update code

util.c

@@ -0,0 +1,11 @@
+#include "util.h"
+#include <time.h>
+
+unsigned long get_tick_count()
+{
+    struct timespec ts;
+
+    clock_gettime(CLOCK_MONOTONIC, &ts);
+
+    return (ts.tv_sec * 1000 + ts.tv_nsec / 1000000);
+}