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bpo-21302: time.sleep() uses waitable timer on Windows (GH-28483)

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On Windows, time.sleep() now uses a waitable timer which has a
resolution of 100 ns (10^-7 sec). Previously, it had a solution of 1
ms (10^-3 sec).

* On Windows, time.sleep() now calls PyErr_CheckSignals() before
  resetting the SIGINT event.
* Add _PyTime_As100Nanoseconds() function.
* Complete and update time.sleep() documentation.

Co-authored-by: Livius <egyszeregy@freemail.hu>
This commit is contained in:
Victor Stinner 2021-09-22 16:09:30 +02:00 • committed by GitHub
parent 8620be99da
commit 58f8adfda3
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6 changed files with 161 additions and 56 deletions
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11
Python/pytime.c
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@ -33,6 +33,7 @@
/* Conversion from nanoseconds */
#define NS_TO_MS (1000 * 1000)
#define NS_TO_US (1000)
#define NS_TO_100NS (100)
static void
@ -568,6 +569,16 @@ _PyTime_AsNanoseconds(_PyTime_t t)
}
#ifdef MS_WINDOWS
_PyTime_t
_PyTime_As100Nanoseconds(_PyTime_t t, _PyTime_round_t round)
{
_PyTime_t ns = pytime_as_nanoseconds(t);
return pytime_divide(ns, NS_TO_100NS, round);
}
#endif
_PyTime_t
_PyTime_AsMicroseconds(_PyTime_t t, _PyTime_round_t round)
{