/*- * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * Chris Torek. * * Redistribution and use in source and binary forms are permitted * provided that: (1) source distributions retain this entire copyright * notice and comment, and (2) distributions including binaries display * the following acknowledgement:  ``This product includes software * developed by the University of California, Berkeley and its contributors'' * in the documentation or other materials provided with the distribution * and in all advertising materials mentioning features or use of this * software. Neither the name of the University nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */#if defined(LIBC_SCCS) && !defined(lint)static char sccsid[] = "@(#)atexit.c	5.1 (Berkeley) 5/15/90";#endif /* LIBC_SCCS and not lint *//* #include <stddef.h> *//* #include <stdlib.h> */void	*malloc();#include "atexit.h"/* * Register a function to be performed at exit. */intatexit(fn)	void (*fn)();{	static struct atexit __atexit0;	/* one guaranteed table */	register struct atexit *p;	if ((p = __atexit) == 0)		__atexit = p = &__atexit0;	if (p->ind >= ATEXIT_SIZE) {		if ((p = malloc(sizeof(*p))) == 0)			return (-1);		__atexit->next = p;		__atexit = p;	}	p->fns[p->ind++] = fn;	return (0);}