Message 372253 - Python tracker

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In-reply-to
Author	vstinner
Recipients	aeros, corona10, eric.snow, shihai1991, vstinner
Date	2020年06月24日.13:55:09
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1593006909.26.0.00307673576711.issue40512@roundup.psfhosted.org>

Content
Update of the EXPERIMENTAL_ISOLATED_SUBINTERPRETERS status. I made many free lists and singletons per interpreter in bpo-40521. TODO: * _PyUnicode_FromId() and interned strings are still shared: typeobject.c requires a workaround for that. * GC is disabled in subinterpreters since some objects are still shared * Type method cache is shared. * pymalloc is shared. * The GIL is shared. I'm investigating performance of my _PyUnicode_FromId() PR: https://github.com/python/cpython/pull/20058 This PR now uses "atomic functions" proposed in a second PR: https://github.com/python/cpython/pull/20766 The "atomic functions" avoids the need to have to declare a variable or a structure member as atomic, which would cause different issues if they are declared in Python public headers (which is the case for _Py_Identifier used by _PyUnicode_FromId()).

Content

Update of the EXPERIMENTAL_ISOLATED_SUBINTERPRETERS status.
I made many free lists and singletons per interpreter in bpo-40521.
TODO:
* _PyUnicode_FromId() and interned strings are still shared: typeobject.c requires a workaround for that.
* GC is disabled in subinterpreters since some objects are still shared
* Type method cache is shared.
* pymalloc is shared.
* The GIL is shared.
I'm investigating performance of my _PyUnicode_FromId() PR: https://github.com/python/cpython/pull/20058
This PR now uses "atomic functions" proposed in a second PR: https://github.com/python/cpython/pull/20766
The "atomic functions" avoids the need to have to declare a variable or a structure member as atomic, which would cause different issues if they are declared in Python public headers (which is the case for _Py_Identifier used by _PyUnicode_FromId()).

History
Date	User	Action	Args
2020年06月24日 13:55:09	vstinner	set	recipients: + vstinner, eric.snow, corona10, shihai1991, aeros
2020年06月24日 13:55:09	vstinner	set	messageid: <1593006909.26.0.00307673576711.issue40512@roundup.psfhosted.org>
2020年06月24日 13:55:09	vstinner	link	issue40512 messages
2020年06月24日 13:55:09	vstinner	create

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