git: openjdk/loom: fibers: Introduce FreezeBase and ThawBase classes

[duke]

Changeset: 343cd6bf
Author:    Ron Pressler <ron.pressler at oracle.com>
Date:      2022-03-08 14:44:26 +0000
URL:       https://git.openjdk.java.net/loom/commit/343cd6bffcb9a569e3327772145bd1a0bb993267

Introduce FreezeBase and ThawBase classes

! src/hotspot/cpu/aarch64/continuation_aarch64.inline.hpp
! src/hotspot/cpu/x86/continuation_x86.inline.hpp
! src/hotspot/share/runtime/continuation.cpp