diff options
| -rw-r--r-- | qemu-timer.c | 51 |
1 files changed, 32 insertions, 19 deletions
diff --git a/qemu-timer.c b/qemu-timer.c index 2b533da2c7..0305ad5313 100644 --- a/qemu-timer.c +++ b/qemu-timer.c @@ -355,6 +355,34 @@ static void timer_del_locked(QEMUTimerList *timer_list, QEMUTimer *ts) } } +static bool timer_mod_ns_locked(QEMUTimerList *timer_list, + QEMUTimer *ts, int64_t expire_time) +{ + QEMUTimer **pt, *t; + + /* add the timer in the sorted list */ + pt = &timer_list->active_timers; + for (;;) { + t = *pt; + if (!timer_expired_ns(t, expire_time)) { + break; + } + pt = &t->next; + } + ts->expire_time = MAX(expire_time, 0); + ts->next = *pt; + *pt = ts; + + return pt == &timer_list->active_timers; +} + +static void timerlist_rearm(QEMUTimerList *timer_list) +{ + /* Interrupt execution to force deadline recalculation. */ + qemu_clock_warp(timer_list->clock->type); + timerlist_notify(timer_list); +} + /* stop a timer, but do not dealloc it */ void timer_del(QEMUTimer *ts) { @@ -370,30 +398,15 @@ void timer_del(QEMUTimer *ts) void timer_mod_ns(QEMUTimer *ts, int64_t expire_time) { QEMUTimerList *timer_list = ts->timer_list; - QEMUTimer **pt, *t; + bool rearm; qemu_mutex_lock(&timer_list->active_timers_lock); timer_del_locked(timer_list, ts); - - /* add the timer in the sorted list */ - pt = &timer_list->active_timers; - for(;;) { - t = *pt; - if (!timer_expired_ns(t, expire_time)) { - break; - } - pt = &t->next; - } - ts->expire_time = MAX(expire_time, 0); - ts->next = *pt; - *pt = ts; + rearm = timer_mod_ns_locked(timer_list, ts, expire_time); qemu_mutex_unlock(&timer_list->active_timers_lock); - /* Rearm if necessary */ - if (pt == &timer_list->active_timers) { - /* Interrupt execution to force deadline recalculation. */ - qemu_clock_warp(timer_list->clock->type); - timerlist_notify(timer_list); + if (rearm) { + timerlist_rearm(timer_list); } } |