Swiftgram/Source/ASRunLoopQueue.h
Max Wang 2618c50073 New runloop queue to coalesce Interface state update calls. (#788)
* fix SIMULATE_WEB_RESPONSE not imported #449

* Coalesce interface state updates to ASCATransactionQueue before CATransaction commit.

This will avoid duplicate interface state delegate calls caused by view repeatly added/removed to/from hierarchy during controller animation transition.

* fix tests for new run loop queue

* Support for disabling ASCATransactionQueue

* Fix didExitHierarchy to use ASCATransactionQueue.

* merge range managed and none range managed for didExitHierarchy

* Revert "merge range managed and none range managed for didExitHierarchy"

This reverts commit f807efaa65ed5dbdb6622d06da542e01a53715fa.

* merge range managed and none range managed for didExitHierarchy

* remove metadata

* abstract queue to impl class methods

* Add tests

* Fix test fail because of shared object.

* guard _pendingInterfaceState access with lock

* name refactor

* Refactor from comments https://github.com/TextureGroup/Texture/pull/788/\#pullrequestreview-94849919

* Apply InterfaceState immediately after ASCATranactionQueue is processed and before next runloop started.

* refactor

* no op to start CI build

* remove unused var and kick off tests

* change lisence

* remove code for weak ref

* add change log and adjust license
2018-02-13 12:10:20 -08:00

94 lines
3.0 KiB
Objective-C

//
// ASRunLoopQueue.h
// Texture
//
// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the /ASDK-Licenses directory of this source tree. An additional
// grant of patent rights can be found in the PATENTS file in the same directory.
//
// Modifications to this file made after 4/13/2017 are: Copyright (c) 2017-present,
// Pinterest, Inc. Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
#import <Foundation/Foundation.h>
#import <AsyncDisplayKit/ASBaseDefines.h>
NS_ASSUME_NONNULL_BEGIN
@protocol ASCATransactionQueueObserving <NSObject>
- (void)prepareForCATransactionCommit;
@end
@interface ASAbstractRunLoopQueue : NSObject
@end
AS_SUBCLASSING_RESTRICTED
@interface ASRunLoopQueue<ObjectType> : ASAbstractRunLoopQueue <NSLocking>
/**
* Create a new queue with the given run loop and handler.
*
* @param runloop The run loop that will drive this queue.
* @param retainsObjects Whether the queue should retain its objects.
* @param handlerBlock An optional block to be run for each enqueued object.
*
* @discussion You may pass @c nil for the handler if you simply want the objects to
* be retained at enqueue time, and released during the run loop step. This is useful
* for creating a "main deallocation queue", as @c ASDeallocQueue creates its own
* worker thread with its own run loop.
*/
- (instancetype)initWithRunLoop:(CFRunLoopRef)runloop
retainObjects:(BOOL)retainsObjects
handler:(nullable void(^)(ObjectType dequeuedItem, BOOL isQueueDrained))handlerBlock;
- (void)enqueue:(ObjectType)object;
@property (atomic, readonly) BOOL isEmpty;
@property (nonatomic, assign) NSUInteger batchSize; // Default == 1.
@property (nonatomic, assign) BOOL ensureExclusiveMembership; // Default == YES. Set-like behavior.
@end
AS_SUBCLASSING_RESTRICTED
@interface ASCATransactionQueue : ASAbstractRunLoopQueue
@property (atomic, readonly) BOOL isEmpty;
@property (atomic, readonly) BOOL disabled;
/**
* The queue to run on main run loop before CATransaction commit.
*
* @discussion this queue will run after ASRunLoopQueue and before CATransaction commit
* to get last chance of updating/coalesce info like interface state.
* Each node will only be called once per transaction commit to reflect interface change.
*/
@property (class, atomic, readonly) ASCATransactionQueue *sharedQueue;
- (void)enqueue:(id<ASCATransactionQueueObserving>)object;
/**
* @abstract Apply a node's interfaceState immediately rather than adding to the queue.
*/
- (void)disable;
@end
AS_SUBCLASSING_RESTRICTED
@interface ASDeallocQueue : NSObject
@property (class, atomic, readonly) ASDeallocQueue *sharedDeallocationQueue;
- (void)test_drain;
- (void)releaseObjectInBackground:(id __strong _Nullable * _Nonnull)objectPtr;
@end
NS_ASSUME_NONNULL_END