mirror of
https://github.com/facebook/rocksdb.git
synced 2024-11-27 11:43:49 +00:00
7fff38b1fe
Summary: This is purely the result of running `clang-format -i` on files, except some files have been excluded for manual intervention in a separate PR Pull Request resolved: https://github.com/facebook/rocksdb/pull/10867 Test Plan: `make check`, `make check-headers`, `make format` Reviewed By: jay-zhuang Differential Revision: D40682086 Pulled By: pdillinger fbshipit-source-id: 8673d978553ab99b516da7fb63ba0b82523337f8
44 lines
1.3 KiB
C++
44 lines
1.3 KiB
C++
// 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).
|
|
//
|
|
/*
|
|
Murmurhash from http://sites.google.com/site/murmurhash/
|
|
|
|
All code is released to the public domain. For business purposes, Murmurhash
|
|
is under the MIT license.
|
|
*/
|
|
#pragma once
|
|
#include <stdint.h>
|
|
|
|
#include "rocksdb/slice.h"
|
|
|
|
#if defined(__x86_64__)
|
|
#define MURMUR_HASH MurmurHash64A
|
|
uint64_t MurmurHash64A(const void* key, int len, unsigned int seed);
|
|
#define MurmurHash MurmurHash64A
|
|
using murmur_t = uint64_t;
|
|
|
|
#elif defined(__i386__)
|
|
#define MURMUR_HASH MurmurHash2
|
|
unsigned int MurmurHash2(const void* key, int len, unsigned int seed);
|
|
#define MurmurHash MurmurHash2
|
|
using murmur_t = unsigned int;
|
|
|
|
#else
|
|
#define MURMUR_HASH MurmurHashNeutral2
|
|
unsigned int MurmurHashNeutral2(const void* key, int len, unsigned int seed);
|
|
#define MurmurHash MurmurHashNeutral2
|
|
using murmur_t = unsigned int;
|
|
#endif
|
|
|
|
// Allow slice to be hashable by murmur hash.
|
|
namespace ROCKSDB_NAMESPACE {
|
|
struct murmur_hash {
|
|
size_t operator()(const Slice& slice) const {
|
|
return MurmurHash(slice.data(), static_cast<int>(slice.size()), 0);
|
|
}
|
|
};
|
|
} // namespace ROCKSDB_NAMESPACE
|