hg: jdk/sandbox: better caching anonymous strings

[markus.gronlund at oracle.com]

Changeset: 23e3cd901cb6
Author:    mgronlun
Date:      2019-09-03 11:48 +0200
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/23e3cd901cb6

better caching anonymous strings

! src/hotspot/share/jfr/jfr.cpp
! src/hotspot/share/jfr/jfr.hpp
! src/hotspot/share/jfr/jni/jfrJavaSupport.cpp
! src/hotspot/share/jfr/leakprofiler/chains/bfsClosure.cpp
! src/hotspot/share/jfr/leakprofiler/chains/dfsClosure.cpp
! src/hotspot/share/jfr/leakprofiler/checkpoint/rootResolver.cpp
! src/hotspot/share/jfr/recorder/checkpoint/jfrCheckpointManager.cpp
! src/hotspot/share/jfr/recorder/checkpoint/jfrCheckpointWriter.cpp
! src/hotspot/share/jfr/recorder/checkpoint/jfrMetadataEvent.cpp
! src/hotspot/share/jfr/recorder/checkpoint/jfrMetadataEvent.hpp
! src/hotspot/share/jfr/recorder/checkpoint/types/jfrThreadState.cpp
! src/hotspot/share/jfr/recorder/checkpoint/types/jfrTypeSetUtils.cpp
! src/hotspot/share/jfr/recorder/service/jfrRecorderService.cpp
! src/hotspot/share/jfr/recorder/service/jfrRecorderThread.cpp
! src/hotspot/share/jfr/support/jfrThreadLocal.cpp
! src/hotspot/share/jfr/support/jfrThreadLocal.hpp
! src/hotspot/share/jfr/writers/jfrJavaEventWriter.hpp