sablevm-developer

[Sablevm-developer] Question about JNI methods

[Archie C. <ar...@de...>]

Question about GetStaticFieldID() and GetStaticMethodID().

These JNI functions call _svmf_resolve_field() and _svmf_resolve_method()
(respectively) in order to find the field or method. While this
makes sense for GetFieldID() and GetMethodID(), this seems incorrect
for GetStaticFieldID() and GetStaticMethodID(), as we don't want
to look for the field or method in any superclass or interface...

??

Thanks,
-Archie

__________________________________________________________________________
Archie Cobbs     *     Packet Design     *     http://www.packetdesign.com

Re: [Sablevm-developer] Question about JNI methods

[Prof. E. M. G. <eti...@uq...>]

Doesn't the JVM spec mandates to search super interfaces and classes?  I know it 
is surprizing, but that is so, even for "static" methods and fields!!!

Unless I'm wrong?

Etienne

Archie Cobbs wrote:
> Question about GetStaticFieldID() and GetStaticMethodID().
> 
> These JNI functions call _svmf_resolve_field() and _svmf_resolve_method()
> (respectively) in order to find the field or method. While this
> makes sense for GetFieldID() and GetMethodID(), this seems incorrect
> for GetStaticFieldID() and GetStaticMethodID(), as we don't want
> to look for the field or method in any superclass or interface...
> 
> ??
> 
> Thanks,
> -Archie
> 
> __________________________________________________________________________
> Archie Cobbs     *     Packet Design     *     http://www.packetdesign.com
> 
> 
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-- 
Etienne M. Gagnon, Ph.D.             http://www.info.uqam.ca/~egagnon/
SableVM:                                       http://www.sablevm.org/
SableCC:                                       http://www.sablecc.org/

Re: [Sablevm-developer] Question about JNI methods

[Archie C. <ar...@de...>]

Prof. Etienne M. Gagnon wrote:
> Doesn't the JVM spec mandates to search super interfaces and classes?
> I know it is surprizing, but that is so, even for "static" methods
> and fields!!!

Yes, that is surprising..

So you're right when talking about resolving a CONSTANT_Fieldref
in a class file.. as for the JNI GetStaticFieldID() method, the spec
doesn't really say, but I guess it makes the most sense to follow the
same semantics as with CONSTANT_Fieldref... OK :-)

Thanks,
-Archie

__________________________________________________________________________
Archie Cobbs     *     Packet Design     *     http://www.packetdesign.com