1 | /* Libc stubs for pthread functions. Hurd pthread version. |
2 | Copyright (C) 2002-2024 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_setschedparam, |
61 | (pthread_attr_t *attr, const struct sched_param *param), |
62 | (attr, param), 0) |
63 | |
64 | FORWARD (pthread_attr_getscope, |
65 | (const pthread_attr_t *attr, int *scope), (attr, scope), 0) |
66 | FORWARD (pthread_attr_setscope, (pthread_attr_t *attr, int scope), |
67 | (attr, scope), 0) |
68 | |
69 | |
70 | FORWARD (pthread_condattr_destroy, (pthread_condattr_t *attr), (attr), 0) |
71 | FORWARD (pthread_condattr_init, (pthread_condattr_t *attr), (attr), 0) |
72 | |
73 | |
74 | FORWARD (pthread_cond_broadcast, (pthread_cond_t *cond), (cond), 0) |
75 | FORWARD (pthread_cond_destroy, (pthread_cond_t *cond), (cond), 0) |
76 | FORWARD (pthread_cond_init, |
77 | (pthread_cond_t *cond, const pthread_condattr_t *cond_attr), |
78 | (cond, cond_attr), 0) |
79 | FORWARD (pthread_cond_signal, (pthread_cond_t *cond), (cond), 0) |
80 | FORWARD (pthread_cond_wait, (pthread_cond_t *cond, pthread_mutex_t *mutex), |
81 | (cond, mutex), 0) |
82 | FORWARD (pthread_cond_timedwait, |
83 | (pthread_cond_t *cond, pthread_mutex_t *mutex, |
84 | const struct timespec *abstime), (cond, mutex, abstime), 0) |
85 | |
86 | /* Use an alias to avoid warning, as pthread_exit is declared noreturn. */ |
87 | FORWARD_NORETURN (__pthread_exit, void, (void *retval), (retval), |
88 | exit (EXIT_SUCCESS)) |
89 | strong_alias (__pthread_exit, pthread_exit); |
90 | |
91 | FORWARD (pthread_mutex_destroy, (pthread_mutex_t *mutex), (mutex), 0) |
92 | |
93 | FORWARD (pthread_mutex_init, |
94 | (pthread_mutex_t *mutex, const pthread_mutexattr_t *mutexattr), |
95 | (mutex, mutexattr), 0) |
96 | |
97 | FORWARD (pthread_mutex_lock, (pthread_mutex_t *mutex), (mutex), 0) |
98 | |
99 | FORWARD (pthread_mutex_unlock, (pthread_mutex_t *mutex), (mutex), 0) |
100 | |
101 | FORWARD (__pthread_setcancelstate, (int state, int *oldstate), |
102 | (state, oldstate), 0) |
103 | strong_alias (__pthread_setcancelstate, pthread_setcancelstate); |
104 | |
105 | FORWARD (pthread_setcanceltype, (int type, int *oldtype), (type, oldtype), 0) |
106 | |
107 | FORWARD2 (__pthread_get_cleanup_stack, struct __pthread_cancelation_handler **, |
108 | (void), (), return &__pthread_cleanup_stack); |
109 | |