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PEP 3123: Provide forward compatibility with Python 3.0, while keeping

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backwards compatibility. Add Py_Refcnt, Py_Type, Py_Size, and
PyVarObject_HEAD_INIT.
This commit is contained in:
Martin v. Löwis 2007-07-21 06:55:02 +00:00
parent b1994b4a5d
commit 6819210b9e
129 changed files with 1090 additions and 1250 deletions
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22
Modules/gcmodule.c
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@ -239,7 +239,7 @@ update_refs(PyGC_Head *containers)
PyGC_Head *gc = containers->gc.gc_next;
for (; gc != containers; gc = gc->gc.gc_next) {
assert(gc->gc.gc_refs == GC_REACHABLE);
gc->gc.gc_refs = FROM_GC(gc)->ob_refcnt;
gc->gc.gc_refs = Py_Refcnt(FROM_GC(gc));
/* Python's cyclic gc should never see an incoming refcount
* of 0: if something decref'ed to 0, it should have been
* deallocated immediately at that time.
@ -291,7 +291,7 @@ subtract_refs(PyGC_Head *containers)
traverseproc traverse;
PyGC_Head *gc = containers->gc.gc_next;
for (; gc != containers; gc=gc->gc.gc_next) {
traverse = FROM_GC(gc)->ob_type->tp_traverse;
traverse = Py_Type(FROM_GC(gc))->tp_traverse;
(void) traverse(FROM_GC(gc),
(visitproc)visit_decref,
NULL);
@ -376,7 +376,7 @@ move_unreachable(PyGC_Head *young, PyGC_Head *unreachable)
* the next object to visit.
*/
PyObject *op = FROM_GC(gc);
traverseproc traverse = op->ob_type->tp_traverse;
traverseproc traverse = Py_Type(op)->tp_traverse;
assert(gc->gc.gc_refs > 0);
gc->gc.gc_refs = GC_REACHABLE;
(void) traverse(op,
@ -472,7 +472,7 @@ move_finalizer_reachable(PyGC_Head *finalizers)
PyGC_Head *gc = finalizers->gc.gc_next;
for (; gc != finalizers; gc = gc->gc.gc_next) {
/* Note that the finalizers list may grow during this. */
traverse = FROM_GC(gc)->ob_type->tp_traverse;
traverse = Py_Type(FROM_GC(gc))->tp_traverse;
(void) traverse(FROM_GC(gc),
(visitproc)visit_move,
(void *)finalizers);
@ -517,7 +517,7 @@ handle_weakrefs(PyGC_Head *unreachable, PyGC_Head *old)
assert(IS_TENTATIVELY_UNREACHABLE(op));
next = gc->gc.gc_next;
if (! PyType_SUPPORTS_WEAKREFS(op->ob_type))
if (! PyType_SUPPORTS_WEAKREFS(Py_Type(op)))
continue;
/* It supports weakrefs. Does it have any? */
@ -654,7 +654,7 @@ debug_cycle(char *msg, PyObject *op)
}
else if (debug & DEBUG_OBJECTS) {
PySys_WriteStderr("gc: %.100s <%.100s %p>\n",
msg, op->ob_type->tp_name, op);
msg, Py_Type(op)->tp_name, op);
}
}
@ -708,7 +708,7 @@ delete_garbage(PyGC_Head *collectable, PyGC_Head *old)
PyList_Append(garbage, op);
}
else {
if ((clear = op->ob_type->tp_clear) != NULL) {
if ((clear = Py_Type(op)->tp_clear) != NULL) {
Py_INCREF(op);
clear(op);
Py_DECREF(op);
@ -1079,7 +1079,7 @@ gc_referrers_for(PyObject *objs, PyGC_Head *list, PyObject *resultlist)
traverseproc traverse;
for (gc = list->gc.gc_next; gc != list; gc = gc->gc.gc_next) {
obj = FROM_GC(gc);
traverse = obj->ob_type->tp_traverse;
traverse = Py_Type(obj)->tp_traverse;
if (obj == objs || obj == resultlist)
continue;
if (traverse(obj, (visitproc)referrersvisit, objs)) {
@ -1136,7 +1136,7 @@ gc_get_referents(PyObject *self, PyObject *args)
if (! PyObject_IS_GC(obj))
continue;
traverse = obj->ob_type->tp_traverse;
traverse = Py_Type(obj)->tp_traverse;
if (! traverse)
continue;
if (traverse(obj, (visitproc)referentsvisit, result)) {
@ -1359,13 +1359,13 @@ _PyObject_GC_NewVar(PyTypeObject *tp, Py_ssize_t nitems)
PyVarObject *
_PyObject_GC_Resize(PyVarObject *op, Py_ssize_t nitems)
{
const size_t basicsize = _PyObject_VAR_SIZE(op->ob_type, nitems);
const size_t basicsize = _PyObject_VAR_SIZE(Py_Type(op), nitems);
PyGC_Head *g = AS_GC(op);
g = (PyGC_Head *)PyObject_REALLOC(g, sizeof(PyGC_Head) + basicsize);
if (g == NULL)
return (PyVarObject *)PyErr_NoMemory();
op = (PyVarObject *) FROM_GC(g);
op->ob_size = nitems;
Py_Size(op) = nitems;
return op;
}