1 //  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
2 //  This source code is licensed under both the GPLv2 (found in the
3 //  COPYING file in the root directory) and Apache 2.0 License
4 //  (found in the LICENSE.Apache file in the root directory).
5 //
6 // Copyright (c) 2011 The LevelDB Authors. All rights reserved.
7 // Use of this source code is governed by a BSD-style license that can be
8 // found in the LICENSE file. See the AUTHORS file for names of contributors.
9 
10 #pragma once
11 #ifndef ROCKSDB_LITE
12 
13 #include "db/compaction/compaction_picker.h"
14 
15 namespace ROCKSDB_NAMESPACE {
16 class UniversalCompactionPicker : public CompactionPicker {
17  public:
UniversalCompactionPicker(const ImmutableOptions & ioptions,const InternalKeyComparator * icmp)18   UniversalCompactionPicker(const ImmutableOptions& ioptions,
19                             const InternalKeyComparator* icmp)
20       : CompactionPicker(ioptions, icmp) {}
21   virtual Compaction* PickCompaction(
22       const std::string& cf_name, const MutableCFOptions& mutable_cf_options,
23       const MutableDBOptions& mutable_db_options, VersionStorageInfo* vstorage,
24       LogBuffer* log_buffer,
25       SequenceNumber earliest_memtable_seqno = kMaxSequenceNumber) override;
MaxOutputLevel()26   virtual int MaxOutputLevel() const override { return NumberLevels() - 1; }
27 
28   virtual bool NeedsCompaction(
29       const VersionStorageInfo* vstorage) const override;
30 };
31 }  // namespace ROCKSDB_NAMESPACE
32 #endif  // !ROCKSDB_LITE
33