YugabyteDB (2.13.0.0-b42, bfc6a6643e7399ac8a0e81d06a3ee6d6571b33ab)

//  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.

//

// The following only applies to changes made to this file as part of YugaByte development.

//

// Portions Copyright (c) YugaByte, Inc.

//

// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except

// in compliance with the License.  You may obtain a copy of the License at

//

// http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing, software distributed under the License

// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express

// or implied.  See the License for the specific language governing permissions and limitations

// under the License.

//

/*

  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 "yb/util/slice.h"

#if defined(__x86_64__)

#define MURMUR_HASH MurmurHash64A

uint64_t MurmurHash64A ( const void * key, int len, unsigned int seed );

#define MurmurHash MurmurHash64A

typedef uint64_t murmur_t;

#elif defined(__i386__)

#define MURMUR_HASH MurmurHash2

unsigned int MurmurHash2 ( const void * key, int len, unsigned int seed );

#define MurmurHash MurmurHash2

typedef unsigned int murmur_t;

#else

#define MURMUR_HASH MurmurHashNeutral2

unsigned int MurmurHashNeutral2 ( const void * key, int len, unsigned int seed );

#define MurmurHash MurmurHashNeutral2

typedef unsigned int murmur_t;

#endif

// Allow slice to be hashable by murmur hash.

namespace rocksdb {

struct murmur_hash {

  size_t operator()(const Slice& slice) const {

    return MurmurHash(slice.data(), static_cast<int>(slice.size()), 0);

  }

};

}  // rocksdb