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GH-100000: Cleanup and polish various watchers code #99998

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Merged
markshannon merged 7 commits into from
Dec 14, 2022
Merged

GH-100000: Cleanup and polish various watchers code #99998

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468ef72
Cleanup nits in watchers-related code
itamaro Nov 23, 2022
d380f0c
Optimize code watchers notification
itamaro Dec 4, 2022
8e2e17a
Replace invariant test with assert in type watchers notification
itamaro Dec 4, 2022
0eaed3e
Optimize func watchers notification
itamaro Dec 5, 2022
28b1d8d
Merge branch 'main' into watchers-polish
itamaro Dec 5, 2022
40044c0
Replace invariant test with assert in function watchers dispatch
itamaro Dec 5, 2022
80f9519
Merge branch 'main' into watchers-polish
itamaro Dec 13, 2022
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Replace invariant test with assert in type watchers notification
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@itamaro
itamaro committed Dec 5, 2022
commit 8e2e17a4fe748dddf4b7f900bef650814f6b894e
7 changes: 4 additions & 3 deletions Objects/typeobject.c
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Original file line number Diff line number Diff line change
Expand Up @@ -485,23 +485,24 @@ PyType_Modified(PyTypeObject *type)
}
}

// Notify registered type watchers, if any
if (type->tp_watched) {
PyInterpreterState *interp = _PyInterpreterState_GET();
int bits = type->tp_watched;
int i = 0;
while(bits && i < TYPE_MAX_WATCHERS) {
while (bits) {
assert(i < TYPE_MAX_WATCHERS);
if (bits & 1) {
PyType_WatchCallback cb = interp->type_watchers[i];
if (cb && (cb(type) < 0)) {
PyErr_WriteUnraisable((PyObject *)type);
}
}
i += 1;
i++;
bits >>= 1;
}
}


type->tp_flags &= ~Py_TPFLAGS_VALID_VERSION_TAG;
type->tp_version_tag = 0; /* 0 is not a valid version tag */
}
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