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eac85b6c9a
These optimizations are surprisingly impactful. -setNeedsDisplay being called for every node triggered cancelAsyncDisplay, locking, and memory management overhead that is completely avoidable because Core Animation triggers first display automatically. The mutable array copy optimizations reduced this key cost by over 10x, from 52ms to 5ms on an iPad Air 2 / A8X with a real-world test case.
59 lines
2.3 KiB
Objective-C
59 lines
2.3 KiB
Objective-C
/* Copyright (c) 2014-present, Facebook, Inc.
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* All rights reserved.
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*
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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 root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import <Foundation/Foundation.h>
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#import <AsyncDisplayKit/ASBaseDefines.h>
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/**
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* Helper class for operation on multidimensional array, where the object of array may be an object or an array.
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*/
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ASDISPLAYNODE_EXTERN_C_BEGIN
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/**
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* Deep mutable copy of an array that contains arrays, which contain objects. It will go one level deep into the array to copy.
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* This method is substantially faster than the generalized version, e.g. about 10x faster, so use it whenever it fits the need.
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*/
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extern NSMutableArray<NSMutableArray *> *ASTwoDimensionalArrayDeepMutableCopy(NSArray<NSArray *> *array);
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/**
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* Deep mutable copy of multidimensional array. This is completely generalized and supports copying mixed-depth arrays,
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* where some subarrays might contain both elements and other subarrays. It will recursively do the multiple copy for each subarray.
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*/
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extern NSObject<NSCopying> *ASMultidimensionalArrayDeepMutableCopy(NSObject<NSCopying> *obj);
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/**
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* Insert the elements into the mutable multidimensional array at given index paths.
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*/
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extern void ASInsertElementsIntoMultidimensionalArrayAtIndexPaths(NSMutableArray *mutableArray, NSArray *indexPaths, NSArray *elements);
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/**
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* Delete the elements of the mutable multidimensional array at given index paths
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*/
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extern void ASDeleteElementsInMultidimensionalArrayAtIndexPaths(NSMutableArray *mutableArray, NSArray *indexPaths);
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/**
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* Find the elements of the mutable multidimensional array at given index paths.
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*/
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extern NSArray *ASFindElementsInMultidimensionalArrayAtIndexPaths(NSMutableArray *mutableArray, NSArray *indexPaths);
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/**
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* Return all the index paths of mutable multidimensional array at given index set, in ascending order.
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*/
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extern NSArray *ASIndexPathsForMultidimensionalArrayAtIndexSet(NSArray *MultidimensionalArray, NSIndexSet *indexSet);
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/**
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* Return all the index paths of mutable multidimensional array, in ascending order.
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*/
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extern NSArray *ASIndexPathsForMultidimensionalArray(NSArray *MultidimensionalArray);
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ASDISPLAYNODE_EXTERN_C_END
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