basic_serial_port和async_read_until

Question

我正在尝试将boost::shared_ptr与async_read_until一起使用，但无法使其正常运行。这是我的简化代码：

头

boost::asio::io_service io_service;
typedef boost::shared_ptr<boost::asio::serial_port> serial_port_ptr;
serial_port_ptr serial_port;
boost::asio::streambuf response_data;
char delimiter = '\n';
boost::system::error_code error;

连接

serial_port = serial_port_ptr(new boost::asio::serial_port(io_service));
serial_port->open("/dev/ttyS0", error);

读

boost::asio::async_read_until(
  serial_port.get(), response_data, delimiter,
  boost::bind(
    &serial_comm::data_received,
      this, boost::asio::placeholders::error,
      boost::asio::placeholders::bytes_transferred
  )
);

我得到的错误是no type named 'type' in 'struct std::enable_if<false, void>'。谢谢。

Answer 1

您已提供指针作为boost::asio::async_read_until的输入而非参考。它应该像这样重写：

boost::asio::async_read_until(
  *serial_port, response_data, delimiter,
  boost::bind(
    &serial_comm::data_received,
      this, boost::asio::placeholders::error,
      boost::asio::placeholders::bytes_transferred
  )
);