git: openjdk/loom: fibers: Filter handshakes to run only on Java threads

[duke]

Changeset: 7a38bbea
Author:    Ron Pressler <ron.pressler at oracle.com>
Date:      2020-10-29 19:24:05 +0000
URL:       https://git.openjdk.java.net/loom/commit/7a38bbea

Filter handshakes to run only on Java threads

! src/hotspot/share/classfile/javaClasses.cpp
! src/hotspot/share/runtime/continuation.cpp
! src/hotspot/share/runtime/handshake.cpp
! src/hotspot/share/runtime/handshake.hpp