Hi all, Please review this webrev:
JBS: https://bugs.openjdk.java.net/browse/JDK-8219414 webrev: http://cr.openjdk.java.net/~ysuenaga/JDK-8219414/webrev.00/ I tried to get PerfCounter values via `jhsdb jsnap` from core image which is generated by `gcore` (provided by GDB), but I encountered UnmappedAddressException. It is caused by `generate-core-file` on GDB regards `coredump_filter` on procfs. https://sourceware.org/gdb/onlinedocs/gdb/Core-File-Generation.html JDK-8200613 introduced `DumpPrivateMappingsInCore` for CDS. I want to introduce `DumpSharedMappingsInCore` for shared memory mapping. Currently `DumpPrivateMappingsInCore` affects when `UseSharedSpaces` is enabled. I want `DumpPrivateMappingsInCore` to affect independently in this change because file-backed private memory which is not CDS might be useful in the future. Thanks, Yasumasa
