Mercurial > hg
changeset 30974:ae5d60bb70c9
util: introduce timer()
As documented for timeit.default_timer, there are better timers available for
performance measures on some platforms. These timers don't have a set epoch,
and thus are only useful for interval measurements, but have higher
resolution, and thus get you a better measurement overall.
Use the same selection logic as Python's timeit.default_timer. This is a
platform clock on Python 2 and early Python 3, and time.perf_counter on Python
3.3 and later (where time.perf_counter is introduced as the best timer to use).
| author | Simon Farnsworth <simonfar@fb.com> |
|---|---|
| date | Wed, 15 Feb 2017 11:53:59 -0800 |
| parents | e5363cb96233 |
| children | 22fbca1d11ed |
| files | mercurial/util.py |
| diffstat | 1 files changed, 5 insertions(+), 0 deletions(-) [+] |
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--- a/mercurial/util.py Thu Dec 22 02:38:53 2016 +0100 +++ b/mercurial/util.py Wed Feb 15 11:53:59 2017 -0800 @@ -1203,8 +1203,13 @@ if pycompat.osname == 'nt': checkosfilename = checkwinfilename + timer = time.clock else: checkosfilename = platform.checkosfilename + timer = time.time + +if safehasattr(time, "perf_counter"): + timer = time.perf_counter def makelock(info, pathname): try: