| // 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 |
| #ifndef ROCKSDB_LITE |
| #include "port/port.h" |
| #include "rocksdb/slice_transform.h" |
| #include "rocksdb/memtablerep.h" |
| |
| namespace rocksdb { |
| |
| class HashCuckooRepFactory : public MemTableRepFactory { |
| public: |
| // maxinum number of hash functions used in the cuckoo hash. |
| static const unsigned int kMaxHashCount = 10; |
| |
| explicit HashCuckooRepFactory(size_t write_buffer_size, |
| size_t average_data_size, |
| unsigned int hash_function_count) |
| : write_buffer_size_(write_buffer_size), |
| average_data_size_(average_data_size), |
| hash_function_count_(hash_function_count) {} |
| |
| virtual ~HashCuckooRepFactory() {} |
| |
| using MemTableRepFactory::CreateMemTableRep; |
| virtual MemTableRep* CreateMemTableRep( |
| const MemTableRep::KeyComparator& compare, Allocator* allocator, |
| const SliceTransform* transform, Logger* logger) override; |
| |
| virtual const char* Name() const override { return "HashCuckooRepFactory"; } |
| |
| private: |
| size_t write_buffer_size_; |
| size_t average_data_size_; |
| const unsigned int hash_function_count_; |
| }; |
| } // namespace rocksdb |
| #endif // ROCKSDB_LITE |