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65 lines
2.0 KiB
Objective-C
65 lines
2.0 KiB
Objective-C
//
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// ASMainSerialQueue.h
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// Texture
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//
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// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the /ASDK-Licenses directory of this source tree. An additional
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// grant of patent rights can be found in the PATENTS file in the same directory.
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//
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// Modifications to this file made after 4/13/2017 are: Copyright (c) 2017-present,
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// Pinterest, Inc. Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// 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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NS_ASSUME_NONNULL_BEGIN
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AS_SUBCLASSING_RESTRICTED
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@interface ASMainSerialQueue : NSObject
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- (void)performBlockOnMainThread:(dispatch_block_t)block;
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- (void)flushAllBlocks;
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@end
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/**
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* A shortcut to read one property from an atomic without copying the whole value.
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*
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* For example, `NSUInteger c = ASAtomicAccessOneProperty(myAtomicArray, count);`
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* The slower form would be `NSUInteger c = myAtomicArray.value.count;`
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*/
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#define ASAtomicAccessOneProperty(instance, getterName) ({ \
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__block __typeof([instance.value getterName]) __value; \
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[instance accessWithBlock:^(id mutableValue) { \
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__value = [mutableValue getterName]; \
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}]; \
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__value; \
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})
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#define ASAtomicArrayType(T) ASAtomic<NSArray<T *> *, NSMutableArray<T *> *>
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/**
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* An atomic object container designed for classes that have mutable instances.
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*/
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@interface ASAtomic<CopiedType : id<NSCopying>, MutableType : id<NSCopying>> : NSObject
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+ (instancetype)atomicWithValue:(MutableType)value;
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- (void)accessWithBlock:(AS_NOESCAPE void (^)(MutableType mutableValue))block;
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- (CopiedType)readAndUpdate:(nullable AS_NOESCAPE void (^)(MutableType mutableValue))block;
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@property (atomic, copy, readonly) CopiedType value;
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@end
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NS_ASSUME_NONNULL_END
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