ObjFW  Diff

#import "OFSortedList.h"
#import "OFTimer.h"
#import "OFTimer+Private.h"
#import "OFDate.h"

#import "OFObserveFailedException.h"

const of_run_loop_mode_t of_run_loop_mode_default = @"of_run_loop_mode_default";
static OFRunLoop *mainRunLoop = nil;

@interface OFRunLoopState: OFObject
#ifdef OF_HAVE_SOCKETS
    <OFKernelEventObserverDelegate>
#endif
{

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

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

@interface OFRunLoopExactReadQueueItem: OFRunLoopQueueItem
{
@public
# ifdef OF_HAVE_BLOCKS
	of_stream_async_read_block_t _block;
# endif
	void *_buffer;
	size_t _exactLength, _readLength;
}
@end

@interface OFRunLoopReadLineQueueItem: OFRunLoopQueueItem
{
@public
# ifdef OF_HAVE_BLOCKS
	of_stream_async_read_line_block_t _block;
# endif
	of_string_encoding_t _encoding;
}
@end

@interface OFRunLoopWriteDataQueueItem: OFRunLoopQueueItem
{
@public
# ifdef OF_HAVE_BLOCKS
	of_stream_async_write_data_block_t _block;
# endif
	OFData *_data;
	size_t _writtenLength;
}
@end

@interface OFRunLoopWriteStringQueueItem: OFRunLoopQueueItem
{
@public
# ifdef OF_HAVE_BLOCKS
	of_stream_async_write_string_block_t _block;
# endif
	OFString *_string;
	of_string_encoding_t _encoding;
	size_t _writtenLength;
}
@end

# if !defined(OF_WII) && !defined(OF_NINTENDO_3DS)
@interface OFRunLoopConnectQueueItem: OFRunLoopQueueItem
@end

}
@end

@interface OFRunLoopDatagramReceiveQueueItem: OFRunLoopQueueItem
{
@public
# ifdef OF_HAVE_BLOCKS
	of_datagram_socket_async_receive_block_t _block;
# endif
	void *_buffer;
	size_t _length;
}
@end

@interface OFRunLoopDatagramSendQueueItem: OFRunLoopQueueItem
{
@public
# ifdef OF_HAVE_BLOCKS
	of_datagram_socket_async_send_data_block_t _block;
# endif
	OFData *_data;
	of_socket_address_t _receiver;
}
@end

@interface OFRunLoopPacketReceiveQueueItem: OFRunLoopQueueItem
{
@public
# ifdef OF_HAVE_BLOCKS
	of_sequenced_packet_socket_async_receive_block_t _block;
# endif
	void *_buffer;
	size_t _length;
}
@end

@interface OFRunLoopPacketSendQueueItem: OFRunLoopQueueItem
{
@public
# ifdef OF_HAVE_BLOCKS
	of_sequenced_packet_socket_async_send_data_block_t _block;
# endif
	OFData *_data;
}
@end
#endif

@implementation OFRunLoopState

	OFList OF_GENERIC(OF_KINDOF(OFRunLoopReadQueueItem *)) *queue =
	    [[_readQueues objectForKey: object] retain];

	assert(queue != nil);

	@try {
		if (![queue.firstObject handleObject: 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) {
				/*
				 * Make sure we keep the target until after we
				 * are done removing the object. The reason for
				 * this is that the target might call
				 * -[cancelAsyncRequests] in its dealloc.
				 */

				[[listObject->object retain] autorelease];

				[queue removeListObject: listObject];

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

	 */
	OFList *queue = [[_writeQueues objectForKey: object] retain];

	assert(queue != nil);

	@try {
		if (![queue.firstObject handleObject: 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) {
				/*
				 * Make sure we keep the target until after we
				 * are done removing the object. The reason for
				 * this is that the target might call
				 * -[cancelAsyncRequests] in its dealloc.
				 */

				[[listObject->object retain] autorelease];

				[queue removeListObject: listObject];

				if (queue.count == 0) {
					[_kernelEventObserver
					    removeObjectForWriting: object];
					[_writeQueues
					    removeObjectForKey: object];
				}

		acceptedSocket = nil;
		exception = e;
	}

# ifdef OF_HAVE_BLOCKS
	if (_block != NULL) {
		if ([object isKindOfClass: [OFStreamSocket class]])
			return ((of_stream_socket_async_accept_block_t)
			    _block)(acceptedSocket, exception);
		else if ([object isKindOfClass:
		    [OFSequencedPacketSocket class]])
			return
			    ((of_sequenced_packet_socket_async_accept_block_t)
			    _block)(acceptedSocket, exception);
		else
			OF_ENSURE(0);
	} else {
# endif
		if (![_delegate respondsToSelector:
		    @selector(socket:didAcceptSocket:exception:)])
			return false;

		return [_delegate socket: object

# endif
@end

@implementation OFRunLoopDatagramReceiveQueueItem
- (bool)handleObject: (id)object
{
	size_t length;
	of_socket_address_t address;
	id exception = nil;

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

+ (void)of_setMainRunLoop: (OFRunLoop *)runLoop
{
	mainRunLoop = [runLoop retain];
}

static OFRunLoopState *
stateForMode(OFRunLoop *self, of_run_loop_mode_t mode, bool create)
{
	OFRunLoopState *state;

#ifdef OF_HAVE_THREADS
	[self->_statesMutex lock];
	@try {
#endif

									\
	objc_autoreleasePoolPop(pool);

+ (void)of_addAsyncReadForStream: (OFStream <OFReadyForReadingObserving> *)
				      stream
			  buffer: (void *)buffer
			  length: (size_t)length
			    mode: (of_run_loop_mode_t)mode
# ifdef OF_HAVE_BLOCKS
			   block: (of_stream_async_read_block_t)block
# endif
			delegate: (id <OFStreamDelegate>)delegate
{
	NEW_READ(OFRunLoopReadQueueItem, stream, mode)

	queueItem->_delegate = [delegate retain];
# ifdef OF_HAVE_BLOCKS
	queueItem->_block = [block copy];
# endif
	queueItem->_buffer = buffer;
	queueItem->_length = length;

	QUEUE_ITEM
}

+ (void)of_addAsyncReadForStream: (OFStream <OFReadyForReadingObserving> *)
				      stream
			  buffer: (void *)buffer
		     exactLength: (size_t)exactLength
			    mode: (of_run_loop_mode_t)mode
# ifdef OF_HAVE_BLOCKS
			   block: (of_stream_async_read_block_t)block
# endif
			delegate: (id <OFStreamDelegate>)delegate
{
	NEW_READ(OFRunLoopExactReadQueueItem, stream, mode)

	queueItem->_delegate = [delegate retain];
# ifdef OF_HAVE_BLOCKS
	queueItem->_block = [block copy];
# endif
	queueItem->_buffer = buffer;
	queueItem->_exactLength = exactLength;

	QUEUE_ITEM
}

+ (void)of_addAsyncReadLineForStream: (OFStream <OFReadyForReadingObserving> *)
					  stream
			    encoding: (of_string_encoding_t)encoding
				mode: (of_run_loop_mode_t)mode
# ifdef OF_HAVE_BLOCKS
			       block: (of_stream_async_read_line_block_t)block
# endif
			    delegate: (id <OFStreamDelegate>)delegate
{
	NEW_READ(OFRunLoopReadLineQueueItem, stream, mode)

	queueItem->_delegate = [delegate retain];
# ifdef OF_HAVE_BLOCKS
	queueItem->_block = [block copy];
# endif
	queueItem->_encoding = encoding;

	QUEUE_ITEM
}

+ (void)of_addAsyncWriteForStream: (OFStream <OFReadyForWritingObserving> *)
				       stream
			     data: (OFData *)data
			     mode: (of_run_loop_mode_t)mode
# ifdef OF_HAVE_BLOCKS
			    block: (of_stream_async_write_data_block_t)block
# endif
			 delegate: (id <OFStreamDelegate>)delegate
{
	NEW_WRITE(OFRunLoopWriteDataQueueItem, stream, mode)

	queueItem->_delegate = [delegate retain];
# ifdef OF_HAVE_BLOCKS
	queueItem->_block = [block copy];
# endif
	queueItem->_data = [data copy];

	QUEUE_ITEM
}

+ (void)of_addAsyncWriteForStream: (OFStream <OFReadyForWritingObserving> *)
				       stream
			   string: (OFString *)string
			 encoding: (of_string_encoding_t)encoding
			     mode: (of_run_loop_mode_t)mode
# ifdef OF_HAVE_BLOCKS
			    block: (of_stream_async_write_string_block_t)block
# endif
			 delegate: (id <OFStreamDelegate>)delegate
{
	NEW_WRITE(OFRunLoopWriteStringQueueItem, stream, mode)

	queueItem->_delegate = [delegate retain];
# ifdef OF_HAVE_BLOCKS
	queueItem->_block = [block copy];
# endif
	queueItem->_string = [string copy];
	queueItem->_encoding = encoding;

	QUEUE_ITEM
}

# if !defined(OF_WII) && !defined(OF_NINTENDO_3DS)
+ (void)of_addAsyncConnectForSocket: (id)sock
			       mode: (of_run_loop_mode_t)mode
			   delegate: (id <OFRunLoopConnectDelegate>)delegate
{
	NEW_WRITE(OFRunLoopConnectQueueItem, sock, mode)

	queueItem->_delegate = [delegate retain];

	QUEUE_ITEM
}
# endif

+ (void)of_addAsyncAcceptForSocket: (id)sock
			      mode: (of_run_loop_mode_t)mode
			     block: (id)block
			  delegate: (id)delegate
{
	NEW_READ(OFRunLoopAcceptQueueItem, sock, mode)

	queueItem->_delegate = [delegate retain];
# ifdef OF_HAVE_BLOCKS
	queueItem->_block = [block copy];
# endif

	QUEUE_ITEM
}

+ (void)of_addAsyncReceiveForDatagramSocket: (OFDatagramSocket *)sock
    buffer: (void *)buffer
    length: (size_t)length
      mode: (of_run_loop_mode_t)mode
# ifdef OF_HAVE_BLOCKS
     block: (of_datagram_socket_async_receive_block_t)block
# endif
  delegate: (id <OFDatagramSocketDelegate>)delegate
{
	NEW_READ(OFRunLoopDatagramReceiveQueueItem, sock, mode)

	queueItem->_delegate = [delegate retain];
# ifdef OF_HAVE_BLOCKS
	queueItem->_block = [block copy];
# endif
	queueItem->_buffer = buffer;
	queueItem->_length = length;

	QUEUE_ITEM
}

+ (void)of_addAsyncSendForDatagramSocket: (OFDatagramSocket *)sock
      data: (OFData *)data
  receiver: (const of_socket_address_t *)receiver
      mode: (of_run_loop_mode_t)mode
# ifdef OF_HAVE_BLOCKS
     block: (of_datagram_socket_async_send_data_block_t)block
# endif
  delegate: (id <OFDatagramSocketDelegate>)delegate
{
	NEW_WRITE(OFRunLoopDatagramSendQueueItem, sock, mode)

	queueItem->_delegate = [delegate retain];
# ifdef OF_HAVE_BLOCKS
	queueItem->_block = [block copy];
# endif
	queueItem->_data = [data copy];
	queueItem->_receiver = *receiver;

	QUEUE_ITEM
}

+ (void)of_addAsyncReceiveForSequencedPacketSocket: (OFSequencedPacketSocket *)
							sock
    buffer: (void *)buffer
    length: (size_t)length
      mode: (of_run_loop_mode_t)mode
# ifdef OF_HAVE_BLOCKS
     block: (of_sequenced_packet_socket_async_receive_block_t)block
# endif
  delegate: (id <OFSequencedPacketSocketDelegate>)delegate
{
	NEW_READ(OFRunLoopPacketReceiveQueueItem, sock, mode)

	queueItem->_delegate = [delegate retain];
# ifdef OF_HAVE_BLOCKS
	queueItem->_block = [block copy];
# endif
	queueItem->_buffer = buffer;
	queueItem->_length = length;

	QUEUE_ITEM
}

+ (void)of_addAsyncSendForSequencedPacketSocket: (OFSequencedPacketSocket *)sock
      data: (OFData *)data
      mode: (of_run_loop_mode_t)mode
# ifdef OF_HAVE_BLOCKS
     block: (of_sequenced_packet_socket_async_send_data_block_t)block
# endif
  delegate: (id <OFSequencedPacketSocketDelegate>)delegate
{
	NEW_WRITE(OFRunLoopPacketSendQueueItem, sock, mode)

	queueItem->_delegate = [delegate retain];
# ifdef OF_HAVE_BLOCKS
	queueItem->_block = [block copy];
# endif
	queueItem->_data = [data copy];

	QUEUE_ITEM
}
# undef NEW_READ
# undef NEW_WRITE
# undef QUEUE_ITEM

+ (void)of_cancelAsyncRequestsForObject: (id)object
				   mode: (of_run_loop_mode_t)mode
{
	void *pool = objc_autoreleasePoolPush();
	OFRunLoop *runLoop = [self currentRunLoop];
	OFRunLoopState *state = stateForMode(runLoop, mode, false);
	OFList *queue;

	if (state == nil)

	@try {
		OFRunLoopState *state;

		_states = [[OFMutableDictionary alloc] init];

		state = [[OFRunLoopState alloc] init];
		@try {
			[_states setObject: state
				    forKey: of_run_loop_mode_default];
		} @finally {
			[state release];
		}

#ifdef OF_HAVE_THREADS
		_statesMutex = [[OFMutex alloc] init];
#endif

#endif

	[super dealloc];
}

- (void)addTimer: (OFTimer *)timer
{
	[self addTimer: timer forMode: of_run_loop_mode_default];
}

- (void)addTimer: (OFTimer *)timer forMode: (of_run_loop_mode_t)mode
{
	OFRunLoopState *state = stateForMode(self, mode, true);

#ifdef OF_HAVE_THREADS
	[state->_timersQueueMutex lock];
	@try {
#endif

#if defined(OF_HAVE_SOCKETS)
	[state->_kernelEventObserver cancel];
#elif defined(OF_HAVE_THREADS)
	[state->_condition signal];
#endif
}

- (void)of_removeTimer: (OFTimer *)timer forMode: (of_run_loop_mode_t)mode
{
	OFRunLoopState *state = stateForMode(self, mode, false);

	if (state == nil)
		return;

#ifdef OF_HAVE_THREADS
	[state->_timersQueueMutex lock];
	@try {
#endif
		of_list_object_t *iter;

		for (iter = state->_timersQueue.firstListObject; iter != NULL;
		    iter = iter->next) {
			if ([iter->object isEqual: timer]) {
				[state->_timersQueue removeListObject: iter];
				break;
			}
		}
#ifdef OF_HAVE_THREADS
	} @finally {
		[state->_timersQueueMutex unlock];
	}
#endif
}

#ifdef OF_AMIGAOS
- (void)addExecSignal: (ULONG)signal target: (id)target selector: (SEL)selector
{
	[self addExecSignal: signal
		    forMode: of_run_loop_mode_default
		     target: target
		   selector: selector];
}

- (void)addExecSignal: (ULONG)signal
	      forMode: (of_run_loop_mode_t)mode
	       target: (id)target
	     selector: (SEL)selector
{
	OFRunLoopState *state = stateForMode(self, mode, true);

# ifdef OF_HAVE_THREADS
	[state->_execSignalsMutex lock];

}

- (void)removeExecSignal: (ULONG)signal
		  target: (id)target
		selector: (SEL)selector
{
	[self removeExecSignal: signal
		       forMode: of_run_loop_mode_default
			target: target
		      selector: selector];
}

- (void)removeExecSignal: (ULONG)signal
		 forMode: (of_run_loop_mode_t)mode
		  target: (id)target
		selector: (SEL)selector
{
	OFRunLoopState *state = stateForMode(self, mode, false);

	if (state == nil)
		return;

- (void)runUntilDate: (OFDate *)deadline
{
	_stop = false;

	while (!_stop &&
	    (deadline == nil || deadline.timeIntervalSinceNow >= 0))
		[self runMode: of_run_loop_mode_default beforeDate: deadline];
}

- (void)runMode: (of_run_loop_mode_t)mode beforeDate: (OFDate *)deadline
{
	void *pool = objc_autoreleasePoolPush();
	of_run_loop_mode_t previousMode = _currentMode;
	OFRunLoopState *state = stateForMode(self, mode, false);

	if (state == nil)
		return;

	_currentMode = mode;
	@try {
		OFDate *nextTimer;
#if defined(OF_AMIGAOS) && !defined(OF_HAVE_SOCKETS) && defined(OF_HAVE_THREADS)
		ULONG signalMask;
#endif

		for (;;) {
			OFTimer *timer;

#ifdef OF_HAVE_THREADS
			[state->_timersQueueMutex lock];
			@try {
#endif
				of_list_object_t *listObject =
				    state->_timersQueue.firstListObject;

				if (listObject != NULL && [listObject->object

				    fireDate].timeIntervalSinceNow <= 0) {
					timer = [[listObject->object
					    retain] autorelease];

					[state->_timersQueue
					    removeListObject: listObject];

					[timer of_setInRunLoop: nil mode: nil];
				} else
					break;
#ifdef OF_HAVE_THREADS
			} @finally {
				[state->_timersQueueMutex unlock];

		} @finally {
			[state->_timersQueueMutex unlock];
		}
#endif

		/* Watch for I/O events until the next timer is due */
		if (nextTimer != nil || deadline != nil) {
			of_time_interval_t timeout;

			if (nextTimer != nil && deadline == nil)
				timeout = nextTimer.timeIntervalSinceNow;
			else if (nextTimer == nil && deadline != nil)
				timeout = deadline.timeIntervalSinceNow;
			else
				timeout = [nextTimer earlierDate: deadline]

	} @finally {
		_currentMode = previousMode;
	}
}

- (void)stop
{
	OFRunLoopState *state =
	    stateForMode(self, of_run_loop_mode_default, false);

	_stop = true;

	if (state == nil)
		return;

#if defined(OF_HAVE_SOCKETS)
	[state->_kernelEventObserver cancel];
#elif defined(OF_HAVE_THREADS)
	[state->_condition signal];
#endif
}
@end