# Source: kcrash.h |
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    /*
     * This file is part of the KDE Libraries
     * Copyright (C) 2000 Timo Hummel <timo.hummel@sap.com>
     *                    Tom Braun <braunt@fh-konstanz.de>
     * 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.
     *
     */

    #ifndef __KCRASH_H
    #define __KCRASH_H

    #include <qstring.h>

    /**
     * This class handles segmentation-faults.
     * By default it displays a  message-box saying the application crashed.
     * This default can be overridden by setting a custom crash handler with
     * @ref setCrashHandler().
     * If a function is specified with @ref setEmergencySaveFunction() it will
     * be called by the default crash handler, giving the application a chance
     * to save its data.
     */
    class KCrash
    {
     private: // ;o)
      static const char *appName;
      static const char *appPath;

     public:
      static void defaultCrashHandler (int signal);
      typedef void (*HandlerType)(int);

      /**
       * Install a function to be called in case a SIGSEGV is caught.
       * @param HandlerType handler can be one of
       * @li null in wich case signal-catching is disabled
       *  (by calling signal(SIGSEGV, SIG_DFL))
       * @li if handler is omitted the default crash handler is installed.
       * @li an user defined function in the form:
       * static (if in a class) void myCrashHandler(int);
       */

      static void setCrashHandler (HandlerType handler = defaultCrashHandler);

      /**
       * Returns the intalled crash handler
       */
      static HandlerType crashHandler() { return _crashHandler; }

      /**
       * Installs a function which should try to save the applications data.
       * It is the crash handler´s responsibility to call this function.
       * Therefore, if no crash handler is set, the default crash handler
       * is installed to ensure the save function is called.
       */
      static void setEmergencySaveFunction (HandlerType saveFunction = (HandlerType)0);
      /**
       * Return the currently set emergency save function.
       */
      static HandlerType emergencySaveFunction() { return _emergencySaveFunction; }

      /**
       * Sets the application path @p path which should be passed to
       * Dr. Konqi, our nice crash display application.
       */
      static void setApplicationPath (QString path) { appPath = qstrdup(path.local8Bit().data()); }

      /**
       * Sets the application name @p name which should be passed to
       * Dr. Konqi, our nice crash display application.
       */
      static void setApplicationName (QString name) { appName = qstrdup(name.local8Bit().data()); }

     protected:
      static HandlerType _crashHandler;
      static HandlerType _emergencySaveFunction;
    };

    #endif

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