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Title: gh-113993: Allow interned strings to be mortal, and fix related issues by encukou · Pull Request #120520 · python/cpython · GitHub

Open Graph Title: gh-113993: Allow interned strings to be mortal, and fix related issues by encukou · Pull Request #120520 · python/cpython

X Title: gh-113993: Allow interned strings to be mortal, and fix related issues by encukou · Pull Request #120520 · python/cpython

Description: I've spent too much time looking at this myself, it wants more eyes :) I spent a week learning about the string interning mechanism, and wrote up how I think it should work in an InternalDocs file ...

Open Graph Description: I've spent too much time looking at this myself, it wants more eyes :) I spent a week learning about the string interning mechanism, and wrote up how I think it should work in an InternalDocs f...

X Description: I've spent too much time looking at this myself, it wants more eyes :) I spent a week learning about the string interning mechanism, and wrote up how I think it should work in an InternalDo...

Opengraph URL: https://github.com/python/cpython/pull/120520

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gh-113993: Allow interned strings to be mortal, and fix related issues https://github.com/python/cpython/pull/120520#top
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Jun 14, 2024https://github.com/python/cpython/pull/120520#issue-2354034033
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Interned strings are immortal, despite what the documentation says #113993https://github.com/python/cpython/issues/113993
Please reload this pagehttps://github.com/python/cpython/pull/120520
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June 14, 2024 21:24https://github.com/python/cpython/pull/120520#commits-pushed-2b74021
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Declare explicit interning routineshttps://github.com/python/cpython/pull/120520/commits/2b7402192aa284103e4be0202cdb136c11780e78
2b74021https://github.com/python/cpython/pull/120520/commits/2b7402192aa284103e4be0202cdb136c11780e78
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Use _PyUnicode_InternStatic for the statically allocated stuffhttps://github.com/python/cpython/pull/120520/commits/0aedb83454bc3b444e46f1b0a38261fd23c62973
0aedb83https://github.com/python/cpython/pull/120520/commits/0aedb83454bc3b444e46f1b0a38261fd23c62973
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Add _PyUnicode_InternStatic and extra checkshttps://github.com/python/cpython/pull/120520/commits/aad79b2e6dff650d26f1d6f40fec608aa8009583
aad79b2https://github.com/python/cpython/pull/120520/commits/aad79b2e6dff650d26f1d6f40fec608aa8009583
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Check against immortalizing un-interned stringshttps://github.com/python/cpython/pull/120520/commits/5413223c29c0f2169185d73735930ab233ccb031
5413223https://github.com/python/cpython/pull/120520/commits/5413223c29c0f2169185d73735930ab233ccb031
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Add _PyUnicode_InternImmortal & make marshal use ithttps://github.com/python/cpython/pull/120520/commits/23845fbeff526d9600413c18aff40eb4f40b2d2c
23845fbhttps://github.com/python/cpython/pull/120520/commits/23845fbeff526d9600413c18aff40eb4f40b2d2c
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Remove special case that makes previously-immortal strings STATIChttps://github.com/python/cpython/pull/120520/commits/9ece2206cc077f5f5c958394288526f9c5a00666
9ece220https://github.com/python/cpython/pull/120520/commits/9ece2206cc077f5f5c958394288526f9c5a00666
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Split _PyUnicode_InternMortal and _PyUnicode_InternImmortalhttps://github.com/python/cpython/pull/120520/commits/7c62641499d0131fd5e5fe75a533c5e8b63ed17f
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Do the refcnt dance in _PyUnicode_InternMortal & _PyUnicode_ClearInte…https://github.com/python/cpython/pull/120520/commits/62a35a14b86b26001f5bb48ecdcc437be1a62547
62a35a1https://github.com/python/cpython/pull/120520/commits/62a35a14b86b26001f5bb48ecdcc437be1a62547
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Deallocate mortal interned stringshttps://github.com/python/cpython/pull/120520/commits/ac55a052049626b6bbef328e33bc91067b7ec7ed
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Use _PyUnicode_InternMortal in codecshttps://github.com/python/cpython/pull/120520/commits/2466ae926259e8ecf88a9f1b9baa0da44f66ddda
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Start a notes documenthttps://github.com/python/cpython/pull/120520/commits/032ac17d54740dc802d13181fe9ffa75dae49461
032ac17https://github.com/python/cpython/pull/120520/commits/032ac17d54740dc802d13181fe9ffa75dae49461
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Handle attempts to "overwrite" interned heap types by static oneshttps://github.com/python/cpython/pull/120520/commits/198d9c630e368e3879e0996567a9fcd528d05b50
198d9c6https://github.com/python/cpython/pull/120520/commits/198d9c630e368e3879e0996567a9fcd528d05b50
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Intern statically allocated non-identifier strings at inithttps://github.com/python/cpython/pull/120520/commits/86ccb08d7d2e323cd255e6cd30626334139ffc99
86ccb08https://github.com/python/cpython/pull/120520/commits/86ccb08d7d2e323cd255e6cd30626334139ffc99
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Parenthesize the LATIN1 macro argumenthttps://github.com/python/cpython/pull/120520/commits/e34b8dac6523a84b2c125589dc97aa85022bd016
e34b8dahttps://github.com/python/cpython/pull/120520/commits/e34b8dac6523a84b2c125589dc97aa85022bd016
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Don't create the per-interp interned_dict until after InitStaticStringshttps://github.com/python/cpython/pull/120520/commits/66338fe9a5b6b3d918a146f03131882ac76b93f9
66338fehttps://github.com/python/cpython/pull/120520/commits/66338fe9a5b6b3d918a146f03131882ac76b93f9
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Move hashmap destroy to _PyUnicode_ClearInterned (symmetry with creat…https://github.com/python/cpython/pull/120520/commits/9f16cb0c99c5486bfc651a271ce7cbb284e0eca8
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Special-case short string singletonshttps://github.com/python/cpython/pull/120520/commits/e27abfccc882633e4de80a483c5a8622b0810864
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Verify we don't add process-global entries after a per-interp dict ex…https://github.com/python/cpython/pull/120520/commits/89f24df97e5baad983cda088b81f31e7300a342e
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More editing of the InternalDocs write-uphttps://github.com/python/cpython/pull/120520/commits/b965acfc671b4fa3978557e79ed05dc5fb1edac5
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Only readjust refleak tests for *immortal* interned stringshttps://github.com/python/cpython/pull/120520/commits/4b69712756d87c612d9cab510cb0717e62113d5d
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Be pedantic with the ref totalhttps://github.com/python/cpython/pull/120520/commits/b2c9865a9f74190402411c8db401fb75cbbdfb49
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Split InternInPlace in sysmodulehttps://github.com/python/cpython/pull/120520/commits/cf7cb72b86fd37eab17e74e802545ffbeeb771f7
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Split InternInPlace in importhttps://github.com/python/cpython/pull/120520/commits/85f9fe051ffa48ca594caef6e9ad847abfbaad94
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Split InternInPlace in getargshttps://github.com/python/cpython/pull/120520/commits/a288389e02261e05f01e8dd5463ea35aaf3ffa62
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Use mortal strings in type_setattrohttps://github.com/python/cpython/pull/120520/commits/6036cb1907b4ad27dabe875714d9cc316a67b7e9
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Use mortal string in type_modulehttps://github.com/python/cpython/pull/120520/commits/01f2dbfe177ef0303bb31157a5de25e5ccd0c3fb
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Use mortal strings for object attributeshttps://github.com/python/cpython/pull/120520/commits/73f7fb32ef1a88deb5dde003bb266e185a19c299
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Use mortal strings for code object nameshttps://github.com/python/cpython/pull/120520/commits/13be4e742721391a15fe7e13e53071798d1c0d74
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Use mortal strings for code constantshttps://github.com/python/cpython/pull/120520/commits/1930919e7b245a8ba0eb3bd98cdd0737450a6bc9
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Use mortals in picklehttps://github.com/python/cpython/pull/120520/commits/d45f20b34e2ffc790e48bcc945dc3b8312fd0c35
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Jun 21, 2024https://github.com/python/cpython/pull/120520#event-13243957294
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