ceph/src/rocksdb/memtable/hash_skiplist_rep.h

   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 // Copyright (c) 2011 The LevelDB Authors. All rights reserved.
   6 // Use of this source code is governed by a BSD-style license that can be
   7 // found in the LICENSE file. See the AUTHORS file for names of contributors.
   8
   9 #pragma once
  10 #ifndef ROCKSDB_LITE
  11 #include "rocksdb/slice_transform.h"
  12 #include "rocksdb/memtablerep.h"
  13
  14 namespace ROCKSDB_NAMESPACE {
  15
  16 class HashSkipListRepFactory : public MemTableRepFactory {
  17  public:
  18   explicit HashSkipListRepFactory(
  19     size_t bucket_count,
  20     int32_t skiplist_height,
  21     int32_t skiplist_branching_factor)
  22       : bucket_count_(bucket_count),
  23         skiplist_height_(skiplist_height),
  24         skiplist_branching_factor_(skiplist_branching_factor) { }
  25
  26   virtual ~HashSkipListRepFactory() {}
  27
  28   using MemTableRepFactory::CreateMemTableRep;
  29   virtual MemTableRep* CreateMemTableRep(
  30       const MemTableRep::KeyComparator& compare, Allocator* allocator,
  31       const SliceTransform* transform, Logger* logger) override;
  32
  33   virtual const char* Name() const override {
  34     return "HashSkipListRepFactory";
  35   }
  36
  37  private:
  38   const size_t bucket_count_;
  39   const int32_t skiplist_height_;
  40   const int32_t skiplist_branching_factor_;
  41 };
  42
  43 }  // namespace ROCKSDB_NAMESPACE
  44 #endif  // ROCKSDB_LITE