/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ #include <features.h> #include <stdlib.h> #include <dlfcn.h> /* psm: keep this before internals.h */ #if 0 vda: here is why: headers contain libc_hidden_proto(foo). In libpthread/linuxthreads.old/sysdeps/pthread/bits/libc-lock.h adding libc_hidden_proto(foo) just before weak_extern (__pthread_initialize) will not warn: /* libc_hidden_proto(foo) */ weak_extern (__pthread_initialize) /* libc_hidden_proto(foo) */ but adding after will! Which is extremely strange - weak_extern expands into just "#pragma weak __pthread_initialize". TODO: determine whether it is a gcc bug or what (see gcc.gnu.org/PR36282). For now, just include all headers before internals.h (they are again included in internals.h - maybe remove them there later) #endif #include <string.h> #include <limits.h> #include <setjmp.h> #include <signal.h> #include <unistd.h> #include <sys/types.h> #include <sys/wait.h> #include <sys/time.h> #include "internals.h" /* Pointers to the libc functions. */ struct pthread_functions __libc_pthread_functions attribute_hidden; # define FORWARD2(name, rettype, decl, params, defaction) \ rettype \ name decl \ { \ if (__libc_pthread_functions.ptr_##name == NULL) \ defaction; \ \ return __libc_pthread_functions.ptr_##name params; \ } # define FORWARD(name, decl, params, defretval) \ FORWARD2 (name, int, decl, params, return defretval) FORWARD (pthread_attr_destroy, (pthread_attr_t *attr), (attr), 0) FORWARD (pthread_attr_init, (pthread_attr_t *attr), (attr), 0) FORWARD (pthread_attr_getdetachstate, (const pthread_attr_t *attr, int *detachstate), (attr, detachstate), 0) FORWARD (pthread_attr_setdetachstate, (pthread_attr_t *attr, int detachstate), (attr, detachstate), 0) FORWARD (pthread_attr_getinheritsched, (const pthread_attr_t *attr, int *inherit), (attr, inherit), 0) FORWARD (pthread_attr_setinheritsched, (pthread_attr_t *attr, int inherit), (attr, inherit), 0) FORWARD (pthread_attr_getschedparam, (const pthread_attr_t *attr, struct sched_param *param), (attr, param), 0) FORWARD (pthread_attr_setschedparam, (pthread_attr_t *attr, const struct sched_param *param), (attr, param), 0) FORWARD (pthread_attr_getschedpolicy, (const pthread_attr_t *attr, int *policy), (attr, policy), 0) FORWARD (pthread_attr_setschedpolicy, (pthread_attr_t *attr, int policy), (attr, policy), 0) FORWARD (pthread_attr_getscope, (const pthread_attr_t *attr, int *scope), (attr, scope), 0) FORWARD (pthread_attr_setscope, (pthread_attr_t *attr, int scope), (attr, scope), 0) FORWARD (pthread_condattr_destroy, (pthread_condattr_t *attr), (attr), 0) FORWARD (pthread_condattr_init, (pthread_condattr_t *attr), (attr), 0) FORWARD (pthread_cond_broadcast, (pthread_cond_t *cond), (cond), 0) FORWARD (pthread_cond_destroy, (pthread_cond_t *cond), (cond), 0) FORWARD (pthread_cond_init, (pthread_cond_t *cond, const pthread_condattr_t *cond_attr), (cond, cond_attr), 0) FORWARD (pthread_cond_signal, (pthread_cond_t *cond), (cond), 0) FORWARD (pthread_cond_wait, (pthread_cond_t *cond, pthread_mutex_t *mutex), (cond, mutex), 0) FORWARD (pthread_cond_timedwait, (pthread_cond_t *cond, pthread_mutex_t *mutex, const struct timespec *abstime), (cond, mutex, abstime), 0) FORWARD (pthread_equal, (pthread_t thread1, pthread_t thread2), (thread1, thread2), 1) /* Use an alias to avoid warning, as pthread_exit is declared noreturn. */ FORWARD2 (__pthread_exit, void, (void *retval), (retval), exit (EXIT_SUCCESS)) strong_alias (__pthread_exit, pthread_exit) FORWARD (pthread_getschedparam, (pthread_t target_thread, int *policy, struct sched_param *param), (target_thread, policy, param), 0) FORWARD (pthread_setschedparam, (pthread_t target_thread, int policy, const struct sched_param *param), (target_thread, policy, param), 0) FORWARD (pthread_mutex_destroy, (pthread_mutex_t *mutex), (mutex), 0) FORWARD (pthread_mutex_init, (pthread_mutex_t *mutex, const pthread_mutexattr_t *mutexattr), (mutex, mutexattr), 0) strong_alias(pthread_mutex_init, __pthread_mutex_init) FORWARD (pthread_mutex_lock, (pthread_mutex_t *mutex), (mutex), 0) strong_alias(pthread_mutex_lock, __pthread_mutex_lock) FORWARD (pthread_mutex_trylock, (pthread_mutex_t *mutex), (mutex), 0) strong_alias(pthread_mutex_trylock, __pthread_mutex_trylock) FORWARD (pthread_mutex_unlock, (pthread_mutex_t *mutex), (mutex), 0) strong_alias(pthread_mutex_unlock, __pthread_mutex_unlock) FORWARD2 (pthread_self, pthread_t, (void), (), return 0) FORWARD (pthread_setcancelstate, (int state, int *oldstate), (state, oldstate), 0) FORWARD (pthread_setcanceltype, (int type, int *oldtype), (type, oldtype), 0) #if 0 FORWARD2 (_pthread_cleanup_push, void, (struct _pthread_cleanup_buffer * buffer, void (*routine)(void *), void * arg), (buffer, routine, arg), return) #endif FORWARD2 (_pthread_cleanup_push_defer, void, (struct _pthread_cleanup_buffer * buffer, void (*routine)(void *), void * arg), (buffer, routine, arg), return) #if 0 FORWARD2 (_pthread_cleanup_pop, void, (struct _pthread_cleanup_buffer * buffer, int execute), (buffer, execute), return) #endif FORWARD2 (_pthread_cleanup_pop_restore, void, (struct _pthread_cleanup_buffer * buffer, int execute), (buffer, execute), return)