cpython-lru_cache-weakref: Objects/weakrefobject.c annotate

annotate Objects/weakrefobject.c @ 39496:352ffe77b71d legacy-trunk

Patch #1535500: fix segfault in BZ2File.writelines and make sure it raises the correct exceptions.

author	Georg Brandl <georg@python.org>
date	Mon, 14 Aug 2006 21:42:55 +0000
parents	12ffed927a3d
children	dbbdfc038dc9

rev	line source
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	1 #include "Python.h"
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	2 #include "structmember.h"
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	3
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	4
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	5 #define GET_WEAKREFS_LISTPTR(o) \
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	6 ((PyWeakReference **) PyObject_GET_WEAKREFS_LISTPTR(o))
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	7
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	8
39351 12ffed927a3d _PyWeakref_GetWeakrefCount() now returns a Py_ssize_t instead of long. Neal Norwitz <nnorwitz@gmail.com> parents: 38314 diff changeset	9 Py_ssize_t
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	10 _PyWeakref_GetWeakrefCount(PyWeakReference *head)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	11 {
39351 12ffed927a3d _PyWeakref_GetWeakrefCount() now returns a Py_ssize_t instead of long. Neal Norwitz <nnorwitz@gmail.com> parents: 38314 diff changeset	12 Py_ssize_t count = 0;
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	13
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	14 while (head != NULL) {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	15 ++count;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	16 head = head->wr_next;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	17 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	18 return count;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	19 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	20
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	21
32472 4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	22 static void
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	23 init_weakref(PyWeakReference self, PyObject ob, PyObject *callback)
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	24 {
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	25 self->hash = -1;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	26 self->wr_object = ob;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	27 Py_XINCREF(callback);
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	28 self->wr_callback = callback;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	29 }
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	30
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	31 static PyWeakReference *
22607 ac24c2c9bcaf Remove weakref free list. This has the side effect of fixing a memory Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 21483 diff changeset	32 new_weakref(PyObject ob, PyObject callback)
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	33 {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	34 PyWeakReference *result;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	35
22607 ac24c2c9bcaf Remove weakref free list. This has the side effect of fixing a memory Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 21483 diff changeset	36 result = PyObject_GC_New(PyWeakReference, &_PyWeakref_RefType);
ac24c2c9bcaf Remove weakref free list. This has the side effect of fixing a memory Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 21483 diff changeset	37 if (result) {
32472 4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	38 init_weakref(result, ob, callback);
22607 ac24c2c9bcaf Remove weakref free list. This has the side effect of fixing a memory Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 21483 diff changeset	39 PyObject_GC_Track(result);
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	40 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	41 return result;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	42 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	43
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	44
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	45 /* This function clears the passed-in reference and removes it from the
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	46 * list of weak references for the referent. This is the only code that
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	47 * removes an item from the doubly-linked list of weak references for an
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	48 * object; it is also responsible for clearing the callback slot.
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	49 */
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	50 static void
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	51 clear_weakref(PyWeakReference *self)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	52 {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	53 PyObject *callback = self->wr_callback;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	54
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	55 if (PyWeakref_GET_OBJECT(self) != Py_None) {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	56 PyWeakReference **list = GET_WEAKREFS_LISTPTR(
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	57 PyWeakref_GET_OBJECT(self));
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	58
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	59 if (*list == self)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	60 *list = self->wr_next;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	61 self->wr_object = Py_None;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	62 if (self->wr_prev != NULL)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	63 self->wr_prev->wr_next = self->wr_next;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	64 if (self->wr_next != NULL)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	65 self->wr_next->wr_prev = self->wr_prev;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	66 self->wr_prev = NULL;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	67 self->wr_next = NULL;
30991 14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	68 }
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	69 if (callback != NULL) {
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	70 Py_DECREF(callback);
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	71 self->wr_callback = NULL;
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	72 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	73 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	74
30991 14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	75 /* Cyclic gc uses this to just clear the passed-in reference, leaving
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	76 * the callback intact and uncalled. It must be possible to call self's
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	77 * tp_dealloc() after calling this, so self has to be left in a sane enough
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	78 * state for that to work. We expect tp_dealloc to decref the callback
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	79 * then. The reason for not letting clear_weakref() decref the callback
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	80 * right now is that if the callback goes away, that may in turn trigger
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	81 * another callback (if a weak reference to the callback exists) -- running
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	82 * arbitrary Python code in the middle of gc is a disaster. The convolution
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	83 * here allows gc to delay triggering such callbacks until the world is in
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	84 * a sane state again.
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	85 */
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	86 void
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	87 _PyWeakref_ClearRef(PyWeakReference *self)
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	88 {
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	89 PyObject *callback;
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	90
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	91 assert(self != NULL);
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	92 assert(PyWeakref_Check(self));
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	93 /* Preserve and restore the callback around clear_weakref. */
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	94 callback = self->wr_callback;
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	95 self->wr_callback = NULL;
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	96 clear_weakref(self);
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	97 self->wr_callback = callback;
14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	98 }
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	99
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	100 static void
32472 4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	101 weakref_dealloc(PyObject *self)
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	102 {
32472 4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	103 PyObject_GC_UnTrack(self);
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	104 clear_weakref((PyWeakReference *) self);
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	105 self->ob_type->tp_free(self);
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	106 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	107
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	108
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	109 static int
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	110 gc_traverse(PyWeakReference self, visitproc visit, void arg)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	111 {
37756 7b2e436a4a21 Use Py_VISIT in all tp_traverse methods, instead of traversing manually or Thomas Wouters <thomas@python.org> parents: 37304 diff changeset	112 Py_VISIT(self->wr_callback);
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	113 return 0;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	114 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	115
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	116
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	117 static int
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	118 gc_clear(PyWeakReference *self)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	119 {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	120 clear_weakref(self);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	121 return 0;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	122 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	123
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	124
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	125 static PyObject *
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	126 weakref_call(PyWeakReference self, PyObject args, PyObject *kw)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	127 {
36675 dba6494735d0 Revert backwards-incompatible const changes. Martin v. Löwis <martin@v.loewis.de> parents: 36501 diff changeset	128 static char *kwlist[] = {NULL};
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	129
36675 dba6494735d0 Revert backwards-incompatible const changes. Martin v. Löwis <martin@v.loewis.de> parents: 36501 diff changeset	130 if (PyArg_ParseTupleAndKeywords(args, kw, ":__call__", kwlist)) {
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	131 PyObject *object = PyWeakref_GET_OBJECT(self);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	132 Py_INCREF(object);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	133 return (object);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	134 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	135 return NULL;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	136 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	137
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	138
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	139 static long
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	140 weakref_hash(PyWeakReference *self)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	141 {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	142 if (self->hash != -1)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	143 return self->hash;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	144 if (PyWeakref_GET_OBJECT(self) == Py_None) {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	145 PyErr_SetString(PyExc_TypeError, "weak object has gone away");
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	146 return -1;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	147 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	148 self->hash = PyObject_Hash(PyWeakref_GET_OBJECT(self));
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	149 return self->hash;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	150 }
30991 14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	151
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	152
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	153 static PyObject *
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	154 weakref_repr(PyWeakReference *self)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	155 {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	156 char buffer[256];
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	157 if (PyWeakref_GET_OBJECT(self) == Py_None) {
28644 8e541b078edb - The repr() of a weakref object now shows the __name__ attribute of Guido van Rossum <guido@python.org> parents: 24717 diff changeset	158 PyOS_snprintf(buffer, sizeof(buffer), "<weakref at %p; dead>", self);
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	159 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	160 else {
28644 8e541b078edb - The repr() of a weakref object now shows the __name__ attribute of Guido van Rossum <guido@python.org> parents: 24717 diff changeset	161 char *name = NULL;
8e541b078edb - The repr() of a weakref object now shows the __name__ attribute of Guido van Rossum <guido@python.org> parents: 24717 diff changeset	162 PyObject *nameobj = PyObject_GetAttrString(PyWeakref_GET_OBJECT(self),
8e541b078edb - The repr() of a weakref object now shows the __name__ attribute of Guido van Rossum <guido@python.org> parents: 24717 diff changeset	163 "__name__");
8e541b078edb - The repr() of a weakref object now shows the __name__ attribute of Guido van Rossum <guido@python.org> parents: 24717 diff changeset	164 if (nameobj == NULL)
8e541b078edb - The repr() of a weakref object now shows the __name__ attribute of Guido van Rossum <guido@python.org> parents: 24717 diff changeset	165 PyErr_Clear();
8e541b078edb - The repr() of a weakref object now shows the __name__ attribute of Guido van Rossum <guido@python.org> parents: 24717 diff changeset	166 else if (PyString_Check(nameobj))
8e541b078edb - The repr() of a weakref object now shows the __name__ attribute of Guido van Rossum <guido@python.org> parents: 24717 diff changeset	167 name = PyString_AS_STRING(nameobj);
21083 d3b6401ca273 weakref_repr(), proxy_repr(): Conversion of sprintf() to Barry Warsaw <barry@python.org> parents: 21066 diff changeset	168 PyOS_snprintf(buffer, sizeof(buffer),
28644 8e541b078edb - The repr() of a weakref object now shows the __name__ attribute of Guido van Rossum <guido@python.org> parents: 24717 diff changeset	169 name ? "<weakref at %p; to '%.50s' at %p (%s)>"
8e541b078edb - The repr() of a weakref object now shows the __name__ attribute of Guido van Rossum <guido@python.org> parents: 24717 diff changeset	170 : "<weakref at %p; to '%.50s' at %p>",
8e541b078edb - The repr() of a weakref object now shows the __name__ attribute of Guido van Rossum <guido@python.org> parents: 24717 diff changeset	171 self,
21083 d3b6401ca273 weakref_repr(), proxy_repr(): Conversion of sprintf() to Barry Warsaw <barry@python.org> parents: 21066 diff changeset	172 PyWeakref_GET_OBJECT(self)->ob_type->tp_name,
28644 8e541b078edb - The repr() of a weakref object now shows the __name__ attribute of Guido van Rossum <guido@python.org> parents: 24717 diff changeset	173 PyWeakref_GET_OBJECT(self),
8e541b078edb - The repr() of a weakref object now shows the __name__ attribute of Guido van Rossum <guido@python.org> parents: 24717 diff changeset	174 name);
8e541b078edb - The repr() of a weakref object now shows the __name__ attribute of Guido van Rossum <guido@python.org> parents: 24717 diff changeset	175 Py_XDECREF(nameobj);
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	176 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	177 return PyString_FromString(buffer);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	178 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	179
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	180 /* Weak references only support equality, not ordering. Two weak references
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	181 are equal if the underlying objects are equal. If the underlying object has
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	182 gone away, they are equal if they are identical. */
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	183
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	184 static PyObject *
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	185 weakref_richcompare(PyWeakReference* self, PyWeakReference* other, int op)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	186 {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	187 if (op != Py_EQ \|\| self->ob_type != other->ob_type) {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	188 Py_INCREF(Py_NotImplemented);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	189 return Py_NotImplemented;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	190 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	191 if (PyWeakref_GET_OBJECT(self) == Py_None
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	192 \|\| PyWeakref_GET_OBJECT(other) == Py_None) {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	193 PyObject *res = self==other ? Py_True : Py_False;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	194 Py_INCREF(res);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	195 return res;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	196 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	197 return PyObject_RichCompare(PyWeakref_GET_OBJECT(self),
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	198 PyWeakref_GET_OBJECT(other), op);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	199 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	200
32472 4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	201 /* Given the head of an object's list of weak references, extract the
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	202 * two callback-less refs (ref and proxy). Used to determine if the
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	203 * shared references exist and to determine the back link for newly
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	204 * inserted references.
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	205 */
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	206 static void
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	207 get_basic_refs(PyWeakReference *head,
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	208 PyWeakReference refp, PyWeakReference proxyp)
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	209 {
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	210 *refp = NULL;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	211 *proxyp = NULL;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	212
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	213 if (head != NULL && head->wr_callback == NULL) {
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	214 /* We need to be careful that the "basic refs" aren't
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	215 subclasses of the main types. That complicates this a
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	216 little. */
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	217 if (PyWeakref_CheckRefExact(head)) {
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	218 *refp = head;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	219 head = head->wr_next;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	220 }
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	221 if (head != NULL
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	222 && head->wr_callback == NULL
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	223 && PyWeakref_CheckProxy(head)) {
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	224 *proxyp = head;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	225 /* head = head->wr_next; */
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	226 }
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	227 }
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	228 }
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	229
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	230 /* Insert 'newref' in the list after 'prev'. Both must be non-NULL. */
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	231 static void
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	232 insert_after(PyWeakReference newref, PyWeakReference prev)
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	233 {
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	234 newref->wr_prev = prev;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	235 newref->wr_next = prev->wr_next;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	236 if (prev->wr_next != NULL)
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	237 prev->wr_next->wr_prev = newref;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	238 prev->wr_next = newref;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	239 }
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	240
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	241 /* Insert 'newref' at the head of the list; 'list' points to the variable
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	242 * that stores the head.
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	243 */
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	244 static void
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	245 insert_head(PyWeakReference newref, PyWeakReference *list)
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	246 {
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	247 PyWeakReference next = list;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	248
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	249 newref->wr_prev = NULL;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	250 newref->wr_next = next;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	251 if (next != NULL)
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	252 next->wr_prev = newref;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	253 *list = newref;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	254 }
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	255
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	256 static int
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	257 parse_weakref_init_args(char funcname, PyObject args, PyObject *kwargs,
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	258 PyObject obp, PyObject callbackp)
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	259 {
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	260 /* XXX Should check that kwargs == NULL or is empty. */
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	261 return PyArg_UnpackTuple(args, funcname, 1, 2, obp, callbackp);
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	262 }
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	263
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	264 static PyObject *
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	265 weakref___new__(PyTypeObject type, PyObject args, PyObject *kwargs)
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	266 {
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	267 PyWeakReference *self = NULL;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	268 PyObject ob, callback = NULL;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	269
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	270 if (parse_weakref_init_args("__new__", args, kwargs, &ob, &callback)) {
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	271 PyWeakReference ref, proxy;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	272 PyWeakReference **list;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	273
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	274 if (!PyType_SUPPORTS_WEAKREFS(ob->ob_type)) {
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	275 PyErr_Format(PyExc_TypeError,
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	276 "cannot create weak reference to '%s' object",
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	277 ob->ob_type->tp_name);
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	278 return NULL;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	279 }
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	280 if (callback == Py_None)
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	281 callback = NULL;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	282 list = GET_WEAKREFS_LISTPTR(ob);
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	283 get_basic_refs(*list, &ref, &proxy);
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	284 if (callback == NULL && type == &_PyWeakref_RefType) {
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	285 if (ref != NULL) {
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	286 /* We can re-use an existing reference. */
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	287 Py_INCREF(ref);
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	288 return (PyObject *)ref;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	289 }
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	290 }
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	291 /* We have to create a new reference. */
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	292 /* Note: the tp_alloc() can trigger cyclic GC, so the weakref
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	293 list on ob can be mutated. This means that the ref and
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	294 proxy pointers we got back earlier may have been collected,
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	295 so we need to compute these values again before we use
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	296 them. */
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	297 self = (PyWeakReference *) (type->tp_alloc(type, 0));
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	298 if (self != NULL) {
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	299 init_weakref(self, ob, callback);
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	300 if (callback == NULL && type == &_PyWeakref_RefType) {
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	301 insert_head(self, list);
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	302 }
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	303 else {
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	304 PyWeakReference *prev;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	305
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	306 get_basic_refs(*list, &ref, &proxy);
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	307 prev = (proxy == NULL) ? ref : proxy;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	308 if (prev == NULL)
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	309 insert_head(self, list);
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	310 else
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	311 insert_after(self, prev);
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	312 }
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	313 }
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	314 }
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	315 return (PyObject *)self;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	316 }
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	317
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	318 static int
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	319 weakref___init__(PyObject self, PyObject args, PyObject *kwargs)
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	320 {
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	321 PyObject *tmp;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	322
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	323 if (parse_weakref_init_args("__init__", args, kwargs, &tmp, &tmp))
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	324 return 0;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	325 else
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	326 return 1;
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	327 }
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	328
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	329
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	330 PyTypeObject
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	331 _PyWeakref_RefType = {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	332 PyObject_HEAD_INIT(&PyType_Type)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	333 0,
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	334 "weakref",
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	335 sizeof(PyWeakReference),
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	336 0,
32472 4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	337 weakref_dealloc, /tp_dealloc/
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	338 0, /tp_print/
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	339 0, /tp_getattr/
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	340 0, /tp_setattr/
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	341 0, /tp_compare/
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	342 (reprfunc)weakref_repr, /tp_repr/
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	343 0, /tp_as_number/
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	344 0, /tp_as_sequence/
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	345 0, /tp_as_mapping/
32472 4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	346 (hashfunc)weakref_hash, /tp_hash/
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	347 (ternaryfunc)weakref_call, /tp_call/
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	348 0, /tp_str/
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	349 0, /tp_getattro/
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	350 0, /tp_setattro/
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	351 0, /tp_as_buffer/
32472 4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	352 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \| Py_TPFLAGS_HAVE_RICHCOMPARE
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	353 \| Py_TPFLAGS_BASETYPE, /tp_flags/
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	354 0, /tp_doc/
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	355 (traverseproc)gc_traverse, /tp_traverse/
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	356 (inquiry)gc_clear, /tp_clear/
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	357 (richcmpfunc)weakref_richcompare, /tp_richcompare/
32472 4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	358 0, /tp_weaklistoffset/
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	359 0, /tp_iter/
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	360 0, /tp_iternext/
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	361 0, /tp_methods/
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	362 0, /tp_members/
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	363 0, /tp_getset/
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	364 0, /tp_base/
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	365 0, /tp_dict/
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	366 0, /tp_descr_get/
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	367 0, /tp_descr_set/
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	368 0, /tp_dictoffset/
37304 79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	369 weakref___init__, /tp_init/
32472 4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	370 PyType_GenericAlloc, /tp_alloc/
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	371 weakref___new__, /tp_new/
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	372 PyObject_GC_Del, /tp_free/
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	373 };
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	374
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	375
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	376 static int
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	377 proxy_checkref(PyWeakReference *proxy)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	378 {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	379 if (PyWeakref_GET_OBJECT(proxy) == Py_None) {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	380 PyErr_SetString(PyExc_ReferenceError,
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	381 "weakly-referenced object no longer exists");
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	382 return 0;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	383 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	384 return 1;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	385 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	386
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	387
20521 cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	388 /* If a parameter is a proxy, check that it is still "live" and wrap it,
cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	389 * replacing the original value with the raw object. Raises ReferenceError
cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	390 * if the param is a dead proxy.
cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	391 */
cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	392 #define UNWRAP(o) \
cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	393 if (PyWeakref_CheckProxy(o)) { \
cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	394 if (!proxy_checkref((PyWeakReference *)o)) \
cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	395 return NULL; \
cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	396 o = PyWeakref_GET_OBJECT(o); \
cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	397 }
cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	398
21483 873291a4889e proxy_compare(): Make sure that we unwrap both objects being compared if Fred Drake <fdrake@acm.org> parents: 21339 diff changeset	399 #define UNWRAP_I(o) \
873291a4889e proxy_compare(): Make sure that we unwrap both objects being compared if Fred Drake <fdrake@acm.org> parents: 21339 diff changeset	400 if (PyWeakref_CheckProxy(o)) { \
873291a4889e proxy_compare(): Make sure that we unwrap both objects being compared if Fred Drake <fdrake@acm.org> parents: 21339 diff changeset	401 if (!proxy_checkref((PyWeakReference *)o)) \
873291a4889e proxy_compare(): Make sure that we unwrap both objects being compared if Fred Drake <fdrake@acm.org> parents: 21339 diff changeset	402 return -1; \
873291a4889e proxy_compare(): Make sure that we unwrap both objects being compared if Fred Drake <fdrake@acm.org> parents: 21339 diff changeset	403 o = PyWeakref_GET_OBJECT(o); \
873291a4889e proxy_compare(): Make sure that we unwrap both objects being compared if Fred Drake <fdrake@acm.org> parents: 21339 diff changeset	404 }
873291a4889e proxy_compare(): Make sure that we unwrap both objects being compared if Fred Drake <fdrake@acm.org> parents: 21339 diff changeset	405
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	406 #define WRAP_UNARY(method, generic) \
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	407 static PyObject * \
20521 cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	408 method(PyObject *proxy) { \
cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	409 UNWRAP(proxy); \
cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	410 return generic(proxy); \
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	411 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	412
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	413 #define WRAP_BINARY(method, generic) \
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	414 static PyObject * \
20521 cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	415 method(PyObject x, PyObject y) { \
cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	416 UNWRAP(x); \
cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	417 UNWRAP(y); \
cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	418 return generic(x, y); \
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	419 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	420
20532 bc138bc73cdd Remove an unnecessary check for NULL. Fred Drake <fdrake@acm.org> parents: 20521 diff changeset	421 /* Note that the third arg needs to be checked for NULL since the tp_call
bc138bc73cdd Remove an unnecessary check for NULL. Fred Drake <fdrake@acm.org> parents: 20521 diff changeset	422 * slot can receive NULL for this arg.
20521 cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	423 */
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	424 #define WRAP_TERNARY(method, generic) \
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	425 static PyObject * \
20521 cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	426 method(PyObject proxy, PyObject v, PyObject *w) { \
cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	427 UNWRAP(proxy); \
20532 bc138bc73cdd Remove an unnecessary check for NULL. Fred Drake <fdrake@acm.org> parents: 20521 diff changeset	428 UNWRAP(v); \
20521 cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	429 if (w != NULL) \
cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	430 UNWRAP(w); \
cb87bd97f740 When weakref proxies are involved in binary & ternary slot operations, Fred Drake <fdrake@acm.org> parents: 20280 diff changeset	431 return generic(proxy, v, w); \
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	432 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	433
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	434
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	435 /* direct slots */
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	436
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	437 WRAP_BINARY(proxy_getattr, PyObject_GetAttr)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	438 WRAP_UNARY(proxy_str, PyObject_Str)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	439 WRAP_TERNARY(proxy_call, PyEval_CallObjectWithKeywords)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	440
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	441 static PyObject *
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	442 proxy_repr(PyWeakReference *proxy)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	443 {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	444 char buf[160];
21083 d3b6401ca273 weakref_repr(), proxy_repr(): Conversion of sprintf() to Barry Warsaw <barry@python.org> parents: 21066 diff changeset	445 PyOS_snprintf(buf, sizeof(buf),
28644 8e541b078edb - The repr() of a weakref object now shows the __name__ attribute of Guido van Rossum <guido@python.org> parents: 24717 diff changeset	446 "<weakproxy at %p to %.100s at %p>", proxy,
21083 d3b6401ca273 weakref_repr(), proxy_repr(): Conversion of sprintf() to Barry Warsaw <barry@python.org> parents: 21066 diff changeset	447 PyWeakref_GET_OBJECT(proxy)->ob_type->tp_name,
d3b6401ca273 weakref_repr(), proxy_repr(): Conversion of sprintf() to Barry Warsaw <barry@python.org> parents: 21066 diff changeset	448 PyWeakref_GET_OBJECT(proxy));
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	449 return PyString_FromString(buf);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	450 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	451
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	452
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	453 static int
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	454 proxy_setattr(PyWeakReference proxy, PyObject name, PyObject *value)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	455 {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	456 if (!proxy_checkref(proxy))
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	457 return -1;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	458 return PyObject_SetAttr(PyWeakref_GET_OBJECT(proxy), name, value);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	459 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	460
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	461 static int
21483 873291a4889e proxy_compare(): Make sure that we unwrap both objects being compared if Fred Drake <fdrake@acm.org> parents: 21339 diff changeset	462 proxy_compare(PyObject proxy, PyObject v)
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	463 {
21483 873291a4889e proxy_compare(): Make sure that we unwrap both objects being compared if Fred Drake <fdrake@acm.org> parents: 21339 diff changeset	464 UNWRAP_I(proxy);
873291a4889e proxy_compare(): Make sure that we unwrap both objects being compared if Fred Drake <fdrake@acm.org> parents: 21339 diff changeset	465 UNWRAP_I(v);
873291a4889e proxy_compare(): Make sure that we unwrap both objects being compared if Fred Drake <fdrake@acm.org> parents: 21339 diff changeset	466 return PyObject_Compare(proxy, v);
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	467 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	468
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	469 /* number slots */
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	470 WRAP_BINARY(proxy_add, PyNumber_Add)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	471 WRAP_BINARY(proxy_sub, PyNumber_Subtract)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	472 WRAP_BINARY(proxy_mul, PyNumber_Multiply)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	473 WRAP_BINARY(proxy_div, PyNumber_Divide)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	474 WRAP_BINARY(proxy_mod, PyNumber_Remainder)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	475 WRAP_BINARY(proxy_divmod, PyNumber_Divmod)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	476 WRAP_TERNARY(proxy_pow, PyNumber_Power)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	477 WRAP_UNARY(proxy_neg, PyNumber_Negative)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	478 WRAP_UNARY(proxy_pos, PyNumber_Positive)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	479 WRAP_UNARY(proxy_abs, PyNumber_Absolute)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	480 WRAP_UNARY(proxy_invert, PyNumber_Invert)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	481 WRAP_BINARY(proxy_lshift, PyNumber_Lshift)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	482 WRAP_BINARY(proxy_rshift, PyNumber_Rshift)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	483 WRAP_BINARY(proxy_and, PyNumber_And)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	484 WRAP_BINARY(proxy_xor, PyNumber_Xor)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	485 WRAP_BINARY(proxy_or, PyNumber_Or)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	486 WRAP_UNARY(proxy_int, PyNumber_Int)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	487 WRAP_UNARY(proxy_long, PyNumber_Long)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	488 WRAP_UNARY(proxy_float, PyNumber_Float)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	489 WRAP_BINARY(proxy_iadd, PyNumber_InPlaceAdd)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	490 WRAP_BINARY(proxy_isub, PyNumber_InPlaceSubtract)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	491 WRAP_BINARY(proxy_imul, PyNumber_InPlaceMultiply)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	492 WRAP_BINARY(proxy_idiv, PyNumber_InPlaceDivide)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	493 WRAP_BINARY(proxy_imod, PyNumber_InPlaceRemainder)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	494 WRAP_TERNARY(proxy_ipow, PyNumber_InPlacePower)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	495 WRAP_BINARY(proxy_ilshift, PyNumber_InPlaceLshift)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	496 WRAP_BINARY(proxy_irshift, PyNumber_InPlaceRshift)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	497 WRAP_BINARY(proxy_iand, PyNumber_InPlaceAnd)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	498 WRAP_BINARY(proxy_ixor, PyNumber_InPlaceXor)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	499 WRAP_BINARY(proxy_ior, PyNumber_InPlaceOr)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	500
30991 14d321466a06 SF bug 839548: Bug in type's GC handling causes segfaults. Tim Peters <tim.peters@gmail.com> parents: 29863 diff changeset	501 static int
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	502 proxy_nonzero(PyWeakReference *proxy)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	503 {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	504 PyObject *o = PyWeakref_GET_OBJECT(proxy);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	505 if (!proxy_checkref(proxy))
32530 2451c9572edf SF bug #978308, Spurious errors taking bool of dead pro Neal Norwitz <nnorwitz@gmail.com> parents: 32472 diff changeset	506 return -1;
34847 51ba8ce8d92a SF bug #1770766: weakref proxy has incorrect __nonzero__ behavior. Raymond Hettinger <python@rcn.com> parents: 33862 diff changeset	507 return PyObject_IsTrue(o);
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	508 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	509
32472 4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	510 static void
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	511 proxy_dealloc(PyWeakReference *self)
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	512 {
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	513 if (self->wr_callback != NULL)
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	514 PyObject_GC_UnTrack((PyObject *)self);
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	515 clear_weakref(self);
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	516 PyObject_GC_Del(self);
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	517 }
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	518
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	519 /* sequence slots */
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	520
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	521 static PyObject *
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36244 diff changeset	522 proxy_slice(PyWeakReference *proxy, Py_ssize_t i, Py_ssize_t j)
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	523 {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	524 if (!proxy_checkref(proxy))
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	525 return NULL;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	526 return PySequence_GetSlice(PyWeakref_GET_OBJECT(proxy), i, j);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	527 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	528
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	529 static int
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36244 diff changeset	530 proxy_ass_slice(PyWeakReference proxy, Py_ssize_t i, Py_ssize_t j, PyObject value)
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	531 {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	532 if (!proxy_checkref(proxy))
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	533 return -1;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	534 return PySequence_SetSlice(PyWeakref_GET_OBJECT(proxy), i, j, value);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	535 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	536
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	537 static int
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	538 proxy_contains(PyWeakReference proxy, PyObject value)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	539 {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	540 if (!proxy_checkref(proxy))
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	541 return -1;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	542 return PySequence_Contains(PyWeakref_GET_OBJECT(proxy), value);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	543 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	544
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	545
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	546 /* mapping slots */
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	547
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36244 diff changeset	548 static Py_ssize_t
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	549 proxy_length(PyWeakReference *proxy)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	550 {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	551 if (!proxy_checkref(proxy))
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	552 return -1;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	553 return PyObject_Length(PyWeakref_GET_OBJECT(proxy));
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	554 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	555
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	556 WRAP_BINARY(proxy_getitem, PyObject_GetItem)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	557
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	558 static int
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	559 proxy_setitem(PyWeakReference proxy, PyObject key, PyObject *value)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	560 {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	561 if (!proxy_checkref(proxy))
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	562 return -1;
29697 1d763862d1a1 Fix SF 762891: "del p[key]" on proxy object raises SystemError() Raymond Hettinger <python@rcn.com> parents: 28644 diff changeset	563
1d763862d1a1 Fix SF 762891: "del p[key]" on proxy object raises SystemError() Raymond Hettinger <python@rcn.com> parents: 28644 diff changeset	564 if (value == NULL)
1d763862d1a1 Fix SF 762891: "del p[key]" on proxy object raises SystemError() Raymond Hettinger <python@rcn.com> parents: 28644 diff changeset	565 return PyObject_DelItem(PyWeakref_GET_OBJECT(proxy), key);
1d763862d1a1 Fix SF 762891: "del p[key]" on proxy object raises SystemError() Raymond Hettinger <python@rcn.com> parents: 28644 diff changeset	566 else
1d763862d1a1 Fix SF 762891: "del p[key]" on proxy object raises SystemError() Raymond Hettinger <python@rcn.com> parents: 28644 diff changeset	567 return PyObject_SetItem(PyWeakref_GET_OBJECT(proxy), key, value);
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	568 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	569
24717 1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	570 /* iterator slots */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	571
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	572 static PyObject *
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	573 proxy_iter(PyWeakReference *proxy)
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	574 {
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	575 if (!proxy_checkref(proxy))
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	576 return NULL;
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	577 return PyObject_GetIter(PyWeakref_GET_OBJECT(proxy));
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	578 }
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	579
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	580 static PyObject *
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	581 proxy_iternext(PyWeakReference *proxy)
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	582 {
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	583 if (!proxy_checkref(proxy))
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	584 return NULL;
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	585 return PyIter_Next(PyWeakref_GET_OBJECT(proxy));
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	586 }
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	587
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	588
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	589 static PyNumberMethods proxy_as_number = {
37304 79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	590 proxy_add, /nb_add/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	591 proxy_sub, /nb_subtract/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	592 proxy_mul, /nb_multiply/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	593 proxy_div, /nb_divide/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	594 proxy_mod, /nb_remainder/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	595 proxy_divmod, /nb_divmod/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	596 proxy_pow, /nb_power/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	597 proxy_neg, /nb_negative/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	598 proxy_pos, /nb_positive/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	599 proxy_abs, /nb_absolute/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	600 (inquiry)proxy_nonzero, /nb_nonzero/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	601 proxy_invert, /nb_invert/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	602 proxy_lshift, /nb_lshift/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	603 proxy_rshift, /nb_rshift/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	604 proxy_and, /nb_and/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	605 proxy_xor, /nb_xor/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	606 proxy_or, /nb_or/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	607 0, /nb_coerce/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	608 proxy_int, /nb_int/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	609 proxy_long, /nb_long/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	610 proxy_float, /nb_float/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	611 0, /nb_oct/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	612 0, /nb_hex/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	613 proxy_iadd, /nb_inplace_add/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	614 proxy_isub, /nb_inplace_subtract/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	615 proxy_imul, /nb_inplace_multiply/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	616 proxy_idiv, /nb_inplace_divide/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	617 proxy_imod, /nb_inplace_remainder/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	618 proxy_ipow, /nb_inplace_power/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	619 proxy_ilshift, /nb_inplace_lshift/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	620 proxy_irshift, /nb_inplace_rshift/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	621 proxy_iand, /nb_inplace_and/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	622 proxy_ixor, /nb_inplace_xor/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	623 proxy_ior, /nb_inplace_or/
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	624 };
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	625
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	626 static PySequenceMethods proxy_as_sequence = {
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36244 diff changeset	627 (lenfunc)proxy_length, /sq_length/
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	628 0, /sq_concat/
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	629 0, /sq_repeat/
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	630 0, /sq_item/
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36244 diff changeset	631 (ssizessizeargfunc)proxy_slice, /sq_slice/
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	632 0, /sq_ass_item/
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36244 diff changeset	633 (ssizessizeobjargproc)proxy_ass_slice, /sq_ass_slice/
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	634 (objobjproc)proxy_contains, /* sq_contains */
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	635 };
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	636
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	637 static PyMappingMethods proxy_as_mapping = {
37304 79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	638 (lenfunc)proxy_length, /mp_length/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	639 proxy_getitem, /mp_subscript/
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	640 (objobjargproc)proxy_setitem, /mp_ass_subscript/
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	641 };
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	642
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	643
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	644 PyTypeObject
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	645 _PyWeakref_ProxyType = {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	646 PyObject_HEAD_INIT(&PyType_Type)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	647 0,
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	648 "weakproxy",
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	649 sizeof(PyWeakReference),
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	650 0,
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	651 /* methods */
32472 4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	652 (destructor)proxy_dealloc, /* tp_dealloc */
29863 98c59bbdd8ec Remove proxy_print(), since that caused an inconsistency between Fred Drake <fdrake@acm.org> parents: 29697 diff changeset	653 0, /* tp_print */
24717 1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	654 0, /* tp_getattr */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	655 0, /* tp_setattr */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	656 proxy_compare, /* tp_compare */
37304 79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	657 (reprfunc)proxy_repr, /* tp_repr */
24717 1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	658 &proxy_as_number, /* tp_as_number */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	659 &proxy_as_sequence, /* tp_as_sequence */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	660 &proxy_as_mapping, /* tp_as_mapping */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	661 0, /* tp_hash */
37304 79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	662 0, /* tp_call */
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	663 proxy_str, /* tp_str */
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	664 proxy_getattr, /* tp_getattro */
24717 1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	665 (setattrofunc)proxy_setattr, /* tp_setattro */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	666 0, /* tp_as_buffer */
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	667 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC
24717 1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	668 \| Py_TPFLAGS_CHECKTYPES, /* tp_flags */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	669 0, /* tp_doc */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	670 (traverseproc)gc_traverse, /* tp_traverse */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	671 (inquiry)gc_clear, /* tp_clear */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	672 0, /* tp_richcompare */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	673 0, /* tp_weaklistoffset */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	674 (getiterfunc)proxy_iter, /* tp_iter */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	675 (iternextfunc)proxy_iternext, /* tp_iternext */
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	676 };
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	677
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	678
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	679 PyTypeObject
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	680 _PyWeakref_CallableProxyType = {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	681 PyObject_HEAD_INIT(&PyType_Type)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	682 0,
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	683 "weakcallableproxy",
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	684 sizeof(PyWeakReference),
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	685 0,
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	686 /* methods */
32472 4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	687 (destructor)proxy_dealloc, /* tp_dealloc */
29863 98c59bbdd8ec Remove proxy_print(), since that caused an inconsistency between Fred Drake <fdrake@acm.org> parents: 29697 diff changeset	688 0, /* tp_print */
24717 1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	689 0, /* tp_getattr */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	690 0, /* tp_setattr */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	691 proxy_compare, /* tp_compare */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	692 (unaryfunc)proxy_repr, /* tp_repr */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	693 &proxy_as_number, /* tp_as_number */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	694 &proxy_as_sequence, /* tp_as_sequence */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	695 &proxy_as_mapping, /* tp_as_mapping */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	696 0, /* tp_hash */
37304 79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	697 proxy_call, /* tp_call */
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	698 proxy_str, /* tp_str */
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36877 diff changeset	699 proxy_getattr, /* tp_getattro */
24717 1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	700 (setattrofunc)proxy_setattr, /* tp_setattro */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	701 0, /* tp_as_buffer */
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	702 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC
24717 1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	703 \| Py_TPFLAGS_CHECKTYPES, /* tp_flags */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	704 0, /* tp_doc */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	705 (traverseproc)gc_traverse, /* tp_traverse */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	706 (inquiry)gc_clear, /* tp_clear */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	707 0, /* tp_richcompare */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	708 0, /* tp_weaklistoffset */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	709 (getiterfunc)proxy_iter, /* tp_iter */
1d3d980a3186 Add support for the iterator protocol to weakref proxy objects. Fred Drake <fdrake@acm.org> parents: 22607 diff changeset	710 (iternextfunc)proxy_iternext, /* tp_iternext */
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	711 };
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	712
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	713
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	714
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	715 PyObject *
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	716 PyWeakref_NewRef(PyObject ob, PyObject callback)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	717 {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	718 PyWeakReference *result = NULL;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	719 PyWeakReference **list;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	720 PyWeakReference ref, proxy;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	721
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	722 if (!PyType_SUPPORTS_WEAKREFS(ob->ob_type)) {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	723 PyErr_Format(PyExc_TypeError,
20613 bf4b37518c14 Referencable is not a word, so don't use it in an error message <wink>. Jeremy Hylton <jeremy@alum.mit.edu> parents: 20532 diff changeset	724 "cannot create weak reference to '%s' object",
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	725 ob->ob_type->tp_name);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	726 return NULL;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	727 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	728 list = GET_WEAKREFS_LISTPTR(ob);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	729 get_basic_refs(*list, &ref, &proxy);
31449 b4bc83f2fd04 Fix bug in interpretation of the "callback" argument in the constructors for Fred Drake <fdrake@acm.org> parents: 30991 diff changeset	730 if (callback == Py_None)
b4bc83f2fd04 Fix bug in interpretation of the "callback" argument in the constructors for Fred Drake <fdrake@acm.org> parents: 30991 diff changeset	731 callback = NULL;
b4bc83f2fd04 Fix bug in interpretation of the "callback" argument in the constructors for Fred Drake <fdrake@acm.org> parents: 30991 diff changeset	732 if (callback == NULL)
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	733 /* return existing weak reference if it exists */
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	734 result = ref;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	735 if (result != NULL)
31454 d4165d12f73c Allocating a new weakref object can cause existing weakref objects for Fred Drake <fdrake@acm.org> parents: 31449 diff changeset	736 Py_INCREF(result);
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	737 else {
31454 d4165d12f73c Allocating a new weakref object can cause existing weakref objects for Fred Drake <fdrake@acm.org> parents: 31449 diff changeset	738 /* Note: new_weakref() can trigger cyclic GC, so the weakref
d4165d12f73c Allocating a new weakref object can cause existing weakref objects for Fred Drake <fdrake@acm.org> parents: 31449 diff changeset	739 list on ob can be mutated. This means that the ref and
d4165d12f73c Allocating a new weakref object can cause existing weakref objects for Fred Drake <fdrake@acm.org> parents: 31449 diff changeset	740 proxy pointers we got back earlier may have been collected,
d4165d12f73c Allocating a new weakref object can cause existing weakref objects for Fred Drake <fdrake@acm.org> parents: 31449 diff changeset	741 so we need to compute these values again before we use
d4165d12f73c Allocating a new weakref object can cause existing weakref objects for Fred Drake <fdrake@acm.org> parents: 31449 diff changeset	742 them. */
22607 ac24c2c9bcaf Remove weakref free list. This has the side effect of fixing a memory Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 21483 diff changeset	743 result = new_weakref(ob, callback);
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	744 if (result != NULL) {
32932 bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	745 get_basic_refs(*list, &ref, &proxy);
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	746 if (callback == NULL) {
32932 bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	747 if (ref == NULL)
bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	748 insert_head(result, list);
bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	749 else {
bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	750 /* Someone else added a ref without a callback
bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	751 during GC. Return that one instead of this one
bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	752 to avoid violating the invariants of the list
bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	753 of weakrefs for ob. */
bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	754 Py_DECREF(result);
bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	755 Py_INCREF(ref);
bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	756 result = ref;
bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	757 }
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	758 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	759 else {
31454 d4165d12f73c Allocating a new weakref object can cause existing weakref objects for Fred Drake <fdrake@acm.org> parents: 31449 diff changeset	760 PyWeakReference *prev;
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	761
31454 d4165d12f73c Allocating a new weakref object can cause existing weakref objects for Fred Drake <fdrake@acm.org> parents: 31449 diff changeset	762 prev = (proxy == NULL) ? ref : proxy;
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	763 if (prev == NULL)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	764 insert_head(result, list);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	765 else
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	766 insert_after(result, prev);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	767 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	768 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	769 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	770 return (PyObject *) result;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	771 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	772
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	773
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	774 PyObject *
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	775 PyWeakref_NewProxy(PyObject ob, PyObject callback)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	776 {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	777 PyWeakReference *result = NULL;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	778 PyWeakReference **list;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	779 PyWeakReference ref, proxy;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	780
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	781 if (!PyType_SUPPORTS_WEAKREFS(ob->ob_type)) {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	782 PyErr_Format(PyExc_TypeError,
20613 bf4b37518c14 Referencable is not a word, so don't use it in an error message <wink>. Jeremy Hylton <jeremy@alum.mit.edu> parents: 20532 diff changeset	783 "cannot create weak reference to '%s' object",
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	784 ob->ob_type->tp_name);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	785 return NULL;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	786 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	787 list = GET_WEAKREFS_LISTPTR(ob);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	788 get_basic_refs(*list, &ref, &proxy);
31449 b4bc83f2fd04 Fix bug in interpretation of the "callback" argument in the constructors for Fred Drake <fdrake@acm.org> parents: 30991 diff changeset	789 if (callback == Py_None)
b4bc83f2fd04 Fix bug in interpretation of the "callback" argument in the constructors for Fred Drake <fdrake@acm.org> parents: 30991 diff changeset	790 callback = NULL;
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	791 if (callback == NULL)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	792 /* attempt to return an existing weak reference if it exists */
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	793 result = proxy;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	794 if (result != NULL)
31454 d4165d12f73c Allocating a new weakref object can cause existing weakref objects for Fred Drake <fdrake@acm.org> parents: 31449 diff changeset	795 Py_INCREF(result);
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	796 else {
31454 d4165d12f73c Allocating a new weakref object can cause existing weakref objects for Fred Drake <fdrake@acm.org> parents: 31449 diff changeset	797 /* Note: new_weakref() can trigger cyclic GC, so the weakref
d4165d12f73c Allocating a new weakref object can cause existing weakref objects for Fred Drake <fdrake@acm.org> parents: 31449 diff changeset	798 list on ob can be mutated. This means that the ref and
d4165d12f73c Allocating a new weakref object can cause existing weakref objects for Fred Drake <fdrake@acm.org> parents: 31449 diff changeset	799 proxy pointers we got back earlier may have been collected,
d4165d12f73c Allocating a new weakref object can cause existing weakref objects for Fred Drake <fdrake@acm.org> parents: 31449 diff changeset	800 so we need to compute these values again before we use
d4165d12f73c Allocating a new weakref object can cause existing weakref objects for Fred Drake <fdrake@acm.org> parents: 31449 diff changeset	801 them. */
22607 ac24c2c9bcaf Remove weakref free list. This has the side effect of fixing a memory Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 21483 diff changeset	802 result = new_weakref(ob, callback);
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	803 if (result != NULL) {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	804 PyWeakReference *prev;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	805
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	806 if (PyCallable_Check(ob))
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	807 result->ob_type = &_PyWeakref_CallableProxyType;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	808 else
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	809 result->ob_type = &_PyWeakref_ProxyType;
31454 d4165d12f73c Allocating a new weakref object can cause existing weakref objects for Fred Drake <fdrake@acm.org> parents: 31449 diff changeset	810 get_basic_refs(*list, &ref, &proxy);
32932 bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	811 if (callback == NULL) {
bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	812 if (proxy != NULL) {
bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	813 /* Someone else added a proxy without a callback
bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	814 during GC. Return that one instead of this one
bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	815 to avoid violating the invariants of the list
bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	816 of weakrefs for ob. */
bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	817 Py_DECREF(result);
bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	818 Py_INCREF(result = proxy);
bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	819 goto skip_insert;
bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	820 }
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	821 prev = ref;
32932 bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	822 }
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	823 else
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	824 prev = (proxy == NULL) ? ref : proxy;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	825
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	826 if (prev == NULL)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	827 insert_head(result, list);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	828 else
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	829 insert_after(result, prev);
32932 bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	830 skip_insert:
bd3dd6b3ff97 Be more careful about maintaining the invariants; it was actually Fred Drake <fdrake@acm.org> parents: 32530 diff changeset	831 ;
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	832 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	833 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	834 return (PyObject *) result;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	835 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	836
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	837
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	838 PyObject *
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	839 PyWeakref_GetObject(PyObject *ref)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	840 {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	841 if (ref == NULL \|\| !PyWeakref_Check(ref)) {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	842 PyErr_BadInternalCall();
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	843 return NULL;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	844 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	845 return PyWeakref_GET_OBJECT(ref);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	846 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	847
33862 facb5a2f4b53 SF 1055820: weakref callback vs gc vs threads Tim Peters <tim.peters@gmail.com> parents: 32932 diff changeset	848 /* Note that there's an inlined copy-paste of handle_callback() in gcmodule.c's
facb5a2f4b53 SF 1055820: weakref callback vs gc vs threads Tim Peters <tim.peters@gmail.com> parents: 32932 diff changeset	849 * handle_weakrefs().
facb5a2f4b53 SF 1055820: weakref callback vs gc vs threads Tim Peters <tim.peters@gmail.com> parents: 32932 diff changeset	850 */
21339 525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	851 static void
525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	852 handle_callback(PyWeakReference ref, PyObject callback)
525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	853 {
38314 1fdf29a88f0e Replace PyObject_CallFunction calls with only object args Georg Brandl <georg@python.org> parents: 37756 diff changeset	854 PyObject *cbresult = PyObject_CallFunctionObjArgs(callback, ref, NULL);
21339 525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	855
525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	856 if (cbresult == NULL)
525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	857 PyErr_WriteUnraisable(callback);
525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	858 else
525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	859 Py_DECREF(cbresult);
525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	860 }
525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	861
525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	862 /* This function is called by the tp_dealloc handler to clear weak references.
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	863 *
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	864 * This iterates through the weak references for 'object' and calls callbacks
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	865 * for those references which have one. It returns when all callbacks have
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	866 * been attempted.
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	867 */
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	868 void
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	869 PyObject_ClearWeakRefs(PyObject *object)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	870 {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	871 PyWeakReference **list;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	872
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	873 if (object == NULL
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	874 \|\| !PyType_SUPPORTS_WEAKREFS(object->ob_type)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	875 \|\| object->ob_refcnt != 0) {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	876 PyErr_BadInternalCall();
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	877 return;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	878 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	879 list = GET_WEAKREFS_LISTPTR(object);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	880 /* Remove the callback-less basic and proxy references */
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	881 if (list != NULL && (list)->wr_callback == NULL) {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	882 clear_weakref(*list);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	883 if (list != NULL && (list)->wr_callback == NULL)
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	884 clear_weakref(*list);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	885 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	886 if (*list != NULL) {
21339 525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	887 PyWeakReference current = list;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36244 diff changeset	888 Py_ssize_t count = _PyWeakref_GetWeakrefCount(current);
21339 525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	889 int restore_error = PyErr_Occurred() ? 1 : 0;
525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	890 PyObject err_type, err_value, *err_tb;
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	891
21339 525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	892 if (restore_error)
525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	893 PyErr_Fetch(&err_type, &err_value, &err_tb);
525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	894 if (count == 1) {
525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	895 PyObject *callback = current->wr_callback;
525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	896
525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	897 current->wr_callback = NULL;
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	898 clear_weakref(current);
32472 4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	899 if (callback != NULL) {
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	900 handle_callback(current, callback);
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	901 Py_DECREF(callback);
4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	902 }
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	903 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	904 else {
36877 e9a7a2784e17 SF #1444030: Fix several potential defects found by Coverity. Hye-Shik Chang <hyeshik@gmail.com> parents: 36675 diff changeset	905 PyObject *tuple;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36244 diff changeset	906 Py_ssize_t i = 0;
36877 e9a7a2784e17 SF #1444030: Fix several potential defects found by Coverity. Hye-Shik Chang <hyeshik@gmail.com> parents: 36675 diff changeset	907
e9a7a2784e17 SF #1444030: Fix several potential defects found by Coverity. Hye-Shik Chang <hyeshik@gmail.com> parents: 36675 diff changeset	908 tuple = PyTuple_New(count * 2);
e9a7a2784e17 SF #1444030: Fix several potential defects found by Coverity. Hye-Shik Chang <hyeshik@gmail.com> parents: 36675 diff changeset	909 if (tuple == NULL) {
e9a7a2784e17 SF #1444030: Fix several potential defects found by Coverity. Hye-Shik Chang <hyeshik@gmail.com> parents: 36675 diff changeset	910 if (restore_error)
e9a7a2784e17 SF #1444030: Fix several potential defects found by Coverity. Hye-Shik Chang <hyeshik@gmail.com> parents: 36675 diff changeset	911 PyErr_Fetch(&err_type, &err_value, &err_tb);
e9a7a2784e17 SF #1444030: Fix several potential defects found by Coverity. Hye-Shik Chang <hyeshik@gmail.com> parents: 36675 diff changeset	912 return;
e9a7a2784e17 SF #1444030: Fix several potential defects found by Coverity. Hye-Shik Chang <hyeshik@gmail.com> parents: 36675 diff changeset	913 }
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	914
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	915 for (i = 0; i < count; ++i) {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	916 PyWeakReference *next = current->wr_next;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	917
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	918 Py_INCREF(current);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	919 PyTuple_SET_ITEM(tuple, i * 2, (PyObject *) current);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	920 PyTuple_SET_ITEM(tuple, i * 2 + 1, current->wr_callback);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	921 current->wr_callback = NULL;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	922 clear_weakref(current);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	923 current = next;
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	924 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	925 for (i = 0; i < count; ++i) {
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	926 PyObject callback = PyTuple_GET_ITEM(tuple, i 2 + 1);
21339 525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	927
32472 4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	928 if (callback != NULL) {
36244 e7880f4f53a4 Remove some shadowed variables Neal Norwitz <nnorwitz@gmail.com> parents: 35999 diff changeset	929 PyObject item = PyTuple_GET_ITEM(tuple, i 2);
e7880f4f53a4 Remove some shadowed variables Neal Norwitz <nnorwitz@gmail.com> parents: 35999 diff changeset	930 handle_callback((PyWeakReference *)item, callback);
32472 4383db77b19a Make weak references subclassable: Fred Drake <fdrake@acm.org> parents: 31454 diff changeset	931 }
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	932 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	933 Py_DECREF(tuple);
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	934 }
21339 525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	935 if (restore_error)
525c77368cd0 Make sure that when we invoke callback functions associated with weak Fred Drake <fdrake@acm.org> parents: 21083 diff changeset	936 PyErr_Restore(err_type, err_value, err_tb);
20280 97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	937 }
97cfa461d793 The weak reference implementation, separated from the weakref module. Fred Drake <fdrake@acm.org> parents: diff changeset	938 }

Mercurial > cpython-lru_cache-weakref

annotate Objects/weakrefobject.c @ 39496:352ffe77b71d legacy-trunk