4b95253587
Summary: Refactor cache.cc so that I can plugin clock cache (D55581). Mainly move `ShardedCache` to separate file, move `LRUHandle` back to cache.cc and rename it lru_cache.cc.
Test Plan:
make check -j64
Reviewers: lightmark, sdong
Reviewed By: sdong
Subscribers: andrewkr, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D59655
31 lines
964 B
C++
31 lines
964 B
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under the BSD-style license found in the
|
|
// LICENSE file in the root directory of this source tree. An additional grant
|
|
// of patent rights can be found in the PATENTS file in the same 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.
|
|
//
|
|
// Simple hash function used for internal data structures
|
|
|
|
#pragma once
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
#include "rocksdb/slice.h"
|
|
|
|
namespace rocksdb {
|
|
|
|
extern uint32_t Hash(const char* data, size_t n, uint32_t seed);
|
|
|
|
inline uint32_t BloomHash(const Slice& key) {
|
|
return Hash(key.data(), key.size(), 0xbc9f1d34);
|
|
}
|
|
|
|
inline uint32_t GetSliceHash(const Slice& s) {
|
|
return Hash(s.data(), s.size(), 397);
|
|
}
|
|
|
|
} // namespace rocksdb
|