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[Python-Dev] Drop the new time.wallclock() function?

Yury Selivanov yselivanov.ml at gmail.com
Sat Mar 24 00:21:57 CET 2012 
On 2012-03-23, at 7:07 PM, Victor Stinner wrote:

> 2012/3/23 Yury Selivanov <yselivanov.ml at gmail.com>:
>> Why can't I use select & threads?  You mean that if a platform does not
>> support monotonic clocks it also does not support threads and select sys
>> call?
> 
> Python 3.3 now uses time.steady(strict=False) in the threading and
> queue modules. If we replace it by time.steady(strict=True), you may
> get an error if your platform doesn't provide a monotonic clock and so
> you cannot use these modules.

Why this won't work?

try:
  from time import monotonic as _time
except ImportError:
  from time import time as _time

OR (if we decide to fail on first call, instead of ImportError)

import time
try:
  time.monotonic()
except OSError:
  _time = time
else:
  _time = time.monotonic

And then just use '_time' in your code?  What's the deal with the
'strict' kwarg?

I really like how it currently works with epoll, for instance.  It either
exists in the 'select' module, or not, if the host OS doesn't support it.
I think it should be the same for 'time.monotonic'.

-
Yury
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