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gh-110697: Use CLOCK_RES in test_os.TimerfdTests #111529

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Merged
merged 1 commit into from
Oct 30, 2023
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gh-110697: Use CLOCK_RES in test_os.TimerfdTests #111529

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12 changes: 6 additions & 6 deletions Lib/test/test_os.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4029,7 +4029,7 @@ def test_timerfd_interval(self):
t = time.perf_counter() - t

total_time = initial_expiration + interval * (count - 1)
self.assertGreater(t, total_time)
self.assertGreater(t, total_time - self.CLOCK_RES)

# wait 3.5 time of interval
time.sleep( (count+0.5) * interval)
Expand Down Expand Up @@ -4083,7 +4083,7 @@ def test_timerfd_select(self):
t = time.perf_counter() - t

total_time = initial_expiration + interval * (count - 1)
self.assertGreater(t, total_time)
self.assertGreater(t, total_time - self.CLOCK_RES)

def check_timerfd_poll(self, nanoseconds):
fd = self.timerfd_create(time.CLOCK_REALTIME, flags=os.TFD_NONBLOCK)
Expand Down Expand Up @@ -4129,10 +4129,10 @@ def check_timerfd_poll(self, nanoseconds):
total_time = initial_expiration_ns + interval_ns * (count - 1)
if nanoseconds:
dt = time.perf_counter_ns() - t
self.assertGreater(dt, total_time)
self.assertGreater(dt, total_time - self.CLOCK_RES_NS)
else:
dt = time.perf_counter() - t
self.assertGreater(dt, total_time / sec_to_nsec)
self.assertGreater(dt, total_time / sec_to_nsec - self.CLOCK_RES)
selector.unregister(fd)

def test_timerfd_poll(self):
Expand Down Expand Up @@ -4189,7 +4189,7 @@ def test_timerfd_ns_interval(self):
t = time.perf_counter_ns() - t

total_time_ns = initial_expiration_ns + interval_ns * (count - 1)
self.assertGreater(t, total_time_ns)
self.assertGreater(t, total_time_ns - self.CLOCK_RES_NS)

# wait 3.5 time of interval
time.sleep( (count+0.5) * interval_ns / one_sec_in_nsec)
Expand Down Expand Up @@ -4248,7 +4248,7 @@ def test_timerfd_ns_select(self):
t = time.perf_counter_ns() - t

total_time_ns = initial_expiration_ns + interval_ns * (count - 1)
self.assertGreater(t, total_time_ns)
self.assertGreater(t, total_time_ns - self.CLOCK_RES_NS)

class OSErrorTests(unittest.TestCase):
def setUp(self):
Expand Down