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/****************************************************************************
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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** This file is part of the QtGui module of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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****************************************************************************/
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#include "qwssignalhandler_p.h"
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#ifndef QT_NO_QWS_SIGNALHANDLER
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#include <sys/types.h>
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#ifndef QT_NO_QWS_MULTIPROCESS
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unsigned short *array;
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struct seminfo *__buf;
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class QWSSignalHandlerPrivate : public QWSSignalHandler
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QWSSignalHandlerPrivate() : QWSSignalHandler() {}
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Q_GLOBAL_STATIC(QWSSignalHandlerPrivate, signalHandlerInstance);
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QWSSignalHandler* QWSSignalHandler::instance()
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return signalHandlerInstance();
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QWSSignalHandler::QWSSignalHandler()
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const int signums[] = { SIGHUP, SIGINT, SIGQUIT, SIGILL, SIGABRT, SIGFPE,
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SIGSEGV, SIGTERM, SIGBUS };
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const int n = sizeof(signums)/sizeof(int);
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for (int i = 0; i < n; ++i) {
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const int signum = signums[i];
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qt_sighandler_t old = signal(signum, handleSignal);
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if (old == SIG_IGN) // don't remove shm and semaphores when ignored
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oldHandlers[signum] = (old == SIG_ERR ? SIG_DFL : old);
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QWSSignalHandler::~QWSSignalHandler()
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#ifndef QT_NO_QWS_MULTIPROCESS
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while (!semaphores.isEmpty())
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removeSemaphore(semaphores.last());
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#ifndef QT_NO_QWS_MULTIPROCESS
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void QWSSignalHandler::removeSemaphore(int semno)
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const int index = semaphores.lastIndexOf(semno);
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semctl(semaphores.at(index), 0, IPC_RMID, semval);
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semaphores.remove(index);
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#endif // QT_NO_QWS_MULTIPROCESS
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void QWSSignalHandler::handleSignal(int signum)
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QWSSignalHandler *h = instance();
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signal(signum, h->oldHandlers[signum]);
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#ifndef QT_NO_QWS_MULTIPROCESS
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for (int i = 0; i < h->semaphores.size(); ++i)
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semctl(h->semaphores.at(i), 0, IPC_RMID, semval);
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#endif // QT_QWS_NO_SIGNALHANDLER