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aio / timers: Add a notify callback to QEMUTimerList

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Add a notify pointer to QEMUTimerList so it knows what to notify
on a timer change.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Alex Bligh 2013-08-21 16:02:50 +01:00 • committed by Stefan Hajnoczi
parent dae21b98b9
commit d5541d8680
3 changed files with 52 additions and 11 deletions
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31
qemu-timer.c
View file

@ -73,6 +73,8 @@ struct QEMUTimerList {
QEMUClock *clock;
QEMUTimer *active_timers;
QLIST_ENTRY(QEMUTimerList) list;
QEMUTimerListNotifyCB *notify_cb;
void *notify_opaque;
};
struct qemu_alarm_timer {
@ -243,7 +245,9 @@ next:
}
}
static QEMUTimerList *timerlist_new_from_clock(QEMUClock *clock)
static QEMUTimerList *timerlist_new_from_clock(QEMUClock *clock,
QEMUTimerListNotifyCB *cb,
void *opaque)
{
QEMUTimerList *timer_list;
@ -257,13 +261,16 @@ static QEMUTimerList *timerlist_new_from_clock(QEMUClock *clock)
timer_list = g_malloc0(sizeof(QEMUTimerList));
timer_list->clock = clock;
timer_list->notify_cb = cb;
timer_list->notify_opaque = opaque;
QLIST_INSERT_HEAD(&clock->timerlists, timer_list, list);
return timer_list;
}
QEMUTimerList *timerlist_new(QEMUClockType type)
QEMUTimerList *timerlist_new(QEMUClockType type,
QEMUTimerListNotifyCB *cb, void *opaque)
{
return timerlist_new_from_clock(qemu_clock_ptr(type));
return timerlist_new_from_clock(qemu_clock_ptr(type), cb, opaque);
}
void timerlist_free(QEMUTimerList *timer_list)
@ -288,7 +295,7 @@ static QEMUClock *qemu_clock_new(QEMUClockType type)
clock->last = INT64_MIN;
QLIST_INIT(&clock->timerlists);
notifier_list_init(&clock->reset_notifiers);
clock->main_loop_timerlist = timerlist_new_from_clock(clock);
clock->main_loop_timerlist = timerlist_new_from_clock(clock, NULL, NULL);
return clock;
}
@ -386,6 +393,15 @@ QEMUTimerList *qemu_clock_get_main_loop_timerlist(QEMUClock *clock)
return clock->main_loop_timerlist;
}
void timerlist_notify(QEMUTimerList *timer_list)
{
if (timer_list->notify_cb) {
timer_list->notify_cb(timer_list->notify_opaque);
} else {
qemu_notify_event();
}
}
/* Transition function to convert a nanosecond timeout to ms
* This is used where a system does not support ppoll
*/
@ -507,7 +523,7 @@ void qemu_mod_timer_ns(QEMUTimer *ts, int64_t expire_time)
/* Interrupt execution to force deadline recalculation. */
qemu_clock_warp(ts->timer_list->clock);
if (use_icount) {
qemu_notify_event();
timerlist_notify(ts->timer_list);
}
}
}
@ -565,11 +581,12 @@ bool qemu_run_timers(QEMUClock *clock)
return timerlist_run_timers(clock->main_loop_timerlist);
}
void timerlistgroup_init(QEMUTimerListGroup *tlg)
void timerlistgroup_init(QEMUTimerListGroup *tlg,
QEMUTimerListNotifyCB *cb, void *opaque)
{
QEMUClockType type;
for (type = 0; type < QEMU_CLOCK_MAX; type++) {
tlg->tl[type] = timerlist_new(type);
tlg->tl[type] = timerlist_new(type, cb, opaque);
}
}