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gh-112087: Store memory allocation information into _PyListArray #116529

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Merged
corona10 merged 9 commits into from
Mar 9, 2024
+113 −14
Merged

gh-112087: Store memory allocation information into _PyListArray #116529

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b98f853
gh-112087: Store memory allocation information into _PyListArray
corona10 Mar 8, 2024
d1ac2d4
nit
corona10 Mar 9, 2024
3b7d24e
Fix casting
corona10 Mar 9, 2024
460dbc4
nit
corona10 Mar 9, 2024
d429298
nit
corona10 Mar 9, 2024
eb277c4
fix
corona10 Mar 9, 2024
2252858
Address code review
corona10 Mar 9, 2024
2493543
Address code review
corona10 Mar 9, 2024
a60d9cb
Address code review
corona10 Mar 9, 2024
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Address code review
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@corona10
corona10 committed Mar 9, 2024
commit a60d9cb9d8a73968ada7dc9431f1444d83dbb427
10 changes: 5 additions & 5 deletions Objects/listobject.c
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Original file line number Diff line number Diff line change
Expand Up @@ -34,7 +34,7 @@ get_list_freelist(void)
#ifdef Py_GIL_DISABLED
typedef struct {
Py_ssize_t allocated;
PyObject *ob_item;
PyObject *ob_item[];
} _PyListArray;

static _PyListArray *
Expand Down Expand Up @@ -138,7 +138,7 @@ list_resize(PyListObject *self, Py_ssize_t newsize)
else {
target_bytes = allocated * sizeof(PyObject*);
}
memcpy(&array->ob_item, self->ob_item, target_bytes);
memcpy(array->ob_item, self->ob_item, target_bytes);
}
_Py_atomic_store_ptr_release(&self->ob_item, &array->ob_item);
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self->allocated = new_allocated;
Expand Down Expand Up @@ -186,7 +186,7 @@ list_preallocate_exact(PyListObject *self, Py_ssize_t size)
PyErr_NoMemory();
return -1;
}
items = &array->ob_item;
items = array->ob_item;
#else
items = PyMem_New(PyObject*, size);
if (items == NULL) {
Expand Down Expand Up @@ -264,7 +264,7 @@ PyList_New(Py_ssize_t size)
return PyErr_NoMemory();
}
memset(&array->ob_item, 0, size * sizeof(PyObject *));
op->ob_item = &array->ob_item;
op->ob_item = array->ob_item;
#else
op->ob_item = (PyObject **) PyMem_Calloc(size, sizeof(PyObject *));
#endif
Expand Down Expand Up @@ -294,7 +294,7 @@ list_new_prealloc(Py_ssize_t size)
Py_DECREF(op);
return PyErr_NoMemory();
}
op->ob_item = &array->ob_item;
op->ob_item = array->ob_item;
#else
op->ob_item = PyMem_New(PyObject *, size);
if (op->ob_item == NULL) {
Expand Down