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src
Core
OOAsyncQueue.h
Go to the documentation of this file.
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/*
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OOAsyncQueue.h
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By Jens Ayton
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OOAsyncQueue is used to pass messages (in the form of arbitrary objects)
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between threads. It is many-to-many capable, i.e. it is safe to send messages
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from any number of threads and to read messages from any number of threads.
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Copyright (C) 2007-2013 Jens Ayton
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#import <Foundation/Foundation.h>
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@interface
OOAsyncQueue
: NSObject
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{
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@private
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NSConditionLock *
_lock
;
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struct
OOAsyncQueueElement
*
_head
,
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*
_tail
,
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*
_pool
;
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unsigned
_elemCount
,
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_poolCount
;
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}
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- (BOOL)enqueue:(
id
)object;
// Returns NO on failure, or if object is nil.
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- (id)dequeue;
// Blocks until the queue is non-empty.
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- (id)tryDequeue;
// Returns nil if empty.
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// Due to the asynchronous nature of the queue, these values are immediately out of date.
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- (BOOL)empty;
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- (unsigned)
count
;
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- (void)emptyQueue;
// Releases all elements.
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@end
count
unsigned count
Definition
OOParticleSystem.m:270
OOAsyncQueue
Definition
OOAsyncQueue.h:37
OOAsyncQueue::_poolCount
unsigned _poolCount
Definition
OOAsyncQueue.h:44
OOAsyncQueue::_elemCount
unsigned _elemCount
Definition
OOAsyncQueue.h:43
OOAsyncQueue::_pool
struct OOAsyncQueueElement * _pool
Definition
OOAsyncQueue.h:42
OOAsyncQueue::_head
struct OOAsyncQueueElement * _head
Definition
OOAsyncQueue.h:40
OOAsyncQueue::_tail
struct OOAsyncQueueElement * _tail
Definition
OOAsyncQueue.h:41
OOAsyncQueue::_lock
NSConditionLock * _lock
Definition
OOAsyncQueue.h:39
OOAsyncQueueElement
Definition
OOAsyncQueue.m:62
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