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Make EVLOOP_ONCE ignore internal events

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Merely getting an internal notification event from having an event
added or deleted from another thread should not cause
event_base_loop(base, EVLOOP_ONCE) to exit; previously, it did.
This commit is contained in:
Nick Mathewson 2010-11-14 19:25:54 -05:00
parent 1ac5b2303a
commit 0617a81820
1 changed files with 9 additions and 6 deletions
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15
event.c
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@ -134,7 +134,7 @@ static void event_queue_insert(struct event_base *, struct event *, int);
static void event_queue_remove(struct event_base *, struct event *, int); static void event_queue_remove(struct event_base *, struct event *, int);
static int event_haveevents(struct event_base *); static int event_haveevents(struct event_base *);
static void event_process_active(struct event_base *); static int event_process_active(struct event_base *);
static int timeout_next(struct event_base *, struct timeval **); static int timeout_next(struct event_base *, struct timeval **);
static void timeout_process(struct event_base *); static void timeout_process(struct event_base *);
@ -1341,19 +1341,19 @@ event_process_deferred_callbacks(struct deferred_cb_queue *queue, int *breakptr)
* priority ones. * priority ones.
*/ */
static void static int
event_process_active(struct event_base *base) event_process_active(struct event_base *base)
{ {
/* Caller must hold th_base_lock */ /* Caller must hold th_base_lock */
struct event_list *activeq = NULL; struct event_list *activeq = NULL;
int i, c; int i, c = 0;
for (i = 0; i < base->nactivequeues; ++i) { for (i = 0; i < base->nactivequeues; ++i) {
if (TAILQ_FIRST(&base->activequeues[i]) != NULL) { if (TAILQ_FIRST(&base->activequeues[i]) != NULL) {
activeq = &base->activequeues[i]; activeq = &base->activequeues[i];
c = event_process_active_single_queue(base, activeq); c = event_process_active_single_queue(base, activeq);
if (c < 0) if (c < 0)
return; return -1;
else if (c > 0) else if (c > 0)
break; /* Processed a real event; do not break; /* Processed a real event; do not
* consider lower-priority events */ * consider lower-priority events */
@ -1363,6 +1363,7 @@ event_process_active(struct event_base *base)
} }
event_process_deferred_callbacks(&base->defer_queue,&base->event_break); event_process_deferred_callbacks(&base->defer_queue,&base->event_break);
return c;
} }
/* /*
@ -1547,8 +1548,10 @@ event_base_loop(struct event_base *base, int flags)
timeout_process(base); timeout_process(base);
if (N_ACTIVE_CALLBACKS(base)) { if (N_ACTIVE_CALLBACKS(base)) {
event_process_active(base); int n = event_process_active(base);
if (!base->event_count_active && (flags & EVLOOP_ONCE)) if ((flags & EVLOOP_ONCE)
&& base->event_count_active == 0
&& n != 0)
done = 1; done = 1;
} else if (flags & EVLOOP_NONBLOCK) } else if (flags & EVLOOP_NONBLOCK)
done = 1; done = 1;