Charles-François Natali added the comment:
> It looks like the main process keeps getting killed by SIGUSR1.
> Don't know why.
In Lib/test/_test_multiprocessing.py:
"""
def test_poll_eintr(self):
got_signal = [False]
def record(*args):
got_signal[0] = True
pid = os.getpid()
oldhandler = signal.signal(signal.SIGUSR1, record)
try:
killer = self.Process(target=self._killer, args=(pid,))
killer.start()
p = self.Process(target=time.sleep, args=(1,))
p.start()
p.join()
self.assertTrue(got_signal[0])
self.assertEqual(p.exitcode, 0)
killer.join()
finally:
signal.signal(signal.SIGUSR1, oldhandler)
"""
If the _killer process takes too long to start, it won't send SIGUSR1 before
the p process returns (0.5s vs 1s): which means that the default SIGUSR1
handler will be restored before SIGUSR1 is sent. Then SIGUSR1 comes in,
resulting on the failure above.
----------
nosy: +neologix
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<http://bugs.python.org/issue18786>
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