Initial project import

tools/v/vlib/x/async/examples/timeout.v

@@ -0,0 +1,23 @@
+import context
+import time
+import x.async as xasync
+
+fn main() {
+	xasync.with_timeout(20 * time.millisecond, fn (mut ctx context.Context) ! {
+		done := ctx.done()
+		select {
+			_ := <-done {
+				return ctx.err()
+			}
+			1 * time.second {
+				return error('work unexpectedly finished')
+			}
+		}
+	}) or {
+		println('timeout result: ${err.msg()}')
+		return
+	}
+
+	eprintln('expected timeout error')
+	exit(1)
+}