8000 gh-104372: Drop the GIL around the vfork() call. by gpshead · Pull Request #104782 · python/cpython · GitHub
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gh-104372: Drop the GIL around the vfork() call. #104782

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Merged
merged 5 commits into from
May 25, 2023
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gh-104372: Drop the GIL around the vfork() call. #104782

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2d54d8e
gh-104372: Drop the GIL around the vfork() call.
gpshead May 23, 2023
eb38573
Simplify: avoid -Wclobbered the compiler warning.
gpshead May 24, 2023
9197a4f
Docs: clarify that timeout= can't cover process creation.
gpshead May 24, 2023
02a8538
Merge branch 'main' into subprocess-drop-gil-before-vfork
gpshead May 24, 2023
df7f7ab
update the comment
gpshead May 25, 2023
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Docs: clarify that timeout= can't cover process creation.
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@gpshead
gpshead committed May 24, 2023
commit 9197a4f474abc5caa202aa1ae6dbc1402a4c84c6
13 changes: 8 additions & 5 deletions Doc/library/subprocess.rst
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Expand Up @@ -57,10 +57,13 @@ underlying :class:`Popen` interface can be used directly.
and combine both streams into one, use ``stdout=PIPE`` and ``stderr=STDOUT``
instead of *capture_output*.

The *timeout* argument is passed to :meth:`Popen.communicate`. If the timeout
expires, the child process will be killed and waited for. The
:exc:`TimeoutExpired` exception will be re-raised after the child process
has terminated.
A *timeout* may be specified in seconds, it is internally passed on to
:meth:`Popen.communicate`. If the timeout expires, the child process will be
killed and waited for. The :exc:`TimeoutExpired` exception will be
re-raised after the child process has terminated. The initial process
creation itself cannot be interrupted on many platform APIs so you are not
guaranteed to see a timeout exception until at least after however long
process creation takes.

The *input* argument is passed to :meth:`Popen.communicate` and thus to the
subprocess's stdin. If used it must be a byte sequence, or a string if
Expand Down Expand Up @@ -734,7 +737,7 @@ arguments.
code.

All of the functions and methods that accept a *timeout* parameter, such as
:func:`call` and :meth:`Popen.communicate` will raise :exc:`TimeoutExpired` if
:func:`run` and :meth:`Popen.communicate` will raise :exc:`TimeoutExpired` if
the timeout expires before the process exits.

Exceptions defined in this module all inherit from :exc:`SubprocessError`.
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