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//
// detail/impl/reactive_serial_port_service.ipp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 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_IMPL_REACTIVE_SERIAL_PORT_SERVICE_IPP
#define ASIO_DETAIL_IMPL_REACTIVE_SERIAL_PORT_SERVICE_IPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_HAS_SERIAL_PORT)
#if !defined(ASIO_WINDOWS) && !defined(__CYGWIN__)
#include <cstring>
#include "asio/detail/reactive_serial_port_service.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
reactive_serial_port_service::reactive_serial_port_service(
asio::io_context& io_context)
: service_base<reactive_serial_port_service>(io_context),
descriptor_service_(io_context)
{
}
void reactive_serial_port_service::shutdown()
{
descriptor_service_.shutdown();
}
asio::error_code reactive_serial_port_service::open(
reactive_serial_port_service::implementation_type& impl,
const std::string& device, asio::error_code& ec)
{
if (is_open(impl))
{
ec = asio::error::already_open;
return ec;
}
descriptor_ops::state_type state = 0;
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, state, ignored_ec);
return ec;
}
// Set up default serial port options.
termios ios;
errno = 0;
s = descriptor_ops::error_wrapper(::tcgetattr(fd, &ios), ec);
if (s >= 0)
{
#if defined(_BSD_SOURCE) || defined(_DEFAULT_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;
errno = 0;
s = descriptor_ops::error_wrapper(::tcsetattr(fd, TCSANOW, &ios), ec);
}
if (s < 0)
{
asio::error_code ignored_ec;
descriptor_ops::close(fd, state, 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, state, ignored_ec);
}
return ec;
}
asio::error_code reactive_serial_port_service::do_set_option(
reactive_serial_port_service::implementation_type& impl,
reactive_serial_port_service::store_function_type store,
const void* option, asio::error_code& ec)
{
termios ios;
errno = 0;
descriptor_ops::error_wrapper(::tcgetattr(
descriptor_service_.native_handle(impl), &ios), ec);
if (ec)
return ec;
if (store(option, ios, ec))
return ec;
errno = 0;
descriptor_ops::error_wrapper(::tcsetattr(
descriptor_service_.native_handle(impl), TCSANOW, &ios), ec);
return ec;
}
asio::error_code reactive_serial_port_service::do_get_option(
const reactive_serial_port_service::implementation_type& impl,
reactive_serial_port_service::load_function_type load,
void* option, asio::error_code& ec) const
{
termios ios;
errno = 0;
descriptor_ops::error_wrapper(::tcgetattr(
descriptor_service_.native_handle(impl), &ios), ec);
if (ec)
return ec;
return load(option, ios, ec);
}
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // !defined(ASIO_WINDOWS) && !defined(__CYGWIN__)
#endif // defined(ASIO_HAS_SERIAL_PORT)
#endif // ASIO_DETAIL_IMPL_REACTIVE_SERIAL_PORT_SERVICE_IPP
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