Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_wait4.py @ 78069:a8aa77458e12 3.2

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Add c_size_t and c_ssize_t to the ctypes summary table.
author Antoine Pitrou <solipsis@pitrou.net>
date Thu, 12 Jul 2012 20:31:50 +0200
parents 04d4188fb411
children b3ea1b5a1617
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1 """This test checks for correct wait4() behavior.
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2 """
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3
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4 import os
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5 import time
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6 from test.fork_wait import ForkWait
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7 from test.support import run_unittest, reap_children, get_attribute
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8
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9 # If either of these do not exist, skip this test.
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10 get_attribute(os, 'fork')
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11 get_attribute(os, 'wait4')
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12
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13
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14 class Wait4Test(ForkWait):
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15 def wait_impl(self, cpid):
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16 for i in range(10):
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17 # wait4() shouldn't hang, but some of the buildbots seem to hang
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18 # in the forking tests. This is an attempt to fix the problem.
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19 spid, status, rusage = os.wait4(cpid, os.WNOHANG)
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20 if spid == cpid:
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21 break
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22 time.sleep(1.0)
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23 self.assertEqual(spid, cpid)
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24 self.assertEqual(status, 0, "cause = %d, exit = %d" % (status&0xff, status>>8))
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25 self.assertTrue(rusage)
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26
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27 def test_main():
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28 run_unittest(Wait4Test)
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29 reap_children()
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30
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31 if __name__ == "__main__":
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32 test_main()