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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| // Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| #pragma once | ||
|
|
||
| namespace paddle { | ||
| namespace distributed { | ||
|
|
||
| template <typename KeyT, typename ValueT> | ||
| class GlobalMap final { | ||
| public: | ||
| static ValueT* Get(KeyT id) { | ||
| ValueT* item = GetPPtr(id)->get(); | ||
| PADDLE_ENFORCE_NOT_NULL( | ||
| item, platform::errors::NotFound("This value is not in global map.")); | ||
| return item; | ||
| } | ||
| template <typename... Args> | ||
| static ValueT* Create(KeyT id, Args&&... args) { | ||
| auto* ptr = GetPPtr(id); | ||
| PADDLE_ENFORCE_EQ(ptr->get(), nullptr, | ||
| platform::errors::AlreadyExists( | ||
| "This value has already in global map.")); | ||
| ValueT* item = new ValueT(std::forward<Args>(args)...); | ||
| ptr->reset(item); | ||
| return item; | ||
| } | ||
|
|
||
| private: | ||
| static std::unique_ptr<ValueT>* GetPPtr(KeyT id) { | ||
| static std::mutex mutex; | ||
| static std::unordered_map<KeyT, std::unique_ptr<ValueT>> id_to_ptr; | ||
| std::unique_lock<std::mutex> lock(mutex); | ||
| return &id_to_ptr[id]; | ||
| } | ||
| }; | ||
| } // namespace distributed | ||
| } // namespace paddle |
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