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| author | Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> | 2025-05-24 04:16:02 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-05-24 04:16:02 (GMT) |
| commit | 00fd5440f03e55718bad76dbc45725f24744596c (patch) | |
| tree | f27b88c976dc6113c37bd9b7ebdd41b0428c60c7 | |
| parent | de9444ef94abe0cc8f72c26cd3900f4c66883646 (diff) | |
| download | cpython-00fd5440f03e55718bad76dbc45725f24744596c.zip cpython-00fd5440f03e55718bad76dbc45725f24744596c.tar.gz cpython-00fd5440f03e55718bad76dbc45725f24744596c.tar.bz2 | |
[3.14] gh-80334: fix multiprocessing.freeze_support for other spawn platforms (GH-134462) (#134619)
gh-80334: fix multiprocessing.freeze_support for other spawn platforms (GH-134462)
Doc/library/multiprocessing.rst: freeze_support: Change to specify spawn method instead of platform
Have multiprocessing.freeze_support() enable on spawn, not just win32.
---------
(cherry picked from commit 80284b5c5eebd0e603c38322f94a97a2853ceeba)
Co-authored-by: Eddy Mulyono <eddymul@gmail.com>
Co-authored-by: Gregory P. Smith <greg@krypto.org>
| -rw-r--r-- | Doc/library/multiprocessing.rst | 10 | ||||
| -rw-r--r-- | Lib/multiprocessing/context.py | 2 | ||||
| -rw-r--r-- | Misc/NEWS.d/next/Library/2025-05-24-03-10-36.gh-issue-80334.z21cMa.rst | 2 |
3 files changed, 8 insertions, 6 deletions
diff --git a/Doc/library/multiprocessing.rst b/Doc/library/multiprocessing.rst index 6c43d5f..6f37930 100644 --- a/Doc/library/multiprocessing.rst +++ b/Doc/library/multiprocessing.rst @@ -1081,7 +1081,7 @@ Miscellaneous .. function:: freeze_support() Add support for when a program which uses :mod:`multiprocessing` has been - frozen to produce a Windows executable. (Has been tested with **py2exe**, + frozen to produce an executable. (Has been tested with **py2exe**, **PyInstaller** and **cx_Freeze**.) One needs to call this function straight after the ``if __name__ == @@ -1099,10 +1099,10 @@ Miscellaneous If the ``freeze_support()`` line is omitted then trying to run the frozen executable will raise :exc:`RuntimeError`. - Calling ``freeze_support()`` has no effect when invoked on any operating - system other than Windows. In addition, if the module is being run - normally by the Python interpreter on Windows (the program has not been - frozen), then ``freeze_support()`` has no effect. + Calling ``freeze_support()`` has no effect when the start method is not + *spawn*. In addition, if the module is being run normally by the Python + interpreter (the program has not been frozen), then ``freeze_support()`` + has no effect. .. function:: get_all_start_methods() diff --git a/Lib/multiprocessing/context.py b/Lib/multiprocessing/context.py index d0a3ad0..051d567 100644 --- a/Lib/multiprocessing/context.py +++ b/Lib/multiprocessing/context.py @@ -145,7 +145,7 @@ class BaseContext(object): '''Check whether this is a fake forked process in a frozen executable. If so then run code specified by commandline and exit. ''' - if sys.platform == 'win32' and getattr(sys, 'frozen', False): + if self.get_start_method() == 'spawn' and getattr(sys, 'frozen', False): from .spawn import freeze_support freeze_support() diff --git a/Misc/NEWS.d/next/Library/2025-05-24-03-10-36.gh-issue-80334.z21cMa.rst b/Misc/NEWS.d/next/Library/2025-05-24-03-10-36.gh-issue-80334.z21cMa.rst new file mode 100644 index 0000000..2284295 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2025-05-24-03-10-36.gh-issue-80334.z21cMa.rst @@ -0,0 +1,2 @@ +:func:`multiprocessing.freeze_support` now checks for work on any "spawn" +start method platform rather than only on Windows. |