JavaScriptCore-1097.3.tar.gz

[apple/javascriptcore.git] / wtf / ParallelJobs.h

diff --git a/wtf/ParallelJobs.h b/wtf/ParallelJobs.h
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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 ParallelJobs_h
-#define ParallelJobs_h
-
-#include "Assertions.h"
-#include "Noncopyable.h"
-#include "RefPtr.h"
-#include <wtf/Vector.h>
-
-#if ENABLE(PARALLEL_JOBS)
-
-// Usage:
-//
-// #if ENABLE(PARALLEL_JOBS)
-//
-//     // Initialize parallel jobs
-//     ParallelJobs<TypeOfParameter> parallelJobs(&worker [, requestedNumberOfJobs]);
-//
-//     // Fill the parameter array
-//     for(i = 0; i < parallelJobs.numberOfJobs(); ++i) {
-//       TypeOfParameter& params = parallelJobs.parameter(i);
-//       params.attr1 = localVars ...
-//       ...
-//     }
-//
-//     // Execute parallel jobs
-//     parallelJobs.execute();
-//
-// #else
-//
-//     inlineFunction(args...);
-//
-// #endif // ENABLE(PARALLEL_JOBS)
-
-#if ENABLE(THREADING_GENERIC)
-#include "ParallelJobsGeneric.h"
-
-#elif ENABLE(THREADING_OPENMP)
-#include "ParallelJobsOpenMP.h"
-
-#elif ENABLE(THREADING_LIBDISPATCH)
-#include "ParallelJobsLibdispatch.h"
-
-#else
-#error "No parallel processing API for ParallelJobs"
-
-#endif
-
-namespace WTF {
-
-template<typename Type>
-class ParallelJobs {
-    WTF_MAKE_FAST_ALLOCATED;
-public:
-    typedef void (*WorkerFunction)(Type*);
-
-    ParallelJobs(WorkerFunction func, int requestedJobNumber = 0) :
-        m_parallelEnvironment(reinterpret_cast<ParallelEnvironment::ThreadFunction>(func), sizeof(Type), requestedJobNumber)
-    {
-        m_parameters.grow(m_parallelEnvironment.numberOfJobs());
-        ASSERT(numberOfJobs() == m_parameters.size());
-    }
-
-    size_t numberOfJobs()
-    {
-        return m_parameters.size();
-    }
-
-    Type& parameter(size_t i)
-    {
-        return m_parameters[i];
-    }
-
-    void execute()
-    {
-        m_parallelEnvironment.execute(reinterpret_cast<unsigned char*>(m_parameters.data()));
-    }
-
-private:
-    ParallelEnvironment m_parallelEnvironment;
-    Vector<Type> m_parameters;
-};
-
-} // namespace WTF
-
-using WTF::ParallelJobs;
-
-#endif // ENABLE(PARALLEL_JOBS)
-
-#endif // ParallelJobs_h