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bpo-37951: Lift subprocess's fork() restriction (GH-15544)

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Christian Heimes 2019-08-27 23:36:56 +02:00 • committed by GitHub
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4 changed files with 19 additions and 2 deletions
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Doc/library/subprocess.rst
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@ -483,6 +483,13 @@ functions.
The *start_new_session* parameter can take the place of a previously
common use of *preexec_fn* to call os.setsid() in the child.
.. versionchanged:: 3.8
The *preexec_fn* parameter is no longer supported in subinterpreters.
The use of the parameter in a subinterpreter raises
:exc:`RuntimeError`. The new restriction may affect applications that
are deployed in mod_wsgi, uWSGI, and other embedded environments.
If *close_fds* is true, all file descriptors except :const:`0`, :const:`1` and
:const:`2` will be closed before the child process is executed. Otherwise
when *close_fds* is false, file descriptors obey their inheritable flag