Le 02/02/2010 03:20, John Rose a écrit :
> On Jan 31, 2010, at 11:19 PM, Charles Oliver Nutter wrote:
>
>
>> The other use case, which I did not attempt, was in regenerating call
>> sites a la the DLR's DynamicSite logic (which repeatedly regenerates a
>> call site with a series of instanceof checks, to specialize the call
>> paths iteratively). Again, InvokeDynamic potentially handles this
>> better?
>>
> It is designed to do this; e.g., see section 5.3 in my VMIL paper.
>
CallSite.setTarget() is your friend :)
> One bit of engineering that needs investigation is how to build up DLR-style
> call sites incrementally without doing quadratic recompilation work.
>
In general, the full adapter blob is created before the compilation is
triggered.
Otherwise a way to do this is to provide a specific mutable adapter :
public class MethodHandles {
/** create a dispatch table
*/
public static DispatchMethodHandle dispatchTable(MethodType type, int
pos)
}
public class DispatchTable extends MethodHandle {
public addTarget(Class<?> clazz, MethodHandle mh) { ... }
}
Rémi
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