remove second ifdefs for windows timing by introducing ported version of clock_gettime

win.c

@@ -176,3 +176,11 @@ int munlock(const void *addr, size_t len)
     
     return -1;
 }
+
+// Portable clock_gettime function for Windows
+int clock_gettime(int clk_id, struct timespec *tp) {
+    DWORD ticks = GetTickCount();
+    tp->tv_sec = ticks / 1000;
+    tp->tv_nsec = (ticks % 1000) * 1000000;
+    return 0;
+}