2 * Copyright (c) 2001 Daniel Eischen <deischen@FreeBSD.org>.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
34 #include "libc_private.h"
37 * Weak symbols: All libc internal usage of these functions should
38 * use the weak symbol versions (_pthread_XXX). If libpthread is
39 * linked, it will override these functions with (non-weak) routines.
40 * The _pthread_XXX functions are provided solely for internal libc
41 * usage to avoid unwanted cancellation points and to differentiate
42 * between application locks and libc locks (threads holding the
43 * latter can't be allowed to exit/terminate).
46 /* Define a null pthread structure just to satisfy _pthread_self. */
50 static struct pthread main_thread;
52 static int stub_main(void);
53 static void *stub_null(void);
54 static struct pthread *stub_self(void);
55 static int stub_zero(void);
56 static int stub_true(void);
57 static void stub_exit(void);
59 #define PJT_DUAL_ENTRY(entry) \
60 (pthread_func_t)entry, (pthread_func_t)entry
62 pthread_func_entry_t __thr_jtable[PJT_MAX] = {
63 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATFORK */
64 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_DESTROY */
65 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_GETDETACHSTATE */
66 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_GETGUARDSIZE */
67 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_GETINHERITSCHED */
68 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_GETSCHEDPARAM */
69 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_GETSCHEDPOLICY */
70 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_GETSCOPE */
71 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_GETSTACKADDR */
72 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_GETSTACKSIZE */
73 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_INIT */
74 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_SETDETACHSTATE */
75 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_SETGUARDSIZE */
76 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_SETINHERITSCHED */
77 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_SETSCHEDPARAM */
78 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_SETSCHEDPOLICY */
79 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_SETSCOPE */
80 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_SETSTACKADDR */
81 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_SETSTACKSIZE */
82 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_CANCEL */
83 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_CLEANUP_POP */
84 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_CLEANUP_PUSH */
85 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_COND_BROADCAST */
86 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_COND_DESTROY */
87 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_COND_INIT */
88 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_COND_SIGNAL */
89 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_COND_TIMEDWAIT */
90 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_COND_WAIT */
91 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_DETACH */
92 {PJT_DUAL_ENTRY(stub_true)}, /* PJT_EQUAL */
93 {PJT_DUAL_ENTRY(stub_exit)}, /* PJT_EXIT */
94 {PJT_DUAL_ENTRY(stub_null)}, /* PJT_GETSPECIFIC */
95 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_JOIN */
96 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_KEY_CREATE */
97 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_KEY_DELETE */
98 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_KILL */
99 {PJT_DUAL_ENTRY(stub_main)}, /* PJT_MAIN_NP */
100 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_MUTEXATTR_DESTROY */
101 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_MUTEXATTR_INIT */
102 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_MUTEXATTR_SETTYPE */
103 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_MUTEX_DESTROY */
104 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_MUTEX_INIT */
105 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_MUTEX_LOCK */
106 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_MUTEX_TRYLOCK */
107 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_MUTEX_UNLOCK */
108 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ONCE */
109 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_RWLOCK_DESTROY */
110 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_RWLOCK_INIT */
111 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_RWLOCK_RDLOCK */
112 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_RWLOCK_TRYRDLOCK */
113 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_RWLOCK_TRYWRLOCK */
114 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_RWLOCK_UNLOCK */
115 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_RWLOCK_WRLOCK */
116 {PJT_DUAL_ENTRY(stub_self)}, /* PJT_SELF */
117 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_SETCANCELSTATE */
118 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_SETCANCELTYPE */
119 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_SETSPECIFIC */
120 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_SIGMASK */
121 {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_TESTCANCEL */
125 * Weak aliases for exported (pthread_*) and internal (_pthread_*) routines.
127 #define WEAK_REF(sym, alias) __weak_reference(sym, alias)
129 #define FUNC_TYPE(name) __CONCAT(name, _func_t)
130 #define FUNC_INT(name) __CONCAT(name, _int)
131 #define FUNC_EXP(name) __CONCAT(name, _exp)
133 #define STUB_FUNC(name, idx, ret) \
134 static ret FUNC_EXP(name)(void) __used; \
135 static ret FUNC_INT(name)(void) __used; \
136 WEAK_REF(FUNC_EXP(name), name); \
137 WEAK_REF(FUNC_INT(name), __CONCAT(_, name)); \
138 typedef ret (*FUNC_TYPE(name))(void); \
139 static ret FUNC_EXP(name)(void) \
141 FUNC_TYPE(name) func; \
142 func = (FUNC_TYPE(name))__thr_jtable[idx][0]; \
145 static ret FUNC_INT(name)(void) \
147 FUNC_TYPE(name) func; \
148 func = (FUNC_TYPE(name))__thr_jtable[idx][1]; \
152 #define STUB_FUNC1(name, idx, ret, p0_type) \
153 static ret FUNC_EXP(name)(p0_type) __used; \
154 static ret FUNC_INT(name)(p0_type) __used; \
155 WEAK_REF(FUNC_EXP(name), name); \
156 WEAK_REF(FUNC_INT(name), __CONCAT(_, name)); \
157 typedef ret (*FUNC_TYPE(name))(p0_type); \
158 static ret FUNC_EXP(name)(p0_type p0) \
160 FUNC_TYPE(name) func; \
161 func = (FUNC_TYPE(name))__thr_jtable[idx][0]; \
164 static ret FUNC_INT(name)(p0_type p0) \
166 FUNC_TYPE(name) func; \
167 func = (FUNC_TYPE(name))__thr_jtable[idx][1]; \
171 #define STUB_FUNC2(name, idx, ret, p0_type, p1_type) \
172 static ret FUNC_EXP(name)(p0_type, p1_type) __used; \
173 static ret FUNC_INT(name)(p0_type, p1_type) __used; \
174 WEAK_REF(FUNC_EXP(name), name); \
175 WEAK_REF(FUNC_INT(name), __CONCAT(_, name)); \
176 typedef ret (*FUNC_TYPE(name))(p0_type, p1_type); \
177 static ret FUNC_EXP(name)(p0_type p0, p1_type p1) \
179 FUNC_TYPE(name) func; \
180 func = (FUNC_TYPE(name))__thr_jtable[idx][0]; \
181 return (func(p0, p1)); \
183 static ret FUNC_INT(name)(p0_type p0, p1_type p1) \
185 FUNC_TYPE(name) func; \
186 func = (FUNC_TYPE(name))__thr_jtable[idx][1]; \
187 return (func(p0, p1)); \
190 #define STUB_FUNC3(name, idx, ret, p0_type, p1_type, p2_type) \
191 static ret FUNC_EXP(name)(p0_type, p1_type, p2_type) __used; \
192 static ret FUNC_INT(name)(p0_type, p1_type, p2_type) __used; \
193 WEAK_REF(FUNC_EXP(name), name); \
194 WEAK_REF(FUNC_INT(name), __CONCAT(_, name)); \
195 typedef ret (*FUNC_TYPE(name))(p0_type, p1_type, p2_type); \
196 static ret FUNC_EXP(name)(p0_type p0, p1_type p1, p2_type p2) \
198 FUNC_TYPE(name) func; \
199 func = (FUNC_TYPE(name))__thr_jtable[idx][0]; \
200 return (func(p0, p1, p2)); \
202 static ret FUNC_INT(name)(p0_type p0, p1_type p1, p2_type p2) \
204 FUNC_TYPE(name) func; \
205 func = (FUNC_TYPE(name))__thr_jtable[idx][1]; \
206 return (func(p0, p1, p2)); \
209 STUB_FUNC1(pthread_cond_broadcast, PJT_COND_BROADCAST, int, void *)
210 STUB_FUNC1(pthread_cond_destroy, PJT_COND_DESTROY, int, void *)
211 STUB_FUNC2(pthread_cond_init, PJT_COND_INIT, int, void *, void *)
212 STUB_FUNC1(pthread_cond_signal, PJT_COND_SIGNAL, int, void *)
213 STUB_FUNC2(pthread_cond_wait, PJT_COND_WAIT, int, void *, void *)
214 STUB_FUNC1(pthread_getspecific, PJT_GETSPECIFIC, void *, pthread_key_t)
215 STUB_FUNC2(pthread_key_create, PJT_KEY_CREATE, int, void *, void *)
216 STUB_FUNC1(pthread_key_delete, PJT_KEY_DELETE, int, pthread_key_t)
217 STUB_FUNC(pthread_main_np, PJT_MAIN_NP, int)
218 STUB_FUNC1(pthread_mutex_destroy, PJT_MUTEX_DESTROY, int, void *)
219 STUB_FUNC2(pthread_mutex_init, PJT_MUTEX_INIT, int, void *, void *)
220 STUB_FUNC1(pthread_mutex_lock, PJT_MUTEX_LOCK, int, void *)
221 STUB_FUNC1(pthread_mutex_trylock, PJT_MUTEX_TRYLOCK, int, void *)
222 STUB_FUNC1(pthread_mutex_unlock, PJT_MUTEX_UNLOCK, int, void *)
223 STUB_FUNC1(pthread_mutexattr_destroy, PJT_MUTEXATTR_DESTROY, int, void *)
224 STUB_FUNC1(pthread_mutexattr_init, PJT_MUTEXATTR_INIT, int, void *)
225 STUB_FUNC1(pthread_mutexattr_settype, PJT_MUTEXATTR_SETTYPE, int, void *)
226 STUB_FUNC2(pthread_once, PJT_ONCE, int, void *, void *)
227 STUB_FUNC1(pthread_rwlock_destroy, PJT_RWLOCK_DESTROY, int, void *)
228 STUB_FUNC2(pthread_rwlock_init, PJT_RWLOCK_INIT, int, void *, void *)
229 STUB_FUNC1(pthread_rwlock_rdlock, PJT_RWLOCK_RDLOCK, int, void *)
230 STUB_FUNC1(pthread_rwlock_tryrdlock, PJT_RWLOCK_TRYRDLOCK, int, void *)
231 STUB_FUNC1(pthread_rwlock_trywrlock, PJT_RWLOCK_TRYWRLOCK, int, void *)
232 STUB_FUNC1(pthread_rwlock_unlock, PJT_RWLOCK_UNLOCK, int, void *)
233 STUB_FUNC1(pthread_rwlock_wrlock, PJT_RWLOCK_WRLOCK, int, void *)
234 STUB_FUNC(pthread_self, PJT_SELF, pthread_t)
235 STUB_FUNC2(pthread_setspecific, PJT_SETSPECIFIC, int, pthread_key_t, void *)
236 STUB_FUNC3(pthread_sigmask, PJT_SIGMASK, int, int, void *, void *)
237 STUB_FUNC3(pthread_atfork, PJT_ATFORK, int, void *, void *, void*)
238 STUB_FUNC1(pthread_attr_destroy, PJT_ATTR_DESTROY, int, void *);
239 STUB_FUNC2(pthread_attr_getdetachstate, PJT_ATTR_GETDETACHSTATE, int, void *, void *)
240 STUB_FUNC2(pthread_attr_getguardsize, PJT_ATTR_GETGUARDSIZE, int, void *, void *)
241 STUB_FUNC2(pthread_attr_getstackaddr, PJT_ATTR_GETSTACKADDR, int, void *, void *)
242 STUB_FUNC2(pthread_attr_getstacksize, PJT_ATTR_GETSTACKSIZE, int, void *, void *)
243 STUB_FUNC2(pthread_attr_getinheritsched, PJT_ATTR_GETINHERITSCHED, int, void *, void *)
244 STUB_FUNC2(pthread_attr_getschedparam, PJT_ATTR_GETSCHEDPARAM, int, void *, void *)
245 STUB_FUNC2(pthread_attr_getschedpolicy, PJT_ATTR_GETSCHEDPOLICY, int, void *, void *)
246 STUB_FUNC2(pthread_attr_getscope, PJT_ATTR_GETSCOPE, int, void *, void *)
247 STUB_FUNC1(pthread_attr_init, PJT_ATTR_INIT, int, void *)
248 STUB_FUNC2(pthread_attr_setdetachstate, PJT_ATTR_SETDETACHSTATE, int, void *, int)
249 STUB_FUNC2(pthread_attr_setguardsize, PJT_ATTR_SETGUARDSIZE, int, void *, size_t)
250 STUB_FUNC2(pthread_attr_setstackaddr, PJT_ATTR_SETSTACKADDR, int, void *, void *)
251 STUB_FUNC2(pthread_attr_setstacksize, PJT_ATTR_SETSTACKSIZE, int, void *, size_t)
252 STUB_FUNC2(pthread_attr_setinheritsched, PJT_ATTR_SETINHERITSCHED, int, void *, int)
253 STUB_FUNC2(pthread_attr_setschedparam, PJT_ATTR_SETSCHEDPARAM, int, void *, void *)
254 STUB_FUNC2(pthread_attr_setschedpolicy, PJT_ATTR_SETSCHEDPOLICY, int, void *, int)
255 STUB_FUNC2(pthread_attr_setscope, PJT_ATTR_SETSCOPE, int, void *, int)
256 STUB_FUNC1(pthread_cancel, PJT_CANCEL, int, void *)
257 STUB_FUNC1(pthread_cleanup_pop, PJT_CLEANUP_POP, int, int)
258 STUB_FUNC2(pthread_cleanup_push, PJT_CLEANUP_PUSH, void, void *, void *)
259 STUB_FUNC3(pthread_cond_timedwait, PJT_COND_TIMEDWAIT, int, void *, void *, void *)
260 STUB_FUNC1(pthread_detach, PJT_DETACH, int, void *)
261 STUB_FUNC2(pthread_equal, PJT_EQUAL, int, void *, void *)
262 STUB_FUNC1(pthread_exit, PJT_EXIT, void, void *)
263 STUB_FUNC2(pthread_join, PJT_JOIN, int, void *, void *)
264 STUB_FUNC2(pthread_kill, PJT_KILL, int, void *, int)
265 STUB_FUNC2(pthread_setcancelstate, PJT_SETCANCELSTATE, int, int, void *)
266 STUB_FUNC2(pthread_setcanceltype, PJT_SETCANCELTYPE, int, int, void *)
267 STUB_FUNC(pthread_testcancel, PJT_TESTCANCEL, void)
281 static struct pthread *
284 return (&main_thread);