diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
commit | e6918187568dbd01842d8d1d2c808ce16a894239 (patch) | |
tree | 64f88b554b444a49f656b6c656111a145cbbaa28 /src/rocksdb/util/hash128.h | |
parent | Initial commit. (diff) | |
download | ceph-upstream/18.2.2.tar.xz ceph-upstream/18.2.2.zip |
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/rocksdb/util/hash128.h')
-rw-r--r-- | src/rocksdb/util/hash128.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/rocksdb/util/hash128.h b/src/rocksdb/util/hash128.h new file mode 100644 index 000000000..305caa14a --- /dev/null +++ b/src/rocksdb/util/hash128.h @@ -0,0 +1,26 @@ +// 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 |