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Backport the Popen.poll() protection from subprocess to multiprocessing. See #1731717.

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It should fix transient failures on test_multiprocessing.
This commit is contained in:
Florent Xicluna 2010-03-07 23:49:03 +00:00
parent 08611b5e55
commit 16cd888dd9
1 changed files with 6 additions and 1 deletions
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7
Lib/multiprocessing/forking.py
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@ -103,7 +103,12 @@ if sys.platform != 'win32':
def poll(self, flag=os.WNOHANG): def poll(self, flag=os.WNOHANG):
if self.returncode is None: if self.returncode is None:
pid, sts = os.waitpid(self.pid, flag) try:
pid, sts = os.waitpid(self.pid, flag)
except os.error:
# Child process not yet created. See #1731717
# e.errno == errno.ECHILD == 10
return None
if pid == self.pid: if pid == self.pid:
if os.WIFSIGNALED(sts): if os.WIFSIGNALED(sts):
self.returncode = -os.WTERMSIG(sts) self.returncode = -os.WTERMSIG(sts)