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Diffstat (limited to 'qtools/qmutex_win32.cpp')
-rw-r--r-- | qtools/qmutex_win32.cpp | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/qtools/qmutex_win32.cpp b/qtools/qmutex_win32.cpp new file mode 100644 index 0000000..2d662ea --- /dev/null +++ b/qtools/qmutex_win32.cpp @@ -0,0 +1,108 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, 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 1.0, 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. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at http://www.qtsoftware.com/contact. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <windows.h> + +#include "qmutex.h" +#include "qmutex_p.h" + +QMutexPrivate::QMutexPrivate() + : contenders(0) +{ + event = CreateEvent(0, FALSE, FALSE, 0); + if (!event) + qWarning("QMutexPrivate::QMutexPrivate: Cannot create event"); +} + +QMutexPrivate::~QMutexPrivate() +{ + CloseHandle(event); +} + +void QMutexPrivate::wait() +{ + WaitForSingleObject(event, INFINITE); +} + +void QMutexPrivate::wakeUp() +{ + SetEvent(event); +} + +//---------------------------------------------------------------------- + +class QCriticalSection +{ + public: + QCriticalSection() { InitializeCriticalSection(§ion); } + ~QCriticalSection() { DeleteCriticalSection(§ion); } + void lock() { EnterCriticalSection(§ion); } + void unlock() { LeaveCriticalSection(§ion); } + + private: + CRITICAL_SECTION section; +}; + +static QCriticalSection qAtomicCriticalSection; + +bool QAtomicInt::testAndSet(int expectedValue,int newValue) +{ + bool returnValue = false; + qAtomicCriticalSection.lock(); + if (m_value == expectedValue) + { + m_value = newValue; + returnValue = true; + } + qAtomicCriticalSection.unlock(); + return returnValue; +} + +int QAtomicInt::fetchAndAdd(int valueToAdd) +{ + int returnValue; + qAtomicCriticalSection.lock(); + returnValue = m_value; + m_value += valueToAdd; + qAtomicCriticalSection.unlock(); + return returnValue; +} + |