Mercurial > sdl-ios-xcode
annotate src/SDL_fatal.c @ 1077:f122afdfa025
The Darwin/MacOSX joystick code is largely copied from the HID Utilities
package...make the symbols defined by HID Utilities static inside SDL so that
an app can link against their own copy of this package without symbol clash.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Wed, 15 Jun 2005 23:41:57 +0000 |
| parents | 863da1c38c7e |
| children | 51a8702d8ecd |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 9 | |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* General fatal signal handling code for SDL */ | |
| 29 | |
| 30 #ifdef NO_SIGNAL_H | |
| 31 | |
| 32 /* No signals on this platform, nothing to do.. */ | |
| 33 | |
| 34 void SDL_InstallParachute(void) | |
| 35 { | |
| 36 return; | |
| 37 } | |
| 38 | |
| 39 void SDL_UninstallParachute(void) | |
| 40 { | |
| 41 return; | |
| 42 } | |
| 43 | |
| 44 #else | |
| 45 | |
| 46 #include <stdlib.h> | |
| 47 #include <stdio.h> | |
| 48 #include <signal.h> | |
| 49 #include <string.h> | |
| 50 | |
| 51 #include "SDL.h" | |
| 52 #include "SDL_fatal.h" | |
| 53 | |
|
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54 #ifdef __CYGWIN__ |
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55 #define DISABLE_STDIO |
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56 #endif |
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57 |
| 0 | 58 /* This installs some signal handlers for the more common fatal signals, |
| 59 so that if the programmer is lazy, the app doesn't die so horribly if | |
| 60 the program crashes. | |
| 61 */ | |
| 62 | |
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63 static void print_msg(const char *text) |
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64 { |
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65 #ifndef DISABLE_STDIO |
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66 fprintf(stderr, "%s", text); |
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67 #endif |
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68 } |
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69 |
| 0 | 70 static void SDL_Parachute(int sig) |
| 71 { | |
| 72 signal(sig, SIG_DFL); | |
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73 print_msg("Fatal signal: "); |
| 0 | 74 switch (sig) { |
| 75 case SIGSEGV: | |
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76 print_msg("Segmentation Fault"); |
| 0 | 77 break; |
| 78 #ifdef SIGBUS | |
| 79 #if SIGBUS != SIGSEGV | |
| 80 case SIGBUS: | |
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81 print_msg("Bus Error"); |
| 0 | 82 break; |
| 83 #endif | |
| 84 #endif /* SIGBUS */ | |
| 85 #ifdef SIGFPE | |
| 86 case SIGFPE: | |
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87 print_msg("Floating Point Exception"); |
| 0 | 88 break; |
| 89 #endif /* SIGFPE */ | |
| 90 #ifdef SIGQUIT | |
| 91 case SIGQUIT: | |
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92 print_msg("Keyboard Quit"); |
| 0 | 93 break; |
| 94 #endif /* SIGQUIT */ | |
| 95 #ifdef SIGPIPE | |
| 96 case SIGPIPE: | |
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97 print_msg("Broken Pipe"); |
| 0 | 98 break; |
| 99 #endif /* SIGPIPE */ | |
| 100 default: | |
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101 #ifndef DISABLE_STDIO |
| 0 | 102 fprintf(stderr, "# %d", sig); |
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103 #endif |
| 0 | 104 break; |
| 105 } | |
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106 print_msg(" (SDL Parachute Deployed)\n"); |
| 0 | 107 SDL_Quit(); |
| 108 exit(-sig); | |
| 109 } | |
| 110 | |
| 111 static int SDL_fatal_signals[] = { | |
| 112 SIGSEGV, | |
| 113 #ifdef SIGBUS | |
| 114 SIGBUS, | |
| 115 #endif | |
| 116 #ifdef SIGFPE | |
| 117 SIGFPE, | |
| 118 #endif | |
| 119 #ifdef SIGQUIT | |
| 120 SIGQUIT, | |
| 121 #endif | |
| 122 0 | |
| 123 }; | |
| 124 | |
| 125 void SDL_InstallParachute(void) | |
| 126 { | |
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127 /* Set a handler for any fatal signal not already handled */ |
| 0 | 128 int i; |
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129 #ifdef HAVE_SIGACTION |
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130 struct sigaction action; |
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131 |
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132 for ( i=0; SDL_fatal_signals[i]; ++i ) { |
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133 sigaction(SDL_fatal_signals[i], NULL, &action); |
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134 if ( action.sa_handler == SIG_DFL ) { |
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135 action.sa_handler = SDL_Parachute; |
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136 sigaction(SDL_fatal_signals[i], &action, NULL); |
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137 } |
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138 } |
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139 #ifdef SIGALRM |
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140 /* Set SIGALRM to be ignored -- necessary on Solaris */ |
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141 sigaction(SIGALRM, NULL, &action); |
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142 if ( action.sa_handler == SIG_DFL ) { |
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143 action.sa_handler = SIG_IGN; |
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144 sigaction(SIGALRM, &action, NULL); |
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145 } |
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146 #endif |
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147 #else |
| 0 | 148 void (*ohandler)(int); |
| 149 | |
| 150 for ( i=0; SDL_fatal_signals[i]; ++i ) { | |
| 151 ohandler = signal(SDL_fatal_signals[i], SDL_Parachute); | |
| 152 if ( ohandler != SIG_DFL ) { | |
| 153 signal(SDL_fatal_signals[i], ohandler); | |
| 154 } | |
| 155 } | |
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156 #endif /* HAVE_SIGACTION */ |
| 0 | 157 return; |
| 158 } | |
| 159 | |
| 160 void SDL_UninstallParachute(void) | |
| 161 { | |
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162 /* Remove a handler for any fatal signal handled */ |
| 0 | 163 int i; |
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164 #ifdef HAVE_SIGACTION |
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165 struct sigaction action; |
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166 |
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167 for ( i=0; SDL_fatal_signals[i]; ++i ) { |
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168 sigaction(SDL_fatal_signals[i], NULL, &action); |
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169 if ( action.sa_handler == SDL_Parachute ) { |
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170 action.sa_handler = SIG_DFL; |
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171 sigaction(SDL_fatal_signals[i], &action, NULL); |
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172 } |
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173 } |
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174 #else |
| 0 | 175 void (*ohandler)(int); |
| 176 | |
| 177 for ( i=0; SDL_fatal_signals[i]; ++i ) { | |
| 178 ohandler = signal(SDL_fatal_signals[i], SIG_DFL); | |
| 179 if ( ohandler != SDL_Parachute ) { | |
| 180 signal(SDL_fatal_signals[i], ohandler); | |
| 181 } | |
| 182 } | |
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183 #endif /* HAVE_SIGACTION */ |
| 0 | 184 } |
| 185 | |
| 186 #endif /* NO_SIGNAL_H */ |