d169b67680
Summary: In PlainTable, use one single byte to represent 8 bytes of internal bytes, if seqID = 0 and it is value type (which should be common for bottom most files). It is to save 7 bytes for uncompressed cases. Test Plan: make all check Reviewers: haobo, dhruba, kailiu Reviewed By: haobo CC: igor, leveldb Differential Revision: https://reviews.facebook.net/D15489
46 lines
1.8 KiB
C++
46 lines
1.8 KiB
C++
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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// 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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#pragma once
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#include "rocksdb/comparator.h"
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#include "rocksdb/status.h"
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#include "rocksdb/types.h"
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#include "rocksdb/options.h"
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namespace rocksdb {
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struct Options;
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struct FileMetaData;
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class Env;
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struct EnvOptions;
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class Iterator;
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class TableCache;
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class VersionEdit;
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class TableBuilder;
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class WritableFile;
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extern TableBuilder* NewTableBuilder(
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const Options& options, const InternalKeyComparator& internal_comparator,
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WritableFile* file, CompressionType compression_type);
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// Build a Table file from the contents of *iter. The generated file
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// will be named according to meta->number. On success, the rest of
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// *meta will be filled with metadata about the generated table.
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// If no data is present in *iter, meta->file_size will be set to
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// zero, and no Table file will be produced.
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extern Status BuildTable(const std::string& dbname, Env* env,
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const Options& options, const EnvOptions& soptions,
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TableCache* table_cache, Iterator* iter,
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FileMetaData* meta,
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const InternalKeyComparator& internal_comparator,
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const SequenceNumber newest_snapshot,
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const SequenceNumber earliest_seqno_in_memtable,
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const CompressionType compression);
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} // namespace rocksdb
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