forked from enlightenment/efl
113 lines
3.5 KiB
C
113 lines
3.5 KiB
C
//Compile with:
|
|
//gcc -o efl_thread_5 efl_thread_5.c -g `pkg-config --cflags --libs elementary`
|
|
#include <Elementary.h>
|
|
|
|
static Ecore_Thread *thr = NULL;
|
|
|
|
static Evas_Object *win = NULL;
|
|
static Evas_Object *rect = NULL;
|
|
|
|
struct info
|
|
{
|
|
double x, y;
|
|
};
|
|
|
|
// BEGIN - code running in my custom thread instance
|
|
//
|
|
static void
|
|
th_do(void *data EINA_UNUSED, Ecore_Thread *th)
|
|
{
|
|
double t = 0.0;
|
|
|
|
// inside our "do" function for the ecore thread, lets do the real work
|
|
for (;;)
|
|
{
|
|
struct info *inf = malloc(sizeof(struct info));
|
|
|
|
if (inf)
|
|
{
|
|
inf->x = 200 + (200 * sin(t));
|
|
inf->y = 200 + (200 * cos(t));
|
|
// now we have recorded the timepoint we pass it as feedback
|
|
// back to the mainloop. it will free it when done
|
|
ecore_thread_feedback(th, inf);
|
|
}
|
|
// and sleep and loop
|
|
usleep(1000);
|
|
t += 0.02;
|
|
// in case someone has asked us to cancel - then cancel this loop
|
|
// co-operatively (cancelling is co-operative)
|
|
if (ecore_thread_check(th)) break;
|
|
}
|
|
}
|
|
//
|
|
// END - code running in my custom thread instance
|
|
|
|
static void // when mainloop gets feedback from worker
|
|
th_feedback(void *data EINA_UNUSED, Ecore_Thread *th EINA_UNUSED, void *msg)
|
|
{
|
|
struct info *inf = msg;
|
|
evas_object_move(rect, inf->x - 50, inf->y - 50);
|
|
free(inf);
|
|
}
|
|
|
|
// BONUS (optional): called after th_do returns and has NOT been cancelled
|
|
static void th_end(void *data EINA_UNUSED, Ecore_Thread *th EINA_UNUSED) { printf("thread ended\n"); }
|
|
// BONUS (optional): called in mainloop AFTER thread has finished cancelling
|
|
static void th_cancel(void *data EINA_UNUSED, Ecore_Thread *th EINA_UNUSED) { printf("thread cancelled\n"); }
|
|
|
|
// just test cancelling the thread worker
|
|
static void
|
|
down(void *data EINA_UNUSED, Evas *e EINA_UNUSED, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
|
|
{
|
|
if (thr) ecore_thread_cancel(thr);
|
|
thr = NULL;
|
|
}
|
|
|
|
// on window delete - cancel thread then delete window and exit mainloop
|
|
static void
|
|
del(void *data EINA_UNUSED, Evas_Object *obj, void *event_info EINA_UNUSED)
|
|
{
|
|
if (thr) ecore_thread_cancel(thr);
|
|
thr = NULL;
|
|
evas_object_del(obj);
|
|
elm_exit();
|
|
}
|
|
|
|
EAPI_MAIN int
|
|
elm_main(int argc EINA_UNUSED, char **argv EINA_UNUSED)
|
|
{
|
|
Evas_Object *o;
|
|
|
|
elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_CLOSED);
|
|
|
|
win = elm_win_util_standard_add("efl-thread-5", "EFL Thread 5");
|
|
evas_object_smart_callback_add(win, "delete,request", del, NULL);
|
|
|
|
o = evas_object_rectangle_add(evas_object_evas_get(win));
|
|
evas_object_color_set(o, 50, 80, 180, 255);
|
|
evas_object_resize(o, 100, 100);
|
|
evas_object_show(o);
|
|
evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_DOWN, down, NULL);
|
|
rect = o;
|
|
|
|
// explicitly create ecore thread to do some "work on the side" and pass
|
|
// in NULL as data ptr to callbacks and true at the end means to actually
|
|
// make a new thread and not use the thread pool (there is a thread pool
|
|
// with as many thread workers as there are cpu's so this means you do not
|
|
// overload the cpu's with more work than you actually have processing
|
|
// units *IF* your threads do actually spend their time doing actual
|
|
// heavy computation)
|
|
thr = ecore_thread_feedback_run(th_do, th_feedback, th_end, th_cancel,
|
|
NULL, EINA_TRUE);
|
|
|
|
evas_object_resize(win, 400, 400);
|
|
evas_object_show(win);
|
|
|
|
elm_run();
|
|
if (thr) ecore_thread_cancel(thr);
|
|
|
|
return 0;
|
|
}
|
|
ELM_MAIN()
|