stdlib/on_exit.c

   1 /* Copyright (C) 1991 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
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include <ansidecl.h>
  20 #include <stdlib.h>
  21 #include "exit.h"
  22
  23 /* Register a function to be called by exit.  */
  24 int
  25 DEFUN(on_exit, (func, arg),
  26       void EXFUN((*func), (int status, PTR arg)) AND PTR arg)
  27 {
  28   struct exit_function *new = __new_exitfn();
  29
  30   if (new == NULL)
  31     return -1;
  32
  33   new->flavor = ef_on;
  34   new->func.on.fn = func;
  35   new->func.on.arg = arg;
  36   return 0;
  37 }