mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Samuel Susla
a7bbc858c5
Summary: Changelog: [Internal] Using `empty()` vs `size() == 0` or `size() > 0`. It is a more semantic way to check whether container is empty or not. Reviewed By: JoshuaGross Differential Revision: D21573183 fbshipit-source-id: b83283f687432a037941852114717a0f014e28db
64 lines
1.6 KiB
C++
64 lines
1.6 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 "ShadowTreeRegistry.h"
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namespace facebook {
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namespace react {
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ShadowTreeRegistry::~ShadowTreeRegistry() {
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assert(
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registry_.empty() && "Deallocation of non-empty `ShadowTreeRegistry`.");
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}
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void ShadowTreeRegistry::add(std::unique_ptr<ShadowTree> &&shadowTree) const {
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std::unique_lock<better::shared_mutex> lock(mutex_);
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registry_.emplace(shadowTree->getSurfaceId(), std::move(shadowTree));
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}
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std::unique_ptr<ShadowTree> ShadowTreeRegistry::remove(
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SurfaceId surfaceId) const {
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std::unique_lock<better::shared_mutex> lock(mutex_);
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auto iterator = registry_.find(surfaceId);
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auto shadowTree = std::unique_ptr<ShadowTree>(iterator->second.release());
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registry_.erase(iterator);
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return shadowTree;
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}
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bool ShadowTreeRegistry::visit(
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SurfaceId surfaceId,
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std::function<void(const ShadowTree &shadowTree)> callback) const {
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std::shared_lock<better::shared_mutex> lock(mutex_);
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auto iterator = registry_.find(surfaceId);
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if (iterator == registry_.end()) {
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return false;
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}
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callback(*iterator->second);
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return true;
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}
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void ShadowTreeRegistry::enumerate(
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std::function<void(const ShadowTree &shadowTree, bool &stop)> callback)
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const {
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std::shared_lock<better::shared_mutex> lock(mutex_);
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bool stop = false;
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for (auto const &pair : registry_) {
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callback(*pair.second, stop);
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if (stop) {
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break;
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}
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}
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}
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} // namespace react
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} // namespace facebook
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