On 11/7/2012 4:15 PM, Vitaly Davidovich wrote:
Hi John,
Nice to see this effort moving forward. While reading the JEP, I
can't help but think how complicated this sounds for JVM
implementors. Is introducing bytecodes and new value type
representation definitely a nonstarter? I'm thinking a setup akin to
the CLR.
I certainly understand the attraction of keeping bytecode the same,
but wouldn't it make the JVM impl more straightforward (and thus more
robust, stable, performant, etc) if value types/structs were first
class citizens?
I'm sure you've thought about this plenty so I'm mostly curious to
hear your take on the tradeoffs and generally on how you think this
approach will shake out.
agreed, though it need not be "that" bad (probably it would be mostly
handled by a dynamic check on the reference or on the object?).
I think it would be nice if, say, a particular class could be marked as
"lockPermanently", so any new instances of the given class would have
this property by default.
like, say, if we could do something like:
@LockPermanently
public class Foo ...
or:
@ValueClass
public class Foo ...
this could be partly so that the JVM could look at the class and be like
"hey, this class is always locked" and possibly optimize it a little
more aggressively.
otherwise, things would mostly be as-is (the ability to do this on a
per-instance basis is an interesting idea...).
Thanks
Sent from my phone
On Nov 7, 2012 4:36 PM, "John Rose" <john.r.r...@oracle.com
<mailto:john.r.r...@oracle.com>> wrote:
Thanks! This will move the conversation forward.
-- John (on my iPhone)
On Nov 7, 2012, at 1:25 PM, mark.reinh...@oracle.com
<mailto:mark.reinh...@oracle.com> wrote:
> Posted: http://openjdk.java.net/jeps/169
>
> - Mark
_______________________________________________
mlvm-dev mailing list
mlvm-dev@openjdk.java.net <mailto:mlvm-dev@openjdk.java.net>
http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
_______________________________________________
mlvm-dev mailing list
mlvm-dev@openjdk.java.net
http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
_______________________________________________
mlvm-dev mailing list
mlvm-dev@openjdk.java.net
http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
