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| 1 /* | |
| 2 * Copyright (C) 2011 University of Szeged | |
| 3 * Copyright (C) 2011 Gabor Loki <loki@webkit.org> | |
| 4 * All rights reserved. | |
| 5 * | |
| 6 * Redistribution and use in source and binary forms, with or without | |
| 7 * modification, are permitted provided that the following conditions | |
| 8 * are met: | |
| 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. | |
| 14 * | |
| 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. | |
| 26 */ | |
| 27 | |
| 28 #ifndef ParallelJobs_h | |
| 29 #define ParallelJobs_h | |
| 30 | |
| 31 #include <wtf/Assertions.h> | |
| 32 #include <wtf/Noncopyable.h> | |
| 33 #include <wtf/RefPtr.h> | |
| 34 #include <wtf/Vector.h> | |
| 35 | |
| 36 // Usage: | |
| 37 // | |
| 38 // // Initialize parallel jobs | |
| 39 // ParallelJobs<TypeOfParameter> parallelJobs(&worker [, requestedNumberOfJo
bs]); | |
| 40 // | |
| 41 // // Fill the parameter array | |
| 42 // for(i = 0; i < parallelJobs.numberOfJobs(); ++i) { | |
| 43 // TypeOfParameter& params = parallelJobs.parameter(i); | |
| 44 // params.attr1 = localVars ... | |
| 45 // ... | |
| 46 // } | |
| 47 // | |
| 48 // // Execute parallel jobs | |
| 49 // parallelJobs.execute(); | |
| 50 // | |
| 51 | |
| 52 #if ENABLE(THREADING_GENERIC) | |
| 53 #include <wtf/ParallelJobsGeneric.h> | |
| 54 | |
| 55 #elif ENABLE(THREADING_OPENMP) | |
| 56 #include <wtf/ParallelJobsOpenMP.h> | |
| 57 | |
| 58 #elif ENABLE(THREADING_LIBDISPATCH) | |
| 59 #include <wtf/ParallelJobsLibdispatch.h> | |
| 60 | |
| 61 #else | |
| 62 #error "No parallel processing API for ParallelJobs" | |
| 63 | |
| 64 #endif | |
| 65 | |
| 66 namespace WTF { | |
| 67 | |
| 68 template<typename Type> | |
| 69 class ParallelJobs { | |
| 70 WTF_MAKE_FAST_ALLOCATED; | |
| 71 public: | |
| 72 typedef void (*WorkerFunction)(Type*); | |
| 73 | |
| 74 ParallelJobs(WorkerFunction func, int requestedJobNumber) : | |
| 75 m_parallelEnvironment(reinterpret_cast<ParallelEnvironment::ThreadFuncti
on>(func), sizeof(Type), requestedJobNumber) | |
| 76 { | |
| 77 m_parameters.grow(m_parallelEnvironment.numberOfJobs()); | |
| 78 ASSERT(numberOfJobs() == m_parameters.size()); | |
| 79 } | |
| 80 | |
| 81 size_t numberOfJobs() | |
| 82 { | |
| 83 return m_parameters.size(); | |
| 84 } | |
| 85 | |
| 86 Type& parameter(size_t i) | |
| 87 { | |
| 88 return m_parameters[i]; | |
| 89 } | |
| 90 | |
| 91 void execute() | |
| 92 { | |
| 93 m_parallelEnvironment.execute(reinterpret_cast<unsigned char*>(m_paramet
ers.data())); | |
| 94 } | |
| 95 | |
| 96 private: | |
| 97 ParallelEnvironment m_parallelEnvironment; | |
| 98 Vector<Type> m_parameters; | |
| 99 }; | |
| 100 | |
| 101 } // namespace WTF | |
| 102 | |
| 103 using WTF::ParallelJobs; | |
| 104 | |
| 105 #endif // ParallelJobs_h | |
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Chromium Code Reviews
Issue 14238015:
Move Source/WTF/wtf to Source/wtf (Closed)
Base URL: svn://svn.chromium.org/blink/trunk