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authorRaymond Hettinger <python@rcn.com>2004-05-30 07:26:47 (GMT)
committerRaymond Hettinger <python@rcn.com>2004-05-30 07:26:47 (GMT)
commit691d80532b0a0204e92de35ecba1472d87af6e94 (patch)
tree25297599e68d9c19c3ea51d145c9a12a60ebc190 /Modules/collectionsmodule.c
parentd70ad8a9d9c8212af6d83d2d7d08d21760829b17 (diff)
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Make sets and deques weak referencable.
Diffstat (limited to 'Modules/collectionsmodule.c')
-rw-r--r--Modules/collectionsmodule.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/Modules/collectionsmodule.c b/Modules/collectionsmodule.c
index 368f0b6..62b43aa 100644
--- a/Modules/collectionsmodule.c
+++ b/Modules/collectionsmodule.c
@@ -1,4 +1,5 @@
#include "Python.h"
+#include "structmember.h"
/* collections module implementation of a deque() datatype
Written and maintained by Raymond D. Hettinger <python@rcn.com>
@@ -32,6 +33,7 @@ typedef struct {
int leftindex;
int rightindex;
int len;
+ PyObject *weakreflist; /* List of weak references */
} dequeobject;
static PyTypeObject deque_type;
@@ -58,6 +60,7 @@ deque_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
deque->leftindex = BLOCKLEN / 2 + 1;
deque->rightindex = BLOCKLEN / 2;
deque->len = 0;
+ deque->weakreflist = NULL;
return (PyObject *)deque;
}
@@ -439,6 +442,8 @@ static void
deque_dealloc(dequeobject *deque)
{
PyObject_GC_UnTrack(deque);
+ if (deque->weakreflist != NULL)
+ PyObject_ClearWeakRefs((PyObject *) deque);
if (deque->leftblock != NULL) {
int err = deque_clear(deque);
assert(err == 0);
@@ -744,12 +749,13 @@ static PyTypeObject deque_type = {
PyObject_GenericGetAttr, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
- Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC, /* tp_flags */
+ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC |
+ Py_TPFLAGS_HAVE_WEAKREFS, /* tp_flags */
deque_doc, /* tp_doc */
(traverseproc)deque_traverse, /* tp_traverse */
(inquiry)deque_clear, /* tp_clear */
(richcmpfunc)deque_richcompare, /* tp_richcompare */
- 0, /* tp_weaklistoffset*/
+ offsetof(dequeobject, weakreflist), /* tp_weaklistoffset*/
(getiterfunc)deque_iter, /* tp_iter */
0, /* tp_iternext */
deque_methods, /* tp_methods */