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| author | Daniel Gómez Ferro <daniel.gomezferro@mongodb.com> | 2022-02-15 14:44:11 +0000 |
|---|---|---|
| committer | Evergreen Agent <no-reply@evergreen.mongodb.com> | 2022-02-15 16:26:43 +0000 |
| commit | a5705b89f02a4cc1c3b1ce0eebc11e53fe668c5b (patch) | |
| tree | ade8e8cf85852b669ddca7d7f87dfec85c0eb4b1 /src/mongo/util/tick_source.h | |
| parent | eeff4a62ad0702abfe3d599e16696baefc6c8cec (diff) | |
| download | mongo-a5705b89f02a4cc1c3b1ce0eebc11e53fe668c5b.tar.gz | |
SERVER-63651 Support non-monotonic clocks in PrepareConflictTracker
Diffstat (limited to 'src/mongo/util/tick_source.h')
| -rw-r--r-- | src/mongo/util/tick_source.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/mongo/util/tick_source.h b/src/mongo/util/tick_source.h index f77ea9d1d6f..5b0abc88aca 100644 --- a/src/mongo/util/tick_source.h +++ b/src/mongo/util/tick_source.h @@ -29,6 +29,7 @@ #pragma once +#include <algorithm> #include <cstdint> namespace mongo { @@ -64,5 +65,18 @@ public: static_cast<double>(getTicksPerSecond()) * D::period::num / D::period::den; return D(static_cast<int64_t>(ticks / ticksPerD)); } + + /** + * Measures the length of the span from the start tick to the end tick and returns the result + * using duration type D. + * If the start tick is after (greater than) the end tick, returns a duration equivalent to 0 + * ticks. + * + * e.g. tickSource->spanTo<Milliseconds>(start, end); + */ + template <typename D> + D spanTo(Tick start, Tick end) { + return ticksTo<D>(std::max((end - start), Tick{0})); + } }; } // namespace mongo |