| 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 | |
| 25 | static void |
| 26 | gdb_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 | } |