/**************************************************************************** ** ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the documentation of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** You may use this file under the terms of the BSD license as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * 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. ** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor ** the names of its contributors may be used to endorse or promote ** products derived from this software without specific prior written ** permission. ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "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 THE COPYRIGHT ** OWNER 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." ** $QT_END_LICENSE$ ** ****************************************************************************/ #include #include #include #include "threads.h" //! [0] void MyThread::run() //! [0] //! [1] { //! [1] //! [2] } //! [2] #define Counter ReentrantCounter //! [3] class Counter //! [3] //! [4] { public: Counter() { n = 0; } void increment() { ++n; } void decrement() { --n; } int value() const { return n; } private: int n; }; //! [4] #undef Counter #define Counter ThreadSafeCounter //! [5] class Counter //! [5] //! [6] { public: Counter() { n = 0; } void increment() { QMutexLocker locker(&mutex); ++n; } void decrement() { QMutexLocker locker(&mutex); --n; } int value() const { QMutexLocker locker(&mutex); return n; } private: mutable QMutex mutex; int n; }; //! [6] typedef int SomeClass; //! [7] QThreadStorage > caches; void cacheObject(const QString &key, SomeClass *object) //! [7] //! [8] { caches.localData().insert(key, object); } void removeFromCache(const QString &key) //! [8] //! [9] { if (!caches.hasLocalData()) return; caches.localData().remove(key); } //! [9] int main() { return 0; }