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@siqin
Created August 14, 2012 13:10
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RunLoop Observer
#pragma mark - RunLoop Observer
- (void)onNewThread:(id)info
{
NSRunLoop *runloop = [NSRunLoop currentRunLoop];
if (!runloop) {
return ;
}
if (runloop == [NSRunLoop mainRunLoop]) {
NSLog(@"Current runloop is the main runloop.\n");
} else {
NSLog(@"Current runloop is not the main runloop.\n");
}
NSString *currentMode = [runloop currentMode];
if (currentMode) {
NSLog(@"Limit date for %@ is %@.\n", currentMode, [runloop limitDateForMode:currentMode]);
}
NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:5.0f target:self selector:@selector(onTimerFired:) userInfo:nil repeats:NO];
[runloop addTimer:timer forMode:NSRunLoopCommonModes];
CFRunLoopObserverContext context = {
0,
self,
NULL,
NULL,
NULL
};
CFRunLoopObserverRef observerRef = CFRunLoopObserverCreate(kCFAllocatorDefault, kCFRunLoopAllActivities, YES, 0, &runloopObserverCallback, &context);
CFRunLoopAddObserver([runloop getCFRunLoop], observerRef, kCFRunLoopCommonModes);
[runloop run];
CFRunLoopRemoveObserver([runloop getCFRunLoop], observerRef, kCFRunLoopCommonModes);
CFRelease(observerRef);
}
- (void)onTimerFired:(id)info
{
// Log will be put when a TestObject instance is deallocated
TestObject *testObject = [[TestObject alloc] autorelease];
testObject = nil;
}
static void runloopObserverCallback(CFRunLoopObserverRef observer, CFRunLoopActivity activity, void *info)
{
CFRunLoopActivity currentActivity = activity;
switch (currentActivity) {
case kCFRunLoopEntry:
NSLog(@"kCFRunLoopEntry \n");
break;
case kCFRunLoopBeforeTimers:
NSLog(@"kCFRunLoopBeforeTimers \n");
break;
case kCFRunLoopBeforeSources:
NSLog(@"kCFRunLoopBeforeSources \n");
break;
case kCFRunLoopBeforeWaiting:
NSLog(@"kCFRunLoopBeforeWaiting \n");
break;
case kCFRunLoopAfterWaiting:
NSLog(@"kCFRunLoopAfterWaiting \n");
break;
case kCFRunLoopExit:
NSLog(@"kCFRunLoopExit \n");
break;
default:
NSLog(@"Activity not recognized!\n");
break;
}
}
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