unwind_prot.h

   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. */
  25 extern void begin_unwind_frame __P((char *));
  26 extern void discard_unwind_frame __P((char *));
  27 extern void run_unwind_frame __P((char *));
  28 extern void add_unwind_protect (); /* Not portable to arbitrary C99 hosts.  */
  29 extern void remove_unwind_protect __P((void));
  30 extern void run_unwind_protects __P((void));
  31 extern void clear_unwind_protect_list __P((int));
  32 extern 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))
  39 extern 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 */