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Not ignoring SIGCHLD, cause it renders system() unusable on QNX

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This commit is contained in:
Sergey Lyubka 2013-09-07 19:50:54 +01:00
parent 73d2b395d1
commit e28b3ca91d
1 changed files with 9 additions and 6 deletions
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15
build/main.c
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@ -77,7 +77,15 @@ static struct mg_context *ctx; // Set by start_mongoose()
#endif /* !CONFIG_FILE */
static void WINCDECL signal_handler(int sig_num) {
exit_flag = sig_num;
#if !defined(_WIN32)
// Do not do the trick with ignoring SIGCHLD, cause not all OSes (e.g. QNX)
// reap zombies if SIGCHLD is ignored. On QNX, for example, waitpid()
// fails if SIGCHLD is ignored, making system() non-functional.
if (sig_num == SIGCHLD) {
do {} while (waitpid(-1, &sig_num, WNOHANG) > 0);
} else
#endif
{ exit_flag = sig_num; }
}
static void die(const char *fmt, ...) {
@ -375,11 +383,6 @@ static void start_mongoose(int argc, char *argv[]) {
signal(SIGTERM, signal_handler);
signal(SIGINT, signal_handler);
#if !defined(_WIN32)
// Also ignoring SIGCHLD to let the OS to reap zombies properly.
(void) signal(SIGCHLD, SIG_IGN);
#endif
// Start Mongoose
memset(&callbacks, 0, sizeof(callbacks));
callbacks.log_message = &log_message;