refactor: move times API to utils.h

src/utils/utils.h

@@ -7,6 +7,31 @@ extern "C"
 
 #include <stdint.h>
 #include <stdio.h>
+#include <time.h>
+
+/*
+ * The maximum number of seconds that can be stored in the time_t value is 2147483647 –- a little over 68 years.
+ *
+ * struct timespec
+ * {
+ *     time_t tv_sec; // seconds
+ *     long tv_nsec;  // nanoseconds
+ * };
+ *
+ * 1  s = 1000 ms
+ * 1 ms = 1000 us
+ * 1 us = 1000 ns
+ */
+
+#define TIMESPEC_TO_MSEC(ts) ((ts).tv_sec * 1000 + (ts).tv_nsec / 1000000)
+
+static inline uint64_t clock_get_real_time_ms()
+{
+    struct timespec now;
+    clock_gettime(CLOCK_REALTIME_COARSE, &now);
+
+    return TIMESPEC_TO_MSEC(now);
+}
 
 static inline void hexdump_to_fd(int fd, uint32_t idx, const char *data, uint16_t len)
 {