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/*
* Copyright (C) 2011 University of Szeged
* Copyright (C) 2011 Gabor Loki <loki@webkit.org>
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY UNIVERSITY OF SZEGED ``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 UNIVERSITY OF SZEGED OR
* 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 ParallelJobsGeneric_h
#define ParallelJobsGeneric_h
#if ENABLE(THREADING_GENERIC)
#include <wtf/Condition.h>
#include <wtf/Lock.h>
#include <wtf/RefCounted.h>
#include <wtf/Threading.h>
namespace WTF {
class ParallelEnvironment {
WTF_MAKE_FAST_ALLOCATED;
public:
typedef void (*ThreadFunction)(void*);
WTF_EXPORT_PRIVATE ParallelEnvironment(ThreadFunction, size_t sizeOfParameter, int requestedJobNumber);
int numberOfJobs()
{
return m_numberOfJobs;
}
WTF_EXPORT_PRIVATE void execute(void* parameters);
class ThreadPrivate : public RefCounted<ThreadPrivate> {
public:
bool tryLockFor(ParallelEnvironment*);
void execute(ThreadFunction, void*);
void waitForFinish();
static Ref<ThreadPrivate> create()
{
return adoptRef(*new ThreadPrivate());
}
private:
mutable Lock m_lock;
Condition m_threadCondition;
RefPtr<Thread> m_thread;
bool m_running { false };
ParallelEnvironment* m_parent WTF_GUARDED_BY_LOCK(m_lock) { nullptr };
ThreadFunction m_threadFunction { nullptr };
void* m_parameters { nullptr };
};
private:
ThreadFunction m_threadFunction;
size_t m_sizeOfParameter;
int m_numberOfJobs;
Vector< RefPtr<ThreadPrivate> > m_threads;
static Vector< RefPtr<ThreadPrivate> >* s_threadPool;
};
} // namespace WTF
#endif // ENABLE(THREADING_GENERIC)
#endif // ParallelJobsGeneric_h
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