text: // Copyright (c) 2018 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
  #include <stdint.h>
  #include <algorithm>
  #include <mutex>  // NOLINT
  #include <unordered_map>
  #include <utility>
  #include <vector>
  
  #include "paddle/fluid/memory/allocation/allocator.h"
  #include "paddle/fluid/platform/place.h"
  
  namespace paddle {
  namespace memory {
  namespace allocation {
  
  class NaiveBestFitAllocator : public Allocator {
   public:
    explicit NaiveBestFitAllocator(const platform::Place &p) : place_(p) {}
  
    bool IsAllocThreadSafe() const override { return true; }
  
   protected:
    pten::Allocation *AllocateImpl(size_t size) override;
    void FreeImpl(pten::Allocation *allocation) override;
    uint64_t ReleaseImpl(const platform::Place &place) override;
  
   private:
    platform::Place place_;
  };
  
  }  // namespace allocation
  }  // namespace memory
  }  // namespace paddle
  