annotate DEPENDENCIES/generic/include/boost/thread/win32/interlocked_read.hpp @ 133:4acb5d8d80b6 tip

Don't fail environmental check if README.md exists (but .txt and no-suffix don't)
author Chris Cannam
date Tue, 30 Jul 2019 12:25:44 +0100
parents c530137014c0
children
rev   line source
Chris@16 1 #ifndef BOOST_THREAD_DETAIL_INTERLOCKED_READ_WIN32_HPP
Chris@16 2 #define BOOST_THREAD_DETAIL_INTERLOCKED_READ_WIN32_HPP
Chris@16 3
Chris@16 4 // interlocked_read_win32.hpp
Chris@16 5 //
Chris@16 6 // (C) Copyright 2005-8 Anthony Williams
Chris@16 7 // (C) Copyright 2012 Vicente J. Botet Escriba
Chris@16 8 //
Chris@16 9 // Distributed under the Boost Software License, Version 1.0. (See
Chris@16 10 // accompanying file LICENSE_1_0.txt or copy at
Chris@16 11 // http://www.boost.org/LICENSE_1_0.txt)
Chris@16 12
Chris@16 13 #include <boost/detail/interlocked.hpp>
Chris@16 14 #include <boost/thread/detail/config.hpp>
Chris@16 15
Chris@16 16 #include <boost/config/abi_prefix.hpp>
Chris@16 17
Chris@16 18 #ifdef BOOST_MSVC
Chris@16 19
Chris@16 20 namespace boost
Chris@16 21 {
Chris@16 22 namespace detail
Chris@16 23 {
Chris@101 24 // Since VS2005 volatile reads always acquire
Chris@16 25 inline long interlocked_read_acquire(long volatile* x) BOOST_NOEXCEPT
Chris@16 26 {
Chris@16 27 long const res=*x;
Chris@16 28 return res;
Chris@16 29 }
Chris@16 30 inline void* interlocked_read_acquire(void* volatile* x) BOOST_NOEXCEPT
Chris@16 31 {
Chris@16 32 void* const res=*x;
Chris@16 33 return res;
Chris@16 34 }
Chris@16 35
Chris@101 36 // Since VS2005 volatile writes always release
Chris@16 37 inline void interlocked_write_release(long volatile* x,long value) BOOST_NOEXCEPT
Chris@16 38 {
Chris@16 39 *x=value;
Chris@16 40 }
Chris@16 41 inline void interlocked_write_release(void* volatile* x,void* value) BOOST_NOEXCEPT
Chris@16 42 {
Chris@16 43 *x=value;
Chris@16 44 }
Chris@16 45 }
Chris@16 46 }
Chris@16 47
Chris@16 48 #else
Chris@16 49
Chris@16 50 namespace boost
Chris@16 51 {
Chris@16 52 namespace detail
Chris@16 53 {
Chris@16 54 inline long interlocked_read_acquire(long volatile* x) BOOST_NOEXCEPT
Chris@16 55 {
Chris@16 56 return BOOST_INTERLOCKED_COMPARE_EXCHANGE(x,0,0);
Chris@16 57 }
Chris@16 58 inline void* interlocked_read_acquire(void* volatile* x) BOOST_NOEXCEPT
Chris@16 59 {
Chris@16 60 return BOOST_INTERLOCKED_COMPARE_EXCHANGE_POINTER(x,0,0);
Chris@16 61 }
Chris@16 62 inline void interlocked_write_release(long volatile* x,long value) BOOST_NOEXCEPT
Chris@16 63 {
Chris@16 64 BOOST_INTERLOCKED_EXCHANGE(x,value);
Chris@16 65 }
Chris@16 66 inline void interlocked_write_release(void* volatile* x,void* value) BOOST_NOEXCEPT
Chris@16 67 {
Chris@16 68 BOOST_INTERLOCKED_EXCHANGE_POINTER(x,value);
Chris@16 69 }
Chris@16 70 }
Chris@16 71 }
Chris@16 72
Chris@16 73 #endif
Chris@16 74
Chris@16 75 #include <boost/config/abi_suffix.hpp>
Chris@16 76
Chris@16 77 #endif