YugabyteDB (2.13.0.0-b42, bfc6a6643e7399ac8a0e81d06a3ee6d6571b33ab)

//  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.

//  This source code is licensed under the BSD-style license found in the

//  LICENSE file in the root directory of this source tree. An additional grant

//  of patent rights can be found in the PATENTS file in the same directory.

//

// The following only applies to changes made to this file as part of YugaByte development.

//

// Portions Copyright (c) YugaByte, Inc.

//

// 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.

//

// Copyright (c) 2011 The LevelDB Authors. All rights reserved.

// Use of this source code is governed by a BSD-style license that can be

// found in the LICENSE file. See the AUTHORS file for names of contributors.

//

// Abstract interface for allocating memory in blocks. This memory is freed

// when the allocator object is destroyed. See the Arena class for more info.

#pragma once

#include <cstddef>

namespace rocksdb {

class Logger;

class Allocator {

 public:

  virtual ~Allocator() {}

  virtual char* Allocate(size_t bytes) = 0;

  virtual char* AllocateAligned(size_t bytes, size_t huge_page_size = 0,

                                Logger* logger = nullptr) = 0;

  virtual size_t BlockSize() const = 0;

};

}  // namespace rocksdb