[aspectj-users] problems with load time weaving and rmi communication

[Thilo Focke <thilo.focke@xxxxxxxxx>]

Hello,

i wrote an aspect, that collects performance data for every public 
method in my webapplication that has a special annotation. The 
corresponding pointcut looks like this:

   pointcut probeMethod(Object object): execution(@MyAnnotation * 
*.*(..)) && this(object);

i integrated the aspect in my tomcat container and activated load time 
weaving (-javaagent:aspectweaver.jar).
then i wrote a simple servlet that has a public method with this 
annotation (the method just waits a short time via Thread.sleep()) and 
tested it with a little stress test (jwebunit test), that permanently 
called the servlet request. Simultaneously i observed my servlet 
container (tomcat) via jconsole (heap memory usage, loaded classes). the 
memory usage was constant while the test was running and the aspect 
worked fine.

now i extended my annotated method with rmi communication, like the 
following:

       Properties prop = new Properties();
       prop.put("java.naming.factory.initial", 
"weblogic.jndi.WLInitialContextFactory");
       prop.put("java.naming.provider.url", "t3://MyIP");
       InitialContext ctx = new InitialContext(prop);
       Object objref = ctx.lookup("MyBean");
       MyServiceHome beanHome = (MyServiceHome) 
javax.rmi.PortableRemoteObject.narrow(objref, MyServiceHome.class);
       MyService myService = beanHome.create();
       myService.doSomething();

Now i started my stress test again. The Aspect again worked fine but i 
amazed about the memory usage: While running the test the heap memory 
usage increased permanently (up to 1 GByte!!). Additionally i noticed 
that classes where loaded permanently (noticed this with jconsole).

This phenomenon does only occur when i add bean communication via rmi. 
without that, everything works fine.

does anyone has an explanation for this? i assume the load time weaving 
mechanism has problems with rmi communication, but i don't know why...

greetings,
thilo