mirror of https://github.com/facebook/rocksdb.git
27 lines
838 B
C++
27 lines
838 B
C++
// Copyright (c) Facebook, Inc. and its affiliates. 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).
|
|
|
|
#pragma once
|
|
|
|
// 128-bit hash gets it own header so that more popular hash.h doesn't
|
|
// depend on math128.h
|
|
|
|
#include "rocksdb/slice.h"
|
|
#include "util/math128.h"
|
|
|
|
namespace ROCKSDB_NAMESPACE {
|
|
|
|
// Stable/persistent 128-bit hash for non-cryptographic applications.
|
|
Unsigned128 Hash128(const char* data, size_t n, uint64_t seed);
|
|
|
|
// Specific optimization without seed (same as seed = 0)
|
|
Unsigned128 Hash128(const char* data, size_t n);
|
|
|
|
inline Unsigned128 GetSliceHash128(const Slice& key) {
|
|
return Hash128(key.data(), key.size());
|
|
}
|
|
|
|
} // namespace ROCKSDB_NAMESPACE
|