view src/SDL_fatal.c @ 4179:d7294b7c732d SDL-1.2

Date: Fri, 24 Apr 2009 17:47:07 +0200 From: Stefan Klug Subject: Re: [SDL] SVN doesn't compile for wince the patch applied for Revision 4483 was seemingly not checked for side effects. It broke the WinCE build. The attached patch should fix these problems. I'm not using SDL 1.2 on CE anymore, and therefore haven't tested the patch... but at least it compiles ;-) Regards Stefan
author Sam Lantinga <slouken@libsdl.org>
date Thu, 07 May 2009 12:40:16 +0000
parents a1b03ba2fcd0
children
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2009 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

/* General fatal signal handling code for SDL */

#ifdef HAVE_SIGNAL_H

#include <signal.h>

#include "SDL.h"
#include "SDL_fatal.h"

/* This installs some signal handlers for the more common fatal signals,
   so that if the programmer is lazy, the app doesn't die so horribly if
   the program crashes.
*/

static void SDL_Parachute(int sig)
{
	signal(sig, SIG_DFL);
	SDL_Quit();
	raise(sig);
}

static int SDL_fatal_signals[] = {
	SIGSEGV,
#ifdef SIGBUS
	SIGBUS,
#endif
#ifdef SIGFPE
	SIGFPE,
#endif
#ifdef SIGQUIT
	SIGQUIT,
#endif
	0
};

void SDL_InstallParachute(void)
{
	/* Set a handler for any fatal signal not already handled */
	int i;
#ifdef HAVE_SIGACTION
	struct sigaction action;

	for ( i=0; SDL_fatal_signals[i]; ++i ) {
		sigaction(SDL_fatal_signals[i], NULL, &action);
		if ( action.sa_handler == SIG_DFL ) {
			action.sa_handler = SDL_Parachute;
			sigaction(SDL_fatal_signals[i], &action, NULL);
		}
	}
#ifdef SIGALRM
	/* Set SIGALRM to be ignored -- necessary on Solaris */
	sigaction(SIGALRM, NULL, &action);
	if ( action.sa_handler == SIG_DFL ) {
		action.sa_handler = SIG_IGN;
		sigaction(SIGALRM, &action, NULL);
	}
#endif
#else
	void (*ohandler)(int);

	for ( i=0; SDL_fatal_signals[i]; ++i ) {
		ohandler = signal(SDL_fatal_signals[i], SDL_Parachute);
		if ( ohandler != SIG_DFL ) {
			signal(SDL_fatal_signals[i], ohandler);
		}
	}
#endif /* HAVE_SIGACTION */
	return;
}

void SDL_UninstallParachute(void)
{
	/* Remove a handler for any fatal signal handled */
	int i;
#ifdef HAVE_SIGACTION
	struct sigaction action;

	for ( i=0; SDL_fatal_signals[i]; ++i ) {
		sigaction(SDL_fatal_signals[i], NULL, &action);
		if ( action.sa_handler == SDL_Parachute ) {
			action.sa_handler = SIG_DFL;
			sigaction(SDL_fatal_signals[i], &action, NULL);
		}
	}
#else
	void (*ohandler)(int);

	for ( i=0; SDL_fatal_signals[i]; ++i ) {
		ohandler = signal(SDL_fatal_signals[i], SIG_DFL);
		if ( ohandler != SDL_Parachute ) {
			signal(SDL_fatal_signals[i], ohandler);
		}
	}
#endif /* HAVE_SIGACTION */
}

#else

/* No signals on this platform, nothing to do.. */

void SDL_InstallParachute(void)
{
	return;
}

void SDL_UninstallParachute(void)
{
	return;
}

#endif /* HAVE_SIGNAL_H */