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d150cbc298
Summary: `ShadowTree` class is already thread-safe, so we don't need to (we should not) guard concurent access to it. We should guard concurrent write-access to the collection of them though. Note that unordered_map is "thread-compatible" collection, so concurrent reading access is okay. Reviewed By: mdvacca Differential Revision: D13269745 fbshipit-source-id: 4779626018da0e42b81a835e538f6c1d1a8e25f7
44 lines
1.1 KiB
C++
44 lines
1.1 KiB
C++
// Copyright (c) Facebook, Inc. and its affiliates.
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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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#include "ShadowTreeRegistry.h"
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namespace facebook {
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namespace react {
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void ShadowTreeRegistry::add(std::unique_ptr<ShadowTree> &&shadowTree) const {
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std::unique_lock<folly::SharedMutex> 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<folly::SharedMutex> 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::get(
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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<folly::SharedMutex> 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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} // namespace react
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} // namespace facebook
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