ObjFW  Check-in [c279948fb8]

Overview
Comment:Nicer OFStreamObserver API.
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SHA3-256: c279948fb8f7147f3a2530a342de4dbb05d64f63aef2ed2d0a3729b29520f96e
User & Date: js on 2011-09-19 12:44:09
Other Links: manifest | tags
Context
2011-09-19
13:07
Rename -[bindToPort:onHost:] to -[bindToHost:port:].
This way it's consistent with -[connectToHost:port]. check-in: b8517c63ca user: js tags: trunk
12:44
Nicer OFStreamObserver API. check-in: c279948fb8 user: js tags: trunk
12:34
BOOL naming conventions. check-in: d43eb177bc user: js tags: trunk
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Modified src/OFStreamObserver.h from [d581b21593] to [753eef6385].

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@optional
#endif
/**
 * \brief This callback is called when a stream did get ready for reading.
 *
 * \param stream The stream which did become ready for reading
 */
- (void)streamDidBecomeReadyForReading: (OFStream*)stream;

/**
 * \brief This callback is called when a stream did get ready for writing.
 *
 * \param stream The stream which did become ready for writing
 */
- (void)streamDidBecomeReadyForWriting: (OFStream*)stream;

/**
 * \brief This callback is called when an exception occurred on the stream.
 *
 * \param stream The stream on which an exception occurred
 */
- (void)streamDidReceiveException: (OFStream*)stream;








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@optional
#endif
/**
 * \brief This callback is called when a stream did get ready for reading.
 *
 * \param stream The stream which did become ready for reading
 */
- (void)streamIsReadyForReading: (OFStream*)stream;

/**
 * \brief This callback is called when a stream did get ready for writing.
 *
 * \param stream The stream which did become ready for writing
 */
- (void)streamIsReadyForWriting: (OFStream*)stream;

/**
 * \brief This callback is called when an exception occurred on the stream.
 *
 * \param stream The stream on which an exception occurred
 */
- (void)streamDidReceiveException: (OFStream*)stream;
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 * It is recommended that the stream you add is set to non-blocking mode.
 *
 * If there is an -[observe] call blocking, it will be canceled. The reason for
 * this is to prevent blocking even though the new added stream is ready.
 *
 * \param stream The stream to observe for reading
 */
- (void)addStreamToObserveForReading: (OFStream*)stream;

/**
 * \brief Adds a stream to observe for writing.
 *
 * It is recommended that the stream you add is set to non-blocking mode.
 *
 * If there is an -[observe] call blocking, it will be canceled. The reason for
 * this is to prevent blocking even though the new added stream is ready.
 *
 * \param stream The stream to observe for writing
 */
- (void)addStreamToObserveForWriting: (OFStream*)stream;

/**
 * \brief Removes a stream to observe for reading.
 *
 * If there is an -[observe] call blocking, it will be canceled. The reason for
 * this is to prevent the removed stream from still being observed.
 *
 * \param stream The stream to remove from observing for reading
 */
- (void)removeStreamToObserveForReading: (OFStream*)stream;

/**
 * \brief Removes a stream to observe for writing.
 *
 * If there is an -[observe] call blocking, it will be canceled. The reason for
 * this is to prevent the removed stream from still being observed.
 *
 * \param stream The stream to remove from observing for writing
 */
- (void)removeStreamToObserveForWriting: (OFStream*)stream;

/**
 * \brief Observes all streams and blocks until an event happens on a stream.
 */
- (void)observe;

/**








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 * It is recommended that the stream you add is set to non-blocking mode.
 *
 * If there is an -[observe] call blocking, it will be canceled. The reason for
 * this is to prevent blocking even though the new added stream is ready.
 *
 * \param stream The stream to observe for reading
 */
- (void)addStreamForReading: (OFStream*)stream;

/**
 * \brief Adds a stream to observe for writing.
 *
 * It is recommended that the stream you add is set to non-blocking mode.
 *
 * If there is an -[observe] call blocking, it will be canceled. The reason for
 * this is to prevent blocking even though the new added stream is ready.
 *
 * \param stream The stream to observe for writing
 */
- (void)addStreamForWriting: (OFStream*)stream;

/**
 * \brief Removes a stream to observe for reading.
 *
 * If there is an -[observe] call blocking, it will be canceled. The reason for
 * this is to prevent the removed stream from still being observed.
 *
 * \param stream The stream to remove from observing for reading
 */
- (void)removeStreamForReading: (OFStream*)stream;

/**
 * \brief Removes a stream to observe for writing.
 *
 * If there is an -[observe] call blocking, it will be canceled. The reason for
 * this is to prevent the removed stream from still being observed.
 *
 * \param stream The stream to remove from observing for writing
 */
- (void)removeStreamForWriting: (OFStream*)stream;

/**
 * \brief Observes all streams and blocks until an event happens on a stream.
 */
- (void)observe;

/**
︙︙

Modified src/OFStreamObserver.m from [547cd504c0] to [26a8940bc6].

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}

- (void)setDelegate: (id <OFStreamObserverDelegate>)delegate_
{
	OF_SETTER(delegate, delegate_, YES, NO)
}

- (void)addStreamToObserveForReading: (OFStream*)stream
{
	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
	OFNumber *qi = [OFNumber numberWithInt: QUEUE_ADD | QUEUE_READ];

	@synchronized (queue) {
		[queue addObject: stream];
		[queueInfo addObject: qi];
	}

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

	[pool release];
}

- (void)addStreamToObserveForWriting: (OFStream*)stream
{
	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
	OFNumber *qi = [OFNumber numberWithInt: QUEUE_ADD | QUEUE_WRITE];

	@synchronized (queue) {
		[queue addObject: stream];
		[queueInfo addObject: qi];
	}

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

	[pool release];
}

- (void)removeStreamToObserveForReading: (OFStream*)stream
{
	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
	OFNumber *qi = [OFNumber numberWithInt: QUEUE_REMOVE | QUEUE_READ];

	@synchronized (queue) {
		[queue addObject: stream];
		[queueInfo addObject: qi];
	}

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

	[pool release];
}

- (void)removeStreamToObserveForWriting: (OFStream*)stream
{
	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
	OFNumber *qi = [OFNumber numberWithInt: QUEUE_REMOVE | QUEUE_WRITE];

	@synchronized (queue) {
		[queue addObject: stream];
		[queueInfo addObject: qi];
	}

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

	[pool release];
}

- (void)_addStreamToObserveForReading: (OFStream*)strea;






{
	@throw [OFNotImplementedException newWithClass: isa
					      selector: _cmd];
}

- (void)_addStreamToObserveForWriting: (OFStream*)stream
{
	@throw [OFNotImplementedException newWithClass: isa
					      selector: _cmd];
}

- (void)_removeStreamToObserveForReading: (OFStream*)stream
{
	@throw [OFNotImplementedException newWithClass: isa
					      selector: _cmd];
}

- (void)_removeStreamToObserveForWriting: (OFStream*)stream
{
	@throw [OFNotImplementedException newWithClass: isa
					      selector: _cmd];
}

- (void)_processQueue
{








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}

- (void)setDelegate: (id <OFStreamObserverDelegate>)delegate_
{
	OF_SETTER(delegate, delegate_, YES, NO)
}

- (void)addStreamForReading: (OFStream*)stream
{
	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
	OFNumber *qi = [OFNumber numberWithInt: QUEUE_ADD | QUEUE_READ];

	@synchronized (queue) {
		[queue addObject: stream];
		[queueInfo addObject: qi];
	}

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

	[pool release];
}

- (void)addStreamForWriting: (OFStream*)stream
{
	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
	OFNumber *qi = [OFNumber numberWithInt: QUEUE_ADD | QUEUE_WRITE];

	@synchronized (queue) {
		[queue addObject: stream];
		[queueInfo addObject: qi];
	}

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

	[pool release];
}

- (void)removeStreamForReading: (OFStream*)stream
{
	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
	OFNumber *qi = [OFNumber numberWithInt: QUEUE_REMOVE | QUEUE_READ];

	@synchronized (queue) {
		[queue addObject: stream];
		[queueInfo addObject: qi];
	}

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

	[pool release];
}

- (void)removeStreamForWriting: (OFStream*)stream
{
	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
	OFNumber *qi = [OFNumber numberWithInt: QUEUE_REMOVE | QUEUE_WRITE];

	@synchronized (queue) {
		[queue addObject: stream];
		[queueInfo addObject: qi];
	}

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

	[pool release];
}

- (void)_addStreamForReading: (OFStream*)strea;
{
	@throw [OFNotImplementedException newWithClass: isa
					      selector: _cmd];
}

- (void)_addStreamForWriting: (OFStream*)stream
{
	@throw [OFNotImplementedException newWithClass: isa
					      selector: _cmd];
}

- (void)_removeStreamForReading: (OFStream*)stream
{
	@throw [OFNotImplementedException newWithClass: isa
					      selector: _cmd];
}







- (void)_removeStreamForWriting: (OFStream*)stream
{
	@throw [OFNotImplementedException newWithClass: isa
					      selector: _cmd];
}

- (void)_processQueue
{
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				FDToStream[fd] = nil;
			}

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

				[self _addStreamToObserveForReading:
				    queueCArray[i]];

				break;
			case QUEUE_ADD | QUEUE_WRITE:
				[writeStreams addObject: queueCArray[i]];

				[self _addStreamToObserveForWriting:
				    queueCArray[i]];

				break;
			case QUEUE_REMOVE | QUEUE_READ:
				[readStreams removeObjectIdenticalTo:
				    queueCArray[i]];

				[self _removeStreamToObserveForReading:
				    queueCArray[i]];

				break;
			case QUEUE_REMOVE | QUEUE_WRITE:
				[writeStreams removeObjectIdenticalTo:
				    queueCArray[i]];

				[self _removeStreamToObserveForWriting:
				    queueCArray[i]];

				break;
			default:
				assert(0);
			}
		}









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				FDToStream[fd] = nil;
			}

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


				[self _addStreamForReading: queueCArray[i]];

				break;
			case QUEUE_ADD | QUEUE_WRITE:
				[writeStreams addObject: queueCArray[i]];


				[self _addStreamForWriting: queueCArray[i]];

				break;
			case QUEUE_REMOVE | QUEUE_READ:
				[readStreams removeObjectIdenticalTo:
				    queueCArray[i]];


				[self _removeStreamForReading: queueCArray[i]];

				break;
			case QUEUE_REMOVE | QUEUE_WRITE:
				[writeStreams removeObjectIdenticalTo:
				    queueCArray[i]];


				[self _removeStreamForWriting: queueCArray[i]];

				break;
			default:
				assert(0);
			}
		}
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	size_t i, count = [readStreams count];
	BOOL foundInCache = NO;

	pool = [[OFAutoreleasePool alloc] init];

	for (i = 0; i < count; i++) {
		if ([cArray[i] pendingBytes] > 0) {
			[delegate streamDidBecomeReadyForReading: cArray[i]];
			foundInCache = YES;
			[pool releaseObjects];
		}
	}

	[pool release];

	/*
	 * As long as we have data in the cache for any stream, we don't want
	 * to block.
	 */
	if (foundInCache)
		return YES;

	return NO;
}
@end

@implementation OFObject (OFStreamObserverDelegate)
- (void)streamDidBecomeReadyForReading: (OFStream*)stream
{
}

- (void)streamDidBecomeReadyForWriting: (OFStream*)stream
{
}

- (void)streamDidReceiveException: (OFStream*)stream
{
}
@end








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	size_t i, count = [readStreams count];
	BOOL foundInCache = NO;

	pool = [[OFAutoreleasePool alloc] init];

	for (i = 0; i < count; i++) {
		if ([cArray[i] pendingBytes] > 0) {
			[delegate streamIsReadyForReading: cArray[i]];
			foundInCache = YES;
			[pool releaseObjects];
		}
	}

	[pool release];

	/*
	 * As long as we have data in the cache for any stream, we don't want
	 * to block.
	 */
	if (foundInCache)
		return YES;

	return NO;
}
@end

@implementation OFObject (OFStreamObserverDelegate)
- (void)streamIsReadyForReading: (OFStream*)stream
{
}

- (void)streamIsReadyForWriting: (OFStream*)stream
{
}

- (void)streamDidReceiveException: (OFStream*)stream
{
}
@end

Modified src/OFStreamObserver_poll.m from [103d3eeb79] to [8b9acbd834].

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				[FDs removeItemAtIndex: i];

			break;
		}
	}
}

- (void)_addStreamToObserveForReading: (OFStream*)stream
{
	[self _addStream: stream
	      withEvents: POLLIN];
}

- (void)_addStreamToObserveForWriting: (OFStream*)stream
{
	[self _addStream: stream
	      withEvents: POLLOUT];
}

- (void)_removeStreamToObserveForReading: (OFStream*)stream
{
	[self _removeStream: stream
		 withEvents: POLLIN];
}

- (void)_removeStreamToObserveForWriting: (OFStream*)stream
{
	[self _removeStream: stream
		 withEvents: POLLOUT];
}

- (BOOL)observeWithTimeout: (int)timeout
{








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				[FDs removeItemAtIndex: i];

			break;
		}
	}
}

- (void)_addStreamForReading: (OFStream*)stream
{
	[self _addStream: stream
	      withEvents: POLLIN];
}

- (void)_addStreamForWriting: (OFStream*)stream
{
	[self _addStream: stream
	      withEvents: POLLOUT];
}

- (void)_removeStreamForReading: (OFStream*)stream
{
	[self _removeStream: stream
		 withEvents: POLLIN];
}

- (void)_removeStreamForWriting: (OFStream*)stream
{
	[self _removeStream: stream
		 withEvents: POLLOUT];
}

- (BOOL)observeWithTimeout: (int)timeout
{
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				assert(read(cancelFD[0], &buffer, 1) > 0);
				FDsCArray[i].revents = 0;

				continue;
			}

			[delegate streamDidBecomeReadyForReading:
			    FDToStream[FDsCArray[i].fd]];
			[pool releaseObjects];
		}

		if (FDsCArray[i].revents & POLLOUT) {
			[delegate streamDidBecomeReadyForReading:
			    FDToStream[FDsCArray[i].fd]];
			[pool releaseObjects];
		}

		if (FDsCArray[i].revents & POLLERR) {
			[delegate streamDidReceiveException:
			    FDToStream[FDsCArray[i].fd]];








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				assert(read(cancelFD[0], &buffer, 1) > 0);
				FDsCArray[i].revents = 0;

				continue;
			}

			[delegate streamIsReadyForReading:
			    FDToStream[FDsCArray[i].fd]];
			[pool releaseObjects];
		}

		if (FDsCArray[i].revents & POLLOUT) {
			[delegate streamIsReadyForReading:
			    FDToStream[FDsCArray[i].fd]];
			[pool releaseObjects];
		}

		if (FDsCArray[i].revents & POLLERR) {
			[delegate streamDidReceiveException:
			    FDToStream[FDsCArray[i].fd]];
︙︙

Modified src/OFStreamObserver_select.m from [e296c3f2eb] to [ab1097e618].

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	FD_ZERO(&writeFDs);

	FD_SET(cancelFD[0], &readFDs);

	return self;
}

- (void)_addStreamToObserveForReading: (OFStream*)stream
{
	int fd = [stream fileDescriptor];

	FD_SET(fd, &readFDs);
	FD_SET(fd, &exceptFDs);
}

- (void)_addStreamToObserveForWriting: (OFStream*)stream
{
	int fd = [stream fileDescriptor];

	FD_SET(fd, &writeFDs);
	FD_SET(fd, &exceptFDs);
}

- (void)_removeStreamToObserveForReading: (OFStream*)stream
{
	int fd = [stream fileDescriptor];

	FD_CLR(fd, &readFDs);

	if (!FD_ISSET(fd, &writeFDs))
		FD_CLR(fd, &exceptFDs);
}

- (void)_removeStreamToObserveForWriting: (OFStream*)stream
{
	int fd = [stream fileDescriptor];

	FD_CLR(fd, &writeFDs);

	if (!FD_ISSET(fd, &readFDs))
		FD_CLR(fd, &exceptFDs);








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	FD_ZERO(&writeFDs);

	FD_SET(cancelFD[0], &readFDs);

	return self;
}

- (void)_addStreamForReading: (OFStream*)stream
{
	int fd = [stream fileDescriptor];

	FD_SET(fd, &readFDs);
	FD_SET(fd, &exceptFDs);
}

- (void)_addStreamForWriting: (OFStream*)stream
{
	int fd = [stream fileDescriptor];

	FD_SET(fd, &writeFDs);
	FD_SET(fd, &exceptFDs);
}

- (void)_removeStreamForReading: (OFStream*)stream
{
	int fd = [stream fileDescriptor];

	FD_CLR(fd, &readFDs);

	if (!FD_ISSET(fd, &writeFDs))
		FD_CLR(fd, &exceptFDs);
}

- (void)_removeStreamForWriting: (OFStream*)stream
{
	int fd = [stream fileDescriptor];

	FD_CLR(fd, &writeFDs);

	if (!FD_ISSET(fd, &readFDs))
		FD_CLR(fd, &exceptFDs);
︙︙
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	cArray = [readStreams cArray];
	count = [readStreams count];

	for (i = 0; i < count; i++) {
		int fileDescriptor = [cArray[i] fileDescriptor];

		if (FD_ISSET(fileDescriptor, &readFDs_)) {
			[delegate streamDidBecomeReadyForReading: cArray[i]];
			[pool releaseObjects];
		}

		if (FD_ISSET(fileDescriptor, &exceptFDs_)) {
			[delegate streamDidReceiveException: cArray[i]];
			[pool releaseObjects];









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	cArray = [readStreams cArray];
	count = [readStreams count];

	for (i = 0; i < count; i++) {
		int fileDescriptor = [cArray[i] fileDescriptor];

		if (FD_ISSET(fileDescriptor, &readFDs_)) {
			[delegate streamIsReadyForReading: cArray[i]];
			[pool releaseObjects];
		}

		if (FD_ISSET(fileDescriptor, &exceptFDs_)) {
			[delegate streamDidReceiveException: cArray[i]];
			[pool releaseObjects];
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	cArray = [writeStreams cArray];
	count = [writeStreams count];

	for (i = 0; i < count; i++) {
		int fileDescriptor = [cArray[i] fileDescriptor];

		if (FD_ISSET(fileDescriptor, &writeFDs_)) {
			[delegate streamDidBecomeReadyForWriting: cArray[i]];
			[pool releaseObjects];
		}

		if (FD_ISSET(fileDescriptor, &exceptFDs_)) {
			[delegate streamDidReceiveException: cArray[i]];
			[pool releaseObjects];
		}








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	cArray = [writeStreams cArray];
	count = [writeStreams count];

	for (i = 0; i < count; i++) {
		int fileDescriptor = [cArray[i] fileDescriptor];

		if (FD_ISSET(fileDescriptor, &writeFDs_)) {
			[delegate streamIsReadyForWriting: cArray[i]];
			[pool releaseObjects];
		}

		if (FD_ISSET(fileDescriptor, &exceptFDs_)) {
			[delegate streamDidReceiveException: cArray[i]];
			[pool releaseObjects];
		}
︙︙

Fossil 2.23 [47362306a7] 2023-11-01 18:56:47
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