/* * Copyright (c) 2003, 2019, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2014, 2019, Red Hat Inc. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef OS_CPU_LINUX_AARCH64_ORDERACCESS_LINUX_AARCH64_HPP #define OS_CPU_LINUX_AARCH64_ORDERACCESS_LINUX_AARCH64_HPP // Included in orderAccess.hpp header file. #include "runtime/vm_version.hpp" // Implementation of class OrderAccess. inline void OrderAccess::loadload() { acquire(); } inline void OrderAccess::storestore() { release(); } inline void OrderAccess::loadstore() { acquire(); } inline void OrderAccess::storeload() { fence(); } #define FULL_MEM_BARRIER __sync_synchronize() #define READ_MEM_BARRIER __atomic_thread_fence(__ATOMIC_ACQUIRE); #define WRITE_MEM_BARRIER __atomic_thread_fence(__ATOMIC_RELEASE); inline void OrderAccess::acquire() { READ_MEM_BARRIER; } inline void OrderAccess::release() { WRITE_MEM_BARRIER; } inline void OrderAccess::fence() { FULL_MEM_BARRIER; } inline void OrderAccess::cross_modify_fence() { } #endif // OS_CPU_LINUX_AARCH64_ORDERACCESS_LINUX_AARCH64_HPP