[New-bugs-announce] [issue31308] forkserver process isn't re-launched if it died

[Antoine Pitrou]

New submission from Antoine Pitrou:

It may happen that the forkserver process dies (for example if SIGINT is received because the user pressed Ctrl-C) while the parent process is still alive.  In that case, if the parent tries to create a new Process instance, an exception is received.

The exception looks like this:

  File "/xxx/lib/python3.5/multiprocessing/popen_forkserver.py", line 52, in _launch
	self.sentinel, w = forkserver.connect_to_new_process(self._fds)
  File "/xxx/lib/python3.5/multiprocessing/forkserver.py", line 66, in connect_to_new_process
	client.connect(self._forkserver_address)
ConnectionRefusedError: [Errno 111] Connection refused

----------
components: Library (Lib)
messages: 301027
nosy: pitrou
priority: normal
severity: normal
stage: needs patch
status: open
title: forkserver process isn't re-launched if it died
type: behavior
versions: Python 3.6, Python 3.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue31308>
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