59 lines
1.5 KiB
C++
59 lines
1.5 KiB
C++
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/*
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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 "AsynchronousEventBeat.h"
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#include <react/debug/react_native_assert.h>
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namespace facebook::react {
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AsynchronousEventBeat::AsynchronousEventBeat(
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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 AsynchronousEventBeat::activityDidChange(
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RunLoopObserver::Delegate const *delegate,
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RunLoopObserver::Activity /*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 AsynchronousEventBeat::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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