RFR 6656031: SA: jmap -permstat number of classes is off by 1
Jaroslav Bachorik
jaroslav.bachorik at oracle.com
Tue Dec 17 03:54:58 PST 2013
Please, review the following fix.
Issue : https://bugs.openjdk.java.net/browse/JDK-6656031
Webrev: http://cr.openjdk.java.net/~jbachorik/6656031/webrev.00
The issue is caused by using SystemDictionary.ClassAndLoaderVisitor to
traverse the dictionary classes to get the numbers of the loaded classes
per classloader. This visitor will visit all the combinations of a
particular class and all its classloaders - the defining CL + all
initiating CLs. This will cause completely wrong numbers to be reported.
The solution is to use SystemDictionary.ClassVisitor which walks only
over the loaded classes (each class exactly once) and extract the
defining CL from the visited Klass.
Thanks,
-JB-
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