exit.c revision 71579
11573Srgrimes/*-
21573Srgrimes * Copyright (c) 1990, 1993
31573Srgrimes *	The Regents of the University of California.  All rights reserved.
41573Srgrimes *
51573Srgrimes * Redistribution and use in source and binary forms, with or without
61573Srgrimes * modification, are permitted provided that the following conditions
71573Srgrimes * are met:
81573Srgrimes * 1. Redistributions of source code must retain the above copyright
91573Srgrimes *    notice, this list of conditions and the following disclaimer.
101573Srgrimes * 2. Redistributions in binary form must reproduce the above copyright
111573Srgrimes *    notice, this list of conditions and the following disclaimer in the
121573Srgrimes *    documentation and/or other materials provided with the distribution.
131573Srgrimes * 3. All advertising materials mentioning features or use of this software
141573Srgrimes *    must display the following acknowledgement:
151573Srgrimes *	This product includes software developed by the University of
161573Srgrimes *	California, Berkeley and its contributors.
171573Srgrimes * 4. Neither the name of the University nor the names of its contributors
181573Srgrimes *    may be used to endorse or promote products derived from this software
191573Srgrimes *    without specific prior written permission.
201573Srgrimes *
211573Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
221573Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
231573Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
241573Srgrimes * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
251573Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
261573Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
271573Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
281573Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
291573Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
301573Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
311573Srgrimes * SUCH DAMAGE.
3271579Sdeischen *
3371579Sdeischen * $FreeBSD: head/lib/libc/stdlib/exit.c 71579 2001-01-24 13:01:12Z deischen $
341573Srgrimes */
351573Srgrimes
361573Srgrimes#if defined(LIBC_SCCS) && !defined(lint)
371573Srgrimesstatic char sccsid[] = "@(#)exit.c	8.1 (Berkeley) 6/4/93";
381573Srgrimes#endif /* LIBC_SCCS and not lint */
391573Srgrimes
4071579Sdeischen#include "namespace.h"
411573Srgrimes#include <stdlib.h>
421573Srgrimes#include <unistd.h>
4371579Sdeischen#include "un-namespace.h"
441573Srgrimes#include "atexit.h"
451573Srgrimes
461573Srgrimesvoid (*__cleanup)();
471573Srgrimes
481573Srgrimes/*
4935125Sjb * This variable is zero until a process has created a thread.
5035125Sjb * It is used to avoid calling locking functions in libc when they
5135125Sjb * are not required. By default, libc is intended to be(come)
5235125Sjb * thread-safe, but without a (significant) penalty to non-threaded
5335125Sjb * processes.
5435125Sjb */
5535125Sjbint	__isthreaded	= 0;
5635125Sjb
5735125Sjb/*
581573Srgrimes * Exit, flushing stdio buffers if necessary.
591573Srgrimes */
601573Srgrimesvoid
611573Srgrimesexit(status)
621573Srgrimes	int status;
631573Srgrimes{
641573Srgrimes	register struct atexit *p;
651573Srgrimes	register int n;
661573Srgrimes
6771579Sdeischen	/* Ensure that the auto-initialization routine is linked in: */
6835502Sjb	extern int _thread_autoinit_dummy_decl;
6971579Sdeischen
7035502Sjb	_thread_autoinit_dummy_decl = 1;
7135502Sjb
721573Srgrimes	for (p = __atexit; p; p = p->next)
731573Srgrimes		for (n = p->ind; --n >= 0;)
741573Srgrimes			(*p->fns[n])();
751573Srgrimes	if (__cleanup)
761573Srgrimes		(*__cleanup)();
771573Srgrimes	_exit(status);
781573Srgrimes}
79