| 1 | /* quit.h -- How to handle SIGINT gracefully. */
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| 2 |
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| 3 | /* Copyright (C) 1993 Free Software Foundation, Inc.
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| 4 |
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| 5 | This file is part of GNU Bash, the Bourne Again SHell.
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| 6 |
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| 7 | Bash is free software; you can redistribute it and/or modify it under
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| 8 | the terms of the GNU General Public License as published by the Free
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| 9 | Software Foundation; either version 2, or (at your option) any later
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| 10 | version.
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| 11 |
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| 12 | Bash is distributed in the hope that it will be useful, but WITHOUT ANY
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| 13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or
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| 14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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| 15 | for more details.
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| 16 |
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| 17 | You should have received a copy of the GNU General Public License along
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| 18 | with Bash; see the file COPYING. If not, write to the Free Software
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| 19 | Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
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| 20 |
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| 21 | #if !defined (_QUIT_H_)
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| 22 | #define _QUIT_H_
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| 23 |
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| 24 | /* Non-zero means SIGINT has already ocurred. */
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| 25 | extern int interrupt_state;
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| 26 |
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| 27 | /* Macro to call a great deal. SIGINT just sets above variable. When
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| 28 | it is safe, put QUIT in the code, and the "interrupt" will take place. */
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| 29 | #define QUIT if (interrupt_state) throw_to_top_level ()
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| 30 |
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| 31 | #define SETINTERRUPT interrupt_state = 1
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| 32 | #define CLRINTERRUPT interrupt_state = 0
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| 33 |
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| 34 | #define ADDINTERRUPT interrupt_state++
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| 35 | #define DELINTERRUPT interrupt_state--
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| 36 |
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| 37 | #endif /* _QUIT_H_ */
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