forked from huawei/mindspore2022
86 lines
2.5 KiB
C++
86 lines
2.5 KiB
C++
/**
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* Copyright 2020 Huawei Technologies Co., Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef MINDSPORE_CCSRC_CXX_API_FACTORY_H
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#define MINDSPORE_CCSRC_CXX_API_FACTORY_H
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#include <functional>
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#include <map>
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#include <string>
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#include <vector>
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#include <memory>
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#include <utility>
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#include "utils/utils.h"
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namespace mindspore {
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inline std::string g_device_target = "Default";
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template <class T>
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class Factory {
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using U = std::function<std::shared_ptr<T>()>;
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public:
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Factory(const Factory &) = delete;
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void operator=(const Factory &) = delete;
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static Factory &Instance() {
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static Factory instance;
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return instance;
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}
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void Register(const std::string &device_name, U &&creator) {
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if (creators_.find(device_name) == creators_.end()) {
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(void)creators_.emplace(device_name, creator);
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}
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}
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bool CheckModelSupport(const std::string &device_name) {
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return std::any_of(creators_.begin(), creators_.end(),
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[&device_name](const std::pair<std::string, U> &item) { return item.first == device_name; });
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}
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std::shared_ptr<T> Create(const std::string &device_name) {
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auto iter = creators_.find(device_name);
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if (creators_.end() != iter) {
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MS_EXCEPTION_IF_NULL(iter->second);
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return (iter->second)();
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}
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MS_LOG(ERROR) << "Unsupported device target " << device_name;
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return nullptr;
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}
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private:
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Factory() = default;
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~Factory() = default;
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std::map<std::string, U> creators_;
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};
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template <class T>
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class Registrar {
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using U = std::function<std::shared_ptr<T>()>;
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public:
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Registrar(const std::string &device_name, U creator) {
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Factory<T>::Instance().Register(device_name, std::move(creator));
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}
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~Registrar() = default;
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};
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#define API_FACTORY_REG(BASE_CLASS, DEVICE_NAME, DERIVE_CLASS) \
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static const Registrar<BASE_CLASS> g_api_##DERIVE_CLASS##_registrar_##DEVICE_NAME##_reg( \
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#DEVICE_NAME, []() { return std::make_shared<DERIVE_CLASS>(); });
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} // namespace mindspore
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#endif // MINDSPORE_CCSRC_CXX_API_FACTORY_H
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