rpc/dataconn: microbenchmark

util/devnoop/devnoop.go

@@ -0,0 +1,14 @@
+// package devnoop provides an io.ReadWriteCloser that never errors
+// and always reports reads / writes to / from buffers as complete.
+// The buffers themselves are never touched.
+package devnoop
+
+type Dev struct{}
+
+func Get() Dev {
+	return Dev{}
+}
+
+func (Dev) Write(p []byte) (n int, err error) { return len(p), nil }
+func (Dev) Read(p []byte) (n int, err error)  { return len(p), nil }
+func (Dev) Close() error                      { return nil }