diff options
| author | Devtools Arcadia <arcadia-devtools@yandex-team.ru> | 2022-02-07 18:08:42 +0300 |
|---|---|---|
| committer | Devtools Arcadia <arcadia-devtools@mous.vla.yp-c.yandex.net> | 2022-02-07 18:08:42 +0300 |
| commit | 1110808a9d39d4b808aef724c861a2e1a38d2a69 (patch) | |
| tree | e26c9fed0de5d9873cce7e00bc214573dc2195b7 /util/generic/string_hash.h | |
| download | ydb-1110808a9d39d4b808aef724c861a2e1a38d2a69.tar.gz | |
intermediate changes
ref:cde9a383711a11544ce7e107a78147fb96cc4029
Diffstat (limited to 'util/generic/string_hash.h')
| -rw-r--r-- | util/generic/string_hash.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/util/generic/string_hash.h b/util/generic/string_hash.h new file mode 100644 index 0000000000..b949c7a2d9 --- /dev/null +++ b/util/generic/string_hash.h @@ -0,0 +1,21 @@ +#pragma once + +#include <cstddef> + +// reduce code bloat and cycled includes, declare functions here +#if defined(_64_) && !defined(NO_CITYHASH) +ui64 CityHash64(const char* buf, size_t len) noexcept; +#else +size_t MurmurHashSizeT(const char* buf, size_t len) noexcept; +#endif + +namespace NHashPrivate { + template <typename C> + size_t ComputeStringHash(const C* ptr, size_t size) noexcept { +#if defined(_64_) && !defined(NO_CITYHASH) + return CityHash64((const char*)ptr, size * sizeof(C)); +#else + return MurmurHashSizeT((const char*)ptr, size * sizeof(C)); +#endif + } +} |