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 <signal.h> 31 #include <pthread.h> 32 #include <pthread_np.h> 33 34 int _pthread_cond_init_stub(pthread_cond_t *, const pthread_condattr_t *); 35 int _pthread_cond_signal_stub(pthread_cond_t *); 36 int _pthread_cond_wait_stub(pthread_cond_t *, pthread_mutex_t *); 37 void *_pthread_getspecific_stub(pthread_key_t); 38 int _pthread_key_create_stub(pthread_key_t *, void (*)(void *)); 39 int _pthread_key_delete_stub(pthread_key_t); 40 int _pthread_main_np_stub(void); 41 int _pthread_mutex_destroy_stub(pthread_mutex_t *); 42 int _pthread_mutex_init_stub(pthread_mutex_t *, 43 const pthread_mutexattr_t *); 44 int _pthread_mutex_lock_stub(pthread_mutex_t *); 45 int _pthread_mutex_trylock_stub(pthread_mutex_t *); 46 int _pthread_mutex_unlock_stub(pthread_mutex_t *); 47 int _pthread_mutexattr_init_stub(pthread_mutexattr_t *); 48 int _pthread_mutexattr_destroy_stub(pthread_mutexattr_t *); 49 int _pthread_mutexattr_settype_stub(pthread_mutexattr_t *, int); 50 int _pthread_once_stub(pthread_once_t *, void (*)(void)); 51 int _pthread_rwlock_init_stub(pthread_rwlock_t *, 52 const pthread_rwlockattr_t *); 53 int _pthread_rwlock_destroy_stub(pthread_rwlock_t *); 54 int _pthread_rwlock_rdlock_stub(pthread_rwlock_t *); 55 int _pthread_rwlock_tryrdlock_stub(pthread_rwlock_t *); 56 int _pthread_rwlock_trywrlock_stub(pthread_rwlock_t *); 57 int _pthread_rwlock_unlock_stub(pthread_rwlock_t *); 58 int _pthread_rwlock_wrlock_stub(pthread_rwlock_t *); 59 int _pthread_setspecific_stub(pthread_key_t, const void *); 60 int _pthread_sigmask_stub(int, const sigset_t *, sigset_t *); 61 62 /* define a null pthread structure just to satisfy _pthread_self */ 63 struct pthread { 64 }; 65 66 static struct pthread main_thread; 67 68 /* 69 * Weak symbols: All libc internal usage of these functions should 70 * use the weak symbol versions (_pthread_XXX). If libpthread is 71 * linked, it will override these functions with (non-weak) routines. 72 * The _pthread_XXX functions are provided solely for internal libc 73 * usage to avoid unwanted cancellation points and to differentiate 74 * between application locks and libc locks (threads holding the 75 * latter can't be allowed to exit/terminate). 76 */ 77 __weak_reference(_pthread_cond_init_stub, _pthread_cond_init); 78 __weak_reference(_pthread_cond_signal_stub, _pthread_cond_signal); 79 __weak_reference(_pthread_cond_wait_stub, _pthread_cond_wait); 80 __weak_reference(_pthread_getspecific_stub, _pthread_getspecific); 81 __weak_reference(_pthread_key_create_stub, _pthread_key_create); 82 __weak_reference(_pthread_key_delete_stub, _pthread_key_delete); 83 __weak_reference(_pthread_main_np_stub, _pthread_main_np); 84 __weak_reference(_pthread_mutex_destroy_stub, _pthread_mutex_destroy); 85 __weak_reference(_pthread_mutex_init_stub, _pthread_mutex_init); 86 __weak_reference(_pthread_mutex_lock_stub, _pthread_mutex_lock); 87 __weak_reference(_pthread_mutex_trylock_stub, _pthread_mutex_trylock); 88 __weak_reference(_pthread_mutex_unlock_stub, _pthread_mutex_unlock); 89 __weak_reference(_pthread_mutexattr_init_stub, _pthread_mutexattr_init); 90 __weak_reference(_pthread_mutexattr_destroy_stub, _pthread_mutexattr_destroy); 91 __weak_reference(_pthread_mutexattr_settype_stub, _pthread_mutexattr_settype); 92 __weak_reference(_pthread_once_stub, _pthread_once); 93 __weak_reference(_pthread_self_stub, _pthread_self); 94 __weak_reference(_pthread_rwlock_init_stub, _pthread_rwlock_init); 95 __weak_reference(_pthread_rwlock_rdlock_stub, _pthread_rwlock_rdlock); 96 __weak_reference(_pthread_rwlock_tryrdlock_stub, _pthread_rwlock_tryrdlock); 97 __weak_reference(_pthread_rwlock_trywrlock_stub, _pthread_rwlock_trywrlock); 98 __weak_reference(_pthread_rwlock_unlock_stub, _pthread_rwlock_unlock); 99 __weak_reference(_pthread_rwlock_wrlock_stub, _pthread_rwlock_wrlock); 100 __weak_reference(_pthread_setspecific_stub, _pthread_setspecific); 101 __weak_reference(_pthread_sigmask_stub, _pthread_sigmask); 102 103 int 104 _pthread_cond_init_stub(pthread_cond_t *cond __unused, 105 const pthread_condattr_t *cond_attr __unused) 106 { 107 return (0); 108 } 109 110 int 111 _pthread_cond_signal_stub(pthread_cond_t *cond __unused) 112 { 113 return (0); 114 } 115 116 int 117 _pthread_cond_wait_stub(pthread_cond_t *cond __unused, 118 pthread_mutex_t *mutex __unused) 119 { 120 return (0); 121 } 122 123 void * 124 _pthread_getspecific_stub(pthread_key_t key __unused) 125 { 126 return (NULL); 127 } 128 129 int 130 _pthread_key_create_stub(pthread_key_t *key __unused, 131 void (*destructor) (void *) __unused) 132 { 133 return (0); 134 } 135 136 int 137 _pthread_key_delete_stub(pthread_key_t key __unused) 138 { 139 return (0); 140 } 141 142 int 143 _pthread_main_np_stub(void) 144 { 145 return (-1); 146 } 147 148 int 149 _pthread_mutex_destroy_stub(pthread_mutex_t *mattr __unused) 150 { 151 return (0); 152 } 153 154 int 155 _pthread_mutex_init_stub(pthread_mutex_t *mutex __unused, 156 const pthread_mutexattr_t *mattr __unused) 157 { 158 return (0); 159 } 160 161 int 162 _pthread_mutex_lock_stub(pthread_mutex_t *mutex __unused) 163 { 164 return (0); 165 } 166 167 int 168 _pthread_mutex_trylock_stub(pthread_mutex_t *mutex __unused) 169 { 170 return (0); 171 } 172 173 int 174 _pthread_mutex_unlock_stub(pthread_mutex_t *mutex __unused) 175 { 176 return (0); 177 } 178 179 int 180 _pthread_mutexattr_init_stub(pthread_mutexattr_t *mattr __unused) 181 { 182 return (0); 183 } 184 185 int 186 _pthread_mutexattr_destroy_stub(pthread_mutexattr_t *mattr __unused) 187 { 188 return (0); 189 } 190 191 int 192 _pthread_mutexattr_settype_stub(pthread_mutexattr_t *mattr __unused, 193 int type __unused) 194 { 195 return (0); 196 } 197 198 int 199 _pthread_once_stub(pthread_once_t *once_control __unused, 200 void (*init_routine) (void) __unused) 201 { 202 return (0); 203 } 204 205 int 206 _pthread_rwlock_init_stub(pthread_rwlock_t *rwlock __unused, 207 const pthread_rwlockattr_t *attr __unused) 208 { 209 return (0); 210 } 211 212 int 213 _pthread_rwlock_destroy_stub(pthread_rwlock_t *rwlock __unused) 214 { 215 return (0); 216 } 217 218 int 219 _pthread_rwlock_rdlock_stub(pthread_rwlock_t *rwlock __unused) 220 { 221 return (0); 222 } 223 224 int 225 _pthread_rwlock_tryrdlock_stub(pthread_rwlock_t *rwlock __unused) 226 { 227 return (0); 228 } 229 230 int 231 _pthread_rwlock_trywrlock_stub(pthread_rwlock_t *rwlock __unused) 232 { 233 return (0); 234 } 235 236 int 237 _pthread_rwlock_unlock_stub(pthread_rwlock_t *rwlock __unused) 238 { 239 return (0); 240 } 241 242 int 243 _pthread_rwlock_wrlock_stub(pthread_rwlock_t *rwlock __unused) 244 { 245 return (0); 246 } 247 248 pthread_t 249 _pthread_self_stub(void) 250 { 251 return (&main_thread); 252 } 253 int 254 _pthread_setspecific_stub(pthread_key_t key __unused, 255 const void *value __unused) 256 { 257 return (0); 258 } 259 260 int 261 _pthread_sigmask_stub(int how __unused, const sigset_t *set __unused, 262 sigset_t *oset __unused) 263 { 264 return (0); 265 } 266