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62 lines
1.5 KiB
62 lines
1.5 KiB
9 years ago
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/* Copyright (c) 2016 Baidu, Inc. 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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#pragma once
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#include <memory>
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#include <mutex>
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#include <vector>
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#include <unordered_map>
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#include "Allocator.h"
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namespace paddle {
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/**
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* @brief Memory pool allocator implementation.
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*/
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class PoolAllocator {
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public:
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/**
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* @brief constructor.
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* @param allocator a Allocator object.
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* @param sizeLimit The maximum size memory can be managed,
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* if sizeLimit == 0, the pool allocator is a simple wrapper of allocator.
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*/
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PoolAllocator(Allocator* allocator,
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size_t sizeLimit = 0,
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const std::string& name = "pool");
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/**
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* @brief destructor.
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*/
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~PoolAllocator();
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void* alloc(size_t size);
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void free(void* ptr, size_t size);
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std::string getName() { return name_; }
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private:
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void freeAll();
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void printAll();
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std::unique_ptr<Allocator> allocator_;
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std::mutex mutex_;
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std::unordered_map<size_t, std::vector<void*>> pool_;
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size_t sizeLimit_;
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size_t poolMemorySize_;
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std::string name_;
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};
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} // namespace paddle
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