Added timers.c demo for uc_timers

test/timers.c

@@ -0,0 +1,62 @@
+#include <stdio.h>
+#include <sys/time.h>
+#include <unistd.h>
+#include <ucore/ucore_timers.h>
+#include <ucore/ucore_utils.h>
+
+
+struct MyStruct {
+    char *str;
+    struct UCTimer timer;
+};
+
+void t1_cb(struct UCTimers *timers, struct UCTimer *timer)
+{
+    TRACEF("T1 expired\n");
+}
+
+void t2_cb(struct UCTimers *timers, struct UCTimer *timer)
+{
+    TRACEF("T2 expired\n");
+}
+
+void mystruct_cb(struct UCTimers *timers, struct UCTimer *timer)
+{
+    struct MyStruct *mystruct = CONTAINER_OF(timer, struct MyStruct, timer);
+
+    TRACEF("MyStruct timer: %s\n", mystruct->str);
+    uc_timer_add(timers, timer, 1, 0);
+}
+
+int main(int argc, char *argv[])
+{
+    struct UCTimers timers;
+    struct UCTimer t1 = {
+        .callback = t1_cb,
+    };
+    struct UCTimer t2 = {
+        .callback = t2_cb,
+    };
+    struct MyStruct my_struct = {
+        .str = "Hello",
+        .timer = {
+            .callback = mystruct_cb,
+        },
+    };
+
+    uc_timers_init(&timers);
+    uc_timer_add(&timers, &t1, 2, 0);
+    uc_timer_add(&timers, &t2, 5, 0);
+    uc_timer_add(&timers, &my_struct.timer, 10, 0);
+
+    for(;;) {
+        struct timeval now;
+        gettimeofday(&now, NULL);
+        uc_timers_run(&timers, &now);
+#ifndef FULL_SPEED
+        usleep(1000);
+#endif
+    }
+
+    return 0;
+}