Will Java go native?

[Paulo Pinto]

Am 19.09.2013 19:44, schrieb Bruno Medeiros:
> On 19/09/2013 11:06, deadalnix wrote:
>>
>>>> *Java's sluggish performance was what made me look for alternatives
>>>> in the first place, and I found D.
>>>
>>> I accept this as true as it is a statement by you about your decision
>>> making, but Java 8 is not Java 1. Early desktop Java was pure
>>> interpretation, and hence slow. Modern Java, via the JIT, generally
>>> executes native code. With Java 7 and method handles and invokedynamic,
>>> the world changed even more and now computationally intensive codes can
>>> run basically as fast using Java as using C, C++, Fortran, D, Rust, Go.
>>> (After initial "warm up" of the JIT.)
>>>
>>
>> Yes, the warm up is usually a severe drawback for user applications.
>> Server app do not suffer from it that much. I guess that is why java is
>> so much used server side, but not that much to create GUI apps.
>
> Yeah, tell me about it. :/
> When I was writing the new parser for DDT I explored and tested a few
> optimizations that the JVM does to ellide object allocations
> (essentially escape analysis to see when an object can be treated as
> value object, and deallocated automatically at the end of some scope).
> I wanted to use a certain pervasive code idiom in the parser that would
> make the code more elegant, but less performant if this optimization was
> not made.
> ( http://www.meetup.com/Londonjavacommunity/messages/52187462/ )
> Fortunately the JVM is its later incarnations is quite smart in its
> escape analysis, but unfortunately this is all done at runtime, whereas
> a lot of it could be performed compile-time. :( But it seems the Java
> folks (at least for OpenJDK) have a big aversion to performing any kind
> of compile-time optimizations, even though a lot could be done here.
>
>


I once read in a blog, an entry from an ex-JVM engineer from Sun, 
describing that anything that disputed Hotspot JIT capabilities was tabu 
and ideas about native compilation were frowned upon.

Sadly I don't remember any longer where I read it.

--
Paulo