mirror of
https://github.com/facebook/rocksdb.git
synced 2024-11-30 13:41:46 +00:00
44 lines
1.6 KiB
C++
44 lines
1.6 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under the BSD-style license found in the
|
|
// LICENSE file in the root directory of this source tree. An additional grant
|
|
// of patent rights can be found in the PATENTS file in the same directory.
|
|
//
|
|
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file. See the AUTHORS file for names of contributors.
|
|
//
|
|
#pragma once
|
|
#include "rocksdb/env.h"
|
|
|
|
namespace rocksdb {
|
|
|
|
class TableCache;
|
|
class VersionStorageInfo;
|
|
class VersionEdit;
|
|
struct FileMetaData;
|
|
class InternalStats;
|
|
|
|
// A helper class so we can efficiently apply a whole sequence
|
|
// of edits to a particular state without creating intermediate
|
|
// Versions that contain full copies of the intermediate state.
|
|
class VersionBuilder {
|
|
public:
|
|
VersionBuilder(const EnvOptions& env_options, TableCache* table_cache,
|
|
VersionStorageInfo* base_vstorage, Logger* info_log = nullptr);
|
|
~VersionBuilder();
|
|
void CheckConsistency(VersionStorageInfo* vstorage);
|
|
void CheckConsistencyForDeletes(VersionEdit* edit, uint64_t number,
|
|
int level);
|
|
void Apply(VersionEdit* edit);
|
|
void SaveTo(VersionStorageInfo* vstorage);
|
|
void LoadTableHandlers(InternalStats* internal_stats, int max_threads = 1);
|
|
void MaybeAddFile(VersionStorageInfo* vstorage, int level, FileMetaData* f);
|
|
|
|
private:
|
|
class Rep;
|
|
Rep* rep_;
|
|
};
|
|
|
|
extern bool NewestFirstBySeqNo(FileMetaData* a, FileMetaData* b);
|
|
} // namespace rocksdb
|