| /* quit.h -- How to handle SIGINT gracefully. */ |
| |
| /* Copyright (C) 1993 Free Software Foundation, Inc. |
| |
| This file is part of GNU Bash, the Bourne Again SHell. |
| |
| Bash 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, or (at your option) any later |
| version. |
| |
| Bash 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 Bash; see the file COPYING. If not, write to the Free Software |
| Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
| |
| #if !defined (_QUIT_H_) |
| #define _QUIT_H_ |
| |
| /* Non-zero means SIGINT has already ocurred. */ |
| extern int interrupt_state; |
| |
| /* Macro to call a great deal. SIGINT just sets above variable. When |
| it is safe, put QUIT in the code, and the "interrupt" will take place. */ |
| #define QUIT if (interrupt_state) throw_to_top_level () |
| |
| #define SETINTERRUPT interrupt_state = 1 |
| #define CLRINTERRUPT interrupt_state = 0 |
| |
| #define ADDINTERRUPT interrupt_state++ |
| #define DELINTERRUPT interrupt_state-- |
| |
| #endif /* _QUIT_H_ */ |