lib/ansi/exit.c

   1 /*
   2  * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
   3  * See the copyright notice in the ACK home directory, in the file "Copyright".
   4  */
   5 /* $Header$ */
   6
   7 #include        <stdio.h>
   8 #include        <stdlib.h>
   9
  10 #define NEXITS  32
  11
  12 void (*__functab[NEXITS])(void);
  13 int __funccnt = 0;
  14
  15 extern void _exit(int);
  16
  17 /* only flush output buffers when necessary */
  18 int (*_clean)(void) = NULL;
  19
  20 static void
  21 _calls(void)
  22 {
  23         register int i = __funccnt;
  24
  25         /* "Called in reversed order of their registration" */
  26         while (--i >= 0)
  27                 (*__functab[i])();
  28 }
  29
  30 void
  31 exit(int status)
  32 {
  33         _calls();
  34         if (_clean) _clean();
  35         _exit(status) ;
  36 }