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git-subtree-dir: submodules/AsyncDisplayKit git-subtree-mainline: d06f423e0ed3df1fed9bd10d79ee312a9179b632 git-subtree-split: 02bedc12816e251ad71777f9d2578329b6d2bef6
93 lines
2.9 KiB
Objective-C
93 lines
2.9 KiB
Objective-C
//
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// ASRunLoopQueue.h
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// Texture
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//
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// Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.
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// Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc. All rights reserved.
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// Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
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//
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#import <Foundation/Foundation.h>
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#import <AsyncDisplayKit/ASBaseDefines.h>
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#import <AsyncDisplayKit/ASLocking.h>
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NS_ASSUME_NONNULL_BEGIN
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@protocol ASCATransactionQueueObserving <NSObject>
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- (void)prepareForCATransactionCommit;
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@end
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@interface ASAbstractRunLoopQueue : NSObject
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@end
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AS_SUBCLASSING_RESTRICTED
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@interface ASRunLoopQueue<ObjectType> : ASAbstractRunLoopQueue <ASLocking>
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/**
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* Create a new queue with the given run loop and handler.
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*
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* @param runloop The run loop that will drive this queue.
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* @param retainsObjects Whether the queue should retain its objects.
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* @param handlerBlock An optional block to be run for each enqueued object.
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*
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* @discussion You may pass @c nil for the handler if you simply want the objects to
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* be retained at enqueue time, and released during the run loop step. This is useful
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* for creating a "main deallocation queue", as @c ASDeallocQueue creates its own
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* worker thread with its own run loop.
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*/
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- (instancetype)initWithRunLoop:(CFRunLoopRef)runloop
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retainObjects:(BOOL)retainsObjects
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handler:(nullable void(^)(ObjectType dequeuedItem, BOOL isQueueDrained))handlerBlock;
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- (void)enqueue:(ObjectType)object;
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@property (readonly) BOOL isEmpty;
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@property (nonatomic) NSUInteger batchSize; // Default == 1.
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@property (nonatomic) BOOL ensureExclusiveMembership; // Default == YES. Set-like behavior.
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@end
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/**
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* The queue to run on main run loop before CATransaction commit.
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*
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* @discussion this queue will run after ASRunLoopQueue and before CATransaction commit
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* to get last chance of updating/coalesce info like interface state.
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* Each node will only be called once per transaction commit to reflect interface change.
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*/
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AS_SUBCLASSING_RESTRICTED
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@interface ASCATransactionQueue : ASAbstractRunLoopQueue
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@property (readonly) BOOL isEmpty;
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@property (readonly, getter=isEnabled) BOOL enabled;
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- (void)enqueue:(id<ASCATransactionQueueObserving>)object;
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@end
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extern ASCATransactionQueue *_ASSharedCATransactionQueue;
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extern dispatch_once_t _ASSharedCATransactionQueueOnceToken;
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NS_INLINE ASCATransactionQueue *ASCATransactionQueueGet(void) {
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dispatch_once(&_ASSharedCATransactionQueueOnceToken, ^{
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_ASSharedCATransactionQueue = [[ASCATransactionQueue alloc] init];
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});
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return _ASSharedCATransactionQueue;
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}
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@interface ASDeallocQueue : NSObject
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@property (class, readonly) ASDeallocQueue *sharedDeallocationQueue;
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+ (ASDeallocQueue *)sharedDeallocationQueue NS_RETURNS_RETAINED;
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- (void)drain;
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- (void)releaseObjectInBackground:(id __strong _Nullable * _Nonnull)objectPtr;
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@end
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NS_ASSUME_NONNULL_END
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