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#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include "Ecore.h"
#include "ecore_private.h"
struct _Ecore_Idler {
EINA_INLIST;
ECORE_MAGIC;
Ecore_Task_Cb func;
void *data;
int references;
Eina_Bool delete_me:1;
};
static Ecore_Idler *idlers = NULL;
static Ecore_Idler *idler_current = NULL;
static int idlers_delete_me = 0;
/**
* Add an idler handler.
* @param func The function to call when idling.
* @param data The data to be passed to this @p func call.
* @return A idler handle if successfully added. NULL otherwise.
* @ingroup Idle_Group
*
* Add an idler handle to the event loop, returning a handle on success and
* NULL otherwise. The function @p func will be called repeatedly while
* no other events are ready to be processed, as long as it returns 1
* (or ECORE_CALLBACK_RENEW). A return of 0 (or ECORE_CALLBACK_CANCEL) deletes
* the idler.
*
* Idlers are useful for progressively prossessing data without blocking.
*/
EAPI Ecore_Idler *ecore_idler_add(Ecore_Task_Cb func, const void *data)
{
Ecore_Idler *ie;
if (!func)
return NULL;
ie = calloc(1, sizeof(Ecore_Idler));
if (!ie)
return NULL;
ECORE_MAGIC_SET(ie, ECORE_MAGIC_IDLER);
ie->func = func;
ie->data = (void *) data;
idlers =
(Ecore_Idler *) eina_inlist_append(EINA_INLIST_GET(idlers),
EINA_INLIST_GET(ie));
return ie;
}
/**
* Delete an idler callback from the list to be executed.
* @param idler The handle of the idler callback to delete
* @return The data pointer passed to the idler callback on success. NULL
* otherwise.
* @ingroup Idle_Group
*/
EAPI void *ecore_idler_del(Ecore_Idler * idler)
{
if (!ECORE_MAGIC_CHECK(idler, ECORE_MAGIC_IDLER)) {
ECORE_MAGIC_FAIL(idler, ECORE_MAGIC_IDLER,
"ecore_idler_del");
return NULL;
}
EINA_SAFETY_ON_TRUE_RETURN_VAL(idler->delete_me, NULL);
idler->delete_me = 1;
idlers_delete_me = 1;
return idler->data;
}
void _ecore_idler_shutdown(void)
{
Ecore_Idler *ie;
while ((ie = idlers)) {
idlers =
(Ecore_Idler *)
eina_inlist_remove(EINA_INLIST_GET(idlers),
EINA_INLIST_GET(idlers));
ECORE_MAGIC_SET(ie, ECORE_MAGIC_NONE);
free(ie);
}
idlers_delete_me = 0;
idler_current = NULL;
}
int _ecore_idler_call(void)
{
if (!idler_current) {
/* regular main loop, start from head */
idler_current = idlers;
} else {
/* recursive main loop, continue from where we were */
idler_current =
(Ecore_Idler *) EINA_INLIST_GET(idler_current)->next;
}
while (idler_current) {
Ecore_Idler *ie = (Ecore_Idler *) idler_current;
if (!ie->delete_me) {
ie->references++;
if (!ie->func(ie->data)) {
if (!ie->delete_me)
ecore_idler_del(ie);
}
ie->references--;
}
if (idler_current) /* may have changed in recursive main loops */
idler_current =
(Ecore_Idler *)
EINA_INLIST_GET(idler_current)->next;
}
if (idlers_delete_me) {
Ecore_Idler *l;
int deleted_idlers_in_use = 0;
for (l = idlers; l;) {
Ecore_Idler *ie = l;
l = (Ecore_Idler *) EINA_INLIST_GET(l)->next;
if (ie->delete_me) {
if (ie->references) {
deleted_idlers_in_use++;
continue;
}
idlers =
(Ecore_Idler *)
eina_inlist_remove(EINA_INLIST_GET
(idlers),
EINA_INLIST_GET
(ie));
ECORE_MAGIC_SET(ie, ECORE_MAGIC_NONE);
free(ie);
}
}
if (!deleted_idlers_in_use)
idlers_delete_me = 0;
}
if (idlers)
return 1;
return 0;
}
int _ecore_idler_exist(void)
{
if (idlers)
return 1;
return 0;
}
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