forked from huawei/mindspore2022
69 lines
1.9 KiB
C++
69 lines
1.9 KiB
C++
/**
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* Copyright 2019 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 IR_SCOPE_H_
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#define IR_SCOPE_H_
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#include <string>
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#include <memory>
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#include <stack>
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namespace mindspore {
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class Scope;
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using ScopePtr = std::shared_ptr<Scope>;
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extern const ScopePtr kDefaultScope;
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class Scope {
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public:
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// using the default scope
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explicit Scope(const std::string &name) : name_(name) {}
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~Scope() = default;
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std::string name() { return name_; }
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std::string name_;
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};
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class ScopeManager {
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public:
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static ScopeManager &GetInstance() noexcept {
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static ScopeManager instance;
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return instance;
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}
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ScopeManager(const ScopeManager &) = delete;
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ScopeManager &operator=(const ScopeManager &) = delete;
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~ScopeManager() = default;
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void EnterScope(const ScopePtr &scope);
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void LeaveScope(const ScopePtr &scope) noexcept;
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ScopePtr GetCurrentScope();
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void ClearScope();
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private:
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ScopeManager() = default;
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std::stack<ScopePtr> scope_stack_;
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};
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// ScopeGuard is a class that help generate the anf node of specified scope
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// in the current c++ action scope.
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class ScopeGuard {
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public:
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explicit ScopeGuard(const ScopePtr &scope) {
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scope_ = scope;
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ScopeManager::GetInstance().EnterScope(scope);
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}
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~ScopeGuard() { ScopeManager::GetInstance().LeaveScope(scope_); }
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private:
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ScopePtr scope_;
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};
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} // namespace mindspore
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#endif // IR_SCOPE_H_
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