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/****************************************************************************
**
** 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://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#include <windows.h>
#include "qmutex.h"
#include <qatomic.h>
#include "qmutex_p.h"
QT_BEGIN_NAMESPACE
QMutexPrivate::QMutexPrivate(QMutex::RecursionMode mode)
: recursive(mode == QMutex::Recursive), contenders(0), lastSpinCount(0), owner(0), count(0)
{
if (QSysInfo::WindowsVersion == 0) {
// mutex was created before initializing WindowsVersion. this
// can happen when creating the resource file engine handler,
// for example. try again with just the A version
#ifdef Q_OS_WINCE
event = CreateEventW(0, FALSE, FALSE, 0);
#else
event = CreateEventA(0, FALSE, FALSE, 0);
#endif
} else {
event = QT_WA_INLINE(CreateEventW(0, FALSE, FALSE, 0),
CreateEventA(0, FALSE, FALSE, 0));
}
if (!event)
qWarning("QMutexPrivate::QMutexPrivate: Cannot create event");
}
QMutexPrivate::~QMutexPrivate()
{ CloseHandle(event); }
bool QMutexPrivate::wait(int timeout)
{
return WaitForSingleObject(event, timeout < 0 ? INFINITE : timeout) == WAIT_OBJECT_0;
}
void QMutexPrivate::wakeUp()
{ SetEvent(event); }
QT_END_NAMESPACE
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