RTOS/rtems
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Added tcdrain(), cfgetospeed(0, cfsetospeed(), cfgetispeed(), and

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cfsetispeed().
This commit is contained in:
Joel Sherrill
1998-05-22 14:51:11 +00:00
parent e2476ed4d1
commit 119bced0fd
8 changed files with 222 additions and 6 deletions
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30
c/src/lib/libc/termios.c
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@@ -297,6 +297,31 @@ rtems_termios_open (
return RTEMS_SUCCESSFUL;
}
/*
* Drain output queue
*/
static void
drainOutput (struct rtems_termios_tty *tty)
{
rtems_interrupt_level level;
rtems_status_code sc;
if (tty->device.outputUsesInterrupts) {
rtems_interrupt_disable (level);
while (tty->rawOutBufTail != tty->rawOutBufHead) {
tty->rawOutBufState = rob_wait;
rtems_interrupt_enable (level);
sc = rtems_semaphore_obtain (tty->rawOutBufSemaphore,
RTEMS_WAIT,
RTEMS_NO_TIMEOUT);
if (sc != RTEMS_SUCCESSFUL)
rtems_fatal_error_occurred (sc);
rtems_interrupt_disable (level);
}
rtems_interrupt_enable (level);
}
}
rtems_status_code
rtems_termios_close (void *arg)
{
@@ -308,6 +333,7 @@ rtems_termios_close (void *arg)
if (sc != RTEMS_SUCCESSFUL)
rtems_fatal_error_occurred (sc);
if (--tty->refcount == 0) {
drainOutput (tty);
if (tty->device.lastClose)
(*tty->device.lastClose)(tty->major, tty->minor, arg);
if (tty->forw == NULL)
@@ -384,6 +410,10 @@ rtems_termios_ioctl (void *arg)
if (tty->device.setAttributes)
(*tty->device.setAttributes)(tty->minor, &tty->termios);
break;
case RTEMS_IO_TCDRAIN:
drainOutput (tty);
break;
}
rtems_semaphore_release (tty->osem);
args->ioctl_return = sc;