[11u] RFR JDK-8217362: Emergency dump does not work when disk=false is set

[Jie Kang]

Hi all,

Please review this backport of 8217362 to OpenJDK jdk11u-dev. The fix
did not apply cleanly and I have described my alterations below. This
fix has been applied on top of my backport request of 8213448 [1],
which I hope will be accepted. I have run the tier one tests as well
as the reproducer described in the bug report. It does not produce a
jfr without the patch and does with the patch applied. Let me know
what you think!

Webrev: http://cr.openjdk.java.net/~jkang/jdk-8217362/webrev.01/
Original Changeset: http://hg.openjdk.java.net/jdk/jdk/rev/3cabb47758c9
Bug: https://bugs.openjdk.java.net/browse/JDK-8217362

Alterations:

1. test/jdk/jdk/jfr/jvm/TestDumpOnCrash.java.rej
[jdk/jdk hg rev] : [openjdk bug]
d7fc38d3fc8d : 8209856: Obsolete error reporter

A one line difference caused rejects; I manually applied the changes.

2. src/hotspot/share/jfr/recorder/repository/jfrRepository.cpp.rej
65deccd64f3a : 8218935: Make jfr strncpy uses GCC 8.x friendly

Small differences caused rejects; I manually applied the changes.
Maybe it would be good to also backport 8218935? If maintainer's have
a stronger opinion I would appreciate it.

3. src/hotspot/share/jfr/recorder/repository/jfrEmergencyDump.cpp.rej
5d20b085d893 : 8203469: Faster safepoints
881c5fbeb849 : 8218041: Assorted wrong/missing includes
625a5bdde0c5 : 8210155: Lock ClassLoaderDataGraph

Generally small changes missing; I manually applied the changes in this patch.

[1]
http://mail.openjdk.java.net/pipermail/jdk-updates-dev/2019-August/001790.html
https://bugs.openjdk.java.net/browse/JDK-8213448


Regards,