103 lines
2.6 KiB
C++
103 lines
2.6 KiB
C++
// Copyright (c) 2006, 2007 Julio M. Merino Vidal
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// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
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// Copyright (c) 2009 Boris Schaeling
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// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
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// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
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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_POSIX_FD_HPP
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#define BOOST_PROCESS_DETAIL_POSIX_FD_HPP
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#include <boost/process/detail/posix/handler.hpp>
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#include <unistd.h>
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#include <boost/process/detail/used_handles.hpp>
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#include <array>
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namespace boost { namespace process { namespace detail { namespace posix {
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struct close_fd_ : handler_base_ext, ::boost::process::detail::uses_handles
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{
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close_fd_(int fd) : fd_(fd) {}
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template <class PosixExecutor>
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void on_exec_setup(PosixExecutor& e) const
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{
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if (::close(fd_) == -1)
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e.set_error(::boost::process::detail::get_last_error(), "close() failed");
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}
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int get_used_handles() {return fd_;}
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private:
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int fd_;
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};
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template <class Range>
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struct close_fds_ : handler_base_ext, ::boost::process::detail::uses_handles
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{
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public:
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close_fds_(const Range &fds) : fds_(fds) {}
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template <class PosixExecutor>
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void on_exec_setup(PosixExecutor& e) const
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{
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for (auto & fd_ : fds_)
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if (::close(fd_) == -1)
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{
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e.set_error(::boost::process::detail::get_last_error(), "close() failed");
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break;
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}
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}
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Range& get_used_handles() {return fds_;}
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private:
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Range fds_;
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};
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template <class FileDescriptor>
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struct bind_fd_ : handler_base_ext, ::boost::process::detail::uses_handles
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{
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public:
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bind_fd_(int id, const FileDescriptor &fd) : id_(id), fd_(fd) {}
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template <class PosixExecutor>
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void on_exec_setup(PosixExecutor& e) const
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{
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if (::dup2(fd_, id_) == -1)
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e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
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}
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std::array<int, 2> get_used_handles() {return {id_, fd_};}
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private:
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int id_;
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FileDescriptor fd_;
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};
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struct fd_
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{
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constexpr fd_() {};
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close_fd_ close(int _fd) const {return close_fd_(_fd);}
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close_fds_<std::vector<int>> close(const std::initializer_list<int> & vec) const {return std::vector<int>(vec);}
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template<typename Range>
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close_fds_<Range> close(const Range & r) const {return r;}
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template <class FileDescriptor>
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bind_fd_<FileDescriptor> bind(int id, const FileDescriptor & fd) const {return {id, fd};}
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};
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}}}}
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#endif
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