Mercurial > sdl-ios-xcode
annotate src/SDL_fatal.c @ 1312:c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
I batch edited these files, so please let me know if I've accidentally removed anybody's
credit here.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 01 Feb 2006 06:32:25 +0000 |
| parents | 51a8702d8ecd |
| children | 450721ad5436 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
|
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 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 | |
|
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13 Lesser General Public License for more details. |
| 0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
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23 #ifdef _WIN32_WCE |
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24 #define NO_SIGNAL_H |
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25 #endif |
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26 |
| 0 | 27 /* General fatal signal handling code for SDL */ |
| 28 | |
| 29 #ifdef NO_SIGNAL_H | |
| 30 | |
| 31 /* No signals on this platform, nothing to do.. */ | |
| 32 | |
| 33 void SDL_InstallParachute(void) | |
| 34 { | |
| 35 return; | |
| 36 } | |
| 37 | |
| 38 void SDL_UninstallParachute(void) | |
| 39 { | |
| 40 return; | |
| 41 } | |
| 42 | |
| 43 #else | |
| 44 | |
| 45 #include <stdlib.h> | |
| 46 #include <stdio.h> | |
| 47 #include <signal.h> | |
| 48 #include <string.h> | |
| 49 | |
| 50 #include "SDL.h" | |
| 51 #include "SDL_fatal.h" | |
| 52 | |
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53 #ifdef __CYGWIN__ |
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54 #define DISABLE_STDIO |
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55 #endif |
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56 |
| 0 | 57 /* This installs some signal handlers for the more common fatal signals, |
| 58 so that if the programmer is lazy, the app doesn't die so horribly if | |
| 59 the program crashes. | |
| 60 */ | |
| 61 | |
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62 static void print_msg(const char *text) |
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63 { |
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64 #ifndef DISABLE_STDIO |
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65 fprintf(stderr, "%s", text); |
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66 #endif |
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67 } |
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68 |
| 0 | 69 static void SDL_Parachute(int sig) |
| 70 { | |
| 71 signal(sig, SIG_DFL); | |
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72 print_msg("Fatal signal: "); |
| 0 | 73 switch (sig) { |
| 74 case SIGSEGV: | |
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75 print_msg("Segmentation Fault"); |
| 0 | 76 break; |
| 77 #ifdef SIGBUS | |
| 78 #if SIGBUS != SIGSEGV | |
| 79 case SIGBUS: | |
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80 print_msg("Bus Error"); |
| 0 | 81 break; |
| 82 #endif | |
| 83 #endif /* SIGBUS */ | |
| 84 #ifdef SIGFPE | |
| 85 case SIGFPE: | |
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86 print_msg("Floating Point Exception"); |
| 0 | 87 break; |
| 88 #endif /* SIGFPE */ | |
| 89 #ifdef SIGQUIT | |
| 90 case SIGQUIT: | |
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91 print_msg("Keyboard Quit"); |
| 0 | 92 break; |
| 93 #endif /* SIGQUIT */ | |
| 94 #ifdef SIGPIPE | |
| 95 case SIGPIPE: | |
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96 print_msg("Broken Pipe"); |
| 0 | 97 break; |
| 98 #endif /* SIGPIPE */ | |
| 99 default: | |
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100 #ifndef DISABLE_STDIO |
| 0 | 101 fprintf(stderr, "# %d", sig); |
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102 #endif |
| 0 | 103 break; |
| 104 } | |
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105 print_msg(" (SDL Parachute Deployed)\n"); |
| 0 | 106 SDL_Quit(); |
| 107 exit(-sig); | |
| 108 } | |
| 109 | |
| 110 static int SDL_fatal_signals[] = { | |
| 111 SIGSEGV, | |
| 112 #ifdef SIGBUS | |
| 113 SIGBUS, | |
| 114 #endif | |
| 115 #ifdef SIGFPE | |
| 116 SIGFPE, | |
| 117 #endif | |
| 118 #ifdef SIGQUIT | |
| 119 SIGQUIT, | |
| 120 #endif | |
| 121 0 | |
| 122 }; | |
| 123 | |
| 124 void SDL_InstallParachute(void) | |
| 125 { | |
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126 /* Set a handler for any fatal signal not already handled */ |
| 0 | 127 int i; |
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128 #ifdef HAVE_SIGACTION |
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129 struct sigaction action; |
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130 |
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131 for ( i=0; SDL_fatal_signals[i]; ++i ) { |
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132 sigaction(SDL_fatal_signals[i], NULL, &action); |
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133 if ( action.sa_handler == SIG_DFL ) { |
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134 action.sa_handler = SDL_Parachute; |
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135 sigaction(SDL_fatal_signals[i], &action, NULL); |
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136 } |
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137 } |
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138 #ifdef SIGALRM |
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139 /* Set SIGALRM to be ignored -- necessary on Solaris */ |
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140 sigaction(SIGALRM, NULL, &action); |
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141 if ( action.sa_handler == SIG_DFL ) { |
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142 action.sa_handler = SIG_IGN; |
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143 sigaction(SIGALRM, &action, NULL); |
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144 } |
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145 #endif |
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146 #else |
| 0 | 147 void (*ohandler)(int); |
| 148 | |
| 149 for ( i=0; SDL_fatal_signals[i]; ++i ) { | |
| 150 ohandler = signal(SDL_fatal_signals[i], SDL_Parachute); | |
| 151 if ( ohandler != SIG_DFL ) { | |
| 152 signal(SDL_fatal_signals[i], ohandler); | |
| 153 } | |
| 154 } | |
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155 #endif /* HAVE_SIGACTION */ |
| 0 | 156 return; |
| 157 } | |
| 158 | |
| 159 void SDL_UninstallParachute(void) | |
| 160 { | |
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161 /* Remove a handler for any fatal signal handled */ |
| 0 | 162 int i; |
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163 #ifdef HAVE_SIGACTION |
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164 struct sigaction action; |
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165 |
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166 for ( i=0; SDL_fatal_signals[i]; ++i ) { |
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167 sigaction(SDL_fatal_signals[i], NULL, &action); |
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168 if ( action.sa_handler == SDL_Parachute ) { |
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169 action.sa_handler = SIG_DFL; |
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170 sigaction(SDL_fatal_signals[i], &action, NULL); |
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171 } |
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172 } |
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173 #else |
| 0 | 174 void (*ohandler)(int); |
| 175 | |
| 176 for ( i=0; SDL_fatal_signals[i]; ++i ) { | |
| 177 ohandler = signal(SDL_fatal_signals[i], SIG_DFL); | |
| 178 if ( ohandler != SDL_Parachute ) { | |
| 179 signal(SDL_fatal_signals[i], ohandler); | |
| 180 } | |
| 181 } | |
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182 #endif /* HAVE_SIGACTION */ |
| 0 | 183 } |
| 184 | |
| 185 #endif /* NO_SIGNAL_H */ |