mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Ruslan Shestopalyuk
14ab76ac30
Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/36312 ## Changelog: [Internal] - `clearMarks` and `clearMeasures` methods are incidental to the `NativePerformance` TurboModule functionality, as in reality this responsibility belongs more on the `NativePerformanceObserver` and `PerformanceEntryReporter` side. This is something that [the standard indirectly suggests](https://www.w3.org/TR/user-timing/#clearmarks-method) as well (referencing [performance entry buffer](https://www.w3.org/TR/performance-timeline/#dfn-performance-entry-buffer)). The new implementation should be also a little bit more efficient, as it avoids calling the predicate for each entry. Finally (and frankly, the main reason for this change, from my perspective), it will simplify mocking/testing the JS part of the PerfAPI code. Reviewed By: rubennorte Differential Revision: D43621174 fbshipit-source-id: c4217a0da1d8ecbce797240627f7b4f057d85b97
91 lines
2.5 KiB
JavaScript
91 lines
2.5 KiB
JavaScript
/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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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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*
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* @flow strict
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* @format
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*/
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import type {
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GetPendingEntriesResult,
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RawPerformanceEntry,
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RawPerformanceEntryType,
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Spec as NativePerformanceObserver,
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} from '../NativePerformanceObserver';
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import {RawPerformanceEntryTypeValues} from '../RawPerformanceEntry';
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const reportingType: Set<RawPerformanceEntryType> = new Set();
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const eventCounts: Map<string, number> = new Map();
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const durationThresholds: Map<RawPerformanceEntryType, number> = new Map();
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let entries: Array<RawPerformanceEntry> = [];
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let onPerformanceEntryCallback: ?() => void;
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const NativePerformanceObserverMock: NativePerformanceObserver = {
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startReporting: (entryType: RawPerformanceEntryType) => {
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reportingType.add(entryType);
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},
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stopReporting: (entryType: RawPerformanceEntryType) => {
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reportingType.delete(entryType);
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durationThresholds.delete(entryType);
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},
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popPendingEntries: (): GetPendingEntriesResult => {
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const res = entries;
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entries = [];
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return {
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droppedEntriesCount: 0,
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entries: res,
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};
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},
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setOnPerformanceEntryCallback: (callback?: () => void) => {
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onPerformanceEntryCallback = callback;
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},
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logRawEntry: (entry: RawPerformanceEntry) => {
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if (reportingType.has(entry.entryType)) {
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const durationThreshold = durationThresholds.get(entry.entryType);
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if (
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durationThreshold !== undefined &&
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entry.duration < durationThreshold
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) {
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return;
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}
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entries.push(entry);
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// $FlowFixMe[incompatible-call]
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global.queueMicrotask(() => {
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// We want to emulate the way it's done in native (i.e. async/batched)
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onPerformanceEntryCallback?.();
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});
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}
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if (entry.entryType === RawPerformanceEntryTypeValues.EVENT) {
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eventCounts.set(entry.name, (eventCounts.get(entry.name) ?? 0) + 1);
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}
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},
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getEventCounts: (): $ReadOnlyArray<[string, number]> => {
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return Array.from(eventCounts.entries());
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},
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setDurationThreshold: (
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entryType: RawPerformanceEntryType,
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durationThreshold: number,
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) => {
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durationThresholds.set(entryType, durationThreshold);
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},
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clearEntries: (entryType: RawPerformanceEntryType, entryName?: string) => {
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entries = entries.filter(
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e =>
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e.entryType === entryType &&
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(entryName == null || e.name === entryName),
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);
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},
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};
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export default NativePerformanceObserverMock;
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