ObjFW  Check-in [6ae356af85]

Overview
Comment:OFRunLoop: Refactor read queue handling
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SHA3-256: 6ae356af850c45d401e9caf8a6cff6ca3170f886ffe898f6771b427426a4087e
User & Date: js on 2017-02-04 21:37:44
Other Links: manifest | tags
Context
2017-02-05
01:31
Add KOI8-R encoding check-in: 59348cd51d user: js tags: trunk
2017-02-04
21:37
OFRunLoop: Refactor read queue handling check-in: 6ae356af85 user: js tags: trunk
18:33
objfw-config: Include -Wl,-U,_* flag in LDFLAGS check-in: 797d6f58f0 user: js tags: trunk
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Modified src/OFRunLoop.m from [bedf74278b] to [af29aae29a].

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#ifdef OF_HAVE_SOCKETS
@interface OFRunLoop_QueueItem: OFObject
{
@public
	id _target;
	SEL _selector;
}


@end

@interface OFRunLoop_ReadQueueItem: OFRunLoop_QueueItem
{
@public
# ifdef OF_HAVE_BLOCKS
	of_stream_async_read_block_t _block;








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#ifdef OF_HAVE_SOCKETS
@interface OFRunLoop_QueueItem: OFObject
{
@public
	id _target;
	SEL _selector;
}

- (bool)handleForObject: (id)object;
@end

@interface OFRunLoop_ReadQueueItem: OFRunLoop_QueueItem
{
@public
# ifdef OF_HAVE_BLOCKS
	of_stream_async_read_block_t _block;
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# endif
	void *_buffer;
	size_t _length;
}
@end

@implementation OFRunLoop_QueueItem





- (void)dealloc
{
	[_target release];

	[super dealloc];
}
@end

@implementation OFRunLoop_ReadQueueItem





























# ifdef OF_HAVE_BLOCKS
- (void)dealloc
{
	[_block release];

	[super dealloc];
}
# endif
@end

@implementation OFRunLoop_ExactReadQueueItem











































# ifdef OF_HAVE_BLOCKS
- (void)dealloc
{
	[_block release];

	[super dealloc];
}
# endif
@end

@implementation OFRunLoop_ReadLineQueueItem






























# ifdef OF_HAVE_BLOCKS
- (void)dealloc
{
	[_block release];

	[super dealloc];
}
# endif
@end

@implementation OFRunLoop_AcceptQueueItem




























# ifdef OF_HAVE_BLOCKS
- (void)dealloc
{
	[_block release];

	[super dealloc];
}
# endif
@end

@implementation OFRunLoop_UDPReceiveQueueItem

































# ifdef OF_HAVE_BLOCKS
- (void)dealloc
{
	[_block release];

	[super dealloc];
}








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# endif
	void *_buffer;
	size_t _length;
}
@end

@implementation OFRunLoop_QueueItem
- (bool)handleForObject: (id)object
{
	OF_UNRECOGNIZED_SELECTOR
}

- (void)dealloc
{
	[_target release];

	[super dealloc];
}
@end

@implementation OFRunLoop_ReadQueueItem
- (bool)handleForObject: (id)object
{
	size_t length;
	OFException *exception = nil;

	@try {
		length = [object readIntoBuffer: _buffer
					 length: _length];
	} @catch (OFException *e) {
		length = 0;
		exception = e;
	}

# ifdef OF_HAVE_BLOCKS
	if (_block != NULL)
		return _block(object, _buffer, length, exception);
	else {
# endif
		bool (*func)(id, SEL, OFStream*, void*, size_t, OFException*) =
		    (bool(*)(id, SEL, OFStream*, void*, size_t, OFException*))
		    [_target methodForSelector: _selector];

		return func(_target, _selector, object, _buffer, length,
		    exception);
# ifdef OF_HAVE_BLOCKS
	}
# endif
}

# ifdef OF_HAVE_BLOCKS
- (void)dealloc
{
	[_block release];

	[super dealloc];
}
# endif
@end

@implementation OFRunLoop_ExactReadQueueItem
- (bool)handleForObject: (id)object
{
	size_t length;
	OFException *exception = nil;

	@try {
		length = [object readIntoBuffer: (char*)_buffer + _readLength
					 length: _exactLength - _readLength];
	} @catch (OFException *e) {
		length = 0;
		exception = e;
	}

	_readLength += length;

	if (_readLength != _exactLength && ![object isAtEndOfStream] &&
	    exception == nil)
		return true;

# ifdef OF_HAVE_BLOCKS
	if (_block != NULL) {
		if (!_block(object, _buffer, _readLength, exception))
			return false;

		_readLength = 0;
		return true;
	} else {
# endif
		bool (*func)(id, SEL, OFStream*, void*, size_t, OFException*) =
		    (bool(*)(id, SEL, OFStream*, void*, size_t, OFException*))
		    [_target methodForSelector: _selector];

		if (!func(_target, _selector, object, _buffer, _readLength,
		    exception))
			return false;

		_readLength = 0;
		return true;
# ifdef OF_HAVE_BLOCKS
	}
# endif
}

# ifdef OF_HAVE_BLOCKS
- (void)dealloc
{
	[_block release];

	[super dealloc];
}
# endif
@end

@implementation OFRunLoop_ReadLineQueueItem
- (bool)handleForObject: (id)object
{
	OFString *line;
	OFException *exception = nil;

	@try {
		line = [object tryReadLineWithEncoding: _encoding];
	} @catch (OFException *e) {
		line = nil;
		exception = e;
	}

	if (line == nil && ![object isAtEndOfStream] && exception == nil)
		return true;

# ifdef OF_HAVE_BLOCKS
	if (_block != NULL)
		return _block(object, line, exception);
	else {
# endif
		bool (*func)(id, SEL, OFStream*, OFString*, OFException*) =
		    (bool(*)(id, SEL, OFStream*, OFString*, OFException*))
		    [_target methodForSelector: _selector];

		return func(_target, _selector, object, line, exception);
# ifdef OF_HAVE_BLOCKS
	}
# endif
}

# ifdef OF_HAVE_BLOCKS
- (void)dealloc
{
	[_block release];

	[super dealloc];
}
# endif
@end

@implementation OFRunLoop_AcceptQueueItem
- (bool)handleForObject: (id)object
{
	OFTCPSocket *newSocket;
	OFException *exception = nil;

	@try {
		newSocket = [object accept];
	} @catch (OFException *e) {
		newSocket = nil;
		exception = e;
	}

# ifdef OF_HAVE_BLOCKS
	if (_block != NULL)
		return _block(object, newSocket, exception);
	else {
# endif
		bool (*func)(id, SEL, OFTCPSocket*, OFTCPSocket*,
		    OFException*) =
		    (bool(*)(id, SEL, OFTCPSocket*, OFTCPSocket*, OFException*))
		    [_target methodForSelector: _selector];

		return func(_target, _selector, object, newSocket, exception);
# ifdef OF_HAVE_BLOCKS
	}
# endif
}

# ifdef OF_HAVE_BLOCKS
- (void)dealloc
{
	[_block release];

	[super dealloc];
}
# endif
@end

@implementation OFRunLoop_UDPReceiveQueueItem
- (bool)handleForObject: (id)object
{
	size_t length;
	of_udp_socket_address_t address;
	OFException *exception = nil;

	@try {
		length = [object receiveIntoBuffer: _buffer
					    length: _length
					    sender: &address];
	} @catch (OFException *e) {
		length = 0;
		exception = e;
	}

# ifdef OF_HAVE_BLOCKS
	if (_block != NULL)
		return _block(object, _buffer, length, address, exception);
	else {
# endif
		bool (*func)(id, SEL, OFUDPSocket*, void*, size_t,
		    of_udp_socket_address_t address, OFException*) =
		    (bool(*)(id, SEL, OFUDPSocket*, void*, size_t,
		    of_udp_socket_address_t, OFException*))
		    [_target methodForSelector: _selector];

		return func(_target, _selector, object, _buffer, length,
		    address, exception);
# ifdef OF_HAVE_BLOCKS
	}
# endif
}

# ifdef OF_HAVE_BLOCKS
- (void)dealloc
{
	[_block release];

	[super dealloc];
}
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	void *pool = objc_autoreleasePoolPush();
	OFRunLoop *runLoop = [self currentRunLoop];
	OFList *queue;

	if ((queue = [runLoop->_readQueues objectForKey: object]) != nil) {
		assert([queue count] > 0);







		[runLoop->_kernelEventObserver removeObjectForReading: object];
		[runLoop->_readQueues removeObjectForKey: object];
	}

	objc_autoreleasePoolPop(pool);
}
#endif








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	void *pool = objc_autoreleasePoolPush();
	OFRunLoop *runLoop = [self currentRunLoop];
	OFList *queue;

	if ((queue = [runLoop->_readQueues objectForKey: object]) != nil) {
		assert([queue count] > 0);

		/*
		 * Clear the queue now, in case this has been called from a
		 * handler, as otherwise, we'd do the cleanups below twice.
		 */
		[queue removeAllObjects];

		[runLoop->_kernelEventObserver removeObjectForReading: object];
		[runLoop->_readQueues removeObjectForKey: object];
	}

	objc_autoreleasePoolPop(pool);
}
#endif
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	}
#endif
}

#ifdef OF_HAVE_SOCKETS
- (void)objectIsReadyForReading: (id)object
{





	OFList *queue = [_readQueues objectForKey: object];
	of_list_object_t *listObject;

	assert(queue != nil);



	listObject = [queue firstListObject];

	if ([listObject->object isKindOfClass:
	    [OFRunLoop_ReadQueueItem class]]) {
		OFRunLoop_ReadQueueItem *queueItem = listObject->object;
		size_t length;
		OFException *exception = nil;

		@try {
			length = [object readIntoBuffer: queueItem->_buffer
						 length: queueItem->_length];
		} @catch (OFException *e) {
			length = 0;
			exception = e;
		}

# ifdef OF_HAVE_BLOCKS
		if (queueItem->_block != NULL) {
			if (!queueItem->_block(object, queueItem->_buffer,
			    length, exception)) {
				[queue removeListObject: listObject];

				if ([queue count] == 0) {
					[_kernelEventObserver
					    removeObjectForReading: object];
					[_readQueues
					    removeObjectForKey: object];
				}
			}
		} else {
# endif
			bool (*func)(id, SEL, OFStream*, void*, size_t,
			    OFException*) = (bool(*)(id, SEL, OFStream*, void*,
			    size_t, OFException*))
			    [queueItem->_target methodForSelector:
			    queueItem->_selector];

			if (!func(queueItem->_target, queueItem->_selector,
			    object, queueItem->_buffer, length, exception)) {
				[queue removeListObject: listObject];

				if ([queue count] == 0) {
					[_kernelEventObserver
					    removeObjectForReading: object];
					[_readQueues
					    removeObjectForKey: object];
				}
			}
# ifdef OF_HAVE_BLOCKS
		}
# endif
	} else if ([listObject->object isKindOfClass:
	    [OFRunLoop_ExactReadQueueItem class]]) {
		OFRunLoop_ExactReadQueueItem *queueItem = listObject->object;
		size_t length;
		OFException *exception = nil;

		@try {
			length = [object
			    readIntoBuffer: (char*)queueItem->_buffer +
					    queueItem->_readLength
				    length: queueItem->_exactLength -
					    queueItem->_readLength];
		} @catch (OFException *e) {
			length = 0;
			exception = e;
		}

		queueItem->_readLength += length;
		if (queueItem->_readLength == queueItem->_exactLength ||
		    [object isAtEndOfStream] || exception != nil) {
# ifdef OF_HAVE_BLOCKS
			if (queueItem->_block != NULL) {
				if (queueItem->_block(object,
				    queueItem->_buffer, queueItem->_readLength,
				    exception))
					queueItem->_readLength = 0;
				else {
					[queue removeListObject: listObject];

					if ([queue count] == 0) {
						[_kernelEventObserver
						    removeObjectForReading:
						    object];
						[_readQueues
						    removeObjectForKey: object];
					}
				}
			} else {
# endif
				bool (*func)(id, SEL, OFStream*, void*,
				    size_t, OFException*) = (bool(*)(id, SEL,
				    OFStream*, void*, size_t, OFException*))
				    [queueItem->_target
				    methodForSelector: queueItem->_selector];

				if (func(queueItem->_target,
				    queueItem->_selector, object,
				    queueItem->_buffer, queueItem->_readLength,
				    exception))
					queueItem->_readLength = 0;
				else {
					[queue removeListObject: listObject];

					if ([queue count] == 0) {
						[_kernelEventObserver
						    removeObjectForReading:
						    object];
						[_readQueues
						    removeObjectForKey: object];
					}
				}
# ifdef OF_HAVE_BLOCKS
			}
# endif
		}
	} else if ([listObject->object isKindOfClass:
	    [OFRunLoop_ReadLineQueueItem class]]) {
		OFRunLoop_ReadLineQueueItem *queueItem = listObject->object;
		OFString *line;
		OFException *exception = nil;

		@try {
			line = [object
			    tryReadLineWithEncoding: queueItem->_encoding];
		} @catch (OFException *e) {
			line = nil;
			exception = e;
		}

		if (line != nil || [object isAtEndOfStream] ||
		    exception != nil) {
# ifdef OF_HAVE_BLOCKS
			if (queueItem->_block != NULL) {
				if (!queueItem->_block(object, line,
				    exception)) {
					[queue removeListObject: listObject];

					if ([queue count] == 0) {
						[_kernelEventObserver
						    removeObjectForReading:
						    object];
						[_readQueues
						    removeObjectForKey: object];
					}
				}
			} else {
# endif
				bool (*func)(id, SEL, OFStream*, OFString*,
				    OFException*) = (bool(*)(id, SEL, OFStream*,
				    OFString*, OFException*))
				    [queueItem->_target methodForSelector:
				    queueItem->_selector];

				if (!func(queueItem->_target,
				    queueItem->_selector, object, line,
				    exception)) {
					[queue removeListObject: listObject];

					if ([queue count] == 0) {
						[_kernelEventObserver
						    removeObjectForReading:
						    object];
						[_readQueues
						    removeObjectForKey: object];
					}
				}
# ifdef OF_HAVE_BLOCKS
			}
# endif
		}
	} else if ([listObject->object isKindOfClass:
	    [OFRunLoop_AcceptQueueItem class]]) {
		OFRunLoop_AcceptQueueItem *queueItem = listObject->object;
		OFTCPSocket *newSocket;
		OFException *exception = nil;

		@try {
			newSocket = [object accept];
		} @catch (OFException *e) {
			newSocket = nil;
			exception = e;
		}

# ifdef OF_HAVE_BLOCKS
		if (queueItem->_block != NULL) {
			if (!queueItem->_block(object, newSocket, exception)) {
				[queue removeListObject: listObject];

				if ([queue count] == 0) {
					[_kernelEventObserver
					    removeObjectForReading: object];
					[_readQueues
					    removeObjectForKey: object];
				}
			}
		} else {
# endif
			bool (*func)(id, SEL, OFTCPSocket*, OFTCPSocket*,
			    OFException*) =
			    (bool(*)(id, SEL, OFTCPSocket*, OFTCPSocket*,
			    OFException*))
			    [queueItem->_target methodForSelector:
			    queueItem->_selector];

			if (!func(queueItem->_target, queueItem->_selector,
			    object, newSocket, exception)) {
				[queue removeListObject: listObject];

				if ([queue count] == 0) {
					[_kernelEventObserver
					    removeObjectForReading: object];
					[_readQueues
					    removeObjectForKey: object];
				}
			}
# ifdef OF_HAVE_BLOCKS
		}
# endif
	} else if ([listObject->object isKindOfClass:
	    [OFRunLoop_UDPReceiveQueueItem class]]) {
		OFRunLoop_UDPReceiveQueueItem *queueItem = listObject->object;
		size_t length;
		of_udp_socket_address_t address;
		OFException *exception = nil;

		@try {
			length = [object receiveIntoBuffer: queueItem->_buffer
						    length: queueItem->_length
						    sender: &address];
		} @catch (OFException *e) {
			length = 0;
			exception = e;
		}

# ifdef OF_HAVE_BLOCKS
		if (queueItem->_block != NULL) {
			if (!queueItem->_block(object, queueItem->_buffer,
			    length, address, exception)) {
				[queue removeListObject: listObject];

				if ([queue count] == 0) {
					[_kernelEventObserver
					    removeObjectForReading: object];
					[_readQueues
					    removeObjectForKey: object];
				}
			}
		} else {
# endif
			bool (*func)(id, SEL, OFUDPSocket*, void*, size_t,
			    of_udp_socket_address_t address, OFException*) =
			    (bool(*)(id, SEL, OFUDPSocket*, void*, size_t,
			    of_udp_socket_address_t, OFException*))
			    [queueItem->_target methodForSelector:
			    queueItem->_selector];

			if (!func(queueItem->_target, queueItem->_selector,
			    object, queueItem->_buffer, length, address,
			    exception)) {
				[queue removeListObject: listObject];

				if ([queue count] == 0) {
					[_kernelEventObserver
					    removeObjectForReading: object];
					[_readQueues
					    removeObjectForKey: object];
				}
			}
# ifdef OF_HAVE_BLOCKS
		}
# endif
	} else
		assert(0);
}
#endif

- (void)run
{
	[self runUntilDate: nil];
}








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	}
#endif
}

#ifdef OF_HAVE_SOCKETS
- (void)objectIsReadyForReading: (id)object
{
	/*
	 * Retain the queue so that it doesn't disappear from us because the
	 * handler called -[cancelAsyncRequests].
	 */
	OFList OF_GENERIC(OF_KINDOF(OFRunLoop_ReadQueueItem*)) *queue =
	    [[_readQueues objectForKey: object] retain];


	assert(queue != nil);

	@try {
		if (![[queue firstObject] handleForObject: object]) {
			of_list_object_t *listObject = [queue firstListObject];






			/*

			 * The handler might have called -[cancelAsyncRequests]
			 * so that our queue is now empty, in which case we

			 * should do nothing.


			 */

			if (listObject != NULL) {


				[queue removeListObject: listObject];

				if ([queue count] == 0) {
					[_kernelEventObserver
					    removeObjectForReading: object];
					[_readQueues
					    removeObjectForKey: object];
				}
			}







		}



	} @finally {





































		[queue release];
	}


































































































































































































}
#endif

- (void)run
{
	[self runUntilDate: nil];
}
︙︙

Modified src/OFStream.h from [b9b7b417fc] to [a07511dad6].

︙︙
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 * @return The file descriptor for the write end of the stream
 */
- (int)fileDescriptorForWriting;

#ifdef OF_HAVE_SOCKETS
/*!
 * @brief Cancels all pending asynchronous requests on the stream.
 *
 * @warning You are not allowed to call this inside the handler of an
 *	    asynchronous request, as this would cancel the asynchronous request
 *	    that is currently being handled! To cancel all pending asynchronous
 *	    requests after the handler has finished executing, you may schedule
 *	    a timer for this method with a timeout of 0 from inside the handler.
 */
- (void)cancelAsyncRequests;
#endif

/*!
 * @brief "Reverses" a read operation, meaning the bytes from the specified
 *	  buffer will be returned on the next read operation.








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 * @return The file descriptor for the write end of the stream
 */
- (int)fileDescriptorForWriting;

#ifdef OF_HAVE_SOCKETS
/*!
 * @brief Cancels all pending asynchronous requests on the stream.






 */
- (void)cancelAsyncRequests;
#endif

/*!
 * @brief "Reverses" a read operation, meaning the bytes from the specified
 *	  buffer will be returned on the next read operation.
︙︙

Modified src/OFUDPSocket.h from [2d7a3ab4ec] to [087ce7f471].

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 */
- (void)sendBuffer: (const void*)buffer
	    length: (size_t)length
	  receiver: (const of_udp_socket_address_t*)receiver;

/*!
 * @brief Cancels all pending asynchronous requests on the socket.
 *
 * @warning You are not allowed to call this inside the handler of an
 *	    asynchronous request, as this would cancel the asynchronous request
 *	    that is currently being handled! To cancel all pending asynchronous
 *	    requests after the handler has finished executing, you may schedule
 *	    a timer for this method with a timeout of 0 from inside the handler.
 */
- (void)cancelAsyncRequests;

/*!
 * @brief Closes the socket so that it can neither receive nor send any more
 *	  datagrams.
 */








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 */
- (void)sendBuffer: (const void*)buffer
	    length: (size_t)length
	  receiver: (const of_udp_socket_address_t*)receiver;

/*!
 * @brief Cancels all pending asynchronous requests on the socket.






 */
- (void)cancelAsyncRequests;

/*!
 * @brief Closes the socket so that it can neither receive nor send any more
 *	  datagrams.
 */
︙︙

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