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 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <signal.h> 31 #include <pthread.h> 32 #include <pthread_np.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 __weak_reference(_pthread_cond_init_stub, _pthread_cond_init); 44 __weak_reference(_pthread_cond_signal_stub, _pthread_cond_signal); 45 __weak_reference(_pthread_cond_wait_stub, _pthread_cond_wait); 46 __weak_reference(_pthread_getspecific_stub, _pthread_getspecific); 47 __weak_reference(_pthread_key_create_stub, _pthread_key_create); 48 __weak_reference(_pthread_key_delete_stub, _pthread_key_delete); 49 __weak_reference(_pthread_main_np_stub, _pthread_main_np); 50 __weak_reference(_pthread_mutex_destroy_stub, _pthread_mutex_destroy); 51 __weak_reference(_pthread_mutex_init_stub, _pthread_mutex_init); 52 __weak_reference(_pthread_mutex_lock_stub, _pthread_mutex_lock); 53 __weak_reference(_pthread_mutex_trylock_stub, _pthread_mutex_trylock); 54 __weak_reference(_pthread_mutex_unlock_stub, _pthread_mutex_unlock); 55 __weak_reference(_pthread_mutexattr_init_stub, _pthread_mutexattr_init); 56 __weak_reference(_pthread_mutexattr_destroy_stub, _pthread_mutexattr_destroy); 57 __weak_reference(_pthread_mutexattr_settype_stub, _pthread_mutexattr_settype); 58 __weak_reference(_pthread_once_stub, _pthread_once); 59 __weak_reference(_pthread_self_stub, _pthread_self); 60 __weak_reference(_pthread_rwlock_init_stub, _pthread_rwlock_init); 61 __weak_reference(_pthread_rwlock_rdlock_stub, _pthread_rwlock_rdlock); 62 __weak_reference(_pthread_rwlock_tryrdlock_stub, _pthread_rwlock_tryrdlock); 63 __weak_reference(_pthread_rwlock_trywrlock_stub, _pthread_rwlock_trywrloc); 64 __weak_reference(_pthread_rwlock_unlock_stub, _pthread_rwlock_unlock); 65 __weak_reference(_pthread_rwlock_wrlock_stub, _pthread_rwlock_wrlock); 66 __weak_reference(_pthread_setspecific_stub, _pthread_setspecific); 67 __weak_reference(_pthread_sigmask_stub, _pthread_sigmask); 68 69 /* Define a null pthread structure just to satisfy _pthread_self. */ 70 struct pthread { 71 }; 72 73 static struct pthread main_thread; 74 75 int 76 _pthread_cond_init_stub(pthread_cond_t *cond, 77 const pthread_condattr_t *cond_attr) 78 { 79 return (0); 80 } 81 82 int 83 _pthread_cond_signal_stub(pthread_cond_t *cond) 84 { 85 return (0); 86 } 87 88 int 89 _pthread_cond_wait_stub(pthread_cond_t *cond, pthread_mutex_t *mutex) 90 { 91 return (0); 92 } 93 94 void * 95 _pthread_getspecific_stub(pthread_key_t key) 96 { 97 return (NULL); 98 } 99 100 int 101 _pthread_key_create_stub(pthread_key_t *key, void (*destructor) (void *)) 102 { 103 return (0); 104 } 105 106 int 107 _pthread_key_delete_stub(pthread_key_t key) 108 { 109 return (0); 110 } 111 112 int 113 _pthread_main_np_stub() 114 { 115 return (-1); 116 } 117 118 int 119 _pthread_mutex_destroy_stub(pthread_mutex_t *mattr) 120 { 121 return (0); 122 } 123 124 int 125 _pthread_mutex_init_stub(pthread_mutex_t *mutex, const pthread_mutexattr_t *mattr) 126 { 127 return (0); 128 } 129 130 int 131 _pthread_mutex_lock_stub(pthread_mutex_t *mutex) 132 { 133 return (0); 134 } 135 136 int 137 _pthread_mutex_trylock_stub(pthread_mutex_t *mutex) 138 { 139 return (0); 140 } 141 142 int 143 _pthread_mutex_unlock_stub(pthread_mutex_t *mutex) 144 { 145 return (0); 146 } 147 148 int 149 _pthread_mutexattr_init_stub(pthread_mutexattr_t *mattr) 150 { 151 return (0); 152 } 153 154 int 155 _pthread_mutexattr_destroy_stub(pthread_mutexattr_t *mattr) 156 { 157 return (0); 158 } 159 160 int 161 _pthread_mutexattr_settype_stub(pthread_mutexattr_t *mattr, int type) 162 { 163 return (0); 164 } 165 166 int 167 _pthread_once_stub(pthread_once_t *once_control, void (*init_routine) (void)) 168 { 169 return (0); 170 } 171 172 int 173 _pthread_rwlock_init_stub(pthread_rwlock_t *rwlock, 174 const pthread_rwlockattr_t *attr) 175 { 176 return (0); 177 } 178 179 int 180 _pthread_rwlock_destroy_stub(pthread_rwlock_t *rwlock) 181 { 182 return (0); 183 } 184 185 int 186 _pthread_rwlock_rdlock_stub(pthread_rwlock_t *rwlock) 187 { 188 return (0); 189 } 190 191 int 192 _pthread_rwlock_tryrdlock_stub(pthread_rwlock_t *rwlock) 193 { 194 return (0); 195 } 196 197 int 198 _pthread_rwlock_trywrlock_stub(pthread_rwlock_t *rwlock) 199 { 200 return (0); 201 } 202 203 int 204 _pthread_rwlock_unlock_stub(pthread_rwlock_t *rwlock) 205 { 206 return (0); 207 } 208 209 int 210 _pthread_rwlock_wrlock_stub(pthread_rwlock_t *rwlock) 211 { 212 return (0); 213 } 214 215 pthread_t 216 _pthread_self_stub(void) 217 { 218 return (&main_thread); 219 } 220 221 int 222 _pthread_setspecific_stub(pthread_key_t key, const void *value) 223 { 224 return (0); 225 } 226 227 int 228 _pthread_sigmask_stub(int how, const sigset_t *set, sigset_t *oset) 229 { 230 return (0); 231 } 232