ObjFW  Diff

	@try {
#ifdef _WIN32
		struct sockaddr_in cancelAddr2;
		socklen_t cancelAddrLen;
#endif

		readStreams = [[OFMutableArray alloc] init];
		writeStreams = [[OFMutableArray alloc] init];
		queue = [[OFMutableArray alloc] init];
		queueInfo = [[OFDataArray alloc] initWithItemSize: sizeof(int)];

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

#ifndef _WIN32
		if (pipe(cancelFD))
			@throw [OFInitializationFailedException
			    exceptionWithClass: [self class]];
#else
		/* Make sure WSAStartup has been called */
		[OFTCPSocket 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]];

		cancelAddr.sin_family = AF_INET;
		cancelAddr.sin_port = 0;
		cancelAddr.sin_addr.s_addr = inet_addr("127.0.0.1");
		cancelAddr2 = cancelAddr;

		if (bind(cancelFD[0], (struct sockaddr*)&cancelAddr,
		    sizeof(cancelAddr)) || bind(cancelFD[1],
		    (struct sockaddr*)&cancelAddr2, sizeof(cancelAddr2)))
			@throw [OFInitializationFailedException
			    exceptionWithClass: [self class]];

		cancelAddrLen = sizeof(cancelAddr);

		if (getsockname(cancelFD[0], (struct sockaddr*)&cancelAddr,
		    &cancelAddrLen))
			@throw [OFInitializationFailedException
			    exceptionWithClass: [self class]];
#endif

		maxFD = cancelFD[0];
		FDToStream = [self allocMemoryWithSize: sizeof(OFStream*)
						 count: maxFD + 1];
		FDToStream[cancelFD[0]] = nil;

#ifdef OF_HAVE_THREADS
		mutex = [[OFMutex alloc] init];
#endif
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- (void)dealloc
{
	close(cancelFD[0]);
	close(cancelFD[1]);

	[readStreams release];
	[writeStreams release];
	[queue release];
	[queueInfo release];
	[queueFDs release];
#ifdef OF_HAVE_THREADS
	[mutex release];
#endif

	[super dealloc];
}

- (id <OFStreamObserverDelegate>)delegate
{
	return delegate;
}

- (void)setDelegate: (id <OFStreamObserverDelegate>)delegate_
{
	delegate = delegate_;
}

- (void)addStreamForReading: (OFStream*)stream
{
#ifdef OF_HAVE_THREADS
	[mutex lock];
#endif
	@try {
		int qi = QUEUE_ADD | QUEUE_READ;
		int fd = [stream fileDescriptorForReading];

		[queue addObject: stream];
		[queueInfo addItem: &qi];
		[queueFDs addItem: &fd];
	} @finally {
#ifdef OF_HAVE_THREADS
		[mutex unlock];
#endif
	}

	[self cancel];
}

- (void)addStreamForWriting: (OFStream*)stream
{
#ifdef OF_HAVE_THREADS
	[mutex lock];
#endif
	@try {
		int qi = QUEUE_ADD | QUEUE_WRITE;
		int fd = [stream fileDescriptorForWriting];

		[queue addObject: stream];
		[queueInfo addItem: &qi];
		[queueFDs addItem: &fd];
	} @finally {
#ifdef OF_HAVE_THREADS
		[mutex unlock];
#endif
	}

	[self cancel];
}

- (void)removeStreamForReading: (OFStream*)stream
{
#ifdef OF_HAVE_THREADS
	[mutex lock];
#endif
	@try {
		int qi = QUEUE_REMOVE | QUEUE_READ;
		int fd = [stream fileDescriptorForReading];

		[queue addObject: stream];
		[queueInfo addItem: &qi];
		[queueFDs addItem: &fd];
	} @finally {
#ifdef OF_HAVE_THREADS
		[mutex unlock];
#endif
	}

#ifndef _WIN32
	OF_ENSURE(write(cancelFD[1], "", 1) > 0);
#else
	OF_ENSURE(sendto(cancelFD[1], "", 1, 0, (struct sockaddr*)&cancelAddr,
	    sizeof(cancelAddr)) > 0);
#endif
}

- (void)removeStreamForWriting: (OFStream*)stream
{
#ifdef OF_HAVE_THREADS
	[mutex lock];
#endif
	@try {
		int qi = QUEUE_REMOVE | QUEUE_WRITE;
		int fd = [stream fileDescriptorForWriting];

		[queue addObject: stream];
		[queueInfo addItem: &qi];
		[queueFDs addItem: &fd];
	} @finally {
#ifdef OF_HAVE_THREADS
		[mutex unlock];
#endif
	}

#ifndef _WIN32
	OF_ENSURE(write(cancelFD[1], "", 1) > 0);
#else
	OF_ENSURE(sendto(cancelFD[1], "", 1, 0, (struct sockaddr*)&cancelAddr,
	    sizeof(cancelAddr)) > 0);
#endif
}

- (void)OF_addFileDescriptorForReading: (int)fd
{
	[self doesNotRecognizeSelector: _cmd];
	abort();
}

	[self doesNotRecognizeSelector: _cmd];
	abort();
}

- (void)OF_processQueue
{
#ifdef OF_HAVE_THREADS
	[mutex lock];
#endif
	@try {
		OFStream **queueObjects = [queue objects];
		int *queueInfoItems = [queueInfo items];
		int *queueFDsItems = [queueFDs items];
		size_t i, count = [queue count];

		for (i = 0; i < count; i++) {
			OFStream *stream = queueObjects[i];
			int action = queueInfoItems[i];
			int fd = queueFDsItems[i];

			if ((action & QUEUE_ACTION) == QUEUE_ADD) {
				if (fd > maxFD) {
					maxFD = fd;
					FDToStream = [self
					    resizeMemory: FDToStream
						    size: sizeof(OFStream*)
						   count: maxFD + 1];
				}

				FDToStream[fd] = stream;
			}

			if ((action & QUEUE_ACTION) == QUEUE_REMOVE) {
				/* FIXME: Maybe downsize? */
				FDToStream[fd] = nil;
			}

			switch (action) {
			case QUEUE_ADD | QUEUE_READ:
				[readStreams addObject: stream];

				[self OF_addFileDescriptorForReading: fd];

				break;
			case QUEUE_ADD | QUEUE_WRITE:
				[writeStreams addObject: stream];

				[self OF_addFileDescriptorForWriting: fd];

				break;
			case QUEUE_REMOVE | QUEUE_READ:
				[readStreams removeObjectIdenticalTo: stream];

				[self OF_removeFileDescriptorForReading: fd];

				break;
			case QUEUE_REMOVE | QUEUE_WRITE:
				[writeStreams removeObjectIdenticalTo: stream];

				[self OF_removeFileDescriptorForWriting: fd];

				break;
			default:
				assert(0);
			}
		}

		[queue removeAllObjects];
		[queueInfo removeAllItems];
		[queueFDs removeAllItems];
	} @finally {
#ifdef OF_HAVE_THREADS
		[mutex unlock];
#endif
	}
}

- (void)observe
{
	[self observeWithTimeout: -1];
}

- (BOOL)observeWithTimeout: (double)timeout
{
	[self doesNotRecognizeSelector: _cmd];
	abort();
}

- (void)cancel
{
#ifndef _WIN32
	OF_ENSURE(write(cancelFD[1], "", 1) > 0);
#else
	OF_ENSURE(sendto(cancelFD[1], "", 1, 0, (struct sockaddr*)&cancelAddr,
	    sizeof(cancelAddr)) > 0);
#endif
}

- (BOOL)OF_processCache
{
	OFStream **objects = [readStreams objects];
	size_t i, count = [readStreams count];
	BOOL foundInCache = NO;


	for (i = 0; i < count; i++) {
		if ([objects[i] pendingBytes] > 0 &&
		    ![objects[i] OF_isWaitingForDelimiter]) {
			void *pool = objc_autoreleasePoolPush();

			if ([delegate respondsToSelector:
			    @selector(streamIsReadyForReading:)])
				[delegate streamIsReadyForReading: objects[i]];

			foundInCache = YES;

			objc_autoreleasePoolPop(pool);
		}
	}