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Title: gh-127266: avoid data races when updating type slots by nascheme · Pull Request #131174 · python/cpython · GitHub

Open Graph Title: gh-127266: avoid data races when updating type slots by nascheme · Pull Request #131174 · python/cpython

X Title: gh-127266: avoid data races when updating type slots by nascheme · Pull Request #131174 · python/cpython

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Open Graph Description: Avoid data races when updating type slots and type flags by "stopping-the-world" first. This is only needed if the type is potentially exposed to multiple threads. There are a couple pl...

X Description: Avoid data races when updating type slots and type flags by "stopping-the-world" first. This is only needed if the type is potentially exposed to multiple threads. There are a c...

Opengraph URL: https://github.com/python/cpython/pull/131174

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Commits54 (54)https://github.com/python/cpython/pull/131174/commits
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gh-127266: avoid data races when updating type slotshttps://github.com/python/cpython/pull/131174/commits#top
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Remove unneeded atomics for tp_flags.https://github.com/python/cpython/pull/131174/commits/b173f1769c638f21c100e55aefc5e0e60cc84609
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Remove 'world_stops' and 'sys._get_world_stops'.https://github.com/python/cpython/pull/131174/commits/44eb332fd5754f00cdd7c30de890738e1167580e
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Improve code comments.https://github.com/python/cpython/pull/131174/commits/d132fab96784d297d30250d2c92c431651058ef2
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Remove TSAN suppressions that seem unneeded.https://github.com/python/cpython/pull/131174/commits/658bcd52ab4a85134bed94eb6f30ce94a03924f7
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Add NEWS file.https://github.com/python/cpython/pull/131174/commits/ef2f07b47475faeb631f8ac89f8bc4eec865e6ed
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Use mutex rather than critical sections.https://github.com/python/cpython/pull/131174/commits/ce8536db3f59037a44db845f148e9610dfd080ad
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Merge 'origin/main' into gh-127266-type-slots-tshttps://github.com/python/cpython/pull/131174/commits/b97a4b4271069a4d5d53f1fd2c09e60612311fe4
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Fix non-debug build.https://github.com/python/cpython/pull/131174/commits/ca00e74171ecbfce4b3dbf1b1b6b26f3db1ef776
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Merge 'origin/main' into gh-127266-type-slots-tshttps://github.com/python/cpython/pull/131174/commits/398ac148137982eab7f3b712211c9c72ac69d071
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Remove unwanted suppression (bad merge).https://github.com/python/cpython/pull/131174/commits/895a86a6a85a30892500d42f6d84a29a94afd363
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Remove Py_TPFLAGS_EXPOSED flag and related logic.https://github.com/python/cpython/pull/131174/commits/2af9e4954d8cf58481203e21ce4185d1293209f4
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Improve comment for TYPE_LOCK.https://github.com/python/cpython/pull/131174/commits/f65e87c3a787c5d270499b3ec6d8e2b5b0d58a20
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Re-add the ASSERT_NEW_OR_STOPPED() asserts.https://github.com/python/cpython/pull/131174/commits/395a6d3de63dbd9e98d77f17acbb7b3169864d98
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Make the init of tp_dict thread-safe.https://github.com/python/cpython/pull/131174/commits/f7d2d36599e277b144881072f162e9b15800c31f
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f3fd35ahttps://github.com/python/cpython/pull/131174/commits/f3fd35a552728ab35b5af9afe34d6199c565cbd8
https://github.com/python/cpython/tree/f3fd35a552728ab35b5af9afe34d6199c565cbd8
Avoid acquiring the types mutex if version is set.https://github.com/python/cpython/pull/131174/commits/57c2a44171a7c03006234f8f32c8fd6a02336af7
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
57c2a44https://github.com/python/cpython/pull/131174/commits/57c2a44171a7c03006234f8f32c8fd6a02336af7
https://github.com/python/cpython/tree/57c2a44171a7c03006234f8f32c8fd6a02336af7
Add check_invalid_reentrancy() call.https://github.com/python/cpython/pull/131174/commits/7c0ccf548cba35ef44a4a1dbc1e5015ccc5f3264
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
7c0ccf5https://github.com/python/cpython/pull/131174/commits/7c0ccf548cba35ef44a4a1dbc1e5015ccc5f3264
https://github.com/python/cpython/tree/7c0ccf548cba35ef44a4a1dbc1e5015ccc5f3264
Fix additional re-entrancy issues found.https://github.com/python/cpython/pull/131174/commits/4fa77bb11c40c3c35f47a4f371baed5642dce498
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
4fa77bbhttps://github.com/python/cpython/pull/131174/commits/4fa77bb11c40c3c35f47a4f371baed5642dce498
https://github.com/python/cpython/tree/4fa77bb11c40c3c35f47a4f371baed5642dce498
Add comment explaining class_name() code.https://github.com/python/cpython/pull/131174/commits/caf6554415ef00e3f819b49752b50d6d2f5835a8
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
caf6554https://github.com/python/cpython/pull/131174/commits/caf6554415ef00e3f819b49752b50d6d2f5835a8
https://github.com/python/cpython/tree/caf6554415ef00e3f819b49752b50d6d2f5835a8
Merge 'origin/main' into gh-127266-type-slots-tshttps://github.com/python/cpython/pull/131174/commits/803d703ece44d2fd38c3444b0eb3e1ce859ab759
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
803d703https://github.com/python/cpython/pull/131174/commits/803d703ece44d2fd38c3444b0eb3e1ce859ab759
https://github.com/python/cpython/tree/803d703ece44d2fd38c3444b0eb3e1ce859ab759
Use atomic load to avoid thread safety issue.https://github.com/python/cpython/pull/131174/commits/90ea541dceddfae060ac889ee5d06da68e1e4f1f
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
90ea541https://github.com/python/cpython/pull/131174/commits/90ea541dceddfae060ac889ee5d06da68e1e4f1f
https://github.com/python/cpython/tree/90ea541dceddfae060ac889ee5d06da68e1e4f1f
Fix default debug build.https://github.com/python/cpython/pull/131174/commits/0dc0faf4c71a523a4fcdb962231766ff48afa881
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
0dc0fafhttps://github.com/python/cpython/pull/131174/commits/0dc0faf4c71a523a4fcdb962231766ff48afa881
https://github.com/python/cpython/tree/0dc0faf4c71a523a4fcdb962231766ff48afa881
Move declaration to avoid syntax error.https://github.com/python/cpython/pull/131174/commits/956e5d1bb447f64bd54f05183d9fa59226e13354
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
956e5d1https://github.com/python/cpython/pull/131174/commits/956e5d1bb447f64bd54f05183d9fa59226e13354
https://github.com/python/cpython/tree/956e5d1bb447f64bd54f05183d9fa59226e13354
Remove _PyType_GetVersionForCurrentState, unused.https://github.com/python/cpython/pull/131174/commits/2bb710c6d7930cc603062a1f40fc568eb3a95a6f
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
2bb710chttps://github.com/python/cpython/pull/131174/commits/2bb710c6d7930cc603062a1f40fc568eb3a95a6f
https://github.com/python/cpython/tree/2bb710c6d7930cc603062a1f40fc568eb3a95a6f
Fix for possible re-entrancy in has_custom_mro().https://github.com/python/cpython/pull/131174/commits/3a9bc96bc5682ff773bb2e6bd88db1fbb48e9775
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
3a9bc96https://github.com/python/cpython/pull/131174/commits/3a9bc96bc5682ff773bb2e6bd88db1fbb48e9775
https://github.com/python/cpython/tree/3a9bc96bc5682ff773bb2e6bd88db1fbb48e9775
Use correct FT_ATOMIC_ macro.https://github.com/python/cpython/pull/131174/commits/d742a53d6711deb0d140e29fb9a90c128ff9412b
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
d742a53https://github.com/python/cpython/pull/131174/commits/d742a53d6711deb0d140e29fb9a90c128ff9412b
https://github.com/python/cpython/tree/d742a53d6711deb0d140e29fb9a90c128ff9412b
Remove TSAN suppression for 'assign_version_tag'.https://github.com/python/cpython/pull/131174/commits/e7480c348b3b52fc21b9b56261eb1b1d70112213
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
e7480c3https://github.com/python/cpython/pull/131174/commits/e7480c348b3b52fc21b9b56261eb1b1d70112213
https://github.com/python/cpython/tree/e7480c348b3b52fc21b9b56261eb1b1d70112213
Small efficiency fix for types_mutex_set_owned().https://github.com/python/cpython/pull/131174/commits/e2ea2819a344982ff8abea479e0f7004b9099690
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
e2ea281https://github.com/python/cpython/pull/131174/commits/e2ea2819a344982ff8abea479e0f7004b9099690
https://github.com/python/cpython/tree/e2ea2819a344982ff8abea479e0f7004b9099690
Revert to using critical section with TYPE_LOCK.https://github.com/python/cpython/pull/131174/commits/935bfcacdb6f1dd47804e930515cc9f346683fdd
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
935bfcahttps://github.com/python/cpython/pull/131174/commits/935bfcacdb6f1dd47804e930515cc9f346683fdd
https://github.com/python/cpython/tree/935bfcacdb6f1dd47804e930515cc9f346683fdd
Merge 'origin/main' into gh-127266-type-slots-tshttps://github.com/python/cpython/pull/131174/commits/1cff44842529110994e3ded5923cdba039f38619
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
1cff448https://github.com/python/cpython/pull/131174/commits/1cff44842529110994e3ded5923cdba039f38619
https://github.com/python/cpython/tree/1cff44842529110994e3ded5923cdba039f38619
Invalidate type cache before calling watchers.https://github.com/python/cpython/pull/131174/commits/a81e9e395335c1cdf9e9ec41dcb1808d92836fba
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
a81e9e3https://github.com/python/cpython/pull/131174/commits/a81e9e395335c1cdf9e9ec41dcb1808d92836fba
https://github.com/python/cpython/tree/a81e9e395335c1cdf9e9ec41dcb1808d92836fba
Fixes for type_modified_unlocked().https://github.com/python/cpython/pull/131174/commits/f5df0c3a05afdff894d431b47c2d03c49f6cac94
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
f5df0c3https://github.com/python/cpython/pull/131174/commits/f5df0c3a05afdff894d431b47c2d03c49f6cac94
https://github.com/python/cpython/tree/f5df0c3a05afdff894d431b47c2d03c49f6cac94
Major re-work, TYPE_LOCK protects more things.https://github.com/python/cpython/pull/131174/commits/7db281c7e04c0ab4e722089910021e98b5c65a3e
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
7db281chttps://github.com/python/cpython/pull/131174/commits/7db281c7e04c0ab4e722089910021e98b5c65a3e
https://github.com/python/cpython/tree/7db281c7e04c0ab4e722089910021e98b5c65a3e
Merge 'origin/main' into gh-127266-type-slots-tshttps://github.com/python/cpython/pull/131174/commits/da2a0ad2d26e636b2945ea6d1c5d264e79fd4efe
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naschemehttps://github.com/python/cpython/commits?author=nascheme
da2a0adhttps://github.com/python/cpython/pull/131174/commits/da2a0ad2d26e636b2945ea6d1c5d264e79fd4efe
https://github.com/python/cpython/tree/da2a0ad2d26e636b2945ea6d1c5d264e79fd4efe
Fix non-debug build.https://github.com/python/cpython/pull/131174/commits/986f23a7e959a3037a500a6c5c1d0e0fea0a9da7
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
986f23ahttps://github.com/python/cpython/pull/131174/commits/986f23a7e959a3037a500a6c5c1d0e0fea0a9da7
https://github.com/python/cpython/tree/986f23a7e959a3037a500a6c5c1d0e0fea0a9da7
Revert unneeded code changes.https://github.com/python/cpython/pull/131174/commits/c404ed4b19c3b85e82c1b8e6812940e96a6e5a40
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
c404ed4https://github.com/python/cpython/pull/131174/commits/c404ed4b19c3b85e82c1b8e6812940e96a6e5a40
https://github.com/python/cpython/tree/c404ed4b19c3b85e82c1b8e6812940e96a6e5a40
Merge branch 'origin/main' into gh-127266-type-slots-tshttps://github.com/python/cpython/pull/131174/commits/55af4ba614f4355b5771ab4d6755a8cb523281ad
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
55af4bahttps://github.com/python/cpython/pull/131174/commits/55af4ba614f4355b5771ab4d6755a8cb523281ad
https://github.com/python/cpython/tree/55af4ba614f4355b5771ab4d6755a8cb523281ad
Restore commenthttps://github.com/python/cpython/pull/131174/commits/0eb77da532b67d760c76213228e815a395453be3
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
0eb77dahttps://github.com/python/cpython/pull/131174/commits/0eb77da532b67d760c76213228e815a395453be3
https://github.com/python/cpython/tree/0eb77da532b67d760c76213228e815a395453be3
Revert more changes.https://github.com/python/cpython/pull/131174/commits/16f15b2e3b62c8c95694796293927bfbbbacf183
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
16f15b2https://github.com/python/cpython/pull/131174/commits/16f15b2e3b62c8c95694796293927bfbbbacf183
https://github.com/python/cpython/tree/16f15b2e3b62c8c95694796293927bfbbbacf183
Merge 'origin/main' into gh-127266-type-slots-tshttps://github.com/python/cpython/pull/131174/commits/0c328ccb8ef37cb95af709f6e9061cab32996de3
https://github.com/nascheme
naschemehttps://github.com/python/cpython/commits?author=nascheme
0c328cchttps://github.com/python/cpython/pull/131174/commits/0c328ccb8ef37cb95af709f6e9061cab32996de3
https://github.com/python/cpython/tree/0c328ccb8ef37cb95af709f6e9061cab32996de3
Reduce item list size for a few tests.https://github.com/python/cpython/pull/131174/commits/64547e9b7fb4a9605062fdcbe026474581e0c198
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naschemehttps://github.com/python/cpython/commits?author=nascheme
64547e9https://github.com/python/cpython/pull/131174/commits/64547e9b7fb4a9605062fdcbe026474581e0c198
https://github.com/python/cpython/tree/64547e9b7fb4a9605062fdcbe026474581e0c198
Merge 'origin/main' into gh-127266-type-slots-tshttps://github.com/python/cpython/pull/131174/commits/fff1bd21ef313f501e61b45eb7d7ce479c4beb3f
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fff1bd2https://github.com/python/cpython/pull/131174/commits/fff1bd21ef313f501e61b45eb7d7ce479c4beb3f
https://github.com/python/cpython/tree/fff1bd21ef313f501e61b45eb7d7ce479c4beb3f
Minor code tidy.https://github.com/python/cpython/pull/131174/commits/5672352f32bf90fd1a9ff3e2a0bc0c4101c95915
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naschemehttps://github.com/python/cpython/commits?author=nascheme
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