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Merged revisions 78777,78787,78790 via svnmerge from 

svn+ssh://pythondev@svn.python.org/python/trunk

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  r78777 | florent.xicluna | 2010-03-08 00:49:03 +0100 (lun, 08 mar 2010) | 4 lines

  Backport the Popen.poll() protection from subprocess to multiprocessing. See #1731717.
  It should fix transient failures on test_multiprocessing.
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  r78787 | florent.xicluna | 2010-03-08 08:21:16 +0100 (lun, 08 mar 2010) | 2 lines

  Don't fail on a debug() statement, if the worker PID is (still) None.
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  r78790 | florent.xicluna | 2010-03-08 12:01:39 +0100 (lun, 08 mar 2010) | 2 lines

  On finalize, don't try to join not started process.
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This commit is contained in:
Florent Xicluna 2010-03-08 13:32:17 +00:00
parent 4886d246a8
commit 998171f0d7
2 changed files with 9 additions and 6 deletions
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7
Lib/multiprocessing/forking.py
View File

@ -104,7 +104,12 @@ if sys.platform != 'win32':
def poll(self, flag=os.WNOHANG):
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 os.WIFSIGNALED(sts):
self.returncode = -os.WTERMSIG(sts)

8
Lib/multiprocessing/pool.py
View File

@ -448,12 +448,10 @@ class Pool(object):
if pool and hasattr(pool[0], 'terminate'):
debug('joining pool workers')
for p in pool:
p.join()
for w in pool:
if w.exitcode is None:
if p.is_alive():
# worker has not yet exited
debug('cleaning up worker %d' % w.pid)
w.join()
debug('cleaning up worker %d' % p.pid)
p.join()
#
# Class whose instances are returned by `Pool.apply_async()`