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Diffstat (limited to 'boost/process/detail/posix/compare_handles.hpp')
| -rw-r--r-- | boost/process/detail/posix/compare_handles.hpp | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/boost/process/detail/posix/compare_handles.hpp b/boost/process/detail/posix/compare_handles.hpp new file mode 100644 index 0000000000..634757215f --- /dev/null +++ b/boost/process/detail/posix/compare_handles.hpp @@ -0,0 +1,42 @@ +// Copyright (c) 2016 Klemens D. Morgenstern +// +// 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 BOOST_PROCESS_DETAIL_POSIX_COMPARE_HANDLES_HPP_ +#define BOOST_PROCESS_DETAIL_POSIX_COMPARE_HANDLES_HPP_ + + +#include <boost/process/detail/config.hpp> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> + +namespace boost { namespace process { namespace detail { namespace posix { + + +inline bool compare_handles(int lhs, int rhs) +{ + + if ((lhs == -1) || (rhs == -1)) + return false; + + if (lhs == rhs) + return true; + + struct stat stat1, stat2; + if(fstat(lhs, &stat1) < 0) ::boost::process::detail::throw_last_error("fstat() failed"); + if(fstat(rhs, &stat2) < 0) ::boost::process::detail::throw_last_error("fstat() failed"); + + return (stat1.st_dev == stat2.st_dev) && (stat1.st_ino == stat2.st_ino); +} + + + + + +}}}} + + + +#endif /* BOOST_PROCESS_DETAIL_POSIX_COMPARE_HANDLES_HPP_ */ |