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From "Anton Luht" <anton.l...@gmail.com>
Subject Re: [drlvm] HARMONY-956 - problem w/ DRLVM classloader
Date Fri, 11 Aug 2006 16:27:16 GMT

Yes, the problem with verifier is partly solved but problems in verifier remain.

method vf_resolve_class( name, true, ctex ) from ver_utils.cpp
sometimes returns null when vf_resolve_class( name, false, ctex )
returns non-null  for same class name. This method is for looking up
classes, if I understand correctly, 'true' means load class if not
loaded and 'false' - just take from cache anything that is there,
don't try to load. The situation when class is in cache and 'deep'
load can't find it shouldn't happen.

Temp workaround for this bug before deep investigation can be:

Index: ver_utils.cpp
--- ver_utils.cpp       (revision 430763)
+++ ver_utils.cpp       (working copy)
@@ -1391,6 +1391,9 @@

     // get stack reference class
     class_handler source = vf_resolve_class( constraint->source, true, ctex );
+    if(source == NULL)  {
+       source = vf_resolve_class( constraint->source, false, ctex );
+    }
     if( !source ) {
         VERIFY_DEBUG( "verifying class " << class_get_name( ctex->m_class )
             << " (method " << method_get_name( constraint->method )

after that the activemq start fails with message:

ERROR: java.lang.RuntimeException: Failed to execute start task. Reason: java.la

To be continued.

On 8/11/06, Gregory Shimansky <gshimansky@gmail.com> wrote:
> I think I've fixed this a few days ago and attached the patch to JIRA. See
> my emails in this thread. Does it fix the problem with verifier for you?
> The problem with verifier is only the first one with activemq. After I fixed
> the exception problem the app still didn't start up.

Anton Luht,
Intel Middleware Products Division

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