ceph/src/boost/boost/asio/detail/descriptor_ops.hpp

   1 //
   2 // detail/descriptor_ops.hpp
   3 // ~~~~~~~~~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2017 Christopher M. Kohlhoff (chris at kohlhoff dot com)
   6 //
   7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   9 //
  10
  11 #ifndef BOOST_ASIO_DETAIL_DESCRIPTOR_OPS_HPP
  12 #define BOOST_ASIO_DETAIL_DESCRIPTOR_OPS_HPP
  13
  14 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  15 # pragma once
  16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  17
  18 #include <boost/asio/detail/config.hpp>
  19
  20 #if !defined(BOOST_ASIO_WINDOWS) \
  21   && !defined(BOOST_ASIO_WINDOWS_RUNTIME) \
  22   && !defined(__CYGWIN__)
  23
  24 #include <cstddef>
  25 #include <boost/asio/error.hpp>
  26 #include <boost/system/error_code.hpp>
  27 #include <boost/asio/detail/socket_types.hpp>
  28
  29 #include <boost/asio/detail/push_options.hpp>
  30
  31 namespace boost {
  32 namespace asio {
  33 namespace detail {
  34 namespace descriptor_ops {
  35
  36 // Descriptor state bits.
  37 enum
  38 {
  39   // The user wants a non-blocking descriptor.
  40   user_set_non_blocking = 1,
  41
  42   // The descriptor has been set non-blocking.
  43   internal_non_blocking = 2,
  44
  45   // Helper "state" used to determine whether the descriptor is non-blocking.
  46   non_blocking = user_set_non_blocking | internal_non_blocking,
  47
  48   // The descriptor may have been dup()-ed.
  49   possible_dup = 4
  50 };
  51
  52 typedef unsigned char state_type;
  53
  54 template <typename ReturnType>
  55 inline ReturnType error_wrapper(ReturnType return_value,
  56     boost::system::error_code& ec)
  57 {
  58   ec = boost::system::error_code(errno,
  59       boost::asio::error::get_system_category());
  60   return return_value;
  61 }
  62
  63 BOOST_ASIO_DECL int open(const char* path, int flags,
  64     boost::system::error_code& ec);
  65
  66 BOOST_ASIO_DECL int close(int d, state_type& state,
  67     boost::system::error_code& ec);
  68
  69 BOOST_ASIO_DECL bool set_user_non_blocking(int d,
  70     state_type& state, bool value, boost::system::error_code& ec);
  71
  72 BOOST_ASIO_DECL bool set_internal_non_blocking(int d,
  73     state_type& state, bool value, boost::system::error_code& ec);
  74
  75 typedef iovec buf;
  76
  77 BOOST_ASIO_DECL std::size_t sync_read(int d, state_type state, buf* bufs,
  78     std::size_t count, bool all_empty, boost::system::error_code& ec);
  79
  80 BOOST_ASIO_DECL bool non_blocking_read(int d, buf* bufs, std::size_t count,
  81     boost::system::error_code& ec, std::size_t& bytes_transferred);
  82
  83 BOOST_ASIO_DECL std::size_t sync_write(int d, state_type state,
  84     const buf* bufs, std::size_t count, bool all_empty,
  85     boost::system::error_code& ec);
  86
  87 BOOST_ASIO_DECL bool non_blocking_write(int d,
  88     const buf* bufs, std::size_t count,
  89     boost::system::error_code& ec, std::size_t& bytes_transferred);
  90
  91 BOOST_ASIO_DECL int ioctl(int d, state_type& state, long cmd,
  92     ioctl_arg_type* arg, boost::system::error_code& ec);
  93
  94 BOOST_ASIO_DECL int fcntl(int d, int cmd, boost::system::error_code& ec);
  95
  96 BOOST_ASIO_DECL int fcntl(int d, int cmd,
  97     long arg, boost::system::error_code& ec);
  98
  99 BOOST_ASIO_DECL int poll_read(int d,
 100     state_type state, boost::system::error_code& ec);
 101
 102 BOOST_ASIO_DECL int poll_write(int d,
 103     state_type state, boost::system::error_code& ec);
 104
 105 BOOST_ASIO_DECL int poll_error(int d,
 106     state_type state, boost::system::error_code& ec);
 107
 108 } // namespace descriptor_ops
 109 } // namespace detail
 110 } // namespace asio
 111 } // namespace boost
 112
 113 #include <boost/asio/detail/pop_options.hpp>
 114
 115 #if defined(BOOST_ASIO_HEADER_ONLY)
 116 # include <boost/asio/detail/impl/descriptor_ops.ipp>
 117 #endif // defined(BOOST_ASIO_HEADER_ONLY)
 118
 119 #endif // !defined(BOOST_ASIO_WINDOWS)
 120        //   && !defined(BOOST_ASIO_WINDOWS_RUNTIME)
 121        //   && !defined(__CYGWIN__)
 122
 123 #endif // BOOST_ASIO_DETAIL_DESCRIPTOR_OPS_HPP