[BTRACE-90] BTrace does not work for JDK7u25

[jbachorik]

[reporter="j.bachorik", created="Tue, 2 Jul 2013 12:57:38 +0200", resolved="Tue, 2 Jul 2013 16:25:41 +0200"]

The latest JDK7 update broke BTrace.

An attempt to attach to an application results in

Exception in thread "Thread-0" java.lang.ExceptionInInitializerError
    at com.sun.btrace.agent.Main.startServer(Main.java:379)
    at com.sun.btrace.agent.Main.access$000(Main.java:65)
    at com.sun.btrace.agent.Main$3.run(Main.java:166)
    at java.lang.Thread.run(Thread.java:724)
 Caused by: java.lang.SecurityException: unsafe init
    at com.sun.btrace.BTraceRuntime.init(BTraceRuntime.java:382)
    at com.sun.btrace.agent.Client.(Client.java:94)
    ... 4 more

This is caused by sun.reflect.Reflection.getCallerClass(int) requiring one additional frame to skip when trying to get the immediate caller.

[jbachorik]

[author="j.bachorik", created="Tue, 2 Jul 2013 16:25:41 +0200"]

https://kenai.com/projects/btrace/sources/hg/revision/444