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[3.13] GH-124567: Revert the Incremental GC in 3.13 (#124770)

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Revert the incremental GC in 3.13, since it's not clear that without further turning, the benefits outweigh the costs.

Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
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T. Wouters 2024-09-30 14:27:29 -07:00 • committed by GitHub
parent bc1fae89af
commit e0eb44ad49
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11 changed files with 5525 additions and 5908 deletions
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5
Include/internal/pycore_object.h
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@ -353,12 +353,11 @@ static inline void _PyObject_GC_TRACK(
filename, lineno, __func__);
PyInterpreterState *interp = _PyInterpreterState_GET();
PyGC_Head *generation0 = &interp->gc.young.head;
PyGC_Head *generation0 = interp->gc.generation0;
PyGC_Head *last = (PyGC_Head*)(generation0->_gc_prev);
_PyGCHead_SET_NEXT(last, gc);
_PyGCHead_SET_PREV(gc, last);
/* Young objects will be moved into the visited space during GC, so set the bit here */
gc->_gc_next = ((uintptr_t)generation0) | interp->gc.visited_space;
_PyGCHead_SET_NEXT(gc, generation0);
generation0->_gc_prev = (uintptr_t)gc;
#endif
}