1// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file. See the AUTHORS file for names of contributors.
4
5#ifndef STORAGE_LEVELDB_TABLE_BLOCK_H_
6#define STORAGE_LEVELDB_TABLE_BLOCK_H_
7
8#include <stddef.h>
9#include <stdint.h>
10#include "leveldb/iterator.h"
11
12namespace leveldb {
13
14struct BlockContents;
15class Comparator;
16
17class Block {
18 public:
19  // Initialize the block with the specified contents.
20  explicit Block(const BlockContents& contents);
21
22  ~Block();
23
24  size_t size() const { return size_; }
25  Iterator* NewIterator(const Comparator* comparator);
26
27 private:
28  uint32_t NumRestarts() const;
29
30  const char* data_;
31  size_t size_;
32  uint32_t restart_offset_;     // Offset in data_ of restart array
33  bool owned_;                  // Block owns data_[]
34
35  // No copying allowed
36  Block(const Block&);
37  void operator=(const Block&);
38
39  class Iter;
40};
41
42}  // namespace leveldb
43
44#endif  // STORAGE_LEVELDB_TABLE_BLOCK_H_
45