src/hotspot/os_cpu/linux_aarch64/atomic_linux_aarch64.hpp

rev 49986 : 8202080: Introduce ordering semantics for Atomic::add and other RMW atomics
Reviewed-by: lucy, rehn, dholmes

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2014, 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

@@ -37,19 +37,20 @@
 template<size_t byte_size>
 struct Atomic::PlatformAdd
   : Atomic::AddAndFetch<Atomic::PlatformAdd<byte_size> >
 {
   template<typename I, typename D>
-  D add_and_fetch(I add_value, D volatile* dest) const {
+  D add_and_fetch(I add_value, D volatile* dest, atomic_memory_order order) const {
     return __sync_add_and_fetch(dest, add_value);
   }
 };
 
 template<size_t byte_size>
 template<typename T>
 inline T Atomic::PlatformXchg<byte_size>::operator()(T exchange_value,
-                                                     T volatile* dest) const {
+                                                     T volatile* dest,
+                                                     atomic_memory_order order) const {
   STATIC_ASSERT(byte_size == sizeof(T));
   T res = __sync_lock_test_and_set(dest, exchange_value);
   FULL_MEM_BARRIER;
   return res;
 }

@@ -57,11 +58,11 @@
 template<size_t byte_size>
 template<typename T>
 inline T Atomic::PlatformCmpxchg<byte_size>::operator()(T exchange_value,
                                                         T volatile* dest,
                                                         T compare_value,
-                                                        cmpxchg_memory_order order) const {
+                                                        atomic_memory_order order) const {
   STATIC_ASSERT(byte_size == sizeof(T));
   if (order == memory_order_relaxed) {
     T value = compare_value;
     __atomic_compare_exchange(dest, &value, &exchange_value, /*weak*/false,
                               __ATOMIC_RELAXED, __ATOMIC_RELAXED);