int rr_flush (rr_dev dev)
{
#ifndef WIN32
/* Disable non-blocking mode */
int flags;
if ((flags = fcntl (dev->fd, F_GETFL, 0)) < 0)
return flags;
if (fcntl (dev->fd, F_SETFL, flags & ~O_NONBLOCK) == -1)
return -1;
#endif
int result = 0;
while (rr_dev_buffered (dev) && result >= 0)
result = rr_dev_handle_writable (dev);
#ifndef WIN32
/* Restore original mode */
if (result >= 0)
result = fcntl (dev->fd, F_SETFL, flags);
else
fcntl (dev->fd, F_SETFL, flags);
#endif
return result;
}
bool Model::handle_dev_fd (Glib::IOCondition cond)
{
int result;
if (cond & Glib::IO_IN) {
result = rr_dev_handle_readable (m_device);
if (result < 0)
error ("Error reading from device!", strerror (errno));
}
if (cond & Glib::IO_OUT) {
result = rr_dev_handle_writable (m_device);
if (result < 0)
error ("Error writing to device!", strerror (errno));
}
if (cond & (Glib::IO_ERR | Glib::IO_HUP))
serial_try_connect (false);
return true;
}
bool Printer::handle_dev_fd (Glib::IOCondition cond)
{
if (device==NULL) return false;
int result;
if (cond & Glib::IO_IN) {
result = rr_dev_handle_readable (device);
if (result < 0)
error (_("Error reading from device!"), std::strerror (errno));
}
// try to avoid reading and writing at exactly the same time
else if (cond & Glib::IO_OUT) {
result = rr_dev_handle_writable (device);
if (result < 0)
error (_("Error writing to device!"), std::strerror (errno));
}
if (cond & (Glib::IO_ERR | Glib::IO_HUP))
serial_try_connect (false);
return true;
}
