forked from enlightenment/efl
265 lines
7.1 KiB
C
265 lines
7.1 KiB
C
#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <stdlib.h>
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#include "Ecore.h"
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#include "ecore_private.h"
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#include "Eo.h"
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#define MY_CLASS ECORE_IDLE_EXITER_CLASS
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#define MY_CLASS_NAME "ecore_idle_exiter"
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EAPI Eo_Op ECORE_IDLE_EXITER_BASE_ID = EO_NOOP;
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struct _Ecore_Idle_Exiter_Private_Data
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{
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EINA_INLIST;
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Ecore_Idle_Exiter *obj;
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Ecore_Task_Cb func;
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void *data;
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int references;
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Eina_Bool delete_me : 1;
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};
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typedef struct _Ecore_Idle_Exiter_Private_Data Ecore_Idle_Exiter_Private_Data;
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static Ecore_Idle_Exiter_Private_Data *idle_exiters = NULL;
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static Ecore_Idle_Exiter_Private_Data *idle_exiter_current = NULL;
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static int idle_exiters_delete_me = 0;
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static void *
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_ecore_idle_exiter_del(Ecore_Idle_Exiter *idle_exiter);
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/**
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* @addtogroup Ecore_Idle_Group
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*
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* @{
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*/
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/**
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* Add an idle exiter handler.
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* @param func The function to call when exiting an idle state.
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* @param data The data to be passed to the @p func call
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* @return A handle to the idle exiter callback on success. NULL otherwise.
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* @note The function func will be called every time the main loop is exiting
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* idle state, as long as it returns 1 (or ECORE_CALLBACK_RENEW). A return of 0
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* (or ECORE_CALLBACK_CANCEL) deletes the idle exiter.
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*/
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EAPI Ecore_Idle_Exiter *
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ecore_idle_exiter_add(Ecore_Task_Cb func,
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const void *data)
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{
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Ecore_Idle_Exiter *ie = NULL;
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ie = eo_add_custom(MY_CLASS, _ecore_parent, ecore_idle_exiter_constructor(func, data));
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eo_unref(ie);
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return ie;
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}
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static void
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_idle_exiter_constructor(Eo *obj, void *_pd, va_list *list EINA_UNUSED)
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{
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Ecore_Task_Cb func = va_arg(*list, Ecore_Task_Cb);
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const void *data = va_arg(*list, const void *);
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_ecore_lock();
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if (EINA_UNLIKELY(!eina_main_loop_is()))
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{
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eo_error_set(obj);
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EINA_MAIN_LOOP_CHECK_RETURN;
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}
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Ecore_Idle_Exiter_Private_Data *ie = _pd;
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ie->obj = obj;
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eo_do_super(obj, eo_constructor());
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eo_manual_free_set(obj, EINA_TRUE);
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if (!func)
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{
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eo_error_set(obj);
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ERR("callback function must be set up for an object of class: '%s'", MY_CLASS_NAME);
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return;
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}
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ie->func = func;
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ie->data = (void *)data;
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idle_exiters = (Ecore_Idle_Exiter_Private_Data *)eina_inlist_append(EINA_INLIST_GET(idle_exiters), EINA_INLIST_GET(ie));
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_ecore_unlock();
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}
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static void
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_constructor(Eo *obj, void *_pd EINA_UNUSED, va_list *list EINA_UNUSED)
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{
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eo_error_set(obj);
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ERR("only custom constructor can be used with '%s' class", MY_CLASS_NAME);
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}
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/**
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* Delete an idle exiter handler from the list to be run on exiting idle state.
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* @param idle_exiter The idle exiter to delete
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* @return The data pointer that was being being passed to the handler if
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* successful. NULL otherwise.
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*/
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EAPI void *
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ecore_idle_exiter_del(Ecore_Idle_Exiter *idle_exiter)
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{
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void *data;
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EINA_MAIN_LOOP_CHECK_RETURN_VAL(NULL);
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_ecore_lock();
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data = _ecore_idle_exiter_del(idle_exiter);
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_ecore_unlock();
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return data;
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}
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/**
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* @}
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*/
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static void *
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_ecore_idle_exiter_del(Ecore_Idle_Exiter *obj)
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{
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Ecore_Idle_Exiter_Private_Data *idle_exiter = eo_data_get(obj, MY_CLASS);
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EINA_SAFETY_ON_TRUE_RETURN_VAL(idle_exiter->delete_me, NULL);
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idle_exiter->delete_me = 1;
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idle_exiters_delete_me = 1;
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return idle_exiter->data;
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}
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static void
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_destructor(Eo *obj, void *_pd, va_list *list EINA_UNUSED)
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{
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Ecore_Idle_Exiter_Private_Data *idle_exiter = _pd;
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idle_exiter->delete_me = 1;
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idle_exiters_delete_me = 1;
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eo_do_super(obj, eo_destructor());
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}
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void
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_ecore_idle_exiter_shutdown(void)
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{
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Ecore_Idle_Exiter_Private_Data *ie;
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while ((ie = idle_exiters))
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{
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idle_exiters = (Ecore_Idle_Exiter_Private_Data *)eina_inlist_remove(EINA_INLIST_GET(idle_exiters), EINA_INLIST_GET(idle_exiters));
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eo_parent_set(ie->obj, NULL);
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if (eo_destructed_is(ie->obj))
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eo_manual_free(ie->obj);
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else
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eo_manual_free_set(ie->obj, EINA_FALSE);
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}
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idle_exiters_delete_me = 0;
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idle_exiter_current = NULL;
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}
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void
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_ecore_idle_exiter_call(void)
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{
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if (!idle_exiter_current)
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{
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/* regular main loop, start from head */
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idle_exiter_current = idle_exiters;
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}
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else
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{
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/* recursive main loop, continue from where we were */
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idle_exiter_current =
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(Ecore_Idle_Exiter_Private_Data *)EINA_INLIST_GET(idle_exiter_current)->next;
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}
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while (idle_exiter_current)
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{
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Ecore_Idle_Exiter_Private_Data *ie = (Ecore_Idle_Exiter_Private_Data *)idle_exiter_current;
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if (!ie->delete_me)
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{
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ie->references++;
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if (!_ecore_call_task_cb(ie->func, ie->data))
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{
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if (!ie->delete_me) _ecore_idle_exiter_del(ie->obj);
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}
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ie->references--;
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}
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if (idle_exiter_current) /* may have changed in recursive main loops */
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idle_exiter_current =
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(Ecore_Idle_Exiter_Private_Data *)EINA_INLIST_GET(idle_exiter_current)->next;
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}
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if (idle_exiters_delete_me)
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{
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Ecore_Idle_Exiter_Private_Data *l;
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int deleted_idler_exiters_in_use = 0;
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for (l = idle_exiters; l; )
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{
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Ecore_Idle_Exiter_Private_Data *ie = l;
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l = (Ecore_Idle_Exiter_Private_Data *)EINA_INLIST_GET(l)->next;
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if (ie->delete_me)
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{
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if (ie->references)
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{
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deleted_idler_exiters_in_use++;
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continue;
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}
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idle_exiters = (Ecore_Idle_Exiter_Private_Data *)eina_inlist_remove(EINA_INLIST_GET(idle_exiters), EINA_INLIST_GET(ie));
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eo_parent_set(ie->obj, NULL);
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if (eo_destructed_is(ie->obj))
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eo_manual_free(ie->obj);
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else
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eo_manual_free_set(ie->obj, EINA_FALSE);
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}
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}
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if (!deleted_idler_exiters_in_use)
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idle_exiters_delete_me = 0;
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}
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}
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int
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_ecore_idle_exiter_exist(void)
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{
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if (idle_exiters) return 1;
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return 0;
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}
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static void
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_class_constructor(Eo_Class *klass)
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{
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const Eo_Op_Func_Description func_desc[] = {
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EO_OP_FUNC(EO_BASE_ID(EO_BASE_SUB_ID_CONSTRUCTOR), _constructor),
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EO_OP_FUNC(EO_BASE_ID(EO_BASE_SUB_ID_DESTRUCTOR), _destructor),
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EO_OP_FUNC(ECORE_IDLE_EXITER_ID(ECORE_IDLE_EXITER_SUB_ID_CONSTRUCTOR), _idle_exiter_constructor),
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EO_OP_FUNC_SENTINEL
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};
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eo_class_funcs_set(klass, func_desc);
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}
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static const Eo_Op_Description op_desc[] = {
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EO_OP_DESCRIPTION(ECORE_IDLE_EXITER_SUB_ID_CONSTRUCTOR, "Add an idle exiter handler."),
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EO_OP_DESCRIPTION_SENTINEL
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};
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static const Eo_Class_Description class_desc = {
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EO_VERSION,
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MY_CLASS_NAME,
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EO_CLASS_TYPE_REGULAR,
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EO_CLASS_DESCRIPTION_OPS(&ECORE_IDLE_EXITER_BASE_ID, op_desc, ECORE_IDLE_EXITER_SUB_ID_LAST),
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NULL,
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sizeof(Ecore_Idle_Exiter_Private_Data),
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_class_constructor,
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NULL
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};
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EO_DEFINE_CLASS(ecore_idle_exiter_class_get, &class_desc, EO_BASE_CLASS, NULL)
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