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comparison src/audio/alsa/SDL_alsa_audio.c @ 3068:b21348d47cab

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Fixed bug #633 Description From Michael Stone 2008-09-25 19:27:29 (-) [reply] To determine whether a pid is occupied with the kill(pid, 0) idiom, you have to test #include <signal.h> #include <errno.h> kill(pid, 0) < 0 && errno == ESRCH not just #include <signal.h> kill(pid, 0) < 0 otherwise you get incorrect results when pid is running as a different user (causing kill(pid, 0) to return -1 + EPERM). src/audio/alsa/SDL_alsa_audio.c is certainly affected by this bug in both 1.2.13 and 1.3-trunk. It probably occurs in other places as well.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 17 Feb 2009 05:17:51 +0000
parents 1e431c2631ee
children 4e83cdb58134
comparison
equal deleted inserted replaced
3067:bcd41b269091 3068:b21348d47cab
228 /* Note that this only works with thread implementations 228 /* Note that this only works with thread implementations
229 that use a different process id for each thread. 229 that use a different process id for each thread.
230 */ 230 */
231 /* Check every 10 loops */ 231 /* Check every 10 loops */
232 if (this->hidden->parent && (((++cnt) % 10) == 0)) { 232 if (this->hidden->parent && (((++cnt) % 10) == 0)) {
233 if (kill(this->hidden->parent, 0) < 0) { 233 if (kill(this->hidden->parent, 0) < 0 && errno == ESRCH) {
234 this->enabled = 0; 234 this->enabled = 0;
235 } 235 }
236 } 236 }
237 } 237 }
238 } 238 }