42 lines
1.5 KiB
C++
42 lines
1.5 KiB
C++
// Copyright (c) 2016 Klemens D. Morgenstern
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_PROCESS_DETAIL_WINDOWS_COMPARE_HANDLES_HPP_
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#define BOOST_PROCESS_DETAIL_WINDOWS_COMPARE_HANDLES_HPP_
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#include <boost/winapi/handles.hpp>
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#include <boost/winapi/file_management.hpp>
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#include <boost/process/detail/config.hpp>
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namespace boost { namespace process { namespace detail { namespace windows {
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inline bool compare_handles(boost::winapi::HANDLE_ lhs, boost::winapi::HANDLE_ rhs)
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{
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if ( (lhs == ::boost::winapi::INVALID_HANDLE_VALUE_)
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|| (rhs == ::boost::winapi::INVALID_HANDLE_VALUE_))
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return false;
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if (lhs == rhs)
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return true;
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::boost::winapi::BY_HANDLE_FILE_INFORMATION_ lhs_info{0,{0,0},{0,0},{0,0},0,0,0,0,0,0};
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::boost::winapi::BY_HANDLE_FILE_INFORMATION_ rhs_info{0,{0,0},{0,0},{0,0},0,0,0,0,0,0};
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if (!::boost::winapi::GetFileInformationByHandle(lhs, &lhs_info))
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::boost::process::detail::throw_last_error("GetFileInformationByHandle");
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if (!::boost::winapi::GetFileInformationByHandle(rhs, &rhs_info))
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::boost::process::detail::throw_last_error("GetFileInformationByHandle");
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return (lhs_info.nFileIndexHigh == rhs_info.nFileIndexHigh)
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&& (lhs_info.nFileIndexLow == rhs_info.nFileIndexLow);
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}
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}}}}
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#endif /* BOOST_PROCESS_DETAIL_WINDOWS_COMPARE_HANDLES_HPP_ */
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