ObjFW  Diff

		if ((kernelQueue = kqueue()) == -1)
			@throw [OFInitializationFailedException
			    exceptionWithClass: [self class]];

		changeList = [[OFDataArray alloc] initWithItemSize:
		    sizeof(struct kevent)];

		[self _addFileDescriptorForReading: cancelFD[0]];
		[self OF_addFileDescriptorForReading: cancelFD[0]];
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- (void)dealloc
{
	close(kernelQueue);
	[changeList release];

	[super dealloc];
}

- (void)_addFileDescriptorForReading: (int)fd
- (void)OF_addFileDescriptorForReading: (int)fd
{
	struct kevent event;

	EV_SET(&event, fd, EVFILT_READ, EV_ADD, 0, 0, 0);
	[changeList addItem: &event];
}

- (void)_addFileDescriptorForWriting: (int)fd
- (void)OF_addFileDescriptorForWriting: (int)fd
{
	struct kevent event;

	EV_SET(&event, fd, EVFILT_WRITE, EV_ADD, 0, 0, 0);
	[changeList addItem: &event];
}

- (void)_removeFileDescriptorForReading: (int)fd
- (void)OF_removeFileDescriptorForReading: (int)fd
{
	struct kevent event;

	EV_SET(&event, fd, EVFILT_READ, EV_DELETE, 0, 0, 0);
	[changeList addItem: &event];
}

- (void)_removeFileDescriptorForWriting: (int)fd
- (void)OF_removeFileDescriptorForWriting: (int)fd
{
	struct kevent event;

	EV_SET(&event, fd, EVFILT_WRITE, EV_DELETE, 0, 0, 0);
	[changeList addItem: &event];
}

- (BOOL)observeWithTimeout: (double)timeout
{
	void *pool = objc_autoreleasePoolPush();
	struct timespec timespec;
	struct kevent eventList[EVENTLIST_SIZE];
	int i, events, realEvents = 0;

	timespec.tv_sec = timeout;
	timespec.tv_nsec = (timeout - timespec.tv_sec) * 1000000000;

	[self _processQueue];
	[self OF_processQueue];

	if ([self _processCache]) {
	if ([self OF_processCache]) {
		objc_autoreleasePoolPop(pool);
		return YES;
	}

	objc_autoreleasePoolPop(pool);

	events = kevent(kernelQueue, [changeList cArray],