From 96501b0a18f4f70048403dccc4cb42dd71db8f9d Mon Sep 17 00:00:00 2001 From: Lars Knoll Date: Fri, 3 Feb 2012 14:17:26 +0100 Subject: Move QtConcurrent into its own module Task-number: QTBUG-20892 Change-Id: I614500aafb6428915509983608bbb0ade4e4f016 Reviewed-by: Thiago Macieira --- src/corelib/concurrent/qtconcurrentmapkernel.h | 272 ------------------------- 1 file changed, 272 deletions(-) delete mode 100644 src/corelib/concurrent/qtconcurrentmapkernel.h (limited to 'src/corelib/concurrent/qtconcurrentmapkernel.h') diff --git a/src/corelib/concurrent/qtconcurrentmapkernel.h b/src/corelib/concurrent/qtconcurrentmapkernel.h deleted file mode 100644 index 47cf143fffa..00000000000 --- a/src/corelib/concurrent/qtconcurrentmapkernel.h +++ /dev/null @@ -1,272 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the QtCore module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** This file may be used under the terms of the GNU Lesser General Public -** License version 2.1 as published by the Free Software Foundation and -** appearing in the file LICENSE.LGPL included in the packaging of this -** file. Please review the following information to ensure the GNU Lesser -** General Public License version 2.1 requirements will be met: -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 as published by the Free Software Foundation -** and appearing in the file LICENSE.GPL included in the packaging of this -** file. Please review the following information to ensure the GNU General -** Public License version 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifndef QTCONCURRENT_MAPKERNEL_H -#define QTCONCURRENT_MAPKERNEL_H - -#include - -#ifndef QT_NO_CONCURRENT - -#include -#include - -QT_BEGIN_HEADER -QT_BEGIN_NAMESPACE - - -#ifndef qdoc -namespace QtConcurrent { - -// map kernel, works with both parallel-for and parallel-while -template -class MapKernel : public IterateKernel -{ - MapFunctor map; -public: - typedef void ReturnType; - MapKernel(Iterator begin, Iterator end, MapFunctor _map) - : IterateKernel(begin, end), map(_map) - { } - - bool runIteration(Iterator it, int, void *) - { - map(*it); - return false; - } - - bool runIterations(Iterator sequenceBeginIterator, int beginIndex, int endIndex, void *) - { - Iterator it = sequenceBeginIterator; - advance(it, beginIndex); - for (int i = beginIndex; i < endIndex; ++i) { - runIteration(it, i, 0); - advance(it, 1); - } - - return false; - } -}; - -template > -class MappedReducedKernel : public IterateKernel -{ - ReducedResultType reducedResult; - MapFunctor map; - ReduceFunctor reduce; - Reducer reducer; -public: - typedef ReducedResultType ReturnType; - MappedReducedKernel(Iterator begin, Iterator end, MapFunctor _map, ReduceFunctor _reduce, ReduceOptions reduceOptions) - : IterateKernel(begin, end), reducedResult(), map(_map), reduce(_reduce), reducer(reduceOptions) - { } - - MappedReducedKernel(ReducedResultType initialValue, - MapFunctor _map, - ReduceFunctor _reduce) - : reducedResult(initialValue), map(_map), reduce(_reduce) - { } - - bool runIteration(Iterator it, int index, ReducedResultType *) - { - IntermediateResults results; - results.begin = index; - results.end = index + 1; - - results.vector.append(map(*it)); - reducer.runReduce(reduce, reducedResult, results); - return false; - } - - bool runIterations(Iterator sequenceBeginIterator, int begin, int end, ReducedResultType *) - { - IntermediateResults results; - results.begin = begin; - results.end = end; - results.vector.reserve(end - begin); - - Iterator it = sequenceBeginIterator; - advance(it, begin); - for (int i = begin; i < end; ++i) { - results.vector.append(map(*(it))); - advance(it, 1); - } - - reducer.runReduce(reduce, reducedResult, results); - return false; - } - - void finish() - { - reducer.finish(reduce, reducedResult); - } - - bool shouldThrottleThread() - { - return IterateKernel::shouldThrottleThread() || reducer.shouldThrottle(); - } - - bool shouldStartThread() - { - return IterateKernel::shouldStartThread() && reducer.shouldStartThread(); - } - - typedef ReducedResultType ResultType; - ReducedResultType *result() - { - return &reducedResult; - } -}; - -template -class MappedEachKernel : public IterateKernel -{ - MapFunctor map; - typedef typename MapFunctor::result_type T; -public: - typedef T ReturnType; - typedef T ResultType; - - MappedEachKernel(Iterator begin, Iterator end, MapFunctor _map) - : IterateKernel(begin, end), map(_map) { } - - bool runIteration(Iterator it, int, T *result) - { - *result = map(*it); - return true; - } - - bool runIterations(Iterator sequenceBeginIterator, int begin, int end, T *results) - { - - Iterator it = sequenceBeginIterator; - advance(it, begin); - for (int i = begin; i < end; ++i) { - runIteration(it, i, results + (i - begin)); - advance(it, 1); - } - - return true; - } -}; - -template -inline ThreadEngineStarter startMap(Iterator begin, Iterator end, Functor functor) -{ - return startThreadEngine(new MapKernel(begin, end, functor)); -} - -template -inline ThreadEngineStarter startMapped(Iterator begin, Iterator end, Functor functor) -{ - return startThreadEngine(new MappedEachKernel(begin, end, functor)); -} - -/* - The SequnceHolder class is used to hold a reference to the - sequence we are working on. -*/ -template -struct SequenceHolder1 : public Base -{ - SequenceHolder1(const Sequence &_sequence, Functor functor) - : Base(_sequence.begin(), _sequence.end(), functor), sequence(_sequence) - { } - - Sequence sequence; - - void finish() - { - Base::finish(); - // Clear the sequence to make sure all temporaries are destroyed - // before finished is signaled. - sequence = Sequence(); - } -}; - -template -inline ThreadEngineStarter startMapped(const Sequence &sequence, Functor functor) -{ - typedef SequenceHolder1, Functor> - SequenceHolderType; - - return startThreadEngine(new SequenceHolderType(sequence, functor)); -} - -template -inline ThreadEngineStarter startMappedReduced(const Sequence & sequence, - MapFunctor mapFunctor, ReduceFunctor reduceFunctor, - ReduceOptions options) -{ - typedef typename Sequence::const_iterator Iterator; - typedef ReduceKernel Reducer; - typedef MappedReducedKernel MappedReduceType; - typedef SequenceHolder2 SequenceHolderType; - return startThreadEngine(new SequenceHolderType(sequence, mapFunctor, reduceFunctor, options)); -} - -template -inline ThreadEngineStarter startMappedReduced(Iterator begin, Iterator end, - MapFunctor mapFunctor, ReduceFunctor reduceFunctor, - ReduceOptions options) -{ - typedef ReduceKernel Reducer; - typedef MappedReducedKernel MappedReduceType; - return startThreadEngine(new MappedReduceType(begin, end, mapFunctor, reduceFunctor, options)); -} - -} // namespace QtConcurrent - -#endif //qdoc - -QT_END_NAMESPACE -QT_END_HEADER - -#endif // QT_NO_CONCURRENT - -#endif -- cgit v1.2.3