mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Ruslan Shestopalyuk
09ad0cc0c6
Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/35768 Changelog: [Internal] This implements native side mechanics for reporting user events timing to JS (PerformanceObserver API). See the standard for more details: https://www.w3.org/TR/event-timing/ The events are only logged when there are any active subscriptions (via `PerformanceObserver.observe`), also we only log "discrete events" (i.e. no likes of mouse move), so the overhead is non-existing. There are two main metrics of interest for an event lifecycle: * Time the event is spent in the queue, i.e. the time between it's created and dispatched * Time that is spend in the event handler on the JS side (event dispatch), or processing time Both of these are measured, and the corresponding fields are populated. Reviewed By: sammy-SC Differential Revision: D42294947 fbshipit-source-id: 4fd7938c04b942400befa4057d4929fb2763cee1
64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
/*
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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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#include "NativePerformanceObserver.h"
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#include "PerformanceEntryReporter.h"
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namespace facebook::react {
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static PerformanceEntryType stringToPerformanceEntryType(
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const std::string &entryType) {
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if (entryType == "mark") {
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return PerformanceEntryType::MARK;
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} else if (entryType == "measure") {
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return PerformanceEntryType::MEASURE;
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} else if (entryType == "event") {
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return PerformanceEntryType::EVENT;
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} else if (entryType == "first-input") {
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return PerformanceEntryType::FIRST_INPUT;
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} else {
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return PerformanceEntryType::UNDEFINED;
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}
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}
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NativePerformanceObserver::NativePerformanceObserver(
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std::shared_ptr<CallInvoker> jsInvoker)
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: NativePerformanceObserverCxxSpec(std::move(jsInvoker)) {
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setEventLogger(&PerformanceEntryReporter::getInstance());
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}
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NativePerformanceObserver::~NativePerformanceObserver() {
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setEventLogger(nullptr);
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}
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void NativePerformanceObserver::startReporting(
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jsi::Runtime &rt,
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std::string entryType) {
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PerformanceEntryReporter::getInstance().startReporting(
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stringToPerformanceEntryType(entryType));
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}
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void NativePerformanceObserver::stopReporting(
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jsi::Runtime &rt,
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std::string entryType) {
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PerformanceEntryReporter::getInstance().stopReporting(
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stringToPerformanceEntryType(entryType));
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}
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GetPendingEntriesResult NativePerformanceObserver::popPendingEntries(
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jsi::Runtime &rt) {
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return PerformanceEntryReporter::getInstance().popPendingEntries();
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}
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void NativePerformanceObserver::setOnPerformanceEntryCallback(
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jsi::Runtime &rt,
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std::optional<AsyncCallback<>> callback) {
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PerformanceEntryReporter::getInstance().setReportingCallback(callback);
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}
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} // namespace facebook::react
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