106 lines
2.2 KiB
C
106 lines
2.2 KiB
C
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/**
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* @file lv_async.c
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*
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*/
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/*********************
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* INCLUDES
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*********************/
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#include "lv_async.h"
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#include "lv_mem.h"
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#include "lv_timer.h"
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/*********************
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* DEFINES
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*********************/
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/**********************
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* TYPEDEFS
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**********************/
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typedef struct _lv_async_info_t {
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lv_async_cb_t cb;
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void * user_data;
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} lv_async_info_t;
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/**********************
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* STATIC PROTOTYPES
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**********************/
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static void lv_async_timer_cb(lv_timer_t * timer);
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/**********************
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* STATIC VARIABLES
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**********************/
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/**********************
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* MACROS
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**********************/
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/**********************
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* GLOBAL FUNCTIONS
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**********************/
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lv_res_t lv_async_call(lv_async_cb_t async_xcb, void * user_data)
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{
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/*Allocate an info structure*/
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lv_async_info_t * info = lv_mem_alloc(sizeof(lv_async_info_t));
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if(info == NULL)
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return LV_RES_INV;
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/*Create a new timer*/
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lv_timer_t * timer = lv_timer_create(lv_async_timer_cb, 0, info);
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if(timer == NULL) {
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lv_mem_free(info);
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return LV_RES_INV;
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}
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info->cb = async_xcb;
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info->user_data = user_data;
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lv_timer_set_repeat_count(timer, 1);
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return LV_RES_OK;
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}
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lv_res_t lv_async_call_cancel(lv_async_cb_t async_xcb, void * user_data)
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{
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lv_timer_t * timer = lv_timer_get_next(NULL);
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lv_res_t res = LV_RES_INV;
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while(timer != NULL) {
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/*Find the next timer node*/
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lv_timer_t * timer_next = lv_timer_get_next(timer);
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/*Find async timer callback*/
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if(timer->timer_cb == lv_async_timer_cb) {
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lv_async_info_t * info = (lv_async_info_t *)timer->user_data;
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/*Match user function callback and user data*/
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if(info->cb == async_xcb && info->user_data == user_data) {
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lv_timer_del(timer);
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lv_mem_free(info);
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res = LV_RES_OK;
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}
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}
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timer = timer_next;
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}
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return res;
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}
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/**********************
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* STATIC FUNCTIONS
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**********************/
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static void lv_async_timer_cb(lv_timer_t * timer)
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{
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lv_async_info_t * info = (lv_async_info_t *)timer->user_data;
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info->cb(info->user_data);
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lv_mem_free(info);
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}
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