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Issue #20311: Revert e042ea77a152 and 7ce7295393c2, PollSelector.select() and

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EpollSelector.select() round again the timeout towards zero
This commit is contained in:
Victor Stinner 2014-01-25 14:43:45 +01:00
parent 38c72bd199
commit 2041859f27
3 changed files with 2 additions and 32 deletions
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19
Lib/test/test_selectors.py
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@ -363,25 +363,6 @@ class BaseSelectorTestCase(unittest.TestCase):
self.assertFalse(s.select(2))
self.assertLess(time() - t, 2.5)
def test_timeout_rounding(self):
# Issue #20311: Timeout must be rounded away from zero to wait *at
# least* timeout seconds. For example, epoll_wait() has a resolution of
# 1 ms (10^-3), epoll.select(0.0001) must wait 1 ms, not 0 ms.
s = self.SELECTOR()
self.addCleanup(s.close)
rd, wr = self.make_socketpair()
s.register(rd, selectors.EVENT_READ)
for timeout in (1e-2, 1e-3, 1e-4):
t0 = perf_counter()
s.select(timeout)
dt = perf_counter() - t0
clock = get_clock_info('perf_counter')
self.assertGreaterEqual(dt, timeout,
"%.30f < %.30f ; clock=%s"
% (dt, timeout, clock))
class ScalableSelectorMixIn: