49fbd5531b
Summary: In table.cc, the code section that reads in BlockContent and then put it into a Block, appears at least 4 times. This is too much duplication. BlockReader is much shorter after the change and reads way better. D10077 attempted that for index block read. This is a complete cleanup. Test Plan: make check; ./db_stress Reviewers: dhruba, sheki Reviewed By: dhruba CC: leveldb Differential Revision: https://reviews.facebook.net/D10527
47 lines
1.1 KiB
C++
47 lines
1.1 KiB
C++
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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#ifndef STORAGE_LEVELDB_TABLE_BLOCK_H_
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#define STORAGE_LEVELDB_TABLE_BLOCK_H_
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#include <stddef.h>
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#include <stdint.h>
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#include "leveldb/iterator.h"
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namespace leveldb {
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struct BlockContents;
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class Comparator;
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class Block {
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public:
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// Initialize the block with the specified contents.
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explicit Block(const BlockContents& contents);
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~Block();
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size_t size() const { return size_; }
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bool isCachable() const { return cachable_; }
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Iterator* NewIterator(const Comparator* comparator);
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private:
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uint32_t NumRestarts() const;
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const char* data_;
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size_t size_;
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uint32_t restart_offset_; // Offset in data_ of restart array
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bool owned_; // Block owns data_[]
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bool cachable_;
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// No copying allowed
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Block(const Block&);
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void operator=(const Block&);
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class Iter;
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};
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} // namespace leveldb
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#endif // STORAGE_LEVELDB_TABLE_BLOCK_H_
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