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qemu-timer: reinitialize timers after fork

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Timers are not inherited by the child of a fork(2), so just use
pthread_atfork to reinstate them after daemonize.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Paolo Bonzini 2012-11-02 15:43:22 +01:00 committed by Anthony Liguori
parent c166cb72f1
commit c8122c35e6
1 changed files with 14 additions and 0 deletions
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14
qemu-timer.c
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@ -742,6 +742,17 @@ static void quit_timers(void)
t->stop(t);
}
static void reinit_timers(void)
{
struct qemu_alarm_timer *t = alarm_timer;
t->stop(t);
if (t->start(t)) {
fprintf(stderr, "Internal timer error: aborting\n");
exit(1);
}
qemu_rearm_alarm_timer(t);
}
int init_timer_alarm(void)
{
struct qemu_alarm_timer *t = NULL;
@ -765,6 +776,9 @@ int init_timer_alarm(void)
}
atexit(quit_timers);
#ifdef CONFIG_POSIX
pthread_atfork(NULL, NULL, reinit_timers);
#endif
alarm_timer = t;
return 0;