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/*
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* This file is part of the KDE Libraries
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* Copyright (C) 2000 Timo Hummel <timo.hummel@sap.com>
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* Tom Braun <braunt@fh-konstanz.de>
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef __KCRASH_H
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#define __KCRASH_H
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#include <tqstring.h>
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#include "tdelibs_export.h"
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/**
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* This class handles segmentation-faults.
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* By default it displays a message-box saying the application crashed.
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* This default can be overridden by setting a custom crash handler with
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* setCrashHandler().
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* If a function is specified with setEmergencySaveFunction() it will
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* be called by the default crash handler, giving the application a chance
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* to save its data.
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*/
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class TDECORE_EXPORT KCrash
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{
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private: // ;o)
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static const char *appName;
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static const char *appPath;
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static bool safer;
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public:
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/**
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* The default crash handler.
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* @param signal the signal number
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*/
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static void defaultCrashHandler (int signal);
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/**
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* This function type is a pointer to a crash handler function.
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* The function's argument is the number of the signal.
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*/
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typedef void (*HandlerType)(int);
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/**
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* Install a function to be called in case a SIGSEGV is caught.
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* @param handler HandlerType handler can be one of
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* @li null in which case signal-catching is disabled
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* (by calling signal(SIGSEGV, SIG_DFL))
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* @li if handler is omitted the default crash handler is installed.
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* @li an user defined function in the form:
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* static (if in a class) void myCrashHandler(int);
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* @param handler the crash handler
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*/
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static void setCrashHandler (HandlerType handler = defaultCrashHandler);
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/**
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* Returns the installed crash handler.
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* @return the crash handler
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*/
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static HandlerType crashHandler() { return _crashHandler; }
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/**
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* Installs a function which should try to save the applications data.
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* It is the crash handler<65>s responsibility to call this function.
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* Therefore, if no crash handler is set, the default crash handler
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* is installed to ensure the save function is called.
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* @param saveFunction the handler to install
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*/
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static void setEmergencySaveFunction (HandlerType saveFunction = (HandlerType)0);
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/**
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* Return the currently set emergency save function.
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* @return the emergency save function
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*/
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static HandlerType emergencySaveFunction() { return _emergencySaveFunction; }
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/**
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* Set whether to start drkonqi without arbitrary disk access
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*/
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static void setSafer( bool on ) { safer = on; }
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/**
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* Sets the application @p path which should be passed to
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* Dr. Konqi, our nice crash display application.
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* @param path the application path.
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*/
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static void setApplicationPath (TQString path) { appPath = tqstrdup(path.local8Bit().data()); }
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/* KDE 4: Make it const TQString & */
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/**
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* Sets the application name @p name which should be passed to
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* Dr. Konqi, our nice crash display application.
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* @param name the name of the application, as shown in Dr. Konqi
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*/
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static void setApplicationName (TQString name) { appName = tqstrdup(name.local8Bit().data()); }
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/* KDE 4: Make it const TQString & */
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protected:
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/**
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* Pointer to the crash handler.
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*/
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static HandlerType _crashHandler;
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/**
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* Pointer to the emergency save function.
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*/
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static HandlerType _emergencySaveFunction;
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private:
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static void startDrKonqi( const char* argv[], int argc );
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static void startDirectly( const char* argv[], int argc );
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};
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#endif
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