| -rw-r--r-- | libopie/oprocctrl.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/libopie/oprocctrl.h b/libopie/oprocctrl.h new file mode 100644 index 0000000..5b39490 --- a/dev/null +++ b/libopie/oprocctrl.h @@ -0,0 +1,121 @@ +/* This file is part of the KDE libraries + Copyright (C) 1997 Christian Czezakte (e9025461@student.tuwien.ac.at) + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. +*/ +// +// KPROCESSCONTROLLER -- A helper class for KProcess +// +// version 0.3.1, Jan 8th 1997 +// +// (C) Christian Czezatke +// e9025461@student.tuwien.ac.at +// Ported by Holger Freyther +// + +#ifndef __KPROCCTRL_H__ +#define __KPROCCTRL_H__ + +#include <qvaluelist.h> +#include <qtimer.h> + +#include "oprocess.h" + +class OProcessControllerPrivate; +class QSocketNotifier; + +/** + * @short Used internally by @ref OProcess + * @internal + * @author Christian Czezakte <e9025461@student.tuwien.ac.at> + * + * A class for internal use by OProcess only. -- Exactly one instance + * of this class is generated by the first instance of OProcess that is + * created (a pointer to it gets stored in @ref theOProcessController ). + * + * This class takes care of the actual (UN*X) signal handling. +*/ +class OProcessController : public QObject +{ + Q_OBJECT + +public: + OProcessController(); + ~OProcessController(); + //CC: WARNING! Destructor Not virtual (but you don't derive classes from this anyhow...) + +public: + + /** + * Only a single instance of this class is allowed at a time, + * and this static variable is used to track the one instance. + */ + static OProcessController *theOProcessController; + + /** + * Automatically called upon SIGCHLD. + * + * Normally you do not need to do anything with this function but + * if your application needs to disable SIGCHLD for some time for + * reasons beyond your control, you should call this function afterwards + * to make sure that no SIGCHLDs where missed. + */ + static void theSigCHLDHandler(int signal); + // handler for sigchld + + /** + * @internal + */ + static void setupHandlers(); + /** + * @internal + */ + static void resetHandlers(); + /** + * @internal + */ + void addOProcess( OProcess* ); + /** + * @internal + */ + void removeOProcess( OProcess* ); + public slots: + /** + * @internal + */ + void slotDoHousekeeping(int socket); + + private slots: + void delayedChildrenCleanup(); +private: + int fd[2]; + QSocketNotifier *notifier; + static struct sigaction oldChildHandlerData; + static bool handlerSet; + QValueList<OProcess*> processList; + QTimer delayedChildrenCleanupTimer; + + // Disallow assignment and copy-construction + OProcessController( const OProcessController& ); + OProcessController& operator= ( const OProcessController& ); + + OProcessControllerPrivate *d; +}; + + + +#endif + |