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

   1 //
   2 // detail/descriptor_ops.hpp
   3 // ~~~~~~~~~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2016 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/system/error_code.hpp>
  26 #include <boost/asio/detail/socket_types.hpp>
  27
  28 #include <boost/asio/detail/push_options.hpp>
  29
  30 namespace boost {
  31 namespace asio {
  32 namespace detail {
  33 namespace descriptor_ops {
  34
  35 // Descriptor state bits.
  36 enum
  37 {
  38   // The user wants a non-blocking descriptor.
  39   user_set_non_blocking = 1,
  40
  41   // The descriptor has been set non-blocking.
  42   internal_non_blocking = 2,
  43
  44   // Helper "state" used to determine whether the descriptor is non-blocking.
  45   non_blocking = user_set_non_blocking | internal_non_blocking,
  46
  47   // The descriptor may have been dup()-ed.
  48   possible_dup = 4
  49 };
  50
  51 typedef unsigned char state_type;
  52
  53 template <typename ReturnType>
  54 inline ReturnType error_wrapper(ReturnType return_value,
  55     boost::system::error_code& ec)
  56 {
  57   ec = boost::system::error_code(errno,
  58       boost::asio::error::get_system_category());
  59   return return_value;
  60 }
  61
  62 BOOST_ASIO_DECL int open(const char* path, int flags,
  63     boost::system::error_code& ec);
  64
  65 BOOST_ASIO_DECL int close(int d, state_type& state,
  66     boost::system::error_code& ec);
  67
  68 BOOST_ASIO_DECL bool set_user_non_blocking(int d,
  69     state_type& state, bool value, boost::system::error_code& ec);
  70
  71 BOOST_ASIO_DECL bool set_internal_non_blocking(int d,
  72     state_type& state, bool value, boost::system::error_code& ec);
  73
  74 typedef iovec buf;
  75
  76 BOOST_ASIO_DECL std::size_t sync_read(int d, state_type state, buf* bufs,
  77     std::size_t count, bool all_empty, boost::system::error_code& ec);
  78
  79 BOOST_ASIO_DECL bool non_blocking_read(int d, buf* bufs, std::size_t count,
  80     boost::system::error_code& ec, std::size_t& bytes_transferred);
  81
  82 BOOST_ASIO_DECL std::size_t sync_write(int d, state_type state,
  83     const buf* bufs, std::size_t count, bool all_empty,
  84     boost::system::error_code& ec);
  85
  86 BOOST_ASIO_DECL bool non_blocking_write(int d,
  87     const buf* bufs, std::size_t count,
  88     boost::system::error_code& ec, std::size_t& bytes_transferred);
  89
  90 BOOST_ASIO_DECL int ioctl(int d, state_type& state, long cmd,
  91     ioctl_arg_type* arg, boost::system::error_code& ec);
  92
  93 BOOST_ASIO_DECL int fcntl(int d, int cmd, boost::system::error_code& ec);
  94
  95 BOOST_ASIO_DECL int fcntl(int d, int cmd,
  96     long arg, boost::system::error_code& ec);
  97
  98 BOOST_ASIO_DECL int poll_read(int d,
  99     state_type state, boost::system::error_code& ec);
 100
 101 BOOST_ASIO_DECL int poll_write(int d,
 102     state_type state, boost::system::error_code& ec);
 103
 104 } // namespace descriptor_ops
 105 } // namespace detail
 106 } // namespace asio
 107 } // namespace boost
 108
 109 #include <boost/asio/detail/pop_options.hpp>
 110
 111 #if defined(BOOST_ASIO_HEADER_ONLY)
 112 # include <boost/asio/detail/impl/descriptor_ops.ipp>
 113 #endif // defined(BOOST_ASIO_HEADER_ONLY)
 114
 115 #endif // !defined(BOOST_ASIO_WINDOWS)
 116        //   && !defined(BOOST_ASIO_WINDOWS_RUNTIME)
 117        //   && !defined(__CYGWIN__)
 118
 119 #endif // BOOST_ASIO_DETAIL_DESCRIPTOR_OPS_HPP