diff options
| author | Qt by Nokia <qt-info@nokia.com> | 2011-04-27 12:05:43 +0200 |
|---|---|---|
| committer | axis <qt-info@nokia.com> | 2011-04-27 12:05:43 +0200 |
| commit | 38be0d13830efd2d98281c645c3a60afe05ffece (patch) | |
| tree | 6ea73f3ec77f7d153333779883e8120f82820abe /src/gui/embedded/qwssignalhandler.cpp | |
Initial import from the monolithic Qt.
This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:
http://qt.gitorious.org/qt/pages/GitIntroductionWithQt
If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.
Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12
Diffstat (limited to 'src/gui/embedded/qwssignalhandler.cpp')
| -rw-r--r-- | src/gui/embedded/qwssignalhandler.cpp | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/src/gui/embedded/qwssignalhandler.cpp b/src/gui/embedded/qwssignalhandler.cpp new file mode 100644 index 00000000000..cc18bebdfb8 --- /dev/null +++ b/src/gui/embedded/qwssignalhandler.cpp @@ -0,0 +1,128 @@ +/**************************************************************************** +** +** 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 QtGui 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 Technology Preview License Agreement accompanying +** this package. +** +** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qwssignalhandler_p.h" + +#ifndef QT_NO_QWS_SIGNALHANDLER + +#include <sys/types.h> +#ifndef QT_NO_QWS_MULTIPROCESS +# include <sys/ipc.h> +# include <sys/sem.h> + +# include <private/qcore_unix_p.h> +#endif +#include <signal.h> + +QT_BEGIN_NAMESPACE + +class QWSSignalHandlerPrivate : public QWSSignalHandler +{ +public: + QWSSignalHandlerPrivate() : QWSSignalHandler() {} +}; + + +Q_GLOBAL_STATIC(QWSSignalHandlerPrivate, signalHandlerInstance); + + +QWSSignalHandler* QWSSignalHandler::instance() +{ + return signalHandlerInstance(); +} + +QWSSignalHandler::QWSSignalHandler() +{ + const int signums[] = { SIGHUP, SIGINT, SIGQUIT, SIGILL, SIGABRT, SIGFPE, + SIGSEGV, SIGTERM, SIGBUS }; + const int n = sizeof(signums)/sizeof(int); + + for (int i = 0; i < n; ++i) { + const int signum = signums[i]; + qt_sighandler_t old = signal(signum, handleSignal); + if (old == SIG_IGN) // don't remove shm and semaphores when ignored + signal(signum, old); + else + oldHandlers[signum] = (old == SIG_ERR ? SIG_DFL : old); + } +} + +QWSSignalHandler::~QWSSignalHandler() +{ +#ifndef QT_NO_QWS_MULTIPROCESS + while (!semaphores.isEmpty()) + removeSemaphore(semaphores.last()); +#endif +} + +#ifndef QT_NO_QWS_MULTIPROCESS +void QWSSignalHandler::removeSemaphore(int semno) +{ + const int index = semaphores.lastIndexOf(semno); + if (index != -1) { + qt_semun semval; + semval.val = 0; + semctl(semaphores.at(index), 0, IPC_RMID, semval); + semaphores.remove(index); + } +} +#endif // QT_NO_QWS_MULTIPROCESS + +void QWSSignalHandler::handleSignal(int signum) +{ + QWSSignalHandler *h = instance(); + + signal(signum, h->oldHandlers[signum]); + +#ifndef QT_NO_QWS_MULTIPROCESS + qt_semun semval; + semval.val = 0; + for (int i = 0; i < h->semaphores.size(); ++i) + semctl(h->semaphores.at(i), 0, IPC_RMID, semval); +#endif + + h->objects.clear(); + raise(signum); +} + +QT_END_NAMESPACE + +#endif // QT_QWS_NO_SIGNALHANDLER |