mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Samuel Susla
1b592631a7
Summary: Changelog: [internal] Current implementation of `AsynchronousEventBeat` dispatches lambdas through `RuntimeExecutor` regardless if it has done so previously. So if `AsynchronousEventBeat::induce` is called 30 times, it will dispatch 30 lambdas. In `AsynchronousEventBeatV2`, we make sure only single lambda is dispatched to `RuntimeExecutor` at a time. Reviewed By: mdvacca Differential Revision: D27940300 fbshipit-source-id: 2bad25c86315c1712b4a1da8c1d4702734cec70f
59 lines
1.5 KiB
C++
59 lines
1.5 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its 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 "AsynchronousEventBeatV2.h"
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#include <react/debug/react_native_assert.h>
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namespace facebook::react {
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AsynchronousEventBeatV2::AsynchronousEventBeatV2(
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RunLoopObserver::Unique uiRunLoopObserver,
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RuntimeExecutor runtimeExecutor)
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: EventBeat({}),
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uiRunLoopObserver_(std::move(uiRunLoopObserver)),
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runtimeExecutor_(std::move(runtimeExecutor)) {
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uiRunLoopObserver_->setDelegate(this);
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uiRunLoopObserver_->enable();
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}
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void AsynchronousEventBeatV2::activityDidChange(
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RunLoopObserver::Delegate const *delegate,
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RunLoopObserver::Activity) const noexcept {
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react_native_assert(delegate == this);
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induce();
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}
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void AsynchronousEventBeatV2::induce() const {
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if (!isRequested_ || isBeatCallbackScheduled_) {
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return;
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}
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isRequested_ = false;
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// Here we know that `this` object exists because the caller has a strong
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// pointer to `owner`. To ensure the object will exist inside
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// `runtimeExecutor_` callback, we need to copy the pointer there.
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auto weakOwner = uiRunLoopObserver_->getOwner();
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isBeatCallbackScheduled_ = true;
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runtimeExecutor_([this, weakOwner](jsi::Runtime &runtime) {
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isBeatCallbackScheduled_ = false;
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auto owner = weakOwner.lock();
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if (!owner) {
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return;
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}
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if (beatCallback_) {
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beatCallback_(runtime);
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}
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});
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}
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} // namespace facebook::react
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