On 07/07/2012 07:02 PM, Dain Sundstrom wrote: > On Jul 7, 2012, at 1:56 AM, Rémi Forax wrote: > >> You have also to figure out how to get two return values from a method call, >> but exceptions are your best friend here. > Can you give an example of what you mean here? Also, from all the > presentations I've seen on the JVM, exceptions are very expensive to throw > and catch, so I would expect this to be way slower then say returning the > multiple values using a generated results class.
Exception are not expensive if you throw them and just catch them (and don't use them) in the same inlining horizon, so you can use them to implement non Java control flow without thinking too much. Anyway, the idea here is to use exception as an exceptional mechanism by example when something that should be an int is not. In that case, throwing an exception is not a big deal because the VM will have to deopt which usual have a bigger impact on the run time. > > -dain Rémi _______________________________________________ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
