Mercurial > sdl-ios-xcode
annotate src/SDL_fatal.c @ 281:c5010ab8ba35
Added initial support for Atari (thanks Patrice!)
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 17 Feb 2002 19:54:28 +0000 |
parents | e8157fcb3114 |
children | f6ffac90895c |
rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga | |
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 #ifdef SIGPIPE | |
123 SIGPIPE, | |
124 #endif | |
125 0 | |
126 }; | |
127 | |
128 void SDL_InstallParachute(void) | |
129 { | |
130 int i; | |
131 void (*ohandler)(int); | |
132 | |
133 /* Set a handler for any fatal signal not already handled */ | |
134 for ( i=0; SDL_fatal_signals[i]; ++i ) { | |
135 ohandler = signal(SDL_fatal_signals[i], SDL_Parachute); | |
136 if ( ohandler != SIG_DFL ) { | |
137 signal(SDL_fatal_signals[i], ohandler); | |
138 } | |
139 } | |
140 #ifdef SIGALRM | |
141 /* Set SIGALRM to be ignored -- necessary on Solaris */ | |
142 { | |
143 struct sigaction action, oaction; | |
144 | |
145 /* Set SIG_IGN action */ | |
146 memset(&action, 0, (sizeof action)); | |
147 action.sa_handler = SIG_IGN; | |
148 sigaction(SIGALRM, &action, &oaction); | |
149 | |
150 /* Reset original action if it was already being handled */ | |
151 if ( oaction.sa_handler != SIG_DFL ) { | |
152 sigaction(SIGALRM, &oaction, NULL); | |
153 } | |
154 } | |
155 #endif | |
156 return; | |
157 } | |
158 | |
159 void SDL_UninstallParachute(void) | |
160 { | |
161 int i; | |
162 void (*ohandler)(int); | |
163 | |
164 /* Remove a handler for any fatal signal handled */ | |
165 for ( i=0; SDL_fatal_signals[i]; ++i ) { | |
166 ohandler = signal(SDL_fatal_signals[i], SIG_DFL); | |
167 if ( ohandler != SDL_Parachute ) { | |
168 signal(SDL_fatal_signals[i], ohandler); | |
169 } | |
170 } | |
171 } | |
172 | |
173 #endif /* NO_SIGNAL_H */ |