aio / timers: On timer modification, qemu_notify or aio_notify

[qemu.git] / qemu-timer.c

diff --git a/qemu-timer.c b/qemu-timer.c
index b045184c048a7273903724ca5afc2f008164bbed..746ba8b7e1f952d8622a0de8fdff3241400ea811 100644 (file)
--- a/qemu-timer.c
+++ b/qemu-timer.c
@@ -59,6 +59,7 @@ struct QEMUClock {
     bool enabled;
 };
 
+QEMUTimerListGroup main_loop_tlg;
 QEMUClock *qemu_clocks[QEMU_CLOCK_MAX];
 
 /* A QEMUTimerList is a list of timers attached to a clock. More
@@ -72,6 +73,8 @@ struct QEMUTimerList {
     QEMUClock *clock;
     QEMUTimer *active_timers;
     QLIST_ENTRY(QEMUTimerList) list;
+    QEMUTimerListNotifyCB *notify_cb;
+    void *notify_opaque;
 };
 
 struct qemu_alarm_timer {
@@ -242,7 +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;
 
@@ -256,13 +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)
@@ -287,7 +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;
 }
 
@@ -296,11 +304,20 @@ bool qemu_clock_use_for_deadline(QEMUClock *clock)
     return !(use_icount && (clock->type == QEMU_CLOCK_VIRTUAL));
 }
 
+void qemu_clock_notify(QEMUClock *clock)
+{
+    QEMUTimerList *timer_list;
+    QLIST_FOREACH(timer_list, &clock->timerlists, list) {
+        timerlist_notify(timer_list);
+    }
+}
+
 void qemu_clock_enable(QEMUClock *clock, bool enabled)
 {
     bool old = clock->enabled;
     clock->enabled = enabled;
     if (enabled && !old) {
+        qemu_clock_notify(clock);
         qemu_rearm_alarm_timer(alarm_timer);
     }
 }
@@ -385,6 +402,15 @@ 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
  */
@@ -505,9 +531,7 @@ 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);
     }
 }
 
@@ -564,6 +588,47 @@ bool qemu_run_timers(QEMUClock *clock)
     return timerlist_run_timers(clock->main_loop_timerlist);
 }
 
+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, cb, opaque);
+    }
+}
+
+void timerlistgroup_deinit(QEMUTimerListGroup *tlg)
+{
+    QEMUClockType type;
+    for (type = 0; type < QEMU_CLOCK_MAX; type++) {
+        timerlist_free(tlg->tl[type]);
+    }
+}
+
+bool timerlistgroup_run_timers(QEMUTimerListGroup *tlg)
+{
+    QEMUClockType type;
+    bool progress = false;
+    for (type = 0; type < QEMU_CLOCK_MAX; type++) {
+        progress |= timerlist_run_timers(tlg->tl[type]);
+    }
+    return progress;
+}
+
+int64_t timerlistgroup_deadline_ns(QEMUTimerListGroup *tlg)
+{
+    int64_t deadline = -1;
+    QEMUClockType type;
+    for (type = 0; type < QEMU_CLOCK_MAX; type++) {
+        if (qemu_clock_use_for_deadline(tlg->tl[type]->clock)) {
+            deadline = qemu_soonest_timeout(deadline,
+                                            timerlist_deadline_ns(
+                                                tlg->tl[type]));
+        }
+    }
+    return deadline;
+}
+
 int64_t qemu_get_clock_ns(QEMUClock *clock)
 {
     int64_t now, last;
@@ -605,6 +670,7 @@ void init_clocks(void)
     for (type = 0; type < QEMU_CLOCK_MAX; type++) {
         if (!qemu_clocks[type]) {
             qemu_clocks[type] = qemu_clock_new(type);
+            main_loop_tlg.tl[type] = qemu_clocks[type]->main_loop_timerlist;
         }
     }