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//
// detail/descriptor_ops.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// 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 ASIO_DETAIL_DESCRIPTOR_OPS_HPP
#define ASIO_DETAIL_DESCRIPTOR_OPS_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if !defined(ASIO_WINDOWS) \
&& !defined(ASIO_WINDOWS_RUNTIME) \
&& !defined(__CYGWIN__)
#include <cstddef>
#include "asio/error.hpp"
#include "asio/error_code.hpp"
#include "asio/detail/socket_types.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
namespace descriptor_ops {
// Descriptor state bits.
enum
{
// The user wants a non-blocking descriptor.
user_set_non_blocking = 1,
// The descriptor has been set non-blocking.
internal_non_blocking = 2,
// Helper "state" used to determine whether the descriptor is non-blocking.
non_blocking = user_set_non_blocking | internal_non_blocking,
// The descriptor may have been dup()-ed.
possible_dup = 4
};
typedef unsigned char state_type;
template <typename ReturnType>
inline ReturnType error_wrapper(ReturnType return_value,
asio::error_code& ec)
{
ec = asio::error_code(errno,
asio::error::get_system_category());
return return_value;
}
ASIO_DECL int open(const char* path, int flags,
asio::error_code& ec);
ASIO_DECL int close(int d, state_type& state,
asio::error_code& ec);
ASIO_DECL bool set_user_non_blocking(int d,
state_type& state, bool value, asio::error_code& ec);
ASIO_DECL bool set_internal_non_blocking(int d,
state_type& state, bool value, asio::error_code& ec);
typedef iovec buf;
ASIO_DECL std::size_t sync_read(int d, state_type state, buf* bufs,
std::size_t count, bool all_empty, asio::error_code& ec);
ASIO_DECL bool non_blocking_read(int d, buf* bufs, std::size_t count,
asio::error_code& ec, std::size_t& bytes_transferred);
ASIO_DECL std::size_t sync_write(int d, state_type state,
const buf* bufs, std::size_t count, bool all_empty,
asio::error_code& ec);
ASIO_DECL bool non_blocking_write(int d,
const buf* bufs, std::size_t count,
asio::error_code& ec, std::size_t& bytes_transferred);
ASIO_DECL int ioctl(int d, state_type& state, long cmd,
ioctl_arg_type* arg, asio::error_code& ec);
ASIO_DECL int fcntl(int d, int cmd, asio::error_code& ec);
ASIO_DECL int fcntl(int d, int cmd,
long arg, asio::error_code& ec);
ASIO_DECL int poll_read(int d,
state_type state, asio::error_code& ec);
ASIO_DECL int poll_write(int d,
state_type state, asio::error_code& ec);
ASIO_DECL int poll_error(int d,
state_type state, asio::error_code& ec);
} // namespace descriptor_ops
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#if defined(ASIO_HEADER_ONLY)
# include "asio/detail/impl/descriptor_ops.ipp"
#endif // defined(ASIO_HEADER_ONLY)
#endif // !defined(ASIO_WINDOWS)
// && !defined(ASIO_WINDOWS_RUNTIME)
// && !defined(__CYGWIN__)
#endif // ASIO_DETAIL_DESCRIPTOR_OPS_HPP
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