diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
commit | 19fcec84d8d7d21e796c7624e521b60d28ee21ed (patch) | |
tree | 42d26aa27d1e3f7c0b8bd3fd14e7d7082f5008dc /src/rocksdb/utilities/merge_operators/sortlist.h | |
parent | Initial commit. (diff) | |
download | ceph-19fcec84d8d7d21e796c7624e521b60d28ee21ed.tar.xz ceph-19fcec84d8d7d21e796c7624e521b60d28ee21ed.zip |
Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/rocksdb/utilities/merge_operators/sortlist.h')
-rw-r--r-- | src/rocksdb/utilities/merge_operators/sortlist.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/rocksdb/utilities/merge_operators/sortlist.h b/src/rocksdb/utilities/merge_operators/sortlist.h new file mode 100644 index 000000000..5e08bd583 --- /dev/null +++ b/src/rocksdb/utilities/merge_operators/sortlist.h @@ -0,0 +1,38 @@ +// 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). + +// A MergeOperator for RocksDB that implements Merge Sort. +// It is built using the MergeOperator interface. The operator works by taking +// an input which contains one or more merge operands where each operand is a +// list of sorted ints and merges them to form a large sorted list. +#pragma once + +#include "rocksdb/merge_operator.h" +#include "rocksdb/slice.h" + +namespace ROCKSDB_NAMESPACE { + +class SortList : public MergeOperator { + public: + bool FullMergeV2(const MergeOperationInput& merge_in, + MergeOperationOutput* merge_out) const override; + + bool PartialMerge(const Slice& /*key*/, const Slice& left_operand, + const Slice& right_operand, std::string* new_value, + Logger* /*logger*/) const override; + + bool PartialMergeMulti(const Slice& key, + const std::deque<Slice>& operand_list, + std::string* new_value, Logger* logger) const override; + + const char* Name() const override; + + void MakeVector(std::vector<int>& operand, Slice slice) const; + + private: + std::vector<int> Merge(std::vector<int>& left, std::vector<int>& right) const; +}; + +} // namespace ROCKSDB_NAMESPACE |