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c674303dfd
Summary: @public `ContextContainer` is general purpose DI container for Fabric. We need this to communicate some enviroment-specific and/or platform-specific modules down to cross-platform C++ code. The first one will be ImageManager. Soon. Reviewed By: fkgozali Differential Revision: D8475636 fbshipit-source-id: 0afc65063f818d0bab736cd2c55c6fdd21b629ac
41 lines
896 B
C++
41 lines
896 B
C++
// Copyright (c) 2004-present, Facebook, Inc.
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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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#pragma once
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#include <memory>
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#include <mutex>
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#include <typeindex>
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#include <typeinfo>
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#include <unordered_map>
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namespace facebook {
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namespace react {
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class ContextContainer;
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using SharedContextContainer = std::shared_ptr<ContextContainer>;
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/*
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* General purpose dependecy injection container.
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*/
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class ContextContainer final {
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public:
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using ClassHandle = std::type_index;
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using SharedInstance = std::shared_ptr<void>;
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void registerInstance(const ClassHandle &handle, SharedInstance instance);
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const SharedInstance &at(const ClassHandle &handle) const;
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private:
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std::unordered_map<ClassHandle, SharedInstance> instances_;
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mutable std::mutex mutex_;
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};
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} // namespace react
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} // namespace facebook
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