mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Ruslan Shestopalyuk
e2c4941c80
Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/35525 [Changelog][Internal] Adds ability to invoke an async JS callback from a C++ native module, as a task with priority. This will allow native modules to schedule less important calls to JS thread with lower priority. One example use case is feeding collected perf metrics back to JS. Reviewed By: javache Differential Revision: D41492849 fbshipit-source-id: 12f738557972dc23398d9bb9a7a01125c79da070
53 lines
1.4 KiB
C++
53 lines
1.4 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 "RuntimeScheduler.h"
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namespace facebook::react {
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Task::Task(
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SchedulerPriority priority,
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jsi::Function callback,
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std::chrono::steady_clock::time_point expirationTime)
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: priority(priority),
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callback(std::move(callback)),
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expirationTime(expirationTime) {}
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Task::Task(
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SchedulerPriority priority,
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RawCallback callback,
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std::chrono::steady_clock::time_point expirationTime)
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: priority(priority),
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callback(std::move(callback)),
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expirationTime(expirationTime) {}
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jsi::Value Task::execute(jsi::Runtime &runtime, bool didUserCallbackTimeout) {
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auto result = jsi::Value::undefined();
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// Canceled task doesn't have a callback.
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if (!callback) {
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return result;
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}
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auto &cbVal = callback.value();
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if (cbVal.index() == 0) {
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// Callback in JavaScript is expecting a single bool parameter.
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// React team plans to remove it in the future when a scheduler bug on web
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// is resolved.
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result =
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std::get<jsi::Function>(cbVal).call(runtime, {didUserCallbackTimeout});
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} else {
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// Calling a raw callback
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std::get<RawCallback>(cbVal)(runtime);
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}
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// Destroying callback to prevent calling it twice.
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callback.reset();
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return result;
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}
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} // namespace facebook::react
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