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83 lines
2.2 KiB
83 lines
2.2 KiB
/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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#include "paddle/framework/scope.h"
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#include <memory> // for unique_ptr
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#include <mutex> // for call_once
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#include "paddle/string/printf.h"
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namespace paddle {
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namespace framework {
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Scope::~Scope() {
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DropKids();
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for (auto& kv : vars_) delete kv.second;
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}
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Scope& Scope::NewScope() const {
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kids_.push_back(new Scope(this));
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return *kids_.back();
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}
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Variable* Scope::NewVar(const std::string& name) {
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auto iter = vars_.find(name);
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if (iter != vars_.end()) {
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return iter->second;
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}
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Variable* v = new Variable();
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vars_[name] = v;
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v->name_ = &(vars_.find(name)->first);
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return v;
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}
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Variable* Scope::NewVar() {
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return NewVar(string::Sprintf("%p.%d", this, vars_.size()));
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}
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Variable* Scope::FindVar(const std::string& name) const {
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auto it = vars_.find(name);
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if (it != vars_.end()) return it->second;
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return (parent_ == nullptr) ? nullptr : parent_->FindVar(name);
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}
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const Scope* Scope::FindScope(const Variable* var) const {
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for (auto& kv : vars_) {
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if (kv.second == var) {
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return this;
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}
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}
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return (parent_ == nullptr) ? nullptr : parent_->FindScope(var);
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}
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void Scope::DropKids() {
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for (Scope* s : kids_) delete s;
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kids_.clear();
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}
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std::once_flag feed_variable_flag;
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template <typename T, typename... Args>
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std::unique_ptr<T> make_unique(Args&&... args) {
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return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
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}
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framework::Scope* GetScope() {
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static std::unique_ptr<framework::Scope> g_scope =
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make_unique<framework::Scope>();
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std::call_once(feed_variable_flag, [&]() { g_scope->NewVar("feed_value"); });
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return g_scope.get();
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}
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} // namespace framework
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} // namespace paddle
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