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Refactored some of the Py_TRACE_REFS code. New private API function 

_Py_AddToAllObjects() that simply inserts an object at the front of
the doubly-linked list of all objects.  Changed PyType_Ready() (the
 closest thing we've got to a choke point for type objects) to call
that.
This commit is contained in:
Tim Peters 2003-03-23 03:33:13 +00:00
parent 3e40c7ff5b
commit 36eb4dfb81
3 changed files with 27 additions and 10 deletions
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1
Include/object.h
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@ -582,6 +582,7 @@ PyAPI_FUNC(void) _Py_NewReference(PyObject *);
PyAPI_FUNC(void) _Py_ForgetReference(PyObject *);
PyAPI_FUNC(void) _Py_Dealloc(PyObject *);
PyAPI_FUNC(void) _Py_PrintReferences(FILE *);
PyAPI_FUNC(void) _Py_AddToAllObjects(PyObject *);
#else
/* Without Py_TRACE_REFS, there's little enough to do that we expand code

24
Objects/object.c
View File

@ -20,6 +20,16 @@ int Py_DivisionWarningFlag;
#ifdef Py_TRACE_REFS
/* Head of doubly-linked list of all objects. */
static PyObject refchain = {&refchain, &refchain};
/* Insert op at the fron of the doubly-linked list of all objects. */
void
_Py_AddToAllObjects(PyObject *op)
{
op->_ob_next = refchain._ob_next;
op->_ob_prev = &refchain;
refchain._ob_next->_ob_prev = op;
refchain._ob_next = op;
}
#endif
#ifdef COUNT_ALLOCS
@ -91,12 +101,9 @@ inc_count(PyTypeObject *tp)
type_list = tp;
#ifdef Py_TRACE_REFS
/* Also insert in the doubly-linked list of all objects. */
if (tp->_ob_next == NULL) {
PyObject *op = (PyObject *)tp;
op->_ob_next = refchain._ob_next;
op->_ob_prev = &refchain;
refchain._ob_next->_ob_prev = op;
refchain._ob_next = op;
if (tp->_ob_prev == NULL) {
assert(tp->_ob_next == NULL);
_Py_AddToAllObjects((PyObject *)tp);
}
#endif
}
@ -1956,10 +1963,7 @@ _Py_NewReference(PyObject *op)
{
_Py_INC_REFTOTAL;
op->ob_refcnt = 1;
op->_ob_next = refchain._ob_next;
op->_ob_prev = &refchain;
refchain._ob_next->_ob_prev = op;
refchain._ob_next = op;
_Py_AddToAllObjects(op);
_Py_INC_TPALLOCS(op);
}

12
Objects/typeobject.c
View File

@ -3052,6 +3052,18 @@ PyType_Ready(PyTypeObject *type)
type->tp_flags |= Py_TPFLAGS_READYING;
#ifdef Py_TRACE_REFS
/* PyType_Ready is the closest thing we have to a choke point
* for type objects, so is the best place I can think of to try
* to get type objects into the doubly-linked list of all objects.
* Still, not all type objects go thru PyType_Ready.
*/
if (type->_ob_next == NULL) {
assert(type->_ob_prev == NULL);
_Py_AddToAllObjects((PyObject *)type);
}
#endif
/* Initialize tp_base (defaults to BaseObject unless that's us) */
base = type->tp_base;
if (base == NULL && type != &PyBaseObject_Type)