1 /*-
2 * Copyright (c) 2011 The NetBSD Foundation, Inc.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to The NetBSD Foundation
6 * by Joerg Sonnenberger.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include <poll.h>
31 #include <stddef.h>
32 #include <sys/tls.h>
33
34 #ifdef __HAVE_NO___THREAD
35 #define __thread
36 #endif
37
38 extern int sleep_init;
39 extern int sleep_fini;
40 extern int dlopen_cookie;
41
42 static void __attribute__((__constructor__))
init1(void)43 init1(void)
44 {
45 dlopen_cookie = 1;
46 if (!sleep_init)
47 return;
48 for (;;)
49 poll(NULL, 0, -1);
50 }
51
52 extern int dlclose_cookie;
53
54 static void __attribute__((__destructor__))
fini1(void)55 fini1(void)
56 {
57 dlclose_cookie = 1;
58 if (!sleep_fini)
59 return;
60 for (;;)
61 poll(NULL, 0, -1);
62 }
63
64 static __thread int tls_callback_var;
65
66 static void __attribute__((__used__))
tls_callback(void)67 tls_callback(void)
68 {
69 tls_callback_var = 1;
70 }
71