006829dfcbe4718ef52429cb985af6def43929c2
[dragonfly.git] / lib / libc / gen / _pthread_stubs.c
1 /*
2  * Copyright (c) 2001 Daniel Eischen <deischen@FreeBSD.org>.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY DANIEL EISCHEN AND CONTRIBUTORS ``AS IS''
15  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * $FreeBSD: src/lib/libc/gen/_pthread_stubs.c,v 1.5 2001/06/11 23:18:22 iedowse Exp $
27  * $DragonFly: src/lib/libc/gen/_pthread_stubs.c,v 1.4 2005/05/09 12:43:40 davidxu Exp $
28  */
29
30 #include <sys/cdefs.h>
31 #include <stdlib.h>
32 #include <pthread.h>
33
34 /*
35  * Weak symbols: All libc internal usage of these functions should
36  * use the weak symbol versions (_pthread_XXX).  If libpthread is
37  * linked, it will override these functions with (non-weak) routines.
38  * The _pthread_XXX functions are provided solely for internal libc
39  * usage to avoid unwanted cancellation points and to differentiate
40  * between application locks and libc locks (threads holding the
41  * latter can't be allowed to exit/terminate).
42  */
43
44 #define WR(f, n)                        \
45     __weak_reference(f, _ ## n);        \
46     __weak_reference(f, n)
47
48
49 WR(stub_zero, pthread_atfork);
50 WR(stub_zero, pthread_attr_destroy);
51 WR(stub_zero, pthread_attr_get_np);
52 WR(stub_zero, pthread_attr_getdetachstate);
53 WR(stub_zero, pthread_attr_getguardsize);
54 WR(stub_zero, pthread_attr_getinheritsched);
55 WR(stub_zero, pthread_attr_getschedparam);
56 WR(stub_zero, pthread_attr_getschedpolicy);
57 WR(stub_zero, pthread_attr_getscope);
58 WR(stub_zero, pthread_attr_getstack);
59 WR(stub_zero, pthread_attr_getstackaddr);
60 WR(stub_zero, pthread_attr_getstacksize);
61 WR(stub_zero, pthread_attr_init);
62 WR(stub_zero, pthread_attr_setcreatesuspend_np);
63 WR(stub_zero, pthread_attr_setdetachstate);
64 WR(stub_zero, pthread_attr_setguardsize);
65 WR(stub_zero, pthread_attr_setinheritsched);
66 WR(stub_zero, pthread_attr_setschedparam);
67 WR(stub_zero, pthread_attr_setschedpolicy);
68 WR(stub_zero, pthread_attr_setscope);
69 WR(stub_zero, pthread_attr_setstack);
70 WR(stub_zero, pthread_attr_setstackaddr);
71 WR(stub_zero, pthread_attr_setstacksize);
72 WR(stub_zero, pthread_barrier_destroy);
73 WR(stub_zero, pthread_barrier_init);
74 WR(stub_zero, pthread_barrier_wait);
75 WR(stub_zero, pthread_barrierattr_destroy);
76 WR(stub_zero, pthread_barrierattr_getpshared);
77 WR(stub_zero, pthread_barrierattr_init);
78 WR(stub_zero, pthread_barrierattr_setpshared);
79 WR(stub_zero, pthread_cancel);
80 WR(stub_zero, pthread_cleanup_pop);
81 WR(stub_zero, pthread_cleanup_push);
82 WR(stub_zero, pthread_cond_broadcast);
83 WR(stub_zero, pthread_cond_destroy);
84 WR(stub_zero, pthread_cond_init);
85 WR(stub_zero, pthread_cond_signal);
86 WR(stub_zero, pthread_cond_timedwait);
87 WR(stub_zero, pthread_cond_wait);
88 WR(stub_zero, pthread_condattr_destroy);
89 WR(stub_zero, pthread_condattr_getclock);
90 WR(stub_zero, pthread_condattr_getpshared);
91 WR(stub_zero, pthread_condattr_init);
92 WR(stub_zero, pthread_condattr_setclock);
93 WR(stub_zero, pthread_condattr_setpshared);
94 WR(stub_zero, pthread_detach);
95 WR(stub_true, pthread_equal);
96 WR(stub_exit, pthread_exit);
97 WR(stub_zero, pthread_getconcurrency);
98 WR(stub_zero, pthread_getprio);
99 WR(stub_zero, pthread_getschedparam);
100 WR(stub_null, pthread_getspecific);
101 WR(stub_zero, pthread_join);
102 WR(stub_zero, pthread_key_create);
103 WR(stub_zero, pthread_key_delete);
104 WR(stub_zero, pthread_kill);
105 WR(stub_main, pthread_main_np);
106 WR(stub_zero, pthread_multi_np);
107 WR(stub_zero, pthread_mutex_destroy);
108 WR(stub_zero, pthread_mutex_getprioceiling);
109 WR(stub_zero, pthread_mutex_init);
110 WR(stub_zero, pthread_mutex_lock);
111 WR(stub_zero, pthread_mutex_setprioceiling);
112 WR(stub_zero, pthread_mutex_timedlock);
113 WR(stub_zero, pthread_mutex_trylock);
114 WR(stub_zero, pthread_mutex_unlock);
115 WR(stub_zero, pthread_mutexattr_destroy);
116 WR(stub_zero, pthread_mutexattr_getkind_np);
117 WR(stub_zero, pthread_mutexattr_getprioceiling);
118 WR(stub_zero, pthread_mutexattr_getprotocol);
119 WR(stub_zero, pthread_mutexattr_getpshared);
120 WR(stub_zero, pthread_mutexattr_gettype);
121 WR(stub_zero, pthread_mutexattr_init);
122 WR(stub_zero, pthread_mutexattr_setkind_np);
123 WR(stub_zero, pthread_mutexattr_setprioceiling);
124 WR(stub_zero, pthread_mutexattr_setprotocol);
125 WR(stub_zero, pthread_mutexattr_setpshared);
126 WR(stub_zero, pthread_mutexattr_settype);
127 WR(stub_once, pthread_once);
128 WR(stub_zero, pthread_resume_all_np);
129 WR(stub_zero, pthread_resume_np);
130 WR(stub_zero, pthread_rwlock_destroy);
131 WR(stub_zero, pthread_rwlock_init);
132 WR(stub_zero, pthread_rwlock_rdlock);
133 WR(stub_zero, pthread_rwlock_timedrdlock);
134 WR(stub_zero, pthread_rwlock_timedwrlock);
135 WR(stub_zero, pthread_rwlock_tryrdlock);
136 WR(stub_zero, pthread_rwlock_trywrlock);
137 WR(stub_zero, pthread_rwlock_unlock);
138 WR(stub_zero, pthread_rwlock_wrlock);
139 WR(stub_zero, pthread_rwlockattr_destroy);
140 WR(stub_zero, pthread_rwlockattr_getpshared);
141 WR(stub_zero, pthread_rwlockattr_init);
142 WR(stub_zero, pthread_rwlockattr_setpshared);
143 WR(stub_self, pthread_self);
144 WR(stub_zero, pthread_set_name_np);
145 WR(stub_zero, pthread_setcancelstate);
146 WR(stub_zero, pthread_setcanceltype);
147 WR(stub_zero, pthread_setconcurrency);
148 WR(stub_zero, pthread_setprio);
149 WR(stub_zero, pthread_setschedparam);
150 WR(stub_zero, pthread_setspecific);
151 WR(stub_zero, pthread_sigmask);
152 WR(stub_zero, pthread_single_np);
153 WR(stub_zero, pthread_spin_destroy);
154 WR(stub_zero, pthread_spin_init);
155 WR(stub_zero, pthread_spin_lock);
156 WR(stub_zero, pthread_spin_trylock);
157 WR(stub_zero, pthread_spin_unlock);
158 WR(stub_zero, pthread_suspend_all_np);
159 WR(stub_zero, pthread_suspend_np);
160 WR(stub_zero, pthread_switch_add_np);
161 WR(stub_zero, pthread_switch_delete_np);
162 WR(stub_zero, pthread_testcancel);
163 WR(stub_zero, pthread_timedjoin_np);
164 WR(stub_zero, pthread_yield);
165 WR(stub_zero, sched_yield);
166 WR(stub_zero, sem_close);
167 WR(stub_zero, sem_destroy);
168 WR(stub_zero, sem_getvalue);
169 WR(stub_zero, sem_init);
170 WR(stub_zero, sem_open);
171 WR(stub_zero, sem_post);
172 WR(stub_zero, sem_trywait);
173 WR(stub_zero, sem_unlink);
174 WR(stub_zero, sem_wait);
175
176
177 static int __used
178 stub_zero(void)
179 {
180         return (0);
181 }
182
183 static int __used
184 stub_once(pthread_once_t *o, void (*r)(void))
185 {
186         if (o->state != PTHREAD_DONE_INIT) {
187                 (*r)();
188                 o->state = PTHREAD_DONE_INIT;
189         }
190
191         return (0);
192 }
193
194 static void * __used
195 stub_null(void)
196 {
197         return (NULL);
198 }
199
200 static void * __used
201 stub_self(void)
202 {
203         static struct {} main_thread;
204
205         return (&main_thread);
206 }
207
208 static int __used
209 stub_main(void)
210 {
211         return (-1);
212 }
213
214 static int __used
215 stub_true(void)
216 {
217         return (1);
218 }
219
220 static void __used
221 stub_exit(void)
222 {
223         exit(0);
224 }