The test captures the number of loaded classes right at the start and
then checks the diffs when it's finished. However, it seems that there
might by some async class loading still going on, initiated by JFR.
The patch simply adds a loop to wait for the number of loaded classes to
settle before continuing. This should prevent the test failing with JFR
intermittently.
Issue: https://bugs.openjdk.java.net/browse/JDK-7144200
Webrev: http://cr.openjdk.java.net/~jbachorik/7144200/webrev.00/
Cheers,
-JB-
