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- /*
- SDL - Simple DirectMedia Layer
- Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
-
- 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; if not, write to the Free
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
- Sam Lantinga
- slouken@devolution.com
- */
-
- #ifdef SAVE_RCSID
- static char rcsid =
- "@(#) $Id: SDL_fatal.c,v 1.2.2.4 2001/02/10 07:20:03 hercules Exp $";
- #endif
-
- /* General fatal signal handling code for SDL */
-
- #ifdef NO_SIGNAL_H
-
- /* No signals on this platform, nothing to do.. */
-
- void SDL_InstallParachute(void)
- {
- return;
- }
-
- void SDL_UninstallParachute(void)
- {
- return;
- }
-
- #else
-
- #include <stdlib.h>
- #include <stdio.h>
- #include <signal.h>
- #include <string.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);
- fprintf(stderr, "Fatal signal: ");
- switch (sig) {
- case SIGSEGV:
- fprintf(stderr, "Segmentation Fault");
- break;
- #ifdef SIGBUS
- #if SIGBUS != SIGSEGV
- case SIGBUS:
- fprintf(stderr, "Bus Error");
- break;
- #endif
- #endif /* SIGBUS */
- #ifdef SIGFPE
- case SIGFPE:
- fprintf(stderr, "Floating Point Exception");
- break;
- #endif /* SIGFPE */
- #ifdef SIGQUIT
- case SIGQUIT:
- fprintf(stderr, "Keyboard Quit");
- break;
- #endif /* SIGQUIT */
- #ifdef SIGPIPE
- case SIGPIPE:
- fprintf(stderr, "Broken Pipe");
- break;
- #endif /* SIGPIPE */
- default:
- fprintf(stderr, "# %d", sig);
- break;
- }
- fprintf(stderr, " (SDL Parachute Deployed)\n");
- SDL_Quit();
- exit(-sig);
- }
-
- static int SDL_fatal_signals[] = {
- SIGSEGV,
- #ifdef SIGBUS
- SIGBUS,
- #endif
- #ifdef SIGFPE
- SIGFPE,
- #endif
- #ifdef SIGQUIT
- SIGQUIT,
- #endif
- #ifdef SIGPIPE
- SIGPIPE,
- #endif
- 0
- };
-
- void SDL_InstallParachute(void)
- {
- int i;
- void (*ohandler)(int);
-
- /* Set a handler for any fatal signal not already handled */
- 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);
- }
- }
- #ifdef SIGALRM
- /* Set SIGALRM to be ignored -- necessary on Solaris */
- {
- struct sigaction action, oaction;
-
- /* Set SIG_IGN action */
- memset(&action, 0, (sizeof action));
- action.sa_handler = SIG_IGN;
- sigaction(SIGALRM, &action, &oaction);
-
- /* Reset original action if it was already being handled */
- if ( oaction.sa_handler != SIG_DFL ) {
- sigaction(SIGALRM, &oaction, NULL);
- }
- }
- #endif
- return;
- }
-
- void SDL_UninstallParachute(void)
- {
- int i;
- void (*ohandler)(int);
-
- /* Remove a handler for any fatal signal handled */
- 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 /* NO_SIGNAL_H */
-