/usr/include/boost/thread/win32/interlocked_read.hpp is in libboost1.55-dev 1.55.0+dfsg-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 | #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
// (C) Copyright 2012 Vicente J. Botet Escriba
//
// 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/thread/detail/config.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) BOOST_NOEXCEPT
{
long const res=*x;
_ReadWriteBarrier();
return res;
}
inline void* interlocked_read_acquire(void* volatile* x) BOOST_NOEXCEPT
{
void* const res=*x;
_ReadWriteBarrier();
return res;
}
inline void interlocked_write_release(long volatile* x,long value) BOOST_NOEXCEPT
{
_ReadWriteBarrier();
*x=value;
}
inline void interlocked_write_release(void* volatile* x,void* value) BOOST_NOEXCEPT
{
_ReadWriteBarrier();
*x=value;
}
}
}
#else
namespace boost
{
namespace detail
{
inline long interlocked_read_acquire(long volatile* x) BOOST_NOEXCEPT
{
return BOOST_INTERLOCKED_COMPARE_EXCHANGE(x,0,0);
}
inline void* interlocked_read_acquire(void* volatile* x) BOOST_NOEXCEPT
{
return BOOST_INTERLOCKED_COMPARE_EXCHANGE_POINTER(x,0,0);
}
inline void interlocked_write_release(long volatile* x,long value) BOOST_NOEXCEPT
{
BOOST_INTERLOCKED_EXCHANGE(x,value);
}
inline void interlocked_write_release(void* volatile* x,void* value) BOOST_NOEXCEPT
{
BOOST_INTERLOCKED_EXCHANGE_POINTER(x,value);
}
}
}
#endif
#include <boost/config/abi_suffix.hpp>
#endif
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