On 01/11/2010 14:00, Kristján Valur Jónsson wrote:
Working on Condition variables and semaphores (see
http://bugs.python.org/issue10260) I noticed that time.time() was
being used to correctly time blocking system calls. On windows, I
would have used time.clock() but reading the documentation made me
realize that on Unix that would return CPU seconds which are useless
when blocking. However, on Windows, time.clock() has a much higher
resolution, apart from being a "wallclock" time, and is thus better
suited to timing that time.time(). In addition, time.time() has the
potential of giving unexpected results if someone messes with the
system clock.
I was wondering if it were helpful to have a function such as
time.wallclock() which is specified to give relative wallclock time
between invocations or an approximation thereof, to the system's best
ability?
We could then choose this to be an alias of time.clock() on windows
and time.time() on any other machine, or even have custom
implementations on machines that support such a notion.
I think this would be helpful. Having to do platform specific checks to
choose which time function to use is annoying.
Michael
Kristján
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