2 * Copyright (C) 2011 University of Szeged
3 * Copyright (C) 2011 Gabor Loki <loki@webkit.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY UNIVERSITY OF SZEGED ``AS IS'' AND ANY
16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL UNIVERSITY OF SZEGED OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
23 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #ifndef ParallelJobs_h
29 #define ParallelJobs_h
31 #include <wtf/Assertions.h>
32 #include <wtf/Noncopyable.h>
33 #include <wtf/RefPtr.h>
34 #include <wtf/Vector.h>
38 // // Initialize parallel jobs
39 // ParallelJobs<TypeOfParameter> parallelJobs(&worker [, requestedNumberOfJobs]);
41 // // Fill the parameter array
42 // for(i = 0; i < parallelJobs.numberOfJobs(); ++i) {
43 // TypeOfParameter& params = parallelJobs.parameter(i);
44 // params.attr1 = localVars ...
48 // // Execute parallel jobs
49 // parallelJobs.execute();
52 #if ENABLE(THREADING_GENERIC)
53 #include <wtf/ParallelJobsGeneric.h>
55 #elif ENABLE(THREADING_OPENMP)
56 #include <wtf/ParallelJobsOpenMP.h>
58 #elif ENABLE(THREADING_LIBDISPATCH)
59 #include <wtf/ParallelJobsLibdispatch.h>
62 #error "No parallel processing API for ParallelJobs"
68 template<typename Type>
70 WTF_MAKE_FAST_ALLOCATED;
72 typedef void (*WorkerFunction)(Type*);
74 ParallelJobs(WorkerFunction func, int requestedJobNumber) :
75 m_parallelEnvironment(reinterpret_cast<ParallelEnvironment::ThreadFunction>(func), sizeof(Type), requestedJobNumber)
77 m_parameters.grow(m_parallelEnvironment.numberOfJobs());
78 ASSERT(numberOfJobs() == m_parameters.size());
83 return m_parameters.size();
86 Type& parameter(size_t i)
88 return m_parameters[i];
93 m_parallelEnvironment.execute(reinterpret_cast<unsigned char*>(m_parameters.data()));
97 ParallelEnvironment m_parallelEnvironment;
98 Vector<Type> m_parameters;
103 using WTF::ParallelJobs;
105 #endif // ParallelJobs_h