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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
commit | e6918187568dbd01842d8d1d2c808ce16a894239 (patch) | |
tree | 64f88b554b444a49f656b6c656111a145cbbaa28 /src/rocksdb/db/version_builder.h | |
parent | Initial commit. (diff) | |
download | ceph-upstream/18.2.2.tar.xz ceph-upstream/18.2.2.zip |
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/rocksdb/db/version_builder.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/rocksdb/db/version_builder.h b/src/rocksdb/db/version_builder.h new file mode 100644 index 000000000..1c022832a --- /dev/null +++ b/src/rocksdb/db/version_builder.h @@ -0,0 +1,72 @@ +// 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 <memory> + +#include "rocksdb/file_system.h" +#include "rocksdb/slice_transform.h" + +namespace ROCKSDB_NAMESPACE { + +struct ImmutableCFOptions; +class TableCache; +class VersionStorageInfo; +class VersionEdit; +struct FileMetaData; +class InternalStats; +class Version; +class VersionSet; +class ColumnFamilyData; +class CacheReservationManager; + +// 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 FileOptions& file_options, + const ImmutableCFOptions* ioptions, TableCache* table_cache, + VersionStorageInfo* base_vstorage, VersionSet* version_set, + std::shared_ptr<CacheReservationManager> + file_metadata_cache_res_mgr = nullptr); + ~VersionBuilder(); + + bool CheckConsistencyForNumLevels(); + Status Apply(const VersionEdit* edit); + Status SaveTo(VersionStorageInfo* vstorage) const; + Status LoadTableHandlers( + InternalStats* internal_stats, int max_threads, + bool prefetch_index_and_filter_in_cache, bool is_initial_load, + const std::shared_ptr<const SliceTransform>& prefix_extractor, + size_t max_file_size_for_l0_meta_pin); + uint64_t GetMinOldestBlobFileNumber() const; + + private: + class Rep; + std::unique_ptr<Rep> rep_; +}; + +// A wrapper of version builder which references the current version in +// constructor and unref it in the destructor. +// Both of the constructor and destructor need to be called inside DB Mutex. +class BaseReferencedVersionBuilder { + public: + explicit BaseReferencedVersionBuilder(ColumnFamilyData* cfd); + BaseReferencedVersionBuilder(ColumnFamilyData* cfd, Version* v); + ~BaseReferencedVersionBuilder(); + VersionBuilder* version_builder() const { return version_builder_.get(); } + + private: + std::unique_ptr<VersionBuilder> version_builder_; + Version* version_; +}; + +} // namespace ROCKSDB_NAMESPACE |