutexLocker locker(threadMapMutex());
-
- HashMap<ThreadIdentifier, QThread*>::iterator i = threadMap().begin();
- for (; i != threadMap().end(); ++i) {
- if (i->second == thread)
- return i->first;
- }
-
- return 0;
-}
-
-static ThreadIdentifier establishIdentifierForThread(QThread*& thread)
-{
- ASSERT(!identifierByQthreadHandle(thread));
-
- MutexLocker locker(threadMapMutex());
-
- static ThreadIdentifier identifierCount = 1;
-
- threadMap().add(identifierCount, thread);
-
- return identifierCount++;
-}
-
-static void clearThreadForIdentifier(ThreadIdentifier id)
-{
- MutexLocker locker(threadMapMutex());
-
- ASSERT(threadMap().contains(id));
-
- threadMap().remove(id);
-}
-
-static QThread* threadForIdentifier(ThreadIdentifier id)
-{
- MutexLocker locker(threadMapMutex());
-
- return threadMap().get(id);
-}
-
-void initializeThreading()
-{
- if (!atomicallyInitializedStaticMutex) {
- atomicallyInitializedStaticMutex = new Mutex;
- threadMapMutex();
- initializeRandomNumberGenerator();
- }
-}
-
-void lockAtomicallyInitializedStaticMutex()
-{
- ASSERT(atomicallyInitializedStaticMutex);
- atomicallyInitializedStaticMutex->lock();
-}
-
-void unlockAtomicallyInitializedStaticMutex()
-{
- atomicallyInitializedStaticMutex->unlock();
-}
-
-ThreadIdentifier createThreadInternal(ThreadFunction entryPoint, void* data, const char*)
-{
- ThreadPrivate* thread = new ThreadPrivate(entryPoint, data);
- if (!thread) {
- LOG_ERROR("Failed to create thread at entry point %p with data %p", entryPoint, data);
- return 0;
- }
-
- QObject::connect(thread, SIGNAL(finished()), ThreadMonitor::instance(), SLOT(threadFinished()));
-
- thread->start();
-
- QThread* threadRef = static_cast<QThread*>(thread);
-
- return establishIdentifierForThread(threadRef);
-}
-
-void initializeCurrentThreadInternal(const char*)
-{
-}
-
-int waitForThreadCompletion(ThreadIdentifier threadID, void** result)
-{
- ASSERT(threadID);
-
- QThread* thread = threadForIdentifier(threadID);
-
- bool res = thread->wait();
-
- clearThreadForIdentifier(threadID);
- if (result)
- *result = static_cast<ThreadPrivate*>(thread)->getReturnValue();
-
- return !res;
-}
-
-void detachThread(ThreadIdentifier threadID)
-{
- ASSERT(threadID);
- clearThreadForIdentifier(threadID);
-}
-
-ThreadIdentifier currentThread()
-{
- QThread* currentThread = QThread::currentThread();
- if (ThreadIdentifier id = identifierByQthreadHandle(currentThread))
- return id;
- return establishIdentifierForThread(currentThread);
-}
-
-void yield()
-{
- QThread::yieldCurrentThread();
-}
-
-Mutex::Mutex()
- : m_mutex(new QMutex())
-{
-}
-
-Mutex::~Mutex()
-{
- delete m_mutex;
-}
-
-void Mutex::lock()
-{
- m_mutex->lock();
-}
-
-bool Mutex::tryLock()
-{
- return m_mutex->tryLock();
-}
-
-void Mutex::unlock()
-{
- m_mutex->unlock();
-}
-
-ThreadCondition::ThreadCondition()
- : m_condition(new QWaitCondition())
-{
-}
-
-ThreadCondition::~ThreadCondition()
-{
- delete m_condition;
-}
-
-void ThreadCondition::wait(Mutex& mutex)
-{
- m_condition->wait(mutex.impl());
-}
-
-bool ThreadCondition::timedWait(Mutex& mutex, double absoluteTime)
-{
- double currentTime = WTF::currentTime();
-
- // Time is in the past - return immediately.
- if (absoluteTime < currentTime)
- return false;
-
- // Time is too far in the future (and would overflow unsigned long) - wait forever.
- if (absoluteTime - currentTime > static_cast<double>(INT_MAX) / 1000.0) {
- wait(mutex);
- return true;
- }
-
- double intervalMilliseconds = (absoluteTime - currentTime) * 1000.0;
- return m_condition->wait(mutex.impl(), static_cast<unsigned long>(intervalMilliseconds));
-}
-
-void ThreadCondition::signal()
-{
- m_condition->wakeOne();
-}
-
-void ThreadCondition::broadcast()
-{
- m_condition->wakeAll();
-}
-
-} // namespace WebCore
-
-#include "ThreadingQt.moc"
-
-#endif
projects / apple / javascriptcore.git / blobdiff