/src/contrib/boost/thread/win32/interlocked_read.hpp
http://pythonocc.googlecode.com/ · C++ Header · 80 lines · 61 code · 12 blank · 7 comment · 0 complexity · c1c5c00c5a8c20d8c0a7edc12b5e91eb MD5 · raw file
- #ifndef BOOST_THREAD_DETAIL_INTERLOCKED_READ_WIN32_HPP
- #define BOOST_THREAD_DETAIL_INTERLOCKED_READ_WIN32_HPP
- // interlocked_read_win32.hpp
- //
- // (C) Copyright 2005-8 Anthony Williams
- //
- // 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)
- #include <boost/detail/interlocked.hpp>
- #include <boost/config/abi_prefix.hpp>
- #ifdef BOOST_MSVC
- extern "C" void _ReadWriteBarrier(void);
- #pragma intrinsic(_ReadWriteBarrier)
- namespace boost
- {
- namespace detail
- {
- inline long interlocked_read_acquire(long volatile* x)
- {
- long const res=*x;
- _ReadWriteBarrier();
- return res;
- }
- inline void* interlocked_read_acquire(void* volatile* x)
- {
- void* const res=*x;
- _ReadWriteBarrier();
- return res;
- }
- inline void interlocked_write_release(long volatile* x,long value)
- {
- _ReadWriteBarrier();
- *x=value;
- }
- inline void interlocked_write_release(void* volatile* x,void* value)
- {
- _ReadWriteBarrier();
- *x=value;
- }
- }
- }
- #else
- namespace boost
- {
- namespace detail
- {
- inline long interlocked_read_acquire(long volatile* x)
- {
- return BOOST_INTERLOCKED_COMPARE_EXCHANGE(x,0,0);
- }
- inline void* interlocked_read_acquire(void* volatile* x)
- {
- return BOOST_INTERLOCKED_COMPARE_EXCHANGE_POINTER(x,0,0);
- }
- inline void interlocked_write_release(long volatile* x,long value)
- {
- BOOST_INTERLOCKED_EXCHANGE(x,value);
- }
- inline void interlocked_write_release(void* volatile* x,void* value)
- {
- BOOST_INTERLOCKED_EXCHANGE_POINTER(x,value);
- }
- }
- }
- #endif
- #include <boost/config/abi_suffix.hpp>
- #endif