1 /*	$OpenBSD: exit.c,v 1.12 2007/09/03 14:40:16 millert Exp $ */
2 /*-
3  * Copyright (c) 1990 The Regents of the University of California.
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. Neither the name of the University nor the names of its contributors
15  *    may be used to endorse or promote products derived from this software
16  *    without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28  * SUCH DAMAGE.
29  */
30 
31 #include <sys/types.h>
32 #include <sys/mman.h>
33 #include <stdlib.h>
34 #include <unistd.h>
35 
36 /*
37  * This variable is zero until a process has created a thread.
38  * It is used to avoid calling locking functions in libc when they
39  * are not required. By default, libc is intended to be(come)
40  * thread-safe, but without a (significant) penalty to non-threaded
41  * processes.
42  */
43 int     __isthreaded    = 0;
44 
45 /* BEGIN android-added: using __cxa_finalize and __cxa_thread_finalize */
46 extern void __cxa_finalize(void* dso_handle);
47 extern void __cxa_thread_finalize();
48 /* END android-added */
49 
50 /*
51  * Exit, flushing stdio buffers if necessary.
52  */
53 void
exit(int status)54 exit(int status)
55 {
56   /* BEGIN android-added: call thread_local d-tors */
57   __cxa_thread_finalize();
58   /* END android-added */
59 
60 	/*
61 	 * Call functions registered by atexit() or _cxa_atexit()
62 	 * (including the stdio cleanup routine) and then _exit().
63 	 */
64 	__cxa_finalize(NULL);
65 	_exit(status);
66 }
67