Initial project import

tools/v/vlib/os/sleeping.c.v

@@ -0,0 +1,26 @@
+module os
+
+pub struct C.timespec {
+pub mut:
+	tv_sec  i64
+	tv_nsec i64
+}
+
+fn C.nanosleep(req &C.timespec, rem &C.timespec) i32
+
+// sleep_ms provides a cross platform way to sleep, without having to `import time` for a time.sleep/1 call.
+fn sleep_ms(ms i64) {
+	$if windows {
+		C.Sleep(u32(ms))
+	} $else {
+		mut req := C.timespec{ms / 1000, 1_000_000 * (ms % 1000)}
+		rem := C.timespec{}
+		for C.nanosleep(&req, &rem) < 0 {
+			if C.errno == C.EINTR {
+				req = rem
+			} else {
+				break
+			}
+		}
+	}
+}