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bpo-42745: Make the type cache per-interpreter - #23947

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vstinner merged 1 commit into
python:masterfrom
vstinner:method_cache
Dec 26, 2020
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bpo-42745: Make the type cache per-interpreter#23947
vstinner merged 1 commit into
python:masterfrom
vstinner:method_cache

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@vstinner

@vstinnervstinner commented Dec 25, 2020•
edited by bedevere-bot
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Make the type attribute lookup cache per-interpreter.

Remove MCACHE macro: the cache is no longer disabled if the
EXPERIMENTAL_ISOLATED_SUBINTERPRETERS macro is defined.

https://bugs.python.org/issue42745

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vstinner commented Dec 25, 2020

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MCACHE_ prefix stands for "method cache", I chose to leave it unchanged.

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vstinner commented Dec 26, 2020

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My PR is wrong:

 7 tests failed:
test__xxsubinterpreters test_ast test_atexit test_capi test_embed
test_interpreters test_threading

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vstinner commented Dec 26, 2020

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This PR can be tested using PR #20085.

@vstinner
bpo-42745: Make the type cache per-interpreter
bf67d11
Make the type attribute lookup cache per-interpreter.
Add _PyType_InitCache() function, called by PyInterpreterState_New().
Remove MCACHE macro: the cache is no longer disabled if the
EXPERIMENTAL_ISOLATED_SUBINTERPRETERS macro is defined.
Continue to share next_version_tag between interpreters, since static
types are still shared by interpreters.
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vstinner commented Dec 26, 2020

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My PR is wrong: (...)

It should now be fixed: I added _PyType_InitCache() and I left next_version_tag unchanged.

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vstinner merged commit 4101018 into python:masterDec 26, 2020
@vstinner
vstinner deleted the method_cache branch December 26, 2020 00:45
adorilson pushed a commit to adorilson/cpython that referenced this pull request Mar 13, 2021
@vstinner@adorilson
bpo-42745: Make the type cache per-interpreter (pythonGH-23947)
e0b912e
Make the type attribute lookup cache per-interpreter.
Add private _PyType_InitCache() function, called by PyInterpreterState_New().
Continue to share next_version_tag between interpreters, since static
types are still shared by interpreters.
Remove MCACHE macro: the cache is no longer disabled if the
EXPERIMENTAL_ISOLATED_SUBINTERPRETERS macro is defined.
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@vstinner@the-knights-who-say-ni@bedevere-bot