2012-03-27 23:13:14 +00:00
|
|
|
// Low-level functions for atomic operations: AIX version -*- C++ -*-
|
|
|
|
|
|
2014-09-21 17:33:12 +00:00
|
|
|
// Copyright (C) 2000-2014 Free Software Foundation, Inc.
|
2012-03-27 23:13:14 +00:00
|
|
|
//
|
|
|
|
|
// 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
|
|
|
|
|
// terms of the GNU General Public License as published by the
|
|
|
|
|
// Free Software Foundation; either version 3, or (at your option)
|
|
|
|
|
// any later version.
|
|
|
|
|
|
|
|
|
|
// This library 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 for more details.
|
|
|
|
|
|
|
|
|
|
// Under Section 7 of GPL version 3, you are granted additional
|
|
|
|
|
// permissions described in the GCC Runtime Library Exception, version
|
|
|
|
|
// 3.1, as published by the Free Software Foundation.
|
|
|
|
|
|
|
|
|
|
// You should have received a copy of the GNU General Public License and
|
|
|
|
|
// a copy of the GCC Runtime Library Exception along with this program;
|
|
|
|
|
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
|
|
|
// <http://www.gnu.org/licenses/>.
|
|
|
|
|
|
|
|
|
|
#include <ext/atomicity.h>
|
|
|
|
|
|
|
|
|
|
/* We cannot use the cpu/powerpc/bits/atomicity.h inline assembly
|
|
|
|
|
definitions for these operations since they depend on operations
|
|
|
|
|
that are not available on the original POWER architecture. AIX
|
|
|
|
|
still runs on the POWER architecture, so it would be incorrect to
|
|
|
|
|
assume the existence of these instructions.
|
|
|
|
|
|
|
|
|
|
The definition of _Atomic_word must match the type pointed to by
|
|
|
|
|
atomic_p in <sys/atomic_op.h>. */
|
|
|
|
|
|
|
|
|
|
extern "C"
|
|
|
|
|
{
|
|
|
|
|
#include <sys/atomic_op.h>
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
|
|
|
|
|
{
|
|
|
|
|
_GLIBCXX_BEGIN_NAMESPACE_VERSION
|
|
|
|
|
|
|
|
|
|
_Atomic_word
|
|
|
|
|
__attribute__ ((__unused__))
|
|
|
|
|
__exchange_and_add (volatile _Atomic_word* __mem, int __val) throw ()
|
|
|
|
|
{ return ::fetch_and_add(const_cast<atomic_p>(__mem), __val); }
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
__attribute__ ((__unused__))
|
|
|
|
|
__atomic_add (volatile _Atomic_word* __mem, int __val) throw ()
|
|
|
|
|
{ (void) ::fetch_and_add(const_cast<atomic_p>(__mem), __val); }
|
|
|
|
|
|
|
|
|
|
_GLIBCXX_END_NAMESPACE_VERSION
|
|
|
|
|
} // namespace
|
