[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [35305] trunk/blender/source/blender/ python/intern/bpy_rna.c: simplify rna internal weakref use.
Campbell Barton
ideasman42 at gmail.com
Wed Mar 2 17:56:13 CET 2011
Revision: 35305
http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=35305
Author: campbellbarton
Date: 2011-03-02 16:56:13 +0000 (Wed, 02 Mar 2011)
Log Message:
-----------
simplify rna internal weakref use.
Modified Paths:
--------------
trunk/blender/source/blender/python/intern/bpy_rna.c
Modified: trunk/blender/source/blender/python/intern/bpy_rna.c
===================================================================
--- trunk/blender/source/blender/python/intern/bpy_rna.c 2011-03-02 16:52:09 UTC (rev 35304)
+++ trunk/blender/source/blender/python/intern/bpy_rna.c 2011-03-02 16:56:13 UTC (rev 35305)
@@ -135,6 +135,8 @@
#endif
#ifdef USE_PYRNA_INVALIDATE_WEAKREF
+// #define DEBUG_RNA_WEAKREF
+
struct GHash *id_weakref_pool= NULL;
static PyObject *id_free_weakref_cb(PyObject *weakinfo_pair, PyObject *weakref);
static PyMethodDef id_free_weakref_cb_def= {"id_free_weakref_cb", (PyCFunction)id_free_weakref_cb, METH_O, NULL};
@@ -154,7 +156,8 @@
}
if(weakinfo_list==NULL) {
- weakinfo_list= PyList_New(0);
+ weakinfo_list= PyList_New(1);
+ PyList_SET_ITEM(weakinfo_list, 0, PyCapsule_New(id, NULL, NULL)); /* list owns the capsule */
BLI_ghash_insert(id_weakref_pool, (void *)id, weakinfo_list);
}
@@ -162,26 +165,20 @@
}
/* called from pyrna_struct_CreatePyObject() and pyrna_prop_CreatePyObject() */
-void id_weakref_pool_add(ID *id, BPy_DummyPointerRNA* pyrna)
+void id_weakref_pool_add(ID *id, BPy_DummyPointerRNA *pyrna)
{
PyObject *weakref;
PyObject *weakref_cb_py;
/* create a new function instance and insert the list as 'self' so we can remove ourself from it */
PyObject *weakinfo_list= id_weakref_pool_get(id); /* new or existing */
- PyObject *weakinfo_pair= PyTuple_New(2);
- PyTuple_SET_ITEM(weakinfo_pair, 0, weakinfo_list);
- Py_INCREF(weakinfo_list); /* increase the reference because the ghash owns as well as the tuple */
- PyTuple_SET_ITEM(weakinfo_pair, 1, PyCapsule_New(id, NULL, NULL)); /* only tuple owns */
- weakref_cb_py= PyCFunction_New(&id_free_weakref_cb_def, weakinfo_pair);
- Py_DECREF(weakinfo_pair); /* functions 'self' owns 'weakinfo_pair' now */
+ weakref_cb_py= PyCFunction_New(&id_free_weakref_cb_def, weakinfo_list);
-
/* add weakref to weakinfo_list list */
weakref= PyWeakref_NewRef((PyObject *)pyrna, weakref_cb_py);
// // EEK!!!, this causes an error if its added back with UV layout export!!!
-// Py_DECREF(weakref_cb_py); /* function owned by the weakref now */
+ Py_DECREF(weakref_cb_py); /* function owned by the weakref now */
/* important to add at the end, since first removal looks at the end */
PyList_Append(weakinfo_list, weakref);
@@ -189,16 +186,17 @@
}
static void id_release_weakref(struct ID *id);
-static PyObject *id_free_weakref_cb(PyObject *weakinfo_pair, PyObject *weakref)
+static PyObject *id_free_weakref_cb(PyObject *weakinfo_list, PyObject *weakref)
{
-
/* important to search backwards */
- PyObject *weakinfo_list= PyTuple_GET_ITEM(weakinfo_pair, 0);
unsigned int i= PyList_GET_SIZE(weakinfo_list);
const unsigned int last_index= i - 1;
+ int found= FALSE;
- while(i--) {
+ /* first item is reserved for capsule */
+ while(i-- > 1) {
if(PyList_GET_ITEM(weakinfo_list, i) == weakref) {
+ found= TRUE;
/* swap */
if(i != last_index) {
PyList_SET_ITEM(weakinfo_list, i, PyList_GET_ITEM(weakinfo_list, last_index));
@@ -208,12 +206,13 @@
PyList_SetSlice(weakinfo_list, last_index, PY_SSIZE_T_MAX, NULL);
Py_DECREF(weakref);
-/*DEBUG*/ //printf("bprna_weakref_cb: %p size is %d\n", weakref, last_index + 1);
-
- /* optional, free the list once its 0 size
+#ifdef DEBUG_RNA_WEAKREF
+ fprintf(stdout, " id_free_weakref_cb: %p size is %d\n", weakref, last_index + 1);
+#endif
+ /* optional, free the list once its 1 size
* to keep the ID hash lookups fast by not allowing manu empty items to exist */
- if(last_index == 0) {
- PyObject *weakinfo_id= PyTuple_GET_ITEM(weakinfo_pair, 1);
+ if(last_index == 1) {
+ PyObject *weakinfo_id= PyList_GET_ITEM(weakinfo_list, 0);
ID *id= PyCapsule_GetPointer(weakinfo_id, NULL);
/* the list is empty, just free it */
@@ -223,6 +222,8 @@
}
}
+ assert(found == TRUE);
+
Py_RETURN_NONE;
}
@@ -232,11 +233,15 @@
if(weakinfo_list) {
unsigned int i= PyList_GET_SIZE(weakinfo_list);
-/*DEBUG*/ //printf("BPY_id_release: '%s', %d items\n", id->name, i);
-
- while(i--) {
+#ifdef DEBUG_RNA_WEAKREF
+ fprintf(stdout, "id_release_weakref: '%s', %d items\n", id->name, i - 1);
+#endif
+ while(i-- > 1) {
PyObject *item= PyWeakref_GET_OBJECT(PyList_GET_ITEM(weakinfo_list, i));
if(item != Py_None) {
+#ifdef DEBUG_RNA_WEAKREF
+ PyC_ObSpit("id_release_weakref item ", item);
+#endif
pyrna_invalidate((BPy_DummyPointerRNA *)item);
}
}
@@ -245,7 +250,9 @@
Py_DECREF(weakinfo_list);
if(BLI_ghash_size(id_weakref_pool) == 0) {
-/*DEBUG*/ //printf("BPY_id_release: freeing global pool\n");
+#ifdef DEBUG_RNA_WEAKREF
+ fprintf(stdout, "id_release_weakref: freeing global pool\n");
+#endif
BLI_ghash_free(id_weakref_pool, NULL, NULL);
id_weakref_pool= NULL;
}
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