ObjFW  Diff

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@implementation OFKernelEventObserver_kqueue
- init
{
	self = [super init];

	@try {
		struct kevent event;

#ifdef HAVE_KQUEUE1
		if ((_kernelQueue = kqueue1(O_CLOEXEC)) == -1)
			@throw [OFInitializationFailedException
			    exceptionWithClass: [self class]];
#else
		int flags;

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

		if ((flags = fcntl(_kernelQueue, F_GETFD, 0)) != -1)
			fcntl(_kernelQueue, F_SETFD, flags | FD_CLOEXEC);
#endif

		_changeList = [[OFDataArray alloc] initWithItemSize:
		    sizeof(struct kevent)];
		_removedArray = [[OFMutableArray alloc] init];
		EV_SET(&event, _cancelFD[0], EVFILT_READ, EV_ADD, 0, 0, 0);
		[_changeList addItem: &event];

		[self OF_addFileDescriptorForReading: _cancelFD[0]];
		_removedArray = [[OFMutableArray alloc] init];
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- (void)dealloc
{
	close(_kernelQueue);

	[_changeList release];
	[_removedArray release];

	[super dealloc];
}

- (void)OF_addFileDescriptorForReading: (int)fd
- (void)OF_addObjectForReading: (id)object
{
	struct kevent event;

	if ([_changeList count] >= INT_MAX)
		@throw [OFOutOfRangeException exception];

	memset(&event, 0, sizeof(event));
	event.ident = [object fileDescriptorForReading];
	event.filter = EVFILT_READ;
	event.flags = EV_ADD;
#ifndef __NetBSD__
	event.udata = object;
#else
	event.udata = (intptr_t)object;
#endif
	EV_SET(&event, fd, EVFILT_READ, EV_ADD, 0, 0, 0);

	[_changeList addItem: &event];
}

- (void)OF_addFileDescriptorForWriting: (int)fd
- (void)OF_addObjectForWriting: (id)object
{
	struct kevent event;

	if ([_changeList count] >= INT_MAX)
		@throw [OFOutOfRangeException exception];

	memset(&event, 0, sizeof(event));
	event.ident = [object fileDescriptorForWriting];
	event.filter = EVFILT_WRITE;
	event.flags = EV_ADD;
#ifndef __NetBSD__
	event.udata = object;
#else
	event.udata = (intptr_t)object;
#endif
	EV_SET(&event, fd, EVFILT_WRITE, EV_ADD, 0, 0, 0);

	[_changeList addItem: &event];
}

- (void)OF_removeFileDescriptorForReading: (int)fd
- (void)OF_removeObjectForReading: (id)object
{
	struct kevent event;

	memset(&event, 0, sizeof(event));
	event.ident = [object fileDescriptorForReading];
	EV_SET(&event, fd, EVFILT_READ, EV_DELETE, 0, 0, 0);
	event.filter = EVFILT_READ;
	event.flags = EV_DELETE;
	[_changeList addItem: &event];
}

- (void)OF_removeFileDescriptorForWriting: (int)fd
- (void)OF_removeObjectForWriting: (id)object
{
	struct kevent event;

	memset(&event, 0, sizeof(event));
	event.ident = [object fileDescriptorForWriting];
	EV_SET(&event, fd, EVFILT_WRITE, EV_DELETE, 0, 0, 0);
	event.filter = EVFILT_WRITE;
	event.flags = EV_DELETE;
	[_changeList addItem: &event];
}

- (bool)observeForTimeInterval: (of_time_interval_t)timeInterval
{
	void *pool = objc_autoreleasePoolPush();
	struct timespec timeout;
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		pool = objc_autoreleasePoolPush();

		switch (eventList[i].filter) {
		case EVFILT_READ:
			if ([_delegate respondsToSelector:
			    @selector(objectIsReadyForReading:)])
				[_delegate objectIsReadyForReading:
				    _FDToObject[eventList[i].ident]];
				    (id)eventList[i].udata];
			break;
		case EVFILT_WRITE:
			if ([_delegate respondsToSelector:
			    @selector(objectIsReadyForWriting:)])
				[_delegate objectIsReadyForWriting:
				    _FDToObject[eventList[i].ident]];
				    (id)eventList[i].udata];
			break;
		default:
			assert(0);
		}

		objc_autoreleasePoolPop(pool);