ceph/src/rocksdb/table/bloom_block.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 #pragma once
   6
   7 #include <vector>
   8 #include <string>
   9 #include "util/dynamic_bloom.h"
  10
  11 namespace rocksdb {
  12 class Logger;
  13
  14 class BloomBlockBuilder {
  15  public:
  16   static const std::string kBloomBlock;
  17
  18   explicit BloomBlockBuilder(uint32_t num_probes = 6) : bloom_(num_probes) {}
  19
  20   void SetTotalBits(Allocator* allocator, uint32_t total_bits,
  21                     uint32_t locality, size_t huge_page_tlb_size,
  22                     Logger* logger) {
  23     bloom_.SetTotalBits(allocator, total_bits, locality, huge_page_tlb_size,
  24                         logger);
  25   }
  26
  27   uint32_t GetNumBlocks() const { return bloom_.GetNumBlocks(); }
  28
  29   void AddKeysHashes(const std::vector<uint32_t>& keys_hashes);
  30
  31   Slice Finish();
  32
  33  private:
  34   DynamicBloom bloom_;
  35 };
  36
  37 };  // namespace rocksdb