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Keep track of maximum number of events in-flight in the SDL queue at once.

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This commit is contained in:
Ryan C. Gordon 2015-03-25 10:19:10 -04:00
parent 3f9f0027bc
commit 87ef19c44a
1 changed files with 14 additions and 1 deletions
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15
src/events/SDL_events.c
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@ -75,12 +75,13 @@ static struct
SDL_mutex *lock;
volatile SDL_bool active;
volatile int count;
volatile int max_events_seen;
SDL_EventEntry *head;
SDL_EventEntry *tail;
SDL_EventEntry *free;
SDL_SysWMEntry *wmmsg_used;
SDL_SysWMEntry *wmmsg_free;
} SDL_EventQ = { NULL, SDL_TRUE };
} SDL_EventQ = { NULL, SDL_TRUE, 0, 0, NULL, NULL, NULL, NULL, NULL };
/* Public functions */
@ -88,6 +89,7 @@ static struct
void
SDL_StopEventLoop(void)
{
const char *report = SDL_GetHint("SDL_EVENT_QUEUE_STATISTICS");
int i;
SDL_EventEntry *entry;
SDL_SysWMEntry *wmmsg;
@ -98,6 +100,11 @@ SDL_StopEventLoop(void)
SDL_EventQ.active = SDL_FALSE;
if (report && SDL_atoi(report)) {
SDL_Log("SDL EVENT QUEUE: Maximum events in-flight: %d\n",
SDL_EventQ.max_events_seen);
}
/* Clean out EventQ */
for (entry = SDL_EventQ.head; entry; ) {
SDL_EventEntry *next = entry->next;
@ -119,7 +126,9 @@ SDL_StopEventLoop(void)
SDL_free(wmmsg);
wmmsg = next;
}
SDL_EventQ.count = 0;
SDL_EventQ.max_events_seen = 0;
SDL_EventQ.head = NULL;
SDL_EventQ.tail = NULL;
SDL_EventQ.free = NULL;
@ -218,6 +227,10 @@ SDL_AddEvent(SDL_Event * event)
}
++SDL_EventQ.count;
if (SDL_EventQ.count > SDL_EventQ.max_events_seen) {
SDL_EventQ.max_events_seen = SDL_EventQ.count;
}
return 1;
}