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