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Fix bpo-30589: improve Process.exitcode with forkserver (#1989)

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* Fix bpo-30589: improve Process.exitcode with forkserver

When the child is killed, Process.exitcode should return -signum, not 255.

* Add Misc/NEWS
This commit is contained in:
Antoine Pitrou 2017-06-12 15:28:19 +02:00 • committed by GitHub
parent ced36a993f
commit dfd5f34634
5 changed files with 138 additions and 49 deletions
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15
Lib/multiprocessing/popen_fork.py
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@ -24,15 +24,12 @@ class Popen(object):
def poll(self, flag=os.WNOHANG):
if self.returncode is None:
while True:
try:
pid, sts = os.waitpid(self.pid, flag)
except OSError as e:
# Child process not yet created. See #1731717
# e.errno == errno.ECHILD == 10
return None
else:
break
try:
pid, sts = os.waitpid(self.pid, flag)
except OSError as e:
# Child process not yet created. See #1731717
# e.errno == errno.ECHILD == 10
return None
if pid == self.pid:
if os.WIFSIGNALED(sts):
self.returncode = -os.WTERMSIG(sts)