diff options
Diffstat (limited to 'distrib/sdl-1.2.15/src/SDL_fatal.c')
| -rw-r--r-- | distrib/sdl-1.2.15/src/SDL_fatal.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/src/SDL_fatal.c b/distrib/sdl-1.2.15/src/SDL_fatal.c new file mode 100644 index 0000000..d422a01 --- /dev/null +++ b/distrib/sdl-1.2.15/src/SDL_fatal.c @@ -0,0 +1,134 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2012 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 */ |