1/* unwind_prot.h - Macros and functions for hacking unwind protection. */
2
3/* Copyright (C) 1993 Free Software Foundation, Inc.
4
5   This file is part of GNU Bash, the Bourne Again SHell.
6
7   Bash is free software; you can redistribute it and/or modify it under
8   the terms of the GNU General Public License as published by the Free
9   Software Foundation; either version 2, or (at your option) any later
10   version.
11
12   Bash is distributed in the hope that it will be useful, but WITHOUT ANY
13   WARRANTY; without even the implied warranty of MERCHANTABILITY or
14   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
15   for more details.
16
17   You should have received a copy of the GNU General Public License along
18   with Bash; see the file COPYING.  If not, write to the Free Software
19   Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
20
21#if !defined (_UNWIND_PROT_H)
22#define _UNWIND_PROT_H
23
24/* Run a function without interrupts. */
25extern void begin_unwind_frame __P((char *));
26extern void discard_unwind_frame __P((char *));
27extern void run_unwind_frame __P((char *));
28extern void add_unwind_protect (); /* Not portable to arbitrary C99 hosts.  */
29extern void remove_unwind_protect __P((void));
30extern void run_unwind_protects __P((void));
31extern void clear_unwind_protect_list __P((int));
32extern void uwp_init __P((void));
33
34/* Define for people who like their code to look a certain way. */
35#define end_unwind_frame()
36
37/* How to protect a variable.  */
38#define unwind_protect_var(X) unwind_protect_mem ((char *)&(X), sizeof (X))
39extern void unwind_protect_mem __P((char *, int));
40
41/* Backwards compatibility */
42#define unwind_protect_int	unwind_protect_var
43#define unwind_protect_short	unwind_protect_var
44#define unwind_protect_string	unwind_protect_var
45#define unwind_protect_pointer	unwind_protect_var
46#define unwind_protect_jmp_buf	unwind_protect_var
47
48#endif /* _UNWIND_PROT_H */
49