RFR 8199437 [11]Improve diagnostic system assertion message in com.sun.net.httpserver impl

[Alan Bateman]

Looks good.

On 14/03/2018 13:16, Chris Hegarty wrote:
> An odd assertion has been observed in the com.sun.net
> HTTP Server code, that is currently unexplainable. I'd
> like to add some additional diagnostics information to
> the assertion so that it may be more helpful if seen
> again.
>
>
> --- a/src/jdk.httpserver/share/classes/sun/net/httpserver/ServerImpl.java
> +++ b/src/jdk.httpserver/share/classes/sun/net/httpserver/ServerImpl.java
> @@ -408,7 +408,9 @@
>                                      }
>                                      handle (chan, conn);
>                                  } else {
> -                                    assert false;
> +                                    assert false : 
> String.format("Unexpected non-readable key, where "
> +                                        + " key's channel:%s, 
> isValid:%b, interestOps:%d, readyOps:%d",
> +                                        key.channel(), key.isValid(), 
> key.interestOps(), key.readyOps());
>                                  }
>                              } catch (CancelledKeyException e) {
>                                  handleException(key, null);
>
> -Chris.