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  
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_