Line data    Source code

       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             : 
      12             : namespace leveldb {
      13             : 
      14             : struct BlockContents;
      15             : class Comparator;
      16             : 
      17             : class Block {
      18             :  public:
      19             :   // Initialize the block with the specified contents.
      20             :   explicit Block(const BlockContents& contents);
      21             : 
      22             :   ~Block();
      23             : 
      24           0 :   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_