git: openjdk/jdk21u-dev: master: 8319883: Zero: Use atomic built-ins for 64-bit accesses

[Aleksey Shipilev]

Changeset: b745bb51
Author:    Aleksey Shipilev <shade at openjdk.org>
Date:      2024-01-08 16:36:50 +0000
URL:       https://git.openjdk.org/jdk21u-dev/commit/b745bb515f19d47e5246773ddfc48a23deda1345

8319883: Zero: Use atomic built-ins for 64-bit accesses

Backport-of: 25f9af99be1c906fc85b8192df8fa50cced3474f

! src/hotspot/os_cpu/bsd_zero/atomic_bsd_zero.hpp
! src/hotspot/os_cpu/linux_zero/atomic_linux_zero.hpp