stdlib/exit.h

   1 /* Copyright (C) 1991, 1996, 1997 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Library General Public License as
   6    published by the Free Software Foundation; either version 2 of the
   7    License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 #ifndef _EXIT_H
  20 #define _EXIT_H 1
  21
  22 struct exit_function
  23   {
  24     enum { ef_free, ef_us, ef_on, ef_at } flavor; /* `ef_free' MUST be zero! */
  25     union
  26       {
  27         void (*at) (void);
  28         struct
  29           {
  30             void (*fn) (int status, void *arg);
  31             void *arg;
  32           } on;
  33       } func;
  34   };
  35 struct exit_function_list
  36   {
  37     struct exit_function_list *next;
  38     size_t idx;
  39     struct exit_function fns[32];
  40   };
  41 extern struct exit_function_list *__exit_funcs;
  42
  43 extern struct exit_function *__new_exitfn (void);
  44
  45 #endif  /* exit.h  */