ObjFW  Diff

	QUEUE_REMOVE = 1,
	QUEUE_READ = 0,
	QUEUE_WRITE = 2
};
#define QUEUE_ACTION (QUEUE_ADD | QUEUE_REMOVE)

@implementation OFKernelEventObserver
+ (void)initialize
{
	if (self != [OFKernelEventObserver class])
		return;

	if (!of_init_sockets())
		@throw [OFInitializationFailedException
		    exceptionWithClass: self];
}

+ (instancetype)observer
{
	return [[[self alloc] init] autorelease];
}

#if defined(HAVE_KQUEUE)
+ alloc

		_queueFDs = [[OFDataArray alloc] initWithItemSize: sizeof(int)];

#ifdef OF_HAVE_PIPE
		if (pipe(_cancelFD))
			@throw [OFInitializationFailedException
			    exceptionWithClass: [self class]];
#else
		/* Make sure network has been initialized */
		[OFStreamSocket class];

		_cancelFD[0] = socket(AF_INET, SOCK_DGRAM, 0);
		_cancelFD[1] = socket(AF_INET, SOCK_DGRAM, 0);

		if (_cancelFD[0] == INVALID_SOCKET ||
		    _cancelFD[1] == INVALID_SOCKET)
			@throw [OFInitializationFailedException
			    exceptionWithClass: [self class]];