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Issue #10278: Drop time.monotonic() function, rename time.wallclock() to time.steady()

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* On Mac OS X, time.steady() now uses mach_absolute_time(), a monotonic clock
 * Optimistic change: bet that CLOCK_MONOTONIC and CLOCK_REALTIME are available
   when clock_gettime() is available
 * Rewrite time.steady() documentation
This commit is contained in:
Victor Stinner 2012-03-15 00:58:32 +01:00
parent 5e5451940c
commit ec919cc74d
4 changed files with 27 additions and 109 deletions
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25
Lib/test/test_time.py
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@ -331,29 +331,10 @@ class TimeTestCase(unittest.TestCase):
pass
self.assertEqual(time.strftime('%Z', tt), tzname)
@unittest.skipUnless(hasattr(time, 'monotonic'),
'need time.monotonic()')
def test_monotonic(self):
t1 = time.monotonic()
t2 = time.monotonic()
self.assertGreaterEqual(t2, t1)
t1 = time.monotonic()
def test_steady(self):
t1 = time.steady()
time.sleep(0.1)
t2 = time.monotonic()
dt = t2 - t1
self.assertGreater(t2, t1)
self.assertAlmostEqual(dt, 0.1, delta=0.2)
def test_wallclock(self):
t1 = time.wallclock()
t2 = time.wallclock()
# may fail if the system clock was changed
self.assertGreaterEqual(t2, t1)
t1 = time.wallclock()
time.sleep(0.1)
t2 = time.wallclock()
t2 = time.steady()
dt = t2 - t1
# may fail if the system clock was changed
self.assertGreater(t2, t1)