1 /* Libc stubs for pthread functions. Hurd pthread version. 2 Copyright (C) 2002-2021 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