hg: jdk/sandbox: 8252090: JFR: StreamWriterHost::write_unbuffered() stucks in an infinite loop OpenJDK (build 13.0.1+9)

[chris.hegarty at oracle.com]

Changeset: 8051a4f3f57c
Author:    mgronlun
Date:      2020-09-01 18:01 +0200
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/8051a4f3f57c

8252090: JFR: StreamWriterHost::write_unbuffered() stucks in an infinite loop OpenJDK (build 13.0.1+9)
Reviewed-by: hseigel
Contributed-by: Harold Seigel <harold.seigel at oracle.com>

! src/hotspot/share/jfr/instrumentation/jfrEventClassTransformer.cpp
! src/hotspot/share/jfr/recorder/repository/jfrChunkWriter.cpp
! src/hotspot/share/jfr/recorder/storage/jfrStorageUtils.inline.hpp
! src/hotspot/share/jfr/utilities/jfrBlob.hpp
! src/hotspot/share/jfr/writers/jfrMemoryWriterHost.hpp
! src/hotspot/share/jfr/writers/jfrMemoryWriterHost.inline.hpp
! src/hotspot/share/jfr/writers/jfrStreamWriterHost.hpp
! src/hotspot/share/jfr/writers/jfrStreamWriterHost.inline.hpp
! src/hotspot/share/jfr/writers/jfrWriterHost.hpp
! src/hotspot/share/jfr/writers/jfrWriterHost.inline.hpp