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Initial support for restarting lost processes during norespawn

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Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This commit is contained in:
Joachim Nilsson
2014-02-24 23:33:38 +01:00
parent cb874d7a94
commit 1d6cbe31fe
1 changed files with 22 additions and 1 deletions
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svc.c
+22 -1
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@@ -37,6 +37,7 @@
/* The registered services are kept in shared memory for easy read-only access
* by 3rd party APIs. Mostly because of the ability to, from the outside, query
* liveness state of all daemons that should run. */
static int was_stopped = 0;
static int svc_counter = 0; /* Number of registered services to monitor. */
static svc_t *services = NULL; /* List of registered services, in shared memory. */
@@ -347,11 +348,29 @@ static int is_norespawn(void)
fexist("/tmp/norespawn");
}
static void restart_any_lost_procs(void)
{
svc_t *svc;
for (svc = svc_iterator(1); svc; svc = svc_iterator(0)) {
if (svc->pid > 0 && pid_alive(svc->pid))
continue;
svc_start(svc);
}
}
void svc_monitor(void)
{
pid_t lost;
svc_t *svc;
if (was_stopped && !is_norespawn()) {
was_stopped = 0;
restart_any_lost_procs();
return;
}
lost = waitpid(-1, NULL, WNOHANG);
if (lost < 1)
return;
@@ -360,8 +379,10 @@ void svc_monitor(void)
return;
/* Power user at the console, don't respawn tasks. */
if (is_norespawn())
if (is_norespawn()) {
was_stopped = 1;
return;
}
if (tty_respawn(lost))
return;