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report [#33731] Fastorigin addon crashes on mesh.update()

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add a warning when python leaves the modified mesh without calling bmesh.update_edit_mesh()s.
this doesn't fix the crash but points to the likely cause.
This commit is contained in:
Campbell Barton
2013-02-12 11:04:52 +00:00
parent ddf1d987e5
commit 42feb45c5f
1 changed files with 54 additions and 0 deletions
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54
source/blender/python/bmesh/bmesh_py_types.c
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@@ -50,6 +50,8 @@
#include "bmesh_py_types_customdata.h"
#include "bmesh_py_types_meshdata.h"
static void bm_dealloc_editmode_warn(BPy_BMesh *self);
/* Common Flags
* ************ */
@@ -832,6 +834,8 @@ static PyObject *bpy_bmesh_free(BPy_BMesh *self)
if (self->bm) {
BMesh *bm = self->bm;
bm_dealloc_editmode_warn(self);
if ((self->flag & BPY_BMFLAG_IS_WRAPPED) == 0) {
BM_mesh_free(bm);
}
@@ -2813,6 +2817,8 @@ static void bpy_bmesh_dealloc(BPy_BMesh *self)
/* have have been freed by bmesh */
if (bm) {
bm_dealloc_editmode_warn(self);
BM_data_layer_free(bm, &bm->vdata, CD_BM_ELEM_PYPTR);
BM_data_layer_free(bm, &bm->edata, CD_BM_ELEM_PYPTR);
BM_data_layer_free(bm, &bm->pdata, CD_BM_ELEM_PYPTR);
@@ -3623,3 +3629,51 @@ char *BPy_BMElem_StringFromHType(const char htype)
static char ret[32];
return BPy_BMElem_StringFromHType_ex(htype, ret);
}
/* -------------------------------------------------------------------- */
/* keep at bottom */
/* BAD INCLUDES */
#include "BKE_global.h"
#include "BKE_main.h"
#include "BKE_tessmesh.h"
#include "DNA_scene_types.h"
#include "DNA_object_types.h"
#include "DNA_mesh_types.h"
#include "MEM_guardedalloc.h"
/* there are cases where this warning isnt needed, otherwise it could be made into an error */
static void bm_dealloc_warn(const char *mesh_name)
{
PySys_WriteStdout("Modified BMesh '%.200s' from a wrapped editmesh is freed without a call "
"to bmesh.update_edit_mesh(mesh, destructive=True), this is will likely cause a crash\n",
mesh_name);
}
/* this function is called on free, it should stay quite fast */
static void bm_dealloc_editmode_warn(BPy_BMesh *self)
{
if (self->flag & BPY_BMFLAG_IS_WRAPPED) {
/* likely editmesh */
BMesh *bm = self->bm;
Scene *scene;
for(scene = G.main->scene.first; scene; scene = scene->id.next) {
Base *base = scene->basact;
if (base && base->object->type == OB_MESH) {
Mesh *me = base->object->data;
BMEditMesh *em = me->edit_btmesh;
if (em && em->bm == bm) {
/* not foolproof, scripter may have added/removed verts */
if (((em->vert_index && (MEM_allocN_len(em->vert_index) / sizeof(*em->vert_index)) != bm->totvert)) ||
((em->edge_index && (MEM_allocN_len(em->edge_index) / sizeof(*em->edge_index)) != bm->totedge)) ||
((em->face_index && (MEM_allocN_len(em->face_index) / sizeof(*em->face_index)) != bm->totface)))
{
bm_dealloc_warn(me->id.name + 2);
break;
}
}
}
}
}
}