1/* Copyright (C) 2008-2020 Free Software Foundation, Inc.
2
3   This file is part of GDB.
4
5   This program is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by
7   the Free Software Foundation; either version 3 of the License, or
8   (at your option) any later version.
9
10   This program is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   GNU General Public License for more details.
14
15   You should have received a copy of the GNU General Public License
16   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
17
18/* Force output to unbuffered mode if not connected to a terminal.  */
19
20#include <stdio.h>
21#ifndef __MINGW32__
22#include <unistd.h>
23#endif
24
25static void
26gdb_unbuffer_output (void)
27{
28  /* Always force this for Windows testing.  To a native Windows
29     program running under a Cygwin shell/ssh, stdin is really a
30     Windows pipe, thus not a tty and its outputs ends up fully
31     buffered.  */
32#ifndef __MINGW32__
33  if (!isatty (fileno (stdin)))
34#endif
35    {
36      setvbuf (stdout, NULL, _IONBF, BUFSIZ);
37      setvbuf (stderr, NULL, _IONBF, BUFSIZ);
38    }
39}
40