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 <cstddef> |
9 | #include <cstdint> |
10 | |
11 | #include "leveldb/iterator.h" |
12 | |
13 | namespace leveldb { |
14 | |
15 | struct BlockContents; |
16 | class Comparator; |
17 | |
18 | class Block { |
19 | public: |
20 | // Initialize the block with the specified contents. |
21 | explicit Block(const BlockContents& contents); |
22 | |
23 | Block(const Block&) = delete; |
24 | Block& operator=(const Block&) = delete; |
25 | |
26 | ~Block(); |
27 | |
28 | size_t size() const { return size_; } |
29 | Iterator* NewIterator(const Comparator* comparator); |
30 | |
31 | private: |
32 | class Iter; |
33 | |
34 | uint32_t NumRestarts() const; |
35 | |
36 | const char* data_; |
37 | size_t size_; |
38 | uint32_t restart_offset_; // Offset in data_ of restart array |
39 | bool owned_; // Block owns data_[] |
40 | }; |
41 | |
42 | } // namespace leveldb |
43 | |
44 | #endif // STORAGE_LEVELDB_TABLE_BLOCK_H_ |
45 | |