ceph/src/rocksdb/memtable/stl_wrappers.h

   1 //  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
   2 //  This source code is licensed under the BSD-style license found in the
   3 //  LICENSE file in the root directory of this source tree. An additional grant
   4 //  of patent rights can be found in the PATENTS file in the same directory.
   5 #pragma once
   6
   7 #include <map>
   8 #include <string>
   9
  10 #include "rocksdb/comparator.h"
  11 #include "rocksdb/memtablerep.h"
  12 #include "rocksdb/slice.h"
  13 #include "util/coding.h"
  14 #include "util/murmurhash.h"
  15
  16 namespace rocksdb {
  17 namespace stl_wrappers {
  18
  19 class Base {
  20  protected:
  21   const MemTableRep::KeyComparator& compare_;
  22   explicit Base(const MemTableRep::KeyComparator& compare)
  23       : compare_(compare) {}
  24 };
  25
  26 struct Compare : private Base {
  27   explicit Compare(const MemTableRep::KeyComparator& compare) : Base(compare) {}
  28   inline bool operator()(const char* a, const char* b) const {
  29     return compare_(a, b) < 0;
  30   }
  31 };
  32
  33 }
  34 }