1*57718be8SEnji Cooper /*-
2*57718be8SEnji Cooper * Copyright (c) 2011 The NetBSD Foundation, Inc.
3*57718be8SEnji Cooper * All rights reserved.
4*57718be8SEnji Cooper *
5*57718be8SEnji Cooper * This code is derived from software contributed to The NetBSD Foundation
6*57718be8SEnji Cooper * by Joerg Sonnenberger.
7*57718be8SEnji Cooper *
8*57718be8SEnji Cooper * Redistribution and use in source and binary forms, with or without
9*57718be8SEnji Cooper * modification, are permitted provided that the following conditions
10*57718be8SEnji Cooper * are met:
11*57718be8SEnji Cooper * 1. Redistributions of source code must retain the above copyright
12*57718be8SEnji Cooper * notice, this list of conditions and the following disclaimer.
13*57718be8SEnji Cooper * 2. Redistributions in binary form must reproduce the above copyright
14*57718be8SEnji Cooper * notice, this list of conditions and the following disclaimer in the
15*57718be8SEnji Cooper * documentation and/or other materials provided with the distribution.
16*57718be8SEnji Cooper *
17*57718be8SEnji Cooper * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
18*57718be8SEnji Cooper * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19*57718be8SEnji Cooper * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20*57718be8SEnji Cooper * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
21*57718be8SEnji Cooper * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22*57718be8SEnji Cooper * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23*57718be8SEnji Cooper * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24*57718be8SEnji Cooper * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25*57718be8SEnji Cooper * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26*57718be8SEnji Cooper * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27*57718be8SEnji Cooper * POSSIBILITY OF SUCH DAMAGE.
28*57718be8SEnji Cooper */
29*57718be8SEnji Cooper
30*57718be8SEnji Cooper #include <poll.h>
31*57718be8SEnji Cooper #include <stddef.h>
32*57718be8SEnji Cooper #include <sys/tls.h>
33*57718be8SEnji Cooper
34*57718be8SEnji Cooper #ifdef __HAVE_NO___THREAD
35*57718be8SEnji Cooper #define __thread
36*57718be8SEnji Cooper #endif
37*57718be8SEnji Cooper
38*57718be8SEnji Cooper extern int sleep_init;
39*57718be8SEnji Cooper extern int sleep_fini;
40*57718be8SEnji Cooper extern int dlopen_cookie;
41*57718be8SEnji Cooper
42*57718be8SEnji Cooper static void __attribute__((__constructor__))
init1(void)43*57718be8SEnji Cooper init1(void)
44*57718be8SEnji Cooper {
45*57718be8SEnji Cooper dlopen_cookie = 1;
46*57718be8SEnji Cooper if (!sleep_init)
47*57718be8SEnji Cooper return;
48*57718be8SEnji Cooper for (;;)
49*57718be8SEnji Cooper poll(NULL, 0, -1);
50*57718be8SEnji Cooper }
51*57718be8SEnji Cooper
52*57718be8SEnji Cooper extern int dlclose_cookie;
53*57718be8SEnji Cooper
54*57718be8SEnji Cooper static void __attribute__((__destructor__))
fini1(void)55*57718be8SEnji Cooper fini1(void)
56*57718be8SEnji Cooper {
57*57718be8SEnji Cooper dlclose_cookie = 1;
58*57718be8SEnji Cooper if (!sleep_fini)
59*57718be8SEnji Cooper return;
60*57718be8SEnji Cooper for (;;)
61*57718be8SEnji Cooper poll(NULL, 0, -1);
62*57718be8SEnji Cooper }
63*57718be8SEnji Cooper
64*57718be8SEnji Cooper static __thread int tls_callback_var;
65*57718be8SEnji Cooper
66*57718be8SEnji Cooper static void __attribute__((__used__))
tls_callback(void)67*57718be8SEnji Cooper tls_callback(void)
68*57718be8SEnji Cooper {
69*57718be8SEnji Cooper tls_callback_var = 1;
70*57718be8SEnji Cooper }
71