RFR (M) JDK-8169559: Add class loader names to relevant VM messages

[Lindenmaier, Goetz]

Hi Lois, 

thanks for doing this. Also that there is joint_in_module_of_loader().
One comment about this method:
     class jit.t.t113.kid1 cannot be cast to class jit.t.t113.kid2 (jit.t.t113.kid1 and jit.t.t113.kid2 are in unnamed Module of loader 'app')
This seems to be very redundant. Why not skip the class names in the module information:
     class jit.t.t113.kid1 cannot be cast to class jit.t.t113.kid2 (both in unnamed Module of loader 'app')
or
     class jit.t.t113.kid1 cannot be cast to class jit.t.t113.kid2 (classes are in unnamed Module of loader 'app')

I'll wait until this is pushed, and then see what is left of my change 8199940.
We should have tests where there are custom modules and loaders printed.

Best regards,
  Goetz.


> -----Original Message-----
> From: hotspot-dev [mailto:hotspot-dev-bounces at openjdk.java.net] On
> Behalf Of Lois Foltan
> Sent: Samstag, 23. Juni 2018 01:30
> To: mandy chung <mandy.chung at oracle.com>
> Cc: hotspot-dev developers <hotspot-dev at openjdk.java.net>
> Subject: Re: RFR (M) JDK-8169559: Add class loader names to relevant VM
> messages
> 
> On 6/21/2018 4:37 PM, mandy chung wrote:
> > Hi Lois,
> >
> > On 6/20/18 5:34 PM, Lois Foltan wrote:
> >> Please review this change to introduce a new utility method
> >> Klass::class_in_module_of_loader() to uniformly provide a way to add
> >> a class' module name and class loader's name_and_id to error messages
> >> and potentially logging.
> >> : open webrev at
> >> http://cr.openjdk.java.net/~lfoltan/bug_jdk8169559/webrev/
> >
> > Thanks for doing this.
> >
> > src/hotspot/share/classfile/moduleEntry.hpp
> >    'M' is meant to be lower case in "unnamed Module", right?
> >
> > src/hotspot/share/interpreter/linkResolver.cpp
> > +      "tried to access method %s.%s%s from class %s (%s%s%s)",
> >
> > Since you are on this file, it may read better if rephrased to:
> >   "class %s tried to access method %s.%s%s (%s%s%s)",
> Hi Mandy,
> Thanks for the review.  All your comments have been addressed, see new
> webrev at:
> 
> http://cr.openjdk.java.net/~lfoltan/bug_jdk8169559.1/webrev/
> 
> Lois
> 
> >
> > Thanks
> > Mandy