git: openjdk/jdk21u-dev: master: 8320052: Zero: Use __atomic built-ins for atomic RMW operations

[Aleksey Shipilev]

Changeset: c6ebfdfe
Author:    Aleksey Shipilev <shade at openjdk.org>
Date:      2024-02-03 10:00:21 +0000
URL:       https://git.openjdk.org/jdk21u-dev/commit/c6ebfdfe977f1cfadc151f7c35146858cd874baa

8320052: Zero: Use __atomic built-ins for atomic RMW operations

Backport-of: 020c9007f8e9cc4b46a58d7955284f43a6ac913b

! src/hotspot/os_cpu/bsd_zero/atomic_bsd_zero.hpp
! src/hotspot/os_cpu/bsd_zero/os_bsd_zero.cpp
! src/hotspot/os_cpu/linux_zero/atomic_linux_zero.hpp
! src/hotspot/os_cpu/linux_zero/os_linux_zero.cpp