grunning

func Difference ¶

func Difference(a, b time.Duration) time.Duration

Difference is a helper function to compute the absolute difference between two durations.

func Elapsed ¶

func Elapsed(start, end time.Duration) time.Duration

Elapsed returns the running time spent doing some piece of work, with grunning.Time() measurements from the start and end.

NB: This only exists due to grunning.Time()'s non-monotonicity, a bug in our runtime patch: https://github.com/cockroachdb/cockroachdb-parser/issues/95529. We can get rid of this, keeping just grunning.Difference(), if that bug is fixed. The bug results in slight {over,under}-estimation of the running time (the latter breaking monotonicity), but is livable with our current uses of this library.

func Supported ¶

func Supported() bool

Supported returns true iff per-goroutine running time is available in this build. We use a patched Go runtime for all platforms officially supported for CRDB when built using Bazel.

func Time ¶

func Time() time.Duration

Time returns the time spent by the current goroutine in the running state.