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gh-115999: Add free-threaded specialization for FOR_ITER (#128798)

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Add free-threaded versions of existing specialization for FOR_ITER (list, tuples, fast range iterators and generators), without significantly affecting their thread-safety. (Iterating over shared lists/tuples/ranges should be fine like before. Reusing iterators between threads is not fine, like before. Sharing generators between threads is a recipe for significant crashes, like before.)
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T. Wouters 2025-03-12 16:21:46 +01:00 • committed by GitHub
parent db27aee2fe
commit de2f7da77d
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13 changed files with 469 additions and 125 deletions
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Tools/cases_generator/analyzer.py
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@ -644,11 +644,13 @@ NON_ESCAPING_FUNCTIONS = (
"_PyLong_IsNonNegativeCompact",
"_PyLong_IsZero",
"_PyManagedDictPointer_IsValues",
"_PyObject_GC_IS_SHARED",
"_PyObject_GC_IS_TRACKED",
"_PyObject_GC_MAY_BE_TRACKED",
"_PyObject_GC_TRACK",
"_PyObject_GetManagedDict",
"_PyObject_InlineValues",
"_PyObject_IsUniquelyReferenced",
"_PyObject_ManagedDictPointer",
"_PyThreadState_HasStackSpace",
"_PyTuple_FromStackRefStealOnSuccess",
@ -661,6 +663,7 @@ NON_ESCAPING_FUNCTIONS = (
"_Py_DECREF_NO_DEALLOC",
"_Py_ID",
"_Py_IsImmortal",
"_Py_IsOwnedByCurrentThread",
"_Py_LeaveRecursiveCallPy",
"_Py_LeaveRecursiveCallTstate",
"_Py_NewRef",