restartingapplication.cpp

   1 /*
   2  *   Copyright (C) 2006 Aaron Seigo <aseigo@kde.org>
   3  *
   4  *   This program is free software; you can redistribute it and/or modify
   5  *   it under the terms of the GNU Library General Public License version 2 as
   6  *   published by the Free Software Foundation
   7  *
   8  *   This program is distributed in the hope that it will be useful,
   9  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  *   GNU General Public License for more details
  12  *
  13  *   You should have received a copy of the GNU Library General Public
  14  *   License along with this program; if not, write to the
  15  *   Free Software Foundation, Inc.,
  16  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <unistd.h>
  22
  23 #include <QTimer>
  24
  25 #include <KCrash>
  26
  27 #include <restartingapplication.h>
  28
  29 RestartingApplication::RestartingApplication(Display *display,
  30                                              Qt::HANDLE visual,
  31                                              Qt::HANDLE colormap)
  32     : KUniqueApplication(display, visual, colormap)
  33 {
  34     if (KCrash::crashHandler() == 0 ) {
  35         // this means we've most likely crashed once. so let's see if we
  36         // stay up for more than 2 minutes time, and if so reset the
  37         // crash handler since the crash isn't a frequent offender
  38         QTimer::singleShot(120000, this, SLOT(setCrashHandler()));
  39     }
  40     else {
  41         // See if a crash handler was installed. It was if the -nocrashhandler
  42         // argument was given, but the app eats the kde options so we can't
  43         // check that directly. If it wasn't, don't install our handler either.
  44         setCrashHandler();
  45     }
  46 }
  47
  48 void RestartingApplication::setCrashHandler()
  49 {
  50     KCrash::setEmergencySaveFunction(RestartingApplication::crashHandler);
  51 }
  52
  53 void RestartingApplication::crashHandler(int)
  54 {
  55     fprintf(stderr, "krunner: crashHandler called\n");
  56
  57     sleep(1);
  58     system("krunner --nocrashhandler &"); // try to restart
  59 }
  60
  61 #include "restartingapplication.moc"