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-/*
- * Copyright (C) 2007, 2008, 2010 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.
- *
- */
-
-#ifndef ThreadingPrimitives_h
-#define ThreadingPrimitives_h
-
-#include "Platform.h"
-
-#include <wtf/Assertions.h>
-#include <wtf/Locker.h>
-#include <wtf/Noncopyable.h>
-
-#if OS(WINDOWS)
-#include <windows.h>
-#endif
-
-#if USE(PTHREADS)
-#include <pthread.h>
-#elif PLATFORM(GTK)
-#include "GOwnPtr.h"
-#endif
-
-#if PLATFORM(QT)
-#include <qglobal.h>
-QT_BEGIN_NAMESPACE
-class QMutex;
-class QWaitCondition;
-QT_END_NAMESPACE
-#endif
-
-namespace WTF {
-
-#if USE(PTHREADS)
-typedef pthread_mutex_t PlatformMutex;
-#if HAVE(PTHREAD_RWLOCK)
-typedef pthread_rwlock_t PlatformReadWriteLock;
-#else
-typedef void* PlatformReadWriteLock;
-#endif
-typedef pthread_cond_t PlatformCondition;
-#elif PLATFORM(GTK)
-typedef GOwnPtr<GMutex> PlatformMutex;
-typedef void* PlatformReadWriteLock; // FIXME: Implement.
-typedef GOwnPtr<GCond> PlatformCondition;
-#elif PLATFORM(QT)
-typedef QT_PREPEND_NAMESPACE(QMutex)* PlatformMutex;
-typedef void* PlatformReadWriteLock; // FIXME: Implement.
-typedef QT_PREPEND_NAMESPACE(QWaitCondition)* PlatformCondition;
-#elif OS(WINDOWS)
-struct PlatformMutex {
- CRITICAL_SECTION m_internalMutex;
- size_t m_recursionCount;
-};
-typedef void* PlatformReadWriteLock; // FIXME: Implement.
-struct PlatformCondition {
- size_t m_waitersGone;
- size_t m_waitersBlocked;
- size_t m_waitersToUnblock;
- HANDLE m_blockLock;
- HANDLE m_blockQueue;
- HANDLE m_unblockLock;
-
- bool timedWait(PlatformMutex&, DWORD durationMilliseconds);
- void signal(bool unblockAll);
-};
-#else
-typedef void* PlatformMutex;
-typedef void* PlatformReadWriteLock;
-typedef void* PlatformCondition;
-#endif
-
-class Mutex : public Noncopyable {
-public:
- Mutex();
- ~Mutex();
-
- void lock();
- bool tryLock();
- void unlock();
-
-public:
- PlatformMutex& impl() { return m_mutex; }
-private:
- PlatformMutex m_mutex;
-};
-
-typedef Locker<Mutex> MutexLocker;
-
-class ReadWriteLock : public Noncopyable {
-public:
- ReadWriteLock();
- ~ReadWriteLock();
-
- void readLock();
- bool tryReadLock();
-
- void writeLock();
- bool tryWriteLock();
-
- void unlock();
-
-private:
- PlatformReadWriteLock m_readWriteLock;
-};
-
-class ThreadCondition : public Noncopyable {
-public:
- ThreadCondition();
- ~ThreadCondition();
-
- void wait(Mutex& mutex);
- // Returns true if the condition was signaled before absoluteTime, false if the absoluteTime was reached or is in the past.
- // The absoluteTime is in seconds, starting on January 1, 1970. The time is assumed to use the same time zone as WTF::currentTime().
- bool timedWait(Mutex&, double absoluteTime);
- void signal();
- void broadcast();
-
-private:
- PlatformCondition m_condition;
-};
-
-} // namespace WTF
-
-using WTF::Mutex;
-using WTF::MutexLocker;
-using WTF::ThreadCondition;
-
-#endif // ThreadingPrimitives_h