exit.c revision 92889
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 92889 2002-03-21 18:49:23Z obrien $ 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{ 6492889Sobrien struct atexit *p; 6592889Sobrien 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