diff options
Diffstat (limited to 'contrib/libstdc++/config/os/aix/atomicity.h')
-rw-r--r-- | contrib/libstdc++/config/os/aix/atomicity.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/contrib/libstdc++/config/os/aix/atomicity.h b/contrib/libstdc++/config/os/aix/atomicity.h new file mode 100644 index 0000000..af4fa5a --- /dev/null +++ b/contrib/libstdc++/config/os/aix/atomicity.h @@ -0,0 +1,59 @@ +// Low-level functions for atomic operations: AIX version -*- C++ -*- + +// Copyright (C) 2000, 2001 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 +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 2, 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. + +// You should have received a copy of the GNU General Public License along +// with this library; see the file COPYING. If not, write to the Free +// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, +// USA. + +// As a special exception, you may use this file as part of a free software +// library without restriction. Specifically, if other files instantiate +// templates or use macros or inline functions from this file, or you compile +// this file and link it with other files to produce an executable, this +// file does not by itself cause the resulting executable to be covered by +// the GNU General Public License. This exception does not however +// invalidate any other reasons why the executable file might be covered by +// the GNU General Public License. + +#ifndef _BITS_ATOMICITY_H +#define _BITS_ATOMICITY_H 1 + +/* 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. */ + +/* This should match the type pointed to by atomic_p in + <sys/atomic_op.h>. */ +typedef int _Atomic_word; + +#include <sys/atomic_op.h> + +static inline int +__attribute__ ((__unused__)) +__exchange_and_add (atomic_p __mem, int __val) +{ + return fetch_and_add (__mem, __val); +} + +static inline void +__attribute__ ((__unused__)) +__atomic_add (atomic_p __mem, int __val) +{ + (void) fetch_and_add (__mem, __val); +} + +#endif /* atomicity.h */ |