On May 19, 2009, at 3:37 PM, Charles Oliver Nutter wrote:
> Woah, now that's wild. Can you elaborate on that at all? Would the MHs
> essentially be the nodes of an IR?
It certainly deserves elaboration. My previous message gave a few
more points about combineArguments.
Fredrik's blog entry of
Nice blog entry, Fredrik. Neal Gafter was also asking me at Lang.NET
for a slow path like the one you suggest.
If the user has a specific signature in mind, guardWithTest is
interchangeable with a hand-written JMH containing the if/then/else
logic. But the general API needs to be signatur
Also, IIRC (and I might be wrong about that, memory is sometimes
failing...), guardWithTest was introduced when there was no
JavaMethodHandle; John pretty much specified few general-purpose
method handle types creatable by static factory methods in the
MethodHandles utility class, and that
Arthur Peters skrev:
> I'm a lurker, but I have a question.
>
> What makes guardWithTest better or faster than simply using a method
> handle of a method with an if statement in it?
>
> Like:
> Object meth(...args...) {
> if(pred)
> guard;
> else
> callTargetMethod;
> }
>
> Can the JVM
John Rose skrev:
> As Fredrik says, you can hide the polymorphism by going to a
> reflective (fully boxed) calling sequence. But, we've had 10 years to
> learn to optimize that reliably, and we don't. Some JVMs optimize
> boxing sometimes, but not all do, and it is historically a hard
> p
Changeset: 039c43d8e288
Author:jrose
Date: 2009-05-25 03:06 -0700
URL: http://hg.openjdk.java.net/mlvm/mlvm/jdk/rev/039c43d8e288
meth, indy: rebase to bsd-port
! series
Changeset: bc4664135790
Author:jrose
Date: 2009-05-25 03:08 -0700
URL: http://hg.openjdk.java.net
Changeset: 4f32d5550915
Author:jrose
Date: 2009-05-25 03:01 -0700
URL: http://hg.openjdk.java.net/mlvm/mlvm/hotspot/rev/4f32d5550915
meth, indy: rebase to bsd-port
! series
Changeset: cc49316b082d
Author:jrose
Date: 2009-05-25 03:04 -0700
URL: http://hg.openjdk.java
Changeset: 6276f97c3873
Author:jrose
Date: 2009-05-25 02:50 -0700
URL: http://hg.openjdk.java.net/mlvm/mlvm/langtools/rev/6276f97c3873
meth: rebase to bsd-port
! series
Changeset: 3088e381b696
Author:jrose
Date: 2009-05-25 02:50 -0700
URL: http://hg.openjdk.java.net
