diff options
Diffstat (limited to 'third_party/msgpack/include/msgpack/gcc_atomic.hpp')
| -rw-r--r-- | third_party/msgpack/include/msgpack/gcc_atomic.hpp | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/third_party/msgpack/include/msgpack/gcc_atomic.hpp b/third_party/msgpack/include/msgpack/gcc_atomic.hpp new file mode 100644 index 0000000000..9656e5331b --- /dev/null +++ b/third_party/msgpack/include/msgpack/gcc_atomic.hpp @@ -0,0 +1,31 @@ +// +// MessagePack for C++ old gcc workaround for atomic operation +// +// Copyright (C) 2008-2013 FURUHASHI Sadayuki and KONDO Takatoshi +// +// Distributed under the Boost Software License, Version 1.0. +// (See accompanying file LICENSE_1_0.txt or copy at +// http://www.boost.org/LICENSE_1_0.txt) +// + +#ifndef MSGPACK_GCC_ATOMIC_HPP +#define MSGPACK_GCC_ATOMIC_HPP + +#if defined(__GNUC__) && ((__GNUC__*10 + __GNUC_MINOR__) < 41) + +#include "msgpack/gcc_atomic.h" +#include <bits/atomicity.h> + +int _msgpack_sync_decr_and_fetch(volatile _msgpack_atomic_counter_t* ptr) +{ + return __gnu_cxx::__exchange_and_add(ptr, -1) - 1; +} + +int _msgpack_sync_incr_and_fetch(volatile _msgpack_atomic_counter_t* ptr) +{ + return __gnu_cxx::__exchange_and_add(ptr, 1) + 1; +} + +#endif // old gcc workaround + +#endif /* gcc_atomic.hpp */ |