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[ASRunLoopQueue - Performance] Add ASDeallocQueue for efficient object teardown. (#2399)

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* [ASRunLoopQueue - Performance] Add ASDeallocQueue for efficient object teardown.

This measurably reduces block overhead and context switching.  In the layout benchmark,
it increases ops/s while actually reducing CPU utilization.  This suggests that we are
now at a lock-bounded local maximum, at least for tri-core devices.

* [ASDeallocQueue] Update convenience helper method and adopt in ASImageNode etc.

* [ASDeallocQueue] Reimplement the queue using a timer-based runloop.

* [Debugging] Re-enable ASDisplayNode Event Log.

* [ASDeallocQueue] Final refinements, comments, code minimization.

* [ASDeallocQueue] Fix for lock release needed in early return (refactoring typo from last commit)
This commit is contained in:
appleguy
2016-10-17 12:24:11 -07:00
committed by GitHub
parent 11293d545a
commit 0a5c1f43a8
8 changed files with 155 additions and 44 deletions
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14
AsyncDisplayKit/ASRunLoopQueue.h
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@@ -16,11 +16,21 @@ NS_ASSUME_NONNULL_BEGIN
@interface ASRunLoopQueue<ObjectType> : NSObject
- (instancetype)initWithRunLoop:(CFRunLoopRef)runloop andHandler:(void(^)(ObjectType dequeuedItem, BOOL isQueueDrained))handlerBlock;
- (instancetype)initWithRunLoop:(CFRunLoopRef)runloop
andHandler:(void(^)(ObjectType dequeuedItem, BOOL isQueueDrained))handlerBlock;
- (void)enqueue:(ObjectType)object;
@property (nonatomic, assign) NSUInteger batchSize;
@property (nonatomic, assign) NSUInteger batchSize; // Default == 1.
@property (nonatomic, assign) BOOL ensureExclusiveMembership; // Default == YES. Set-like behavior.
@end
@interface ASDeallocQueue : NSObject
+ (instancetype)sharedDeallocationQueue;
- (void)releaseObjectInBackground:(id)object;
@end