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* [ASCollectionNode] Add -isProcessingUpdates and -onDidFinishProcessingUpdates: APIs. Over time, there have actually been a lot of legitimate uses for an API like this. In fact, I'm not quite sure what has held us back from adding one! I believe that at least some portion of -wait calls (even if less than 50%) could be replaced with -onDidFinishProcessingUpdates:, which could potentially improve the performance of applications using -wait by a significant amount. Please take a close look at implementation correctness. Although I'm in a bit of a rush, I'm aiming to make this properly documented and added a basic test -- but it could certainly use some more detailed testing as a followup. * [ASCollectionNode] Improvements to the implementation of -isProcessingUpdates and -onDidFinishProcessingUpdates: * Add lock to ASMainSerialQueue count method. * [ASTableNode] Implement -isProcessingUpdates and -onDidFinishProcessingUpdates:. Rename -waitUntil to consistent naming.
87 lines
1.9 KiB
Plaintext
87 lines
1.9 KiB
Plaintext
//
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// ASMainSerialQueue.mm
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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 <AsyncDisplayKit/ASMainSerialQueue.h>
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#import <AsyncDisplayKit/ASThread.h>
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#import <AsyncDisplayKit/ASInternalHelpers.h>
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@interface ASMainSerialQueue ()
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{
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ASDN::Mutex _serialQueueLock;
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NSMutableArray *_blocks;
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}
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@end
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@implementation ASMainSerialQueue
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- (instancetype)init
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{
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if (!(self = [super init])) {
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return nil;
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}
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_blocks = [[NSMutableArray alloc] init];
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return self;
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}
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- (NSUInteger)numberOfScheduledBlocks
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{
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ASDN::MutexLocker l(_serialQueueLock);
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return _blocks.count;
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}
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- (void)performBlockOnMainThread:(dispatch_block_t)block
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{
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ASDN::MutexLocker l(_serialQueueLock);
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[_blocks addObject:block];
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{
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ASDN::MutexUnlocker u(_serialQueueLock);
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[self runBlocks];
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}
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}
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- (void)runBlocks
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{
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dispatch_block_t mainThread = ^{
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do {
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ASDN::MutexLocker l(_serialQueueLock);
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dispatch_block_t block;
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if (_blocks.count > 0) {
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block = _blocks[0];
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[_blocks removeObjectAtIndex:0];
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} else {
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break;
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}
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{
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ASDN::MutexUnlocker u(_serialQueueLock);
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block();
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}
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} while (true);
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};
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ASPerformBlockOnMainThread(mainThread);
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}
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- (NSString *)description
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{
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return [[super description] stringByAppendingFormat:@" Blocks: %@", _blocks];
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}
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@end
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