author | Sam Lantinga <slouken@libsdl.org> |
Wed, 01 Feb 2006 06:32:25 +0000 | |
changeset 1312 | c9b51268668f |
parent 1152 | 51a8702d8ecd |
child 1330 | 450721ad5436 |
permissions | -rw-r--r-- |
0 | 1 |
/* |
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SDL - Simple DirectMedia Layer |
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Copyright (C) 1997-2006 Sam Lantinga |
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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 Lesser General Public |
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License as published by the Free Software Foundation; either |
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version 2.1 of the License, or (at your option) any later version. |
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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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Lesser General Public License for more details. |
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You should have received a copy of the GNU Lesser General Public |
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License along with this library; if not, write to the Free Software |
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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Sam Lantinga |
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slouken@libsdl.org |
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*/ |
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#ifdef _WIN32_WCE |
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#define NO_SIGNAL_H |
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#endif |
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/* General fatal signal handling code for SDL */ |
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#ifdef NO_SIGNAL_H |
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/* No signals on this platform, nothing to do.. */ |
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void SDL_InstallParachute(void) |
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{ |
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return; |
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} |
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void SDL_UninstallParachute(void) |
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{ |
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return; |
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} |
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#else |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <signal.h> |
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#include <string.h> |
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#include "SDL.h" |
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#include "SDL_fatal.h" |
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#ifdef __CYGWIN__ |
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#define DISABLE_STDIO |
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#endif |
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/* This installs some signal handlers for the more common fatal signals, |
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so that if the programmer is lazy, the app doesn't die so horribly if |
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the program crashes. |
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*/ |
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static void print_msg(const char *text) |
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{ |
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#ifndef DISABLE_STDIO |
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fprintf(stderr, "%s", text); |
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#endif |
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} |
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static void SDL_Parachute(int sig) |
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{ |
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signal(sig, SIG_DFL); |
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print_msg("Fatal signal: "); |
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switch (sig) { |
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case SIGSEGV: |
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print_msg("Segmentation Fault"); |
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break; |
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#ifdef SIGBUS |
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#if SIGBUS != SIGSEGV |
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case SIGBUS: |
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print_msg("Bus Error"); |
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break; |
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#endif |
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#endif /* SIGBUS */ |
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#ifdef SIGFPE |
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case SIGFPE: |
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print_msg("Floating Point Exception"); |
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break; |
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#endif /* SIGFPE */ |
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#ifdef SIGQUIT |
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case SIGQUIT: |
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print_msg("Keyboard Quit"); |
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break; |
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#endif /* SIGQUIT */ |
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#ifdef SIGPIPE |
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case SIGPIPE: |
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print_msg("Broken Pipe"); |
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break; |
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#endif /* SIGPIPE */ |
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default: |
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#ifndef DISABLE_STDIO |
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fprintf(stderr, "# %d", sig); |
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#endif |
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break; |
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} |
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print_msg(" (SDL Parachute Deployed)\n"); |
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SDL_Quit(); |
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exit(-sig); |
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} |
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static int SDL_fatal_signals[] = { |
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SIGSEGV, |
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#ifdef SIGBUS |
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SIGBUS, |
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#endif |
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#ifdef SIGFPE |
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SIGFPE, |
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#endif |
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#ifdef SIGQUIT |
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SIGQUIT, |
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#endif |
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0 |
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}; |
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void SDL_InstallParachute(void) |
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{ |
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/* Set a handler for any fatal signal not already handled */ |
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int i; |
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#ifdef HAVE_SIGACTION |
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struct sigaction action; |
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for ( i=0; SDL_fatal_signals[i]; ++i ) { |
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sigaction(SDL_fatal_signals[i], NULL, &action); |
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if ( action.sa_handler == SIG_DFL ) { |
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action.sa_handler = SDL_Parachute; |
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sigaction(SDL_fatal_signals[i], &action, NULL); |
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} |
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} |
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#ifdef SIGALRM |
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/* Set SIGALRM to be ignored -- necessary on Solaris */ |
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sigaction(SIGALRM, NULL, &action); |
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if ( action.sa_handler == SIG_DFL ) { |
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action.sa_handler = SIG_IGN; |
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sigaction(SIGALRM, &action, NULL); |
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} |
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#endif |
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#else |
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void (*ohandler)(int); |
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for ( i=0; SDL_fatal_signals[i]; ++i ) { |
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ohandler = signal(SDL_fatal_signals[i], SDL_Parachute); |
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if ( ohandler != SIG_DFL ) { |
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signal(SDL_fatal_signals[i], ohandler); |
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} |
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} |
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#endif /* HAVE_SIGACTION */ |
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return; |
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} |
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void SDL_UninstallParachute(void) |
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{ |
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/* Remove a handler for any fatal signal handled */ |
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int i; |
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#ifdef HAVE_SIGACTION |
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struct sigaction action; |
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for ( i=0; SDL_fatal_signals[i]; ++i ) { |
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sigaction(SDL_fatal_signals[i], NULL, &action); |
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if ( action.sa_handler == SDL_Parachute ) { |
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action.sa_handler = SIG_DFL; |
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sigaction(SDL_fatal_signals[i], &action, NULL); |
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} |
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} |
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#else |
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void (*ohandler)(int); |
175 |
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176 |
for ( i=0; SDL_fatal_signals[i]; ++i ) { |
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177 |
ohandler = signal(SDL_fatal_signals[i], SIG_DFL); |
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178 |
if ( ohandler != SDL_Parachute ) { |
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179 |
signal(SDL_fatal_signals[i], ohandler); |
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180 |
} |
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181 |
} |
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#endif /* HAVE_SIGACTION */ |
0 | 183 |
} |
184 |
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185 |
#endif /* NO_SIGNAL_H */ |