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Commit e1d55d6

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AlexWaygoodAlexWaygood
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Merge remote-tracking branch 'upstream/main' into orig_class-and-bases
2 parents 3a8619a + 55c99d9 commit e1d55d6

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‎Doc/conf.py‎

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# Minimum version of sphinx required
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needs_sphinx = '3.2'
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# Ignore any .rst files in the includes/ directory;
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# they're embedded in pages but not rendered individually.
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# Ignore any .rst files in the venv/ directory.
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exclude_patterns = ['venv/*', 'README.rst']
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exclude_patterns = ['includes/*.rst', 'venv/*', 'README.rst']
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venvdir = os.getenv('VENVDIR')
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if venvdir is not None:
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exclude_patterns.append(venvdir + '/*')

‎Doc/library/gc.rst‎

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@@ -206,12 +206,17 @@ The :mod:`gc` module provides the following functions:
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.. function:: freeze()
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Freeze all the objects tracked by gc - move them to a permanent generation
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and ignore all the future collections. This can be used before a POSIX
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fork() call to make the gc copy-on-write friendly or to speed up collection.
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Also collection before a POSIX fork() call may free pages for future
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allocation which can cause copy-on-write too so it's advised to disable gc
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in parent process and freeze before fork and enable gc in child process.
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Freeze all the objects tracked by the garbage collector; move them to a
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permanent generation and ignore them in all the future collections.
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If a process will ``fork()`` without ``exec()``, avoiding unnecessary
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copy-on-write in child processes will maximize memory sharing and reduce
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overall memory usage. This requires both avoiding creation of freed "holes"
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in memory pages in the parent process and ensuring that GC collections in
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child processes won't touch the ``gc_refs`` counter of long-lived objects
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originating in the parent process. To accomplish both, call ``gc.disable()``
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early in the parent process, ``gc.freeze()`` right before ``fork()``, and
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``gc.enable()`` early in child processes.
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.. versionadded:: 3.7
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