jdk9/hs-rt is CLOSED due to stabilization effort

[Jesper Wilhelmsson]

Hi,

TLDR; We are closing jdk9/hs-rt for any pushes not related to fixing the bugs 
mentioned below.


Since we are many developers working in jdk9/hs-rt these days it has proven 
challenging to find a nightly snapshot that passes the criteria [1] to be 
integrated into jdk9/hs.

Currently there are three issues that has escaped to main and these needs to get 
fixed asap for us to be able to push jdk9/hs to jdk9/dev:

JDK-8146751 - jdk/test/tools/launcher/TooSmallStackSize.java failed on Mac OS

JDK-8147477 - com/sun/management/HotSpotDiagnosticMXBean/CheckOrigin.java is 
failing for the jdk9/hs snapshot control job

JDK-8146449 - Use unified logging for stacktrace event tests


There is an increasing pile of changes in jdk9/hs (150+) so it is getting urgent 
to integrate. To be able to get these fixes in to jdk9/hs we need to get a clean 
hs-rt to push. Currently there are four bugs labeled integration blockers [2]:

JDK-8147494 - com/sun/management/HotSpotDiagnosticMXBean/CheckOrigin.java fails 
with "java.lang.IllegalArgumentException: VM option 'TraceExceptions' does not 
exist"

JDK-8147481 - VM crash fatal error: corrupted C heap

JDK-8147477 - com/sun/management/HotSpotDiagnosticMXBean/CheckOrigin.java is 
failing for the jdk9/hs snapshot control job

JDK-8147475 - compiler/jvmci/code/SimpleDebugInfoTest.java fails in 
Assembler::locate_operand: ShouldNotReachHere()


(One is actually the same as in main.)

To be able to get fixes for these issues in asap without risking introducing new 
failures we need to close hs-rt for all pushes.

So, please do not push any changes not directly related to fixing the issues 
above to jdk9/hs-rt before further notice.

Thanks,
/Jesper


[1] The criteria to integrate new changes into main is that there can not be any 
new bugs introduced by these new changes. We say that there are no new bugs if a 
change passes two nightlies without making any noise.

[2] https://bugs.openjdk.java.net/issues/?filter=24183