// Low-level functions for atomic operations: version for CPUs providing
// atomic builtins -*- C++ -*-
-// Copyright (C) 2006, 2009 Free Software Foundation, Inc.
+// Copyright (C) 2006-2014 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
-/** @file ext/atomicity.h
- * This file is a GNU extension to the Standard C++ Library.
- */
-
#include <bits/c++config.h>
#include <bits/atomic_word.h>
-_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
+namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
_Atomic_word
__attribute__ ((__unused__))
- __exchange_and_add(volatile _Atomic_word* __mem, int __val)
- { return __sync_fetch_and_add(__mem, __val); }
+ __exchange_and_add(volatile _Atomic_word* __mem, int __val) throw ()
+ { return __atomic_fetch_add(__mem, __val, __ATOMIC_ACQ_REL); }
void
__attribute__ ((__unused__))
- __atomic_add(volatile _Atomic_word* __mem, int __val)
- { __sync_fetch_and_add(__mem, __val); }
+ __atomic_add(volatile _Atomic_word* __mem, int __val) throw ()
+ { __atomic_fetch_add(__mem, __val, __ATOMIC_ACQ_REL); }
-_GLIBCXX_END_NAMESPACE
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace