RFR: 8227738: jvmti/DataDumpRequest/datadumpreq001 failed due to "exit code is 134"

[Yasumasa Suenaga]

Hi all,

Please review this change:

   JBS: https://bugs.openjdk.java.net/browse/JDK-8227738
   webrev: http://cr.openjdk.java.net/~ysuenaga/JDK-8227738/webrev.00/

After JDK-8225690, HotSpot could not handle JVMTI dump request (includes thread dump request).
It is caused by incorrect handling of AttachListener::is_init_trigger().

I fixed it in this webrev, and it works fine on serviceability/attach and vmTestbase/nsk/jvmti/DataDumpRequest/datadumpreq001.
Also I pushed this to submit repo (I have not yet received the result).

   http://hg.openjdk.java.net/jdk/submit/rev/3fb4b04ff5f2


Thanks,

Yasumasa