hg: jdk/sandbox: 8238000: Crash in ClassLoader::record_result while dynamic dumping netty

[chris.hegarty at oracle.com]

Changeset: 15d69d370743
Author:    ccheung
Date:      2020-03-12 16:05 -0700
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/15d69d370743

8238000: Crash in ClassLoader::record_result while dynamic dumping netty
Summary: Make a copy of the _shared_path_table for use during dynamic CDS dump.
Reviewed-by: iklam, minqi

! src/hotspot/share/memory/dynamicArchive.cpp
! src/hotspot/share/memory/filemap.cpp
! src/hotspot/share/memory/filemap.hpp
! src/hotspot/share/memory/metaspaceShared.cpp