1 /* Libc stubs for pthread functions. Hurd pthread version.
2 Copyright (C) 2002-2023 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 FORWARD (__pthread_setcancelstate, (int state, int *oldstate),
134 (state, oldstate), 0)
135 strong_alias (__pthread_setcancelstate, pthread_setcancelstate);
136
137 FORWARD (pthread_setcanceltype, (int type, int *oldtype), (type, oldtype), 0)
138
139 FORWARD2 (__pthread_get_cleanup_stack, struct __pthread_cancelation_handler **,
140 (void), (), return &__pthread_cleanup_stack);