--- a/hotspot/src/os_cpu/linux_x86/vm/atomic_linux_x86.inline.hpp Fri Jan 07 03:58:11 2011 -0800
+++ b/hotspot/src/os_cpu/linux_x86/vm/atomic_linux_x86.inline.hpp Fri Jan 07 10:16:57 2011 -0800
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2011, Oracle and/or its affiliates. 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
@@ -100,11 +100,6 @@
return exchange_value;
}
-extern "C" {
- // defined in linux_x86.s
- jlong _Atomic_cmpxchg_long(jlong, volatile jlong*, jlong, bool);
-}
-
#ifdef AMD64
inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; }
inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; }
@@ -164,9 +159,9 @@
return (void*)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value);
}
-#else
-//inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; }
-//inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; }
+inline jlong Atomic::load(volatile jlong* src) { return *src; }
+
+#else // !AMD64
inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
return (intptr_t)Atomic::add((jint)add_value, (volatile jint*)dest);
@@ -189,6 +184,12 @@
return (intptr_t)xchg((jint)exchange_value, (volatile jint*)dest);
}
+extern "C" {
+ // defined in linux_x86.s
+ jlong _Atomic_cmpxchg_long(jlong, volatile jlong*, jlong, bool);
+ void _Atomic_move_long(volatile jlong* src, volatile jlong* dst);
+}
+
inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
return _Atomic_cmpxchg_long(exchange_value, dest, compare_value, os::is_MP());
}
@@ -200,6 +201,21 @@
inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
return (void*)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value);
}
+
+inline jlong Atomic::load(volatile jlong* src) {
+ volatile jlong dest;
+ _Atomic_move_long(src, &dest);
+ return dest;
+}
+
+inline void Atomic::store(jlong store_value, jlong* dest) {
+ _Atomic_move_long((volatile jlong*)&store_value, (volatile jlong*)dest);
+}
+
+inline void Atomic::store(jlong store_value, volatile jlong* dest) {
+ _Atomic_move_long((volatile jlong*)&store_value, dest);
+}
+
#endif // AMD64
#endif // OS_CPU_LINUX_X86_VM_ATOMIC_LINUX_X86_INLINE_HPP