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New shutdown sequence

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This commit is contained in:
Michiel Broek 2003-12-23 21:07:33 +00:00
parent 0a033348a5
commit 530af1e724
1 changed files with 24 additions and 2 deletions
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26
mbtask/mbtask.c
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@ -109,6 +109,7 @@ extern pp_list *pl; /* List of tty ports */
extern int ipmailers; /* TCP/IP mail sessions */ extern int ipmailers; /* TCP/IP mail sessions */
extern int tosswait; /* Toss wait timer */ extern int tosswait; /* Toss wait timer */
extern pid_t mypid; /* Pid of daemon */ extern pid_t mypid; /* Pid of daemon */
int G_Shutdown = FALSE; /* Global shutdown */
int T_Shutdown = FALSE; /* Shutdown threads */ int T_Shutdown = FALSE; /* Shutdown threads */
int nodaemon = FALSE; /* Run in foreground */ int nodaemon = FALSE; /* Run in foreground */
extern int cmd_run; /* Cmd running */ extern int cmd_run; /* Cmd running */
@ -649,6 +650,24 @@ int checktasks(int onsig)
/*
* This function triggers the shutdown and is only installed for SIGTERM
* and SIGINT. On NetBSD the threads signal handlers cannot be disabled,
* so in fact all threads call this function as soon as one of these
* signals is received. The first one arrived will initiate the shutdown.
*/
void start_shutdown(int onsig)
{
Syslog('+', "Trigger shutdown on signal %s", SigName[onsig]);
signal(onsig, SIG_IGN);
G_Shutdown = TRUE;
}
/*
* Normal fatal signal handler, but also used during shutdown.
*/
void die(int onsig) void die(int onsig)
{ {
int i, count; int i, count;
@ -985,9 +1004,10 @@ void start_scheduler(void)
/* /*
* Sleep until we die * Sleep until we die
*/ */
while (TRUE) { while (! G_Shutdown) {
sleep(1); sleep(1);
} }
die(SIGTERM);
} }
@ -1378,8 +1398,10 @@ int main(int argc, char **argv)
* but that's live. This daemon should only be stopped by SIGTERM. * but that's live. This daemon should only be stopped by SIGTERM.
*/ */
for (i = 0; i < NSIG; i++) { for (i = 0; i < NSIG; i++) {
if ((i == SIGHUP) || (i == SIGINT) || (i == SIGBUS) || (i == SIGILL) || (i == SIGSEGV) || (i == SIGTERM)) if ((i == SIGHUP) || (i == SIGBUS) || (i == SIGILL) || (i == SIGSEGV))
signal(i, (void (*))die); signal(i, (void (*))die);
else if ((i == SIGINT) || (i == SIGTERM))
signal(i, (void (*))start_shutdown);
else if ((i != SIGKILL) && (i != SIGSTOP)) else if ((i != SIGKILL) && (i != SIGSTOP))
signal(i, SIG_IGN); signal(i, SIG_IGN);
} }