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packages/react-native/ReactCommon/react/bridging/LongLivedObject.cpp
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Fabrizio Cucci
Synchronize access to LongLivedObjectCollection instances (#43450)
12 мар 2024, 23:18
12 мар 2024, 23:18
41b6371
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/* * Copyright (c) Meta Platforms, Inc. and affiliates. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. */ #include "LongLivedObject.h" #include <unordered_map> namespace facebook::react { // LongLivedObjectCollection LongLivedObjectCollection& LongLivedObjectCollection::get( jsi::Runtime& runtime) { static std::unordered_map<void*, std::shared_ptr<LongLivedObjectCollection>> instances; static std::mutex instancesMutex; std::scoped_lock lock(instancesMutex); void* key = static_cast<void*>(&runtime); auto entry = instances.find(key); if (entry == instances.end()) { entry = instances.emplace(key, std::make_shared<LongLivedObjectCollection>()) .first; } return *(entry->second); } void LongLivedObjectCollection::add(std::shared_ptr<LongLivedObject> so) { std::scoped_lock lock(collectionMutex_); collection_.insert(std::move(so)); } void LongLivedObjectCollection::remove(const LongLivedObject* o) { std::scoped_lock lock(collectionMutex_); for (auto p = collection_.begin(); p != collection_.end(); p++) { if (p->get() == o) { collection_.erase(p); break; } } } void LongLivedObjectCollection::clear() { std::scoped_lock lock(collectionMutex_); collection_.clear(); } size_t LongLivedObjectCollection::size() const { std::scoped_lock lock(collectionMutex_); return collection_.size(); } // LongLivedObject void LongLivedObject::allowRelease() { LongLivedObjectCollection::get(runtime_).remove(this); } } // namespace facebook::react