[11u] RFR 8252090: JFR: StreamWriterHost::write_unbuffered() stucks in an infinite loop OpenJDK (build 13.0.1+9)

[Severin Gehwolf]

Hi,

On Mon, 2020-10-19 at 18:05 +0200, Jaroslav Bachorík wrote:
> Gentle ping?
> 
> On Wed, Oct 7, 2020 at 5:58 PM Jaroslav Bachorík
> <jaroslav.bachorik at datadoghq.com> wrote:
> > Hello,
> > 
> > Can I get the following backport reviewed?
> > 
> > JIRA: https://bugs.openjdk.java.net/browse/JDK-8252090
> > Webrev: http://cr.openjdk.java.net/~jbachorik/8252090/00/webrev/
> > 
> > The backport and the original patch are differing in 1 place only:
> > - src/hotspot/share/jfr/recorder/repository/jfrChunkWriter.cpp does
> > not contain write_magic() method and the change needs to be done in
> > JfrChunkWriter::open() instead

It also differs a bit in jfrStorageUtils.inline.hpp
where EpochDispatchOp::process() isn't present in 11u. OK.

The patch seems OK to me.

Thanks,
Severin

> > Ran tier1 and jdk_jfr tests successfully.
> > 
> > Thanks,
> > 
> > -JB-