Re: Re: ASM 4 is ready ?

On 01/08/2011 12:26 PM, Eric Bruneton wrote:
> 06/01/2011 02:59, Rémi Forax wrote:
>> Hi everybody,
>> I'm please to announce that I've finished to implement all remaining
>> features of ASM 4.
>> - xml package has been updated to work with invokedynamic.
>> - the optimizer works with invokedynamic.
>> - ClassWriter(ClassReader) optimization now works.
>
> thanks! I made some refactorings to change some class and method 
> names, move constant definitions, etc (to be more consistent with 
> current ASM conventions)

I think renaming MHandle to MethodHandle ( resp.M.Type to MethodType) 
was a bad idea.
I mostly use ASM at runtime e.g. in a world where java.dyn.MethodHandle 
exists,
you can see an example in my last blog post
(http://weblogs.java.net/blog/forax/archive/2011/01/07/call-invokedynamic-java)

It will be really a pain for me and all other runtime implementers to 
have to
prefix by "org.objectweb.asm" each time I will have to disambiguate
between ASM MethodHandle and JSR292 MethodHandle.
As a parallel, org.objectweb.asm.Type is not named org.objectweb.asm.Class.

>
> Do you have classes making heavy use of the new invokedynamic 
> instruction? If so you could test if ClassReader performance can be 
> improved by caching some data (for instance, you could add a 'bsm' 
> array to cache the already parsed MethodHandle objects, and likewise 
> for the invokedynamic constants -- see the ClassReader.strings array; 
> you can also cache the hashcode of these objects in a private field, etc)

PHP.reboot has a ahead of time generator that generates such classes .
I will update it to use the latest revision and send you instructions 
explaining how to generate such classes.

>
> Eric

Rémi

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