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.

#include "yb/rocksdb/db/memtable_allocator.h"

#include <assert.h>

#include "yb/rocksdb/db/writebuffer.h"

namespace rocksdb {

MemTableAllocator::MemTableAllocator(Allocator* allocator,

                                     WriteBuffer* write_buffer)

    : allocator_(allocator), write_buffer_(write_buffer), bytes_allocated_(0) {}

MemTableAllocator::~MemTableAllocator() { DoneAllocating(); }

char* MemTableAllocator::Allocate(size_t bytes) {

  assert(write_buffer_ != nullptr);

  bytes_allocated_.fetch_add(bytes, std::memory_order_relaxed);

  write_buffer_->ReserveMem(bytes);

  return allocator_->Allocate(bytes);

}

char* MemTableAllocator::AllocateAligned(size_t bytes, size_t huge_page_size,

                                         Logger* logger) {

  assert(write_buffer_ != nullptr);

  bytes_allocated_.fetch_add(bytes, std::memory_order_relaxed);

  write_buffer_->ReserveMem(bytes);

  return allocator_->AllocateAligned(bytes, huge_page_size, logger);

}

void MemTableAllocator::DoneAllocating() {

  if (write_buffer_ != nullptr) {

    write_buffer_->FreeMem(bytes_allocated_.load(std::memory_order_relaxed));

    write_buffer_ = nullptr;

  }

}

size_t MemTableAllocator::BlockSize() const { return allocator_->BlockSize(); }

}  // namespace rocksdb