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

   1 //
   2 // detail/descriptor_ops.hpp
   3 // ~~~~~~~~~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2020 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 inline void get_last_error(
  55     boost::system::error_code& ec, bool is_error_condition)
  56 {
  57   if (!is_error_condition)
  58   {
  59     ec.assign(0, ec.category());
  60   }
  61   else
  62   {
  63     ec = boost::system::error_code(errno,
  64         boost::asio::error::get_system_category());
  65   }
  66 }
  67
  68 BOOST_ASIO_DECL int open(const char* path, int flags,
  69     boost::system::error_code& ec);
  70
  71 BOOST_ASIO_DECL int close(int d, state_type& state,
  72     boost::system::error_code& ec);
  73
  74 BOOST_ASIO_DECL bool set_user_non_blocking(int d,
  75     state_type& state, bool value, boost::system::error_code& ec);
  76
  77 BOOST_ASIO_DECL bool set_internal_non_blocking(int d,
  78     state_type& state, bool value, boost::system::error_code& ec);
  79
  80 typedef iovec buf;
  81
  82 BOOST_ASIO_DECL std::size_t sync_read(int d, state_type state, buf* bufs,
  83     std::size_t count, bool all_empty, boost::system::error_code& ec);
  84
  85 BOOST_ASIO_DECL std::size_t sync_read1(int d, state_type state, void* data,
  86     std::size_t size, boost::system::error_code& ec);
  87
  88 BOOST_ASIO_DECL bool non_blocking_read(int d, buf* bufs, std::size_t count,
  89     boost::system::error_code& ec, std::size_t& bytes_transferred);
  90
  91 BOOST_ASIO_DECL bool non_blocking_read1(int d, void* data, std::size_t size,
  92     boost::system::error_code& ec, std::size_t& bytes_transferred);
  93
  94 BOOST_ASIO_DECL std::size_t sync_write(int d, state_type state,
  95     const buf* bufs, std::size_t count, bool all_empty,
  96     boost::system::error_code& ec);
  97
  98 BOOST_ASIO_DECL std::size_t sync_write1(int d, state_type state,
  99     const void* data, std::size_t size, boost::system::error_code& ec);
 100
 101 BOOST_ASIO_DECL bool non_blocking_write(int d,
 102     const buf* bufs, std::size_t count,
 103     boost::system::error_code& ec, std::size_t& bytes_transferred);
 104
 105 BOOST_ASIO_DECL bool non_blocking_write1(int d,
 106     const void* data, std::size_t size,
 107     boost::system::error_code& ec, std::size_t& bytes_transferred);
 108
 109 BOOST_ASIO_DECL int ioctl(int d, state_type& state, long cmd,
 110     ioctl_arg_type* arg, boost::system::error_code& ec);
 111
 112 BOOST_ASIO_DECL int fcntl(int d, int cmd, boost::system::error_code& ec);
 113
 114 BOOST_ASIO_DECL int fcntl(int d, int cmd,
 115     long arg, boost::system::error_code& ec);
 116
 117 BOOST_ASIO_DECL int poll_read(int d,
 118     state_type state, boost::system::error_code& ec);
 119
 120 BOOST_ASIO_DECL int poll_write(int d,
 121     state_type state, boost::system::error_code& ec);
 122
 123 BOOST_ASIO_DECL int poll_error(int d,
 124     state_type state, boost::system::error_code& ec);
 125
 126 } // namespace descriptor_ops
 127 } // namespace detail
 128 } // namespace asio
 129 } // namespace boost
 130
 131 #include <boost/asio/detail/pop_options.hpp>
 132
 133 #if defined(BOOST_ASIO_HEADER_ONLY)
 134 # include <boost/asio/detail/impl/descriptor_ops.ipp>
 135 #endif // defined(BOOST_ASIO_HEADER_ONLY)
 136
 137 #endif // !defined(BOOST_ASIO_WINDOWS)
 138        //   && !defined(BOOST_ASIO_WINDOWS_RUNTIME)
 139        //   && !defined(__CYGWIN__)
 140
 141 #endif // BOOST_ASIO_DETAIL_DESCRIPTOR_OPS_HPP