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emotion: Fix refcounts related to eio use 

Inside emotion, if Eio is compiled, some asynchronous functions are used
and a refcounted struct was used to ensure safety of the code.
Unfortunately the logic didn't make much sense as emotion's private data
is used. The refcount becomes useless, the lifecycle of the data being
bound to the object itself.

Note that an actual crash is almost impossible because:
 - eio is actually quite fast
 - evas objects are kept alive for 2 frames
 - eina_freeq is used to keep eo objects' data alive for some more time

But this in theory fixes the events, as they were sent on the wrong
object. "obj" is the image object, "smartobj" was the emotion object.
This is fixed with a weak ref.

I don't think it is necessary to backport this.
This commit is contained in:
Jean-Philippe Andre 2017-09-06 21:26:57 +09:00
parent 820b8a0e6f
commit d971ca2fb8
3 changed files with 97 additions and 127 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

187
src/lib/emotion/emotion_smart.c
View File

@ -56,29 +56,24 @@
#define MY_CLASS EFL_CANVAS_VIDEO_CLASS
typedef struct _Efl_Canvas_Video_Data Efl_Canvas_Video_Data;
typedef struct _Emotion_Xattr_Data Emotion_Xattr_Data;
struct _Efl_Canvas_Video_Data
{
EINA_REFCOUNT;
Emotion_Engine_Instance *engine_instance;
const char *engine;
const char *file;
Evas_Object *smartobj;
Evas_Object *obj;
Evas_Object *bg;
Ecore_Job *job;
Efl_Vpath_File *file_obj;
Emotion_Xattr_Data *xattr;
const char *title;
#ifdef HAVE_EIO
Eio_File *load_xattr;
Eio_File *save_xattr;
#endif
struct {
const char *info;
double stat;
@ -126,6 +121,16 @@ struct _Efl_Canvas_Video_Data
Eina_Bool seeking : 1;
};
struct _Emotion_Xattr_Data
{
EINA_REFCOUNT;
Eo *obj_wref;
#ifdef HAVE_EIO
Eio_File *load;
Eio_File *save;
#endif
};
static void _mouse_move(void *data, Evas *ev, Evas_Object *obj, void *event_info);
static void _mouse_down(void *data, Evas *ev, Evas_Object *obj, void *event_info);
static void _pos_set_job(void *data);
@ -163,48 +168,26 @@ _emotion_image_data_zero(Evas_Object *img)
}
static void
_smart_data_free(Efl_Canvas_Video_Data *sd)
_xattr_data_cancel(Emotion_Xattr_Data *xattr)
{
(void) xattr;
#ifdef HAVE_EIO
/* Only cancel the load_xattr or we will loose ref to time_seek stringshare */
if (sd->load_xattr) eio_file_cancel(sd->load_xattr);
sd->load_xattr = NULL;
if (sd->save_xattr) eio_file_cancel(sd->save_xattr);
sd->save_xattr = NULL;
if (xattr->load) eio_file_cancel(xattr->load);
xattr->load = NULL;
if (xattr->save) eio_file_cancel(xattr->save);
xattr->save = NULL;
#endif
}
if (sd->file_obj)
{
efl_del(sd->file_obj);
sd->file_obj = NULL;
}
if (sd->engine_instance)
{
emotion_engine_instance_file_close(sd->engine_instance);
emotion_engine_instance_del(sd->engine_instance);
sd->engine_instance = NULL;
}
if (sd->obj) evas_object_del(sd->obj);
sd->obj = NULL;
if (sd->crop.clipper) evas_object_del(sd->crop.clipper);
sd->crop.clipper = NULL;
if (sd->bg) evas_object_del(sd->bg);
sd->bg = NULL;
if (sd->file) eina_stringshare_del(sd->file);
sd->file = NULL;
if (sd->job) ecore_job_del(sd->job);
sd->job = NULL;
if (sd->anim) ecore_animator_del(sd->anim);
sd->anim = NULL;
eina_stringshare_del(sd->progress.info);
sd->progress.info = NULL;
eina_stringshare_del(sd->ref.file);
sd->ref.file = NULL;
if (sd->engine) eina_stringshare_del(sd->engine);
sd->engine = NULL;
static void
_xattr_data_unref(Emotion_Xattr_Data *xattr)
{
EINA_REFCOUNT_UNREF(xattr) {} else return;
/* TODO: remove legacy: emotion used to have no shutdown, call automatically */
emotion_shutdown();
_xattr_data_cancel(xattr);
efl_wref_del_safe(&xattr->obj_wref);
free(xattr);
}
static void
@ -264,9 +247,7 @@ _efl_canvas_video_efl_object_constructor(Eo *obj, Efl_Canvas_Video_Data *pd EINA
EAPI Evas_Object *
emotion_object_image_get(const Evas_Object *obj)
{
Efl_Canvas_Video_Data *sd;
sd = evas_object_smart_data_get(obj);
Efl_Canvas_Video_Data *sd = efl_data_scope_safe_get(obj, MY_CLASS);
if (!sd) return NULL;
return sd->obj;
}
@ -436,13 +417,7 @@ _efl_canvas_video_efl_file_file_set(Eo *obj EINA_UNUSED, Efl_Canvas_Video_Data *
if (sd->anim) ecore_animator_del(sd->anim);
sd->anim = NULL;
#ifdef HAVE_EIO
/* Only cancel the load_xattr or we will loose ref to time_seek stringshare */
if (sd->load_xattr) eio_file_cancel(sd->load_xattr);
sd->load_xattr = NULL;
if (sd->save_xattr) eio_file_cancel(sd->save_xattr);
sd->save_xattr = NULL;
#endif
_xattr_data_cancel(sd->xattr);
return EINA_TRUE;
}
@ -1359,37 +1334,31 @@ emotion_object_priority_get(const Evas_Object *obj)
#ifdef HAVE_EIO
static void
_eio_load_xattr_cleanup(Efl_Canvas_Video_Data *sd, Eio_File *handler)
_eio_load_xattr_cleanup(Emotion_Xattr_Data *xattr, Eio_File *handler)
{
if (handler == sd->load_xattr) sd->load_xattr = NULL;
EINA_REFCOUNT_UNREF(sd)
{
if (sd->smartobj) evas_object_smart_data_set(sd->smartobj, NULL);
sd->smartobj = NULL;
_smart_data_free(sd);
}
if (handler == xattr->load) xattr->load = NULL;
_xattr_data_unref(xattr);
}
static void
_eio_load_xattr_done(void *data, Eio_File *handler, double xattr_double)
{
Efl_Canvas_Video_Data *sd = data;
Emotion_Xattr_Data *xattr = data;
emotion_object_position_set(evas_object_smart_parent_get(sd->obj), xattr_double);
efl_event_callback_call(evas_object_smart_parent_get(sd->obj), EFL_CANVAS_VIDEO_EVENT_POSITION_LOAD_DONE, NULL);
evas_object_smart_callback_call(evas_object_smart_parent_get(sd->obj), "position_load,succeed", NULL);
_eio_load_xattr_cleanup(sd, handler);
emotion_object_position_set(evas_object_smart_parent_get(xattr->obj_wref), xattr_double);
efl_event_callback_call(evas_object_smart_parent_get(xattr->obj_wref), EFL_CANVAS_VIDEO_EVENT_POSITION_LOAD_DONE, NULL);
evas_object_smart_callback_call(evas_object_smart_parent_get(xattr->obj_wref), "position_load,succeed", NULL);
_eio_load_xattr_cleanup(xattr, handler);
}
static void
_eio_load_xattr_error(void *data, Eio_File *handler, int err EINA_UNUSED)
{
Efl_Canvas_Video_Data *sd = data;
Emotion_Xattr_Data *xattr = data;
efl_event_callback_call(evas_object_smart_parent_get(sd->obj), EFL_CANVAS_VIDEO_EVENT_POSITION_LOAD_FAIL, NULL);
evas_object_smart_callback_call(evas_object_smart_parent_get(sd->obj), "position_load,failed", NULL);
_eio_load_xattr_cleanup(sd, handler);
efl_event_callback_call(evas_object_smart_parent_get(xattr->obj_wref), EFL_CANVAS_VIDEO_EVENT_POSITION_LOAD_FAIL, NULL);
evas_object_smart_callback_call(evas_object_smart_parent_get(xattr->obj_wref), "position_load,failed", NULL);
_eio_load_xattr_cleanup(xattr, handler);
}
#endif
@ -1410,15 +1379,16 @@ emotion_object_last_position_load(Evas_Object *obj)
else return;
#ifdef HAVE_EIO
if (sd->load_xattr) return;
Emotion_Xattr_Data *xattr = sd->xattr;
EINA_REFCOUNT_REF(sd);
if (xattr->load) return;
EINA_REFCOUNT_REF(xattr);
sd->load_xattr = eio_file_xattr_double_get(tmp,
"user.e.time_seek",
_eio_load_xattr_done,
_eio_load_xattr_error,
sd);
xattr->load = eio_file_xattr_double_get(tmp,
"user.e.time_seek",
_eio_load_xattr_done,
_eio_load_xattr_error,
xattr);
#else
if (eina_xattr_double_get(tmp, "user.e.time_seek", &xattr))
{
@ -1436,36 +1406,30 @@ emotion_object_last_position_load(Evas_Object *obj)
#ifdef HAVE_EIO
static void
_eio_save_xattr_cleanup(Efl_Canvas_Video_Data *sd, Eio_File *handler)
_eio_save_xattr_cleanup(Emotion_Xattr_Data *xattr, Eio_File *handler)
{
if (handler == sd->save_xattr) sd->save_xattr = NULL;
EINA_REFCOUNT_UNREF(sd)
{
if (sd->smartobj) evas_object_smart_data_set(sd->smartobj, NULL);
sd->smartobj = NULL;
_smart_data_free(sd);
}
if (handler == xattr->save) xattr->save = NULL;
_xattr_data_unref(xattr);
}
static void
_eio_save_xattr_done(void *data, Eio_File *handler)
{
Efl_Canvas_Video_Data *sd = data;
Emotion_Xattr_Data *xattr = data;
efl_event_callback_call(sd->obj, EFL_CANVAS_VIDEO_EVENT_POSITION_SAVE_DONE, NULL);
evas_object_smart_callback_call(sd->obj, "position_save,succeed", NULL);
_eio_save_xattr_cleanup(sd, handler);
efl_event_callback_call(xattr->obj_wref, EFL_CANVAS_VIDEO_EVENT_POSITION_SAVE_DONE, NULL);
evas_object_smart_callback_call(xattr->obj_wref, "position_save,succeed", NULL);
_eio_save_xattr_cleanup(xattr, handler);
}
static void
_eio_save_xattr_error(void *data, Eio_File *handler, int err EINA_UNUSED)
{
Efl_Canvas_Video_Data *sd = data;
Emotion_Xattr_Data *xattr = data;
efl_event_callback_call(sd->obj, EFL_CANVAS_VIDEO_EVENT_POSITION_SAVE_FAIL, NULL);
evas_object_smart_callback_call(sd->obj, "position_save,failed", NULL);
_eio_save_xattr_cleanup(sd, handler);
efl_event_callback_call(xattr->obj_wref, EFL_CANVAS_VIDEO_EVENT_POSITION_SAVE_FAIL, NULL);
evas_object_smart_callback_call(xattr->obj_wref, "position_save,failed", NULL);
_eio_save_xattr_cleanup(xattr, handler);
}
#endif
@ -1482,16 +1446,18 @@ emotion_object_last_position_save(Evas_Object *obj)
else if (!strstr(sd->file, "://")) tmp = sd->file;
else return;
#ifdef HAVE_EIO
if (sd->save_xattr) return;
Emotion_Xattr_Data *xattr = sd->xattr;
EINA_REFCOUNT_REF(sd);
sd->save_xattr = eio_file_xattr_double_set(tmp,
"user.e.time_seek",
emotion_object_position_get(obj),
0,
_eio_save_xattr_done,
_eio_save_xattr_error,
sd);
if (xattr->save) return;
EINA_REFCOUNT_REF(xattr);
xattr->save = eio_file_xattr_double_set(tmp,
"user.e.time_seek",
emotion_object_position_get(obj),
0,
_eio_save_xattr_done,
_eio_save_xattr_error,
xattr);
#else
if (eina_xattr_double_set(tmp, "user.e.time_seek", emotion_object_position_get(obj), 0))
{
@ -1933,14 +1899,13 @@ _pixels_get(void *data, Evas_Object *obj)
EOLIAN static void
_efl_canvas_video_efl_canvas_group_group_add(Evas_Object *obj, Efl_Canvas_Video_Data *sd)
{
Emotion_Xattr_Data *xattr;
unsigned int *pixel;
/* TODO: remove legacy: emotion used to have no init, call automatically */
emotion_init();
EINA_REFCOUNT_INIT(sd);
sd->state = EMOTION_WAKEUP;
sd->smartobj = obj;
sd->obj = evas_object_image_add(evas_object_evas_get(obj));
sd->bg = evas_object_rectangle_add(evas_object_evas_get(obj));
sd->engine = eina_stringshare_add("gstreamer1");
@ -1962,7 +1927,11 @@ _efl_canvas_video_efl_canvas_group_group_add(Evas_Object *obj, Efl_Canvas_Video_
*pixel = 0xff000000;
evas_object_image_data_set(obj, pixel);
}
evas_object_smart_data_set(obj, sd);
xattr = calloc(1, sizeof(*xattr));
EINA_REFCOUNT_INIT(xattr);
efl_wref_add(obj, &xattr->obj_wref);
sd->xattr = xattr;
}
EOLIAN static void
@ -1990,9 +1959,7 @@ _efl_canvas_video_efl_canvas_group_group_del(Evas_Object *obj EINA_UNUSED, Efl_C
sd->progress.info = NULL;
eina_stringshare_del(sd->ref.file);
sd->ref.file = NULL;
if (sd->smartobj) evas_object_smart_data_set(sd->smartobj, NULL);
sd->smartobj = NULL;
EINA_REFCOUNT_UNREF(sd) _smart_data_free(sd);
_xattr_data_unref(sd->xattr);
efl_canvas_group_del(efl_super(obj, MY_CLASS));
}

29
src/lib/evas/canvas/evas_object_smart.c
View File

@ -294,15 +294,24 @@ _efl_canvas_group_group_member_add(Eo *smart_obj, Evas_Smart_Data *o, Evas_Objec
if (!smart->is_frame_top && (smart->is_frame != obj->is_frame))
efl_canvas_object_is_frame_object_set(eo_obj, smart->is_frame);
if (o->clipped && o->constructed)
if (o->clipped)
{
Evas_Object *clipper = _smart_clipper_get(o);
Eina_Bool had_clippees = efl_canvas_object_clipees_has(clipper);
EINA_SAFETY_ON_NULL_RETURN(clipper);
efl_canvas_object_clip_set(eo_obj, clipper);
if (!had_clippees && smart->cur->visible)
efl_gfx_visible_set(clipper, 1);
if (EINA_UNLIKELY(!clipper && !o->constructed))
{
_evas_object_smart_clipped_init(smart_obj);
clipper = _smart_clipper_get(o);
}
if (clipper != eo_obj)
{
EINA_SAFETY_ON_NULL_RETURN(clipper);
efl_canvas_object_clip_set(eo_obj, clipper);
if (!had_clippees && smart->cur->visible)
efl_gfx_visible_set(clipper, 1);
}
}
evas_object_change(eo_obj, obj);
@ -675,7 +684,7 @@ _efl_canvas_group_efl_object_constructor(Eo *eo_obj, Evas_Smart_Data *sd)
obj->is_smart = EINA_TRUE;
obj->func = &object_func;
obj->private_data = efl_data_ref(eo_obj, MY_CLASS);
if (sd->clipped)
if (sd->clipped && !sd->data)
_evas_object_smart_clipped_init(eo_obj);
efl_canvas_object_type_set(eo_obj, MY_CLASS_NAME_LEGACY);
@ -771,23 +780,23 @@ _evas_object_smart_clipped_init(Evas_Object *eo_obj)
if (!cso)
{
cso = calloc(1, sizeof(*cso));
o->data = cso;
o->data_nofree = EINA_FALSE;
}
cso->evas = evas_object_evas_get(eo_obj);
clipper = evas_object_rectangle_add(cso->evas);
evas_object_static_clip_set(clipper, 1);
cso->clipper = NULL;
evas_object_smart_member_add(clipper, eo_obj);
cso->clipper = clipper;
o->clipped = 0;
evas_object_smart_member_add(clipper, eo_obj);
o->clipped = 1;
evas_object_color_set(cso->clipper, 255, 255, 255, 255);
evas_object_move(cso->clipper, -100000, -100000);
evas_object_resize(cso->clipper, 200000, 200000);
evas_object_pass_events_set(cso->clipper, 1);
evas_object_hide(cso->clipper); /* show when have something clipped to it */
efl_canvas_object_no_render_set(cso->clipper, 1);
evas_object_smart_data_set(eo_obj, cso);
}
EOLIAN static void

8
src/lib/evas/canvas/evas_object_smart_clipped.c
View File

@ -29,14 +29,8 @@ evas_object_smart_clipped_smart_del(Evas_Object *eo_obj)
{
CSO_DATA_GET_OR_RETURN(eo_obj, cso);
if (cso->clipper)
{
Evas_Object *clipper = cso->clipper;
cso->clipper = NULL;
evas_object_del(clipper);
}
_efl_canvas_group_group_members_all_del(eo_obj);
cso->clipper = NULL;
}
static void