1 | /* Libc stubs for pthread functions. Hurd pthread version. |
2 | Copyright (C) 2002-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <errno.h> |
20 | #include <dlfcn.h> |
21 | #include <stdlib.h> |
22 | #include <shlib-compat.h> |
23 | #include <pthread-functions.h> |
24 | #include <libc-lock.h> |
25 | #include <pt-internal.h> |
26 | |
27 | /* Pointers to the libc functions. */ |
28 | struct pthread_functions __libc_pthread_functions attribute_hidden; |
29 | int __libc_pthread_functions_init attribute_hidden; |
30 | |
31 | |
32 | #define FORWARD2(name, rettype, decl, params, defaction) \ |
33 | rettype \ |
34 | name decl \ |
35 | { \ |
36 | if (!__libc_pthread_functions_init) \ |
37 | defaction; \ |
38 | \ |
39 | return PTHFCT_CALL (ptr_##name, params); \ |
40 | } |
41 | |
42 | /* Same as FORWARD2, only without return. */ |
43 | #define FORWARD_NORETURN(name, rettype, decl, params, defaction) \ |
44 | rettype \ |
45 | name decl \ |
46 | { \ |
47 | if (!__libc_pthread_functions_init) \ |
48 | defaction; \ |
49 | \ |
50 | PTHFCT_CALL (ptr_##name, params); \ |
51 | } |
52 | |
53 | #define FORWARD(name, decl, params, defretval) \ |
54 | FORWARD2 (name, int, decl, params, return defretval) |
55 | |
56 | FORWARD (pthread_attr_destroy, (pthread_attr_t *attr), (attr), 0) |
57 | |
58 | FORWARD (pthread_attr_init, (pthread_attr_t *attr), (attr), 0) |
59 | |
60 | FORWARD (pthread_attr_getdetachstate, |
61 | (const pthread_attr_t *attr, int *detachstate), (attr, detachstate), |
62 | 0) |
63 | FORWARD (pthread_attr_setdetachstate, (pthread_attr_t *attr, int detachstate), |
64 | (attr, detachstate), 0) |
65 | |
66 | FORWARD (pthread_attr_getinheritsched, |
67 | (const pthread_attr_t *attr, int *inherit), (attr, inherit), 0) |
68 | FORWARD (pthread_attr_setinheritsched, (pthread_attr_t *attr, int inherit), |
69 | (attr, inherit), 0) |
70 | |
71 | FORWARD (pthread_attr_getschedparam, |
72 | (const pthread_attr_t *attr, struct sched_param *param), |
73 | (attr, param), 0) |
74 | FORWARD (pthread_attr_setschedparam, |
75 | (pthread_attr_t *attr, const struct sched_param *param), |
76 | (attr, param), 0) |
77 | |
78 | FORWARD (pthread_attr_getschedpolicy, |
79 | (const pthread_attr_t *attr, int *policy), (attr, policy), 0) |
80 | FORWARD (pthread_attr_setschedpolicy, (pthread_attr_t *attr, int policy), |
81 | (attr, policy), 0) |
82 | |
83 | FORWARD (pthread_attr_getscope, |
84 | (const pthread_attr_t *attr, int *scope), (attr, scope), 0) |
85 | FORWARD (pthread_attr_setscope, (pthread_attr_t *attr, int scope), |
86 | (attr, scope), 0) |
87 | |
88 | |
89 | FORWARD (pthread_condattr_destroy, (pthread_condattr_t *attr), (attr), 0) |
90 | FORWARD (pthread_condattr_init, (pthread_condattr_t *attr), (attr), 0) |
91 | |
92 | |
93 | FORWARD (pthread_cond_broadcast, (pthread_cond_t *cond), (cond), 0) |
94 | FORWARD (pthread_cond_destroy, (pthread_cond_t *cond), (cond), 0) |
95 | FORWARD (pthread_cond_init, |
96 | (pthread_cond_t *cond, const pthread_condattr_t *cond_attr), |
97 | (cond, cond_attr), 0) |
98 | FORWARD (pthread_cond_signal, (pthread_cond_t *cond), (cond), 0) |
99 | FORWARD (pthread_cond_wait, (pthread_cond_t *cond, pthread_mutex_t *mutex), |
100 | (cond, mutex), 0) |
101 | FORWARD (pthread_cond_timedwait, |
102 | (pthread_cond_t *cond, pthread_mutex_t *mutex, |
103 | const struct timespec *abstime), (cond, mutex, abstime), 0) |
104 | |
105 | FORWARD (pthread_equal, (pthread_t thread1, pthread_t thread2), |
106 | (thread1, thread2), 1) |
107 | |
108 | |
109 | /* Use an alias to avoid warning, as pthread_exit is declared noreturn. */ |
110 | FORWARD_NORETURN (__pthread_exit, void, (void *retval), (retval), |
111 | exit (EXIT_SUCCESS)) |
112 | strong_alias (__pthread_exit, pthread_exit); |
113 | |
114 | |
115 | FORWARD (pthread_getschedparam, |
116 | (pthread_t target_thread, int *policy, struct sched_param *param), |
117 | (target_thread, policy, param), 0) |
118 | FORWARD (pthread_setschedparam, |
119 | (pthread_t target_thread, int policy, |
120 | const struct sched_param *param), (target_thread, policy, param), 0) |
121 | |
122 | |
123 | FORWARD (pthread_mutex_destroy, (pthread_mutex_t *mutex), (mutex), 0) |
124 | |
125 | FORWARD (pthread_mutex_init, |
126 | (pthread_mutex_t *mutex, const pthread_mutexattr_t *mutexattr), |
127 | (mutex, mutexattr), 0) |
128 | |
129 | FORWARD (pthread_mutex_lock, (pthread_mutex_t *mutex), (mutex), 0) |
130 | |
131 | FORWARD (pthread_mutex_unlock, (pthread_mutex_t *mutex), (mutex), 0) |
132 | |
133 | |
134 | FORWARD2 (pthread_self, pthread_t, (void), (), return 0) |
135 | |
136 | |
137 | FORWARD (__pthread_setcancelstate, (int state, int *oldstate), |
138 | (state, oldstate), 0) |
139 | strong_alias (__pthread_setcancelstate, pthread_setcancelstate); |
140 | |
141 | FORWARD (pthread_setcanceltype, (int type, int *oldtype), (type, oldtype), 0) |
142 | |
143 | FORWARD2 (__pthread_get_cleanup_stack, struct __pthread_cancelation_handler **, |
144 | (void), (), return &__pthread_cleanup_stack); |
145 | |