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bpo-31784: Implement PEP 564: add time.time_ns() (#3989)

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Add new time functions:

* time.clock_gettime_ns()
* time.clock_settime_ns()
* time.monotonic_ns()
* time.perf_counter_ns()
* time.process_time_ns()
* time.time_ns()

Add new _PyTime functions:

* _PyTime_FromTimespec()
* _PyTime_FromNanosecondsObject()
* _PyTime_FromTimeval()

Other changes:

* Add also os.times() tests to test_os.
* pytime_fromtimeval() and pytime_fromtimeval() now return
  _PyTime_MAX or _PyTime_MIN on overflow, rather than undefined
  behaviour
* _PyTime_FromNanoseconds() parameter type changes from long long to
  _PyTime_t
This commit is contained in:
Victor Stinner 2017-11-02 07:28:27 -07:00 • committed by GitHub
parent e314853d57
commit c29b585fd4
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9 changed files with 593 additions and 175 deletions
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17
Lib/test/test_os.py
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@ -3549,6 +3549,23 @@ class TestPEP519(unittest.TestCase):
self.assertRaises(ZeroDivisionError, self.fspath,
_PathLike(ZeroDivisionError()))
class TimesTests(unittest.TestCase):
def test_times(self):
times = os.times()
self.assertIsInstance(times, os.times_result)
for field in ('user', 'system', 'children_user', 'children_system',
'elapsed'):
value = getattr(times, field)
self.assertIsInstance(value, float)
if os.name == 'nt':
self.assertEqual(times.children_user, 0)
self.assertEqual(times.children_system, 0)
self.assertEqual(times.elapsed, 0)
# Only test if the C version is provided, otherwise TestPEP519 already tested
# the pure Python implementation.
if hasattr(os, "_fspath"):