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