NetBSD/gnu/dist/gdb/nindy-share/ttyflush.c

49 lines
1.5 KiB
C

/* This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* This started out life as code shared between the nindy monitor and
GDB. For various reasons, this is no longer true. Eventually, it
probably should be merged into remote-nindy.c. */
#include <stdio.h>
#include "defs.h"
#include "serial.h"
/* Flush all pending input and output for SERIAL, wait for a second, and
then if there is a character pending, discard it and flush again. */
int
tty_flush (serial)
serial_t serial;
{
while (1)
{
SERIAL_FLUSH_INPUT (serial);
SERIAL_FLUSH_OUTPUT (serial);
sleep(1);
switch (SERIAL_READCHAR (serial, 0))
{
case SERIAL_TIMEOUT:
case SERIAL_ERROR:
case SERIAL_EOF:
return 0;
default:
/* We read something. Eeek. Try again. */
break;
}
}
}