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https://github.com/status-im/react-native.git
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7f27888878
Summary: This diff adds performance loggers for Fabric in Android to be able to compare current version or RN with Fabric This is the summary of Points and Annotations: - **UIManager_CommitStart**: time that React starts the commit (react tree is ready to start rendering in native) - **UIManager_LayoutTime**: this is the time it takes to calculate layout in yoga - **UIManager_FabricFinishTransactionTime**: Time it takes transform "C++ mutationInstructions" into "Java MountItems" and cross boundaries from C++ to Java (including serialization of data) (THIS IS ONLY FABRIC) - **UIManager_DispatchViewUpdates**: time right before RN moves the mount operations to the Queue that is going to be processed in the next tick UI thread - **UIManager_BatchRunStart**: time right before the mountItems are going to be process in the UI Thread - **UIManager_BatchedExecutionTime**: time it took to run batched mountItems (usually layout and prop updates on views) - **UIManager_NonBatchedExecutionTime**: time it took to run non-batched mountItems (usually creation of views) Reviewed By: fkgozali Differential Revision: D13838337 fbshipit-source-id: 0a707619829e7d95ce94d9305ff434d1224afc46
93 lines
2.7 KiB
C++
93 lines
2.7 KiB
C++
// Copyright (c) Facebook, Inc. and its affiliates.
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// This source code is licensed under the MIT license found in the
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// LICENSE file in the root directory of this source tree.
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#pragma once
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#include <folly/SharedMutex.h>
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#include <memory>
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#include <shared_mutex>
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#include <react/components/root/RootShadowNode.h>
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#include <react/core/LayoutConstraints.h>
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#include <react/core/ReactPrimitives.h>
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#include <react/core/ShadowNode.h>
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#include <react/mounting/ShadowViewMutation.h>
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#include <react/uimanager/ShadowTreeDelegate.h>
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namespace facebook {
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namespace react {
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using ShadowTreeCommitTransaction = std::function<UnsharedRootShadowNode(
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const SharedRootShadowNode &oldRootShadowNode)>;
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/*
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* Represents the shadow tree and its lifecycle.
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*/
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class ShadowTree final {
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public:
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/*
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* Creates a new shadow tree instance.
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*/
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ShadowTree(
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SurfaceId surfaceId,
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const LayoutConstraints &layoutConstraints,
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const LayoutContext &layoutContext);
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~ShadowTree();
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/*
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* Returns the `SurfaceId` associated with the shadow tree.
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*/
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SurfaceId getSurfaceId() const;
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/*
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* Performs commit calling `transaction` function with a `oldRootShadowNode`
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* and expecting a `newRootShadowNode` as a return value.
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* The `transaction` function can abort commit returning `nullptr`.
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* If a `revision` pointer is not null, the method will store there a
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* contiguous revision number of the successfully performed transaction.
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* Returns `true` if the operation finished successfully.
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*/
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bool tryCommit(
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ShadowTreeCommitTransaction transaction,
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long commitStartTime,
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int *revision = nullptr) const;
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/*
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* Calls `tryCommit` in a loop until it finishes successfully.
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*/
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void commit(
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ShadowTreeCommitTransaction transaction,
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long commitStartTime,
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int *revision = nullptr) const;
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#pragma mark - Delegate
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/*
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* Sets and gets the delegate.
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* The delegate is stored as a raw pointer, so the owner must null
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* the pointer before being destroyed.
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*/
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void setDelegate(ShadowTreeDelegate const *delegate);
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ShadowTreeDelegate const *getDelegate() const;
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private:
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UnsharedRootShadowNode cloneRootShadowNode(
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const SharedRootShadowNode &oldRootShadowNode,
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const LayoutConstraints &layoutConstraints,
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const LayoutContext &layoutContext) const;
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void emitLayoutEvents(const ShadowViewMutationList &mutations) const;
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const SurfaceId surfaceId_;
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mutable folly::SharedMutex commitMutex_;
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mutable SharedRootShadowNode rootShadowNode_; // Protected by `commitMutex_`.
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mutable int revision_{1}; // Protected by `commitMutex_`.
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ShadowTreeDelegate const *delegate_;
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};
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} // namespace react
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} // namespace facebook
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