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efl/src/lib/edje/edje_message_queue.c

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#include "edje_private.h"
static void _edje_object_message_popornot_send(Evas_Object *obj, Edje_Message_Type type, int id, void *msg, Eina_Bool prop);
static int _injob = 0;
static Ecore_Job *_job = NULL;
static Ecore_Timer *_job_loss_timer = NULL;
static Eina_List *msgq = NULL;
static Eina_List *tmp_msgq = NULL;
static int tmp_msgq_processing = 0;
static int tmp_msgq_restart = 0;
/*============================================================================*
* API *
*============================================================================*/
static void
_edje_object_message_popornot_send(Evas_Object *obj, Edje_Message_Type type, int id, void *msg, Eina_Bool prop)
{
Edje *ed;
Eina_List *l;
Evas_Object *o;
ed = _edje_fetch(obj);
if (!ed) return;
_edje_message_propornot_send(ed, EDJE_QUEUE_SCRIPT, type, id, msg, prop);
EINA_LIST_FOREACH(ed->subobjs, l, o)
{
_edje_object_message_popornot_send(o, type, id, msg, EINA_TRUE);
}
}
EOLIAN void
_edje_object_message_send(Eo *obj, Edje *_pd EINA_UNUSED, Edje_Message_Type type, int id, void *msg)
{
_edje_object_message_popornot_send(obj, type, id, msg, EINA_FALSE);
}
EOLIAN void
_edje_object_message_handler_set(Eo *obj EINA_UNUSED, Edje *ed, Edje_Message_Handler_Cb func, void *data)
{
_edje_message_cb_set(ed, func, data);
}
EOLIAN void
_edje_object_message_signal_process(Eo *obj EINA_UNUSED, Edje *ed)
{
Eina_List *l, *ln, *tmpq = NULL;
Edje *lookup_ed;
Eina_List *lg;
Edje_Message *em;
Eina_List *groups = NULL;
int gotos = 0;
if (!ed) return;
groups = ed->groups;
EINA_LIST_FOREACH_SAFE(msgq, l, ln, em)
{
EINA_LIST_FOREACH(groups, lg, lookup_ed)
if (em->edje == lookup_ed)
{
tmpq = eina_list_append(tmpq, em);
msgq = eina_list_remove_list(msgq, l);
break;
}
}
/* a temporary message queue */
if (tmp_msgq)
{
EINA_LIST_FREE(tmpq, em)
tmp_msgq = eina_list_append(tmp_msgq, em);
}
else
{
tmp_msgq = tmpq;
tmpq = NULL;
}
tmp_msgq_processing++;
again:
EINA_LIST_FOREACH_SAFE(tmp_msgq, l, ln, em)
{
EINA_LIST_FOREACH(groups, lg, lookup_ed)
if (em->edje == lookup_ed)
break;
if (em->edje != lookup_ed) continue;
tmp_msgq = eina_list_remove_list(tmp_msgq, l);
if (!lookup_ed->delete_me)
{
lookup_ed->processing_messages++;
_edje_message_process(em);
_edje_message_free(em);
lookup_ed->processing_messages--;
}
else
_edje_message_free(em);
if (lookup_ed->processing_messages == 0)
{
if (lookup_ed->delete_me) _edje_del(lookup_ed);
}
// if some child callback in _edje_message_process called
// edje_object_message_signal_process() or
// edje_message_signal_process() then those will mark the restart
// flag when they finish - it mabsicammyt means tmp_msgq and
// any item in it has potentially become invalid - so that means l
// and ln could be rogue pointers, so start again from the beginning
// and skip anything that is not this object and process only what is.
// to avoid self-feeding loops allow a max of 1024 loops.
if (tmp_msgq_restart)
{
tmp_msgq_restart = 0;
gotos++;
if (gotos < 1024) goto again;
else
{
WRN("Edje is in a self-feeding message loop (> 1024 gotos needed in a row)");
goto end;
}
}
}
end:
tmp_msgq_processing--;
if (tmp_msgq_processing == 0)
tmp_msgq_restart = 0;
else
tmp_msgq_restart = 1;
}
EAPI void
edje_message_signal_process(void)
{
_edje_message_queue_process();
}
static Eina_Bool
_edje_dummy_timer(void *data EINA_UNUSED)
{
return ECORE_CALLBACK_CANCEL;
}
static void
_edje_job(void *data EINA_UNUSED)
{
if (_job_loss_timer)
{
ecore_timer_del(_job_loss_timer);
_job_loss_timer = NULL;
}
_job = NULL;
_injob++;
_edje_message_queue_process();
_injob--;
}
static Eina_Bool
_edje_job_loss_timer(void *data EINA_UNUSED)
{
_job_loss_timer = NULL;
if (!_job)
{
_job = ecore_job_add(_edje_job, NULL);
}
return ECORE_CALLBACK_CANCEL;
}
void
_edje_message_init(void)
{
}
void
_edje_message_shutdown(void)
{
_edje_message_queue_clear();
if (_job_loss_timer)
{
ecore_timer_del(_job_loss_timer);
_job_loss_timer = NULL;
}
if (_job)
{
ecore_job_del(_job);
_job = NULL;
}
}
void
_edje_message_cb_set(Edje *ed, void (*func) (void *data, Evas_Object *obj, Edje_Message_Type type, int id, void *msg), void *data)
{
Eina_List *l;
Evas_Object *o;
ed->message.func = func;
ed->message.data = data;
EINA_LIST_FOREACH(ed->subobjs, l, o)
{
Edje *edj2 = _edje_fetch(o);
if (!edj2) continue;
_edje_message_cb_set(edj2, func, data);
}
}
Edje_Message *
_edje_message_new(Edje *ed, Edje_Queue queue, Edje_Message_Type type, int id)
{
Edje_Message *em;
em = calloc(1, sizeof(Edje_Message));
if (!em) return NULL;
em->edje = ed;
em->queue = queue;
em->type = type;
em->id = id;
em->edje->message.num++;
return em;
}
void
_edje_message_free(Edje_Message *em)
{
if (em->msg)
{
int i;
switch (em->type)
{
case EDJE_MESSAGE_STRING:
{
Edje_Message_String *emsg;
emsg = (Edje_Message_String *)em->msg;
free(emsg->str);
free(emsg);
}
break;
case EDJE_MESSAGE_INT:
{
Edje_Message_Int *emsg;
emsg = (Edje_Message_Int *)em->msg;
free(emsg);
}
break;
case EDJE_MESSAGE_FLOAT:
{
Edje_Message_Float *emsg;
emsg = (Edje_Message_Float *)em->msg;
free(emsg);
}
break;
case EDJE_MESSAGE_INT_SET:
{
Edje_Message_Int_Set *emsg;
emsg = (Edje_Message_Int_Set *)em->msg;
free(emsg);
}
break;
case EDJE_MESSAGE_FLOAT_SET:
{
Edje_Message_Float_Set *emsg;
emsg = (Edje_Message_Float_Set *)em->msg;
free(emsg);
}
break;
case EDJE_MESSAGE_STRING_FLOAT:
{
Edje_Message_String_Float *emsg;
emsg = (Edje_Message_String_Float *)em->msg;
free(emsg->str);
free(emsg);
}
break;
case EDJE_MESSAGE_STRING_INT:
{
Edje_Message_String_Int *emsg;
emsg = (Edje_Message_String_Int *)em->msg;
free(emsg->str);
free(emsg);
}
break;
case EDJE_MESSAGE_STRING_FLOAT_SET:
{
Edje_Message_String_Float_Set *emsg;
emsg = (Edje_Message_String_Float_Set *)em->msg;
free(emsg->str);
free(emsg);
}
break;
case EDJE_MESSAGE_STRING_INT_SET:
{
Edje_Message_String_Int_Set *emsg;
emsg = (Edje_Message_String_Int_Set *)em->msg;
free(emsg->str);
free(emsg);
}
break;
case EDJE_MESSAGE_SIGNAL:
{
Edje_Message_Signal *emsg;
emsg = (Edje_Message_Signal *)em->msg;
if (emsg->sig) eina_stringshare_del(emsg->sig);
if (emsg->src) eina_stringshare_del(emsg->src);
if (emsg->data && (--(emsg->data->ref) == 0))
{
if (emsg->data->free_func)
{
emsg->data->free_func(emsg->data->data);
}
free(emsg->data);
}
free(emsg);
}
break;
case EDJE_MESSAGE_STRING_SET:
{
Edje_Message_String_Set *emsg;
emsg = (Edje_Message_String_Set *)em->msg;
for (i = 0; i < emsg->count; i++)
free(emsg->str[i]);
free(emsg);
}
break;
case EDJE_MESSAGE_NONE:
default:
break;
}
}
free(em);
}
void
_edje_message_propornot_send(Edje *ed, Edje_Queue queue, Edje_Message_Type type, int id, void *emsg, Eina_Bool prop)
{
/* FIXME: check all malloc & strdup fails and gracefully unroll and exit */
Edje_Message *em;
int i;
unsigned char *msg = NULL;
em = _edje_message_new(ed, queue, type, id);
if (!em) return;
em->propagated = prop;
if (_job)
{
ecore_job_del(_job);
_job = NULL;
}
if (_injob > 0)
{
if (!_job_loss_timer)
_job_loss_timer = ecore_timer_add(0.001, _edje_job_loss_timer, NULL);
}
else
{
if (!_job)
{
_job = ecore_job_add(_edje_job, NULL);
}
if (_job_loss_timer)
{
ecore_timer_del(_job_loss_timer);
_job_loss_timer = NULL;
}
}
switch (em->type)
{
case EDJE_MESSAGE_NONE:
break;
case EDJE_MESSAGE_SIGNAL:
{
Edje_Message_Signal *emsg2, *emsg3;
emsg2 = (Edje_Message_Signal *)emsg;
emsg3 = calloc(1, sizeof(Edje_Message_Signal));
if (emsg2->sig) emsg3->sig = eina_stringshare_add(emsg2->sig);
if (emsg2->src) emsg3->src = eina_stringshare_add(emsg2->src);
if (emsg2->data)
{
emsg3->data = emsg2->data;
emsg3->data->ref++;
}
msg = (unsigned char *)emsg3;
}
break;
case EDJE_MESSAGE_STRING:
{
Edje_Message_String *emsg2, *emsg3;
emsg2 = (Edje_Message_String *)emsg;
emsg3 = malloc(sizeof(Edje_Message_String));
emsg3->str = strdup(emsg2->str);
msg = (unsigned char *)emsg3;
}
break;
case EDJE_MESSAGE_INT:
{
Edje_Message_Int *emsg2, *emsg3;
emsg2 = (Edje_Message_Int *)emsg;
emsg3 = malloc(sizeof(Edje_Message_Int));
emsg3->val = emsg2->val;
msg = (unsigned char *)emsg3;
}
break;
case EDJE_MESSAGE_FLOAT:
{
Edje_Message_Float *emsg2, *emsg3;
emsg2 = (Edje_Message_Float *)emsg;
emsg3 = malloc(sizeof(Edje_Message_Float));
emsg3->val = emsg2->val;
msg = (unsigned char *)emsg3;
}
break;
case EDJE_MESSAGE_STRING_SET:
{
Edje_Message_String_Set *emsg2, *emsg3;
emsg2 = (Edje_Message_String_Set *)emsg;
emsg3 = malloc(sizeof(Edje_Message_String_Set) + ((emsg2->count - 1) * sizeof(char *)));
emsg3->count = emsg2->count;
for (i = 0; i < emsg3->count; i++)
emsg3->str[i] = strdup(emsg2->str[i]);
msg = (unsigned char *)emsg3;
}
break;
case EDJE_MESSAGE_INT_SET:
{
Edje_Message_Int_Set *emsg2, *emsg3;
emsg2 = (Edje_Message_Int_Set *)emsg;
emsg3 = malloc(sizeof(Edje_Message_Int_Set) + ((emsg2->count - 1) * sizeof(int)));
emsg3->count = emsg2->count;
for (i = 0; i < emsg3->count; i++)
emsg3->val[i] = emsg2->val[i];
msg = (unsigned char *)emsg3;
}
break;
case EDJE_MESSAGE_FLOAT_SET:
{
Edje_Message_Float_Set *emsg2, *emsg3;
emsg2 = (Edje_Message_Float_Set *)emsg;
emsg3 = malloc(sizeof(Edje_Message_Float_Set) + ((emsg2->count - 1) * sizeof(double)));
emsg3->count = emsg2->count;
for (i = 0; i < emsg3->count; i++)
emsg3->val[i] = emsg2->val[i];
msg = (unsigned char *)emsg3;
}
break;
case EDJE_MESSAGE_STRING_INT:
{
Edje_Message_String_Int *emsg2, *emsg3;
emsg2 = (Edje_Message_String_Int *)emsg;
emsg3 = malloc(sizeof(Edje_Message_String_Int));
emsg3->str = strdup(emsg2->str);
emsg3->val = emsg2->val;
msg = (unsigned char *)emsg3;
}
break;
case EDJE_MESSAGE_STRING_FLOAT:
{
Edje_Message_String_Float *emsg2, *emsg3;
emsg2 = (Edje_Message_String_Float *)emsg;
emsg3 = malloc(sizeof(Edje_Message_String_Float));
emsg3->str = strdup(emsg2->str);
emsg3->val = emsg2->val;
msg = (unsigned char *)emsg3;
}
break;
case EDJE_MESSAGE_STRING_INT_SET:
{
Edje_Message_String_Int_Set *emsg2, *emsg3;
emsg2 = (Edje_Message_String_Int_Set *)emsg;
emsg3 = malloc(sizeof(Edje_Message_String_Int_Set) + ((emsg2->count - 1) * sizeof(int)));
emsg3->str = strdup(emsg2->str);
emsg3->count = emsg2->count;
for (i = 0; i < emsg3->count; i++)
emsg3->val[i] = emsg2->val[i];
msg = (unsigned char *)emsg3;
}
break;
case EDJE_MESSAGE_STRING_FLOAT_SET:
{
Edje_Message_String_Float_Set *emsg2, *emsg3;
emsg2 = (Edje_Message_String_Float_Set *)emsg;
emsg3 = malloc(sizeof(Edje_Message_String_Float_Set) + ((emsg2->count - 1) * sizeof(double)));
emsg3->str = strdup(emsg2->str);
emsg3->count = emsg2->count;
for (i = 0; i < emsg3->count; i++)
emsg3->val[i] = emsg2->val[i];
msg = (unsigned char *)emsg3;
}
break;
default:
break;
}
em->msg = msg;
msgq = eina_list_append(msgq, em);
}
void
_edje_util_message_send(Edje *ed, Edje_Queue queue, Edje_Message_Type type, int id, void *emsg)
{
_edje_message_propornot_send(ed, queue, type, id, emsg, EINA_FALSE);
}
void
_edje_message_parameters_push(Edje_Message *em)
{
int i;
/* these params ALWAYS go on */
/* first param is the message type - always */
embryo_parameter_cell_push(em->edje->collection->script,
(Embryo_Cell)em->type);
/* 2nd param is the integer of the event id - always there */
embryo_parameter_cell_push(em->edje->collection->script,
(Embryo_Cell)em->id);
/* the rest is varags of whatever is in the msg */
switch (em->type)
{
case EDJE_MESSAGE_NONE:
break;
case EDJE_MESSAGE_STRING:
embryo_parameter_string_push(em->edje->collection->script,
((Edje_Message_String *)em->msg)->str);
break;
case EDJE_MESSAGE_INT:
{
Embryo_Cell v;
v = (Embryo_Cell)((Edje_Message_Int *)em->msg)->val;
embryo_parameter_cell_array_push(em->edje->collection->script, &v, 1);
}
break;
case EDJE_MESSAGE_FLOAT:
{
Embryo_Cell v;
float fv;
fv = ((Edje_Message_Float *)em->msg)->val;
v = EMBRYO_FLOAT_TO_CELL(fv);
embryo_parameter_cell_array_push(em->edje->collection->script, &v, 1);
}
break;
case EDJE_MESSAGE_STRING_SET:
for (i = 0; i < ((Edje_Message_String_Set *)em->msg)->count; i++)
embryo_parameter_string_push(em->edje->collection->script,
((Edje_Message_String_Set *)em->msg)->str[i]);
break;
case EDJE_MESSAGE_INT_SET:
for (i = 0; i < ((Edje_Message_Int_Set *)em->msg)->count; i++)
{
Embryo_Cell v;
v = (Embryo_Cell)((Edje_Message_Int_Set *)em->msg)->val[i];
embryo_parameter_cell_array_push(em->edje->collection->script, &v, 1);
}
break;
case EDJE_MESSAGE_FLOAT_SET:
for (i = 0; i < ((Edje_Message_Float_Set *)em->msg)->count; i++)
{
Embryo_Cell v;
float fv;
fv = ((Edje_Message_Float_Set *)em->msg)->val[i];
v = EMBRYO_FLOAT_TO_CELL(fv);
embryo_parameter_cell_array_push(em->edje->collection->script, &v, 1);
}
break;
case EDJE_MESSAGE_STRING_INT:
embryo_parameter_string_push(em->edje->collection->script,
((Edje_Message_String_Int *)em->msg)->str);
{
Embryo_Cell v;
v = (Embryo_Cell)((Edje_Message_String_Int *)em->msg)->val;
embryo_parameter_cell_array_push(em->edje->collection->script, &v, 1);
}
break;
case EDJE_MESSAGE_STRING_FLOAT:
embryo_parameter_string_push(em->edje->collection->script,
((Edje_Message_String_Float *)em->msg)->str);
{
Embryo_Cell v;
float fv;
fv = ((Edje_Message_String_Float *)em->msg)->val;
v = EMBRYO_FLOAT_TO_CELL(fv);
embryo_parameter_cell_array_push(em->edje->collection->script, &v, 1);
}
break;
case EDJE_MESSAGE_STRING_INT_SET:
embryo_parameter_string_push(em->edje->collection->script,
((Edje_Message_String_Int_Set *)em->msg)->str);
for (i = 0; i < ((Edje_Message_String_Int_Set *)em->msg)->count; i++)
{
Embryo_Cell v;
v = (Embryo_Cell)((Edje_Message_String_Int_Set *)em->msg)->val[i];
embryo_parameter_cell_array_push(em->edje->collection->script, &v, 1);
}
break;
case EDJE_MESSAGE_STRING_FLOAT_SET:
embryo_parameter_string_push(em->edje->collection->script,
((Edje_Message_String_Float_Set *)em->msg)->str);
for (i = 0; i < ((Edje_Message_String_Float_Set *)em->msg)->count; i++)
{
Embryo_Cell v;
float fv;
fv = ((Edje_Message_String_Float_Set *)em->msg)->val[i];
v = EMBRYO_FLOAT_TO_CELL(fv);
embryo_parameter_cell_array_push(em->edje->collection->script, &v, 1);
}
break;
default:
break;
}
}
void
_edje_message_process(Edje_Message *em)
{
Embryo_Function fn;
void *pdata;
int ret;
/* signals are only handled one way */
if (em->type == EDJE_MESSAGE_SIGNAL)
{
_edje_emit_handle(em->edje,
((Edje_Message_Signal *)em->msg)->sig,
((Edje_Message_Signal *)em->msg)->src,
((Edje_Message_Signal *)em->msg)->data,
em->propagated);
return;
}
/* if this has been queued up for the app then just call the callback */
if (em->queue == EDJE_QUEUE_APP)
{
if (em->edje->message.func)
em->edje->message.func(em->edje->message.data, em->edje->obj,
em->type, em->id, em->msg);
return;
}
/* now this message is destined for the script message handler fn */
if (!(em->edje->collection)) return;
if (em->edje->L)
{
_edje_lua_script_only_message(em->edje, em);
return;
}
fn = embryo_program_function_find(em->edje->collection->script, "message");
if (fn == EMBRYO_FUNCTION_NONE) return;
/* reset the engine */
_edje_embryo_script_reset(em->edje);
_edje_message_parameters_push(em);
embryo_program_vm_push(em->edje->collection->script);
_edje_embryo_globals_init(em->edje);
pdata = embryo_program_data_get(em->edje->collection->script);
embryo_program_data_set(em->edje->collection->script, em->edje);
embryo_program_max_cycle_run_set(em->edje->collection->script, 5000000);
ret = embryo_program_run(em->edje->collection->script, fn);
if (ret == EMBRYO_PROGRAM_FAIL)
{
ERR("ERROR with embryo script. "
"OBJECT NAME: '%s', "
"OBJECT FILE: '%s', "
"ENTRY POINT: '%s', "
"ERROR: '%s'",
em->edje->collection->part,
em->edje->file->path,
"message",
embryo_error_string_get(embryo_program_error_get(em->edje->collection->script)));
}
else if (ret == EMBRYO_PROGRAM_TOOLONG)
{
ERR("ERROR with embryo script. "
"OBJECT NAME: '%s', "
"OBJECT FILE: '%s', "
"ENTRY POINT: '%s', "
"ERROR: 'Script exceeded maximum allowed cycle count of %i'",
em->edje->collection->part,
em->edje->file->path,
"message",
embryo_program_max_cycle_run_get(em->edje->collection->script));
}
embryo_program_data_set(em->edje->collection->script, pdata);
embryo_program_vm_pop(em->edje->collection->script);
}
void
_edje_message_queue_process(void)
{
int i;
if (!msgq) return;
/* allow the message queue to feed itself up to 8 times before forcing */
/* us to go back to normal processing and let a 0 timeout deal with it */
for (i = 0; (i < 8) && (msgq); i++)
{
/* a temporary message queue */
if (tmp_msgq)
{
while (msgq)
{
tmp_msgq = eina_list_append(tmp_msgq, msgq->data);
msgq = eina_list_remove_list(msgq, msgq);
}
}
else
{
tmp_msgq = msgq;
msgq = NULL;
}
tmp_msgq_processing++;
while (tmp_msgq)
{
Edje_Message *em;
Edje *ed;
em = tmp_msgq->data;
ed = em->edje;
tmp_msgq = eina_list_remove_list(tmp_msgq, tmp_msgq);
em->edje->message.num--;
if (!ed->delete_me)
{
ed->processing_messages++;
_edje_message_process(em);
_edje_message_free(em);
ed->processing_messages--;
}
else
_edje_message_free(em);
if (ed->processing_messages == 0)
{
if (ed->delete_me) _edje_del(ed);
}
}
tmp_msgq_processing--;
if (tmp_msgq_processing == 0)
tmp_msgq_restart = 0;
else
tmp_msgq_restart = 1;
}
/* if the message queue filled again set a timer to expire in 0.0 sec */
/* to get the idle enterer to be run again */
if (msgq)
{
static int self_feed_debug = -1;
if (self_feed_debug == -1)
{
const char *s = getenv("EDJE_SELF_FEED_DEBUG");
if (s) self_feed_debug = atoi(s);
else self_feed_debug = 0;
}
if (self_feed_debug)
{
WRN("Edje is in a self-feeding message loop (> 8 loops needed)");
}
ecore_timer_add(0.0, _edje_dummy_timer, NULL);
}
}
void
_edje_message_queue_clear(void)
{
while (msgq)
{
Edje_Message *em;
em = msgq->data;
msgq = eina_list_remove_list(msgq, msgq);
em->edje->message.num--;
_edje_message_free(em);
}
while (tmp_msgq)
{
Edje_Message *em;
em = tmp_msgq->data;
tmp_msgq = eina_list_remove_list(tmp_msgq, tmp_msgq);
em->edje->message.num--;
_edje_message_free(em);
}
}
void
_edje_message_del(Edje *ed)
{
Eina_List *l;
if (ed->message.num <= 0) return;
/* delete any messages on the main queue for this edje object */
for (l = msgq; l; )
{
Edje_Message *em;
Eina_List *lp;
em = eina_list_data_get(l);
lp = l;
l = eina_list_next(l);
if (em->edje == ed)
{
msgq = eina_list_remove_list(msgq, lp);
em->edje->message.num--;
_edje_message_free(em);
}
if (ed->message.num <= 0) return;
}
/* delete any on the processing queue */
for (l = tmp_msgq; l; )
{
Edje_Message *em;
Eina_List *lp;
em = eina_list_data_get(l);
lp = l;
l = eina_list_next(l);
if (em->edje == ed)
{
tmp_msgq = eina_list_remove_list(tmp_msgq, lp);
em->edje->message.num--;
_edje_message_free(em);
}
if (ed->message.num <= 0) return;
}
}
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