qemu-timer: use atexit for quit_timers

Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

qemu-timer.c

@@ -840,6 +840,13 @@ static void alarm_timer_on_change_state_rearm(void *opaque, int running,
         qemu_rearm_alarm_timer((struct qemu_alarm_timer *) opaque);
 }
 
+static void quit_timers(void)
+{
+    struct qemu_alarm_timer *t = alarm_timer;
+    alarm_timer = NULL;
+    t->stop(t);
+}
+
 int init_timer_alarm(void)
 {
     struct qemu_alarm_timer *t = NULL;
@@ -859,6 +866,7 @@ int init_timer_alarm(void)
     }
 
     /* first event is at time 0 */
+    atexit(quit_timers);
     t->pending = 1;
     alarm_timer = t;
     qemu_add_vm_change_state_handler(alarm_timer_on_change_state_rearm, t);
@@ -869,13 +877,6 @@ fail:
     return err;
 }
 
-void quit_timers(void)
-{
-    struct qemu_alarm_timer *t = alarm_timer;
-    alarm_timer = NULL;
-    t->stop(t);
-}
-
 int qemu_calculate_timeout(void)
 {
     return 1000;

qemu-timer.h

@@ -62,7 +62,6 @@ void configure_alarms(char const *opt);
 int qemu_calculate_timeout(void);
 void init_clocks(void);
 int init_timer_alarm(void);
-void quit_timers(void);
 
 int64_t cpu_get_ticks(void);
 void cpu_enable_ticks(void);

vl.c

@@ -3565,7 +3565,6 @@ int main(int argc, char **argv, char **envp)
     os_setup_post();
 
     main_loop();
-    quit_timers();
     net_cleanup();
     res_free();