mirror of https://github.com/facebook/rocksdb.git
49 lines
1.8 KiB
C++
49 lines
1.8 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under both the GPLv2 (found in the
|
|
// COPYING file in the root directory) and Apache 2.0 License
|
|
// (found in the LICENSE.Apache file in the root 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"
|
|
#include "rocksdb/slice_transform.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();
|
|
Status CheckConsistency(VersionStorageInfo* vstorage);
|
|
Status CheckConsistencyForDeletes(VersionEdit* edit, uint64_t number,
|
|
int level);
|
|
bool CheckConsistencyForNumLevels();
|
|
Status Apply(VersionEdit* edit);
|
|
Status SaveTo(VersionStorageInfo* vstorage);
|
|
Status LoadTableHandlers(InternalStats* internal_stats, int max_threads,
|
|
bool prefetch_index_and_filter_in_cache,
|
|
bool is_initial_load,
|
|
const SliceTransform* prefix_extractor);
|
|
void MaybeAddFile(VersionStorageInfo* vstorage, int level, FileMetaData* f);
|
|
|
|
private:
|
|
class Rep;
|
|
Rep* rep_;
|
|
};
|
|
|
|
extern bool NewestFirstBySeqNo(FileMetaData* a, FileMetaData* b);
|
|
} // namespace rocksdb
|