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authorkhvostikovao <khvostikovao@yandex-team.ru>2022-02-10 16:52:06 +0300
committerDaniil Cherednik <dcherednik@yandex-team.ru>2022-02-10 16:52:06 +0300
commit06189cb2ee513c85b125b5bd1c879a5a4f05ca77 (patch)
treeb1d025e74b437ef31f6dcfde01766663c842197b /util/generic/guid.cpp
parente1eef5fd2ea964227b9be2c182415857c35e1290 (diff)
downloadydb-06189cb2ee513c85b125b5bd1c879a5a4f05ca77.tar.gz
Restoring authorship annotation for <khvostikovao@yandex-team.ru>. Commit 1 of 2.
Diffstat (limited to 'util/generic/guid.cpp')
-rw-r--r--util/generic/guid.cpp34
1 files changed, 17 insertions, 17 deletions
diff --git a/util/generic/guid.cpp b/util/generic/guid.cpp
index 8b907457bc..ef023aa5e2 100644
--- a/util/generic/guid.cpp
+++ b/util/generic/guid.cpp
@@ -48,23 +48,23 @@ void CreateGuid(TGUID* res) {
WriteUnaligned<ui64>(&dw[1], RandomNumber<ui64>());
}
-TGUID TGUID::CreateTimebased() {
- TGUID result;
- // GUID_EPOCH_OFFSET is the number of 100-ns intervals between the
- // UUID epoch 1582-10-15 00:00:00 and the Unix epoch 1970-01-01 00:00:00.
- constexpr ui64 GUID_EPOCH_OFFSET = 0x01b21dd213814000;
- const ui64 timestamp = Now().NanoSeconds() / 100 + GUID_EPOCH_OFFSET;
- result.dw[0] = ui32(timestamp & 0xffffffff); // time low
- const ui32 timeMid = ui32((timestamp >> 32) & 0xffff);
- constexpr ui32 UUID_VERSION = 1;
- const ui32 timeHighAndVersion = ui16((timestamp >> 48) & 0x0fff) | (UUID_VERSION << 12);
- result.dw[1] = (timeMid << 16) | timeHighAndVersion;
- const ui32 clockSeq = RandomNumber<ui32>(0x3fff) | 0x8000;
- result.dw[2] = (clockSeq << 16) | RandomNumber<ui16>();
- result.dw[3] = RandomNumber<ui32>() | (1 << 24);
- return result;
-}
-
+TGUID TGUID::CreateTimebased() {
+ TGUID result;
+ // GUID_EPOCH_OFFSET is the number of 100-ns intervals between the
+ // UUID epoch 1582-10-15 00:00:00 and the Unix epoch 1970-01-01 00:00:00.
+ constexpr ui64 GUID_EPOCH_OFFSET = 0x01b21dd213814000;
+ const ui64 timestamp = Now().NanoSeconds() / 100 + GUID_EPOCH_OFFSET;
+ result.dw[0] = ui32(timestamp & 0xffffffff); // time low
+ const ui32 timeMid = ui32((timestamp >> 32) & 0xffff);
+ constexpr ui32 UUID_VERSION = 1;
+ const ui32 timeHighAndVersion = ui16((timestamp >> 48) & 0x0fff) | (UUID_VERSION << 12);
+ result.dw[1] = (timeMid << 16) | timeHighAndVersion;
+ const ui32 clockSeq = RandomNumber<ui32>(0x3fff) | 0x8000;
+ result.dw[2] = (clockSeq << 16) | RandomNumber<ui16>();
+ result.dw[3] = RandomNumber<ui32>() | (1 << 24);
+ return result;
+}
+
TString GetGuidAsString(const TGUID& g) {
return g.AsGuidString();
}