/usr/include/asio/detail/reactive_serial_port_service.hpp is in libasio-dev 1.4.1-3ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 | //
// reactive_serial_port_service.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2008 Christopher M. Kohlhoff (chris at kohlhoff dot com)
// Copyright (c) 2008 Rep Invariant Systems, Inc. (info@repinvariant.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_REACTIVE_SERIAL_PORT_SERVICE_HPP
#define ASIO_DETAIL_REACTIVE_SERIAL_PORT_SERVICE_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/push_options.hpp"
#include "asio/detail/push_options.hpp"
#include <cstring>
#include <string>
#include "asio/detail/pop_options.hpp"
#if !defined(BOOST_WINDOWS) && !defined(__CYGWIN__)
#include "asio/detail/push_options.hpp"
#include <termios.h>
#include "asio/detail/pop_options.hpp"
#include "asio/error.hpp"
#include "asio/io_service.hpp"
#include "asio/detail/descriptor_ops.hpp"
#include "asio/detail/reactive_descriptor_service.hpp"
namespace asio {
namespace detail {
// Extend reactive_descriptor_service to provide serial port support.
template <typename Reactor>
class reactive_serial_port_service
: public asio::detail::service_base<
reactive_serial_port_service<Reactor> >
{
public:
// The native type of a stream handle.
typedef typename reactive_descriptor_service<Reactor>::native_type
native_type;
// The implementation type of the stream handle.
typedef typename reactive_descriptor_service<Reactor>::implementation_type
implementation_type;
reactive_serial_port_service(asio::io_service& io_service)
: asio::detail::service_base<
reactive_serial_port_service>(io_service),
descriptor_service_(asio::use_service<
reactive_descriptor_service<Reactor> >(io_service))
{
}
// Destroy all user-defined handler objects owned by the service.
void shutdown_service()
{
}
// Construct a new handle implementation.
void construct(implementation_type& impl)
{
descriptor_service_.construct(impl);
}
// Destroy a handle implementation.
void destroy(implementation_type& impl)
{
descriptor_service_.destroy(impl);
}
// Open the serial port using the specified device name.
asio::error_code open(implementation_type& impl,
const std::string& device, asio::error_code& ec)
{
if (is_open(impl))
{
ec = asio::error::already_open;
return ec;
}
int fd = descriptor_ops::open(device.c_str(),
O_RDWR | O_NONBLOCK | O_NOCTTY, ec);
if (fd < 0)
return ec;
int s = descriptor_ops::fcntl(fd, F_GETFL, ec);
if (s >= 0)
s = descriptor_ops::fcntl(fd, F_SETFL, s | O_NONBLOCK, ec);
if (s < 0)
{
asio::error_code ignored_ec;
descriptor_ops::close(fd, ignored_ec);
return ec;
}
// Set up default serial port options.
termios ios;
descriptor_ops::clear_error(ec);
s = descriptor_ops::error_wrapper(::tcgetattr(fd, &ios), ec);
if (s >= 0)
{
#if defined(_BSD_SOURCE)
::cfmakeraw(&ios);
#else
ios.c_iflag &= ~(IGNBRK | BRKINT | PARMRK
| ISTRIP | INLCR | IGNCR | ICRNL | IXON);
ios.c_oflag &= ~OPOST;
ios.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
ios.c_cflag &= ~(CSIZE | PARENB);
ios.c_cflag |= CS8;
#endif
ios.c_iflag |= IGNPAR;
ios.c_cflag |= CREAD | CLOCAL;
descriptor_ops::clear_error(ec);
s = descriptor_ops::error_wrapper(::tcsetattr(fd, TCSANOW, &ios), ec);
}
if (s < 0)
{
asio::error_code ignored_ec;
descriptor_ops::close(fd, ignored_ec);
return ec;
}
// We're done. Take ownership of the serial port descriptor.
if (descriptor_service_.assign(impl, fd, ec))
{
asio::error_code ignored_ec;
descriptor_ops::close(fd, ignored_ec);
}
return ec;
}
// Assign a native handle to a handle implementation.
asio::error_code assign(implementation_type& impl,
const native_type& native_descriptor, asio::error_code& ec)
{
return descriptor_service_.assign(impl, native_descriptor, ec);
}
// Determine whether the handle is open.
bool is_open(const implementation_type& impl) const
{
return descriptor_service_.is_open(impl);
}
// Destroy a handle implementation.
asio::error_code close(implementation_type& impl,
asio::error_code& ec)
{
return descriptor_service_.close(impl, ec);
}
// Get the native handle representation.
native_type native(implementation_type& impl)
{
return descriptor_service_.native(impl);
}
// Cancel all operations associated with the handle.
asio::error_code cancel(implementation_type& impl,
asio::error_code& ec)
{
return descriptor_service_.cancel(impl, ec);
}
// Set an option on the serial port.
template <typename SettableSerialPortOption>
asio::error_code set_option(implementation_type& impl,
const SettableSerialPortOption& option, asio::error_code& ec)
{
termios ios;
descriptor_ops::clear_error(ec);
descriptor_ops::error_wrapper(::tcgetattr(
descriptor_service_.native(impl), &ios), ec);
if (ec)
return ec;
if (option.store(ios, ec))
return ec;
descriptor_ops::clear_error(ec);
descriptor_ops::error_wrapper(::tcsetattr(
descriptor_service_.native(impl), TCSANOW, &ios), ec);
return ec;
}
// Get an option from the serial port.
template <typename GettableSerialPortOption>
asio::error_code get_option(const implementation_type& impl,
GettableSerialPortOption& option, asio::error_code& ec) const
{
termios ios;
descriptor_ops::clear_error(ec);
descriptor_ops::error_wrapper(::tcgetattr(
descriptor_service_.native(impl), &ios), ec);
if (ec)
return ec;
return option.load(ios, ec);
}
// Send a break sequence to the serial port.
asio::error_code send_break(implementation_type& impl,
asio::error_code& ec)
{
descriptor_ops::clear_error(ec);
descriptor_ops::error_wrapper(::tcsendbreak(
descriptor_service_.native(impl), 0), ec);
return ec;
}
// Write the given data. Returns the number of bytes sent.
template <typename ConstBufferSequence>
size_t write_some(implementation_type& impl,
const ConstBufferSequence& buffers, asio::error_code& ec)
{
return descriptor_service_.write_some(impl, buffers, ec);
}
// Start an asynchronous write. The data being written must be valid for the
// lifetime of the asynchronous operation.
template <typename ConstBufferSequence, typename Handler>
void async_write_some(implementation_type& impl,
const ConstBufferSequence& buffers, Handler handler)
{
descriptor_service_.async_write_some(impl, buffers, handler);
}
// Read some data. Returns the number of bytes received.
template <typename MutableBufferSequence>
size_t read_some(implementation_type& impl,
const MutableBufferSequence& buffers, asio::error_code& ec)
{
return descriptor_service_.read_some(impl, buffers, ec);
}
// Start an asynchronous read. The buffer for the data being received must be
// valid for the lifetime of the asynchronous operation.
template <typename MutableBufferSequence, typename Handler>
void async_read_some(implementation_type& impl,
const MutableBufferSequence& buffers, Handler handler)
{
descriptor_service_.async_read_some(impl, buffers, handler);
}
private:
// The handle service used for initiating asynchronous operations.
reactive_descriptor_service<Reactor>& descriptor_service_;
};
} // namespace detail
} // namespace asio
#endif // !defined(BOOST_WINDOWS) && !defined(__CYGWIN__)
#include "asio/detail/pop_options.hpp"
#endif // ASIO_DETAIL_REACTIVE_SERIAL_PORT_SERVICE_HPP
|