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Clear potential ref cycle between Process and Process target (#2470)

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* Clear potential ref cycle between Process and Process target

Besides Process.join() not being called, this was an indirect cause of bpo-30775.
The threading module already does this.

* Add issue reference
This commit is contained in:
Antoine Pitrou 2017-06-28 12:29:08 +02:00 • committed by Victor Stinner
parent a79f8faccf
commit 79d37ae979
2 changed files with 21 additions and 0 deletions
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3
Lib/multiprocessing/process.py
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@ -110,6 +110,9 @@ class BaseProcess(object):
_cleanup()
self._popen = self._Popen(self)
self._sentinel = self._popen.sentinel
# Avoid a refcycle if the target function holds an indirect
# reference to the process object (see bpo-30775)
del self._target, self._args, self._kwargs
_children.add(self)
def terminate(self):