/* The weak pthread functions for Linux. Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #define _GNU_SOURCE #include <errno.h> #include <limits.h> #include <stdlib.h> /**********************************************************************/ /* Weaks for application/library use. * * We need to define weaks here to cover all the pthread functions that * libc itself will use so that we aren't forced to link libc.so to * libpthread.so. When an application doesn't use pthreads support, * the locking functions used by libc itself basically become no-ops. * However, if the application uses pthreads, then it will pull in * libpthread.so whose symbols will override these weaks magically * turning the internal libc mutex calls from no-ops to real locking * calls. */ /* glibc itself defines all these, but we don't need them in uClibc * * Verified by comparing to glibc's linuxthreads/forward.c and defined * only those that are in the glibc abi. * The commented aliases are ones that were previously defined in uClibc * and which I left in for documentation. */ static int __pthread_return_0 __P ((void)); static int __pthread_return_0 (void) { return 0; } /* weak_alias (__pthread_return_0, pthread_attr_destroy) weak_alias (__pthread_return_0, pthread_attr_getdetachstate) weak_alias (__pthread_return_0, pthread_attr_getinheritsched) weak_alias (__pthread_return_0, pthread_attr_getschedparam) weak_alias (__pthread_return_0, pthread_attr_getschedpolicy) weak_alias (__pthread_return_0, pthread_attr_getscope) weak_alias (__pthread_return_0, pthread_attr_getstackaddr) weak_alias (__pthread_return_0, pthread_attr_getstacksize) weak_alias (__pthread_return_0, pthread_attr_init) weak_alias (__pthread_return_0, pthread_attr_setdetachstate) weak_alias (__pthread_return_0, pthread_attr_setinheritsched) weak_alias (__pthread_return_0, pthread_attr_setschedparam) weak_alias (__pthread_return_0, pthread_attr_setschedpolicy) weak_alias (__pthread_return_0, pthread_attr_setscope) weak_alias (__pthread_return_0, pthread_attr_setstackaddr) weak_alias (__pthread_return_0, pthread_attr_setstacksize) weak_alias (__pthread_return_0, pthread_cond_broadcast) weak_alias (__pthread_return_0, pthread_cond_destroy) weak_alias (__pthread_return_0, pthread_cond_init) weak_alias (__pthread_return_0, pthread_cond_signal) weak_alias (__pthread_return_0, pthread_cond_timedwait) weak_alias (__pthread_return_0, pthread_cond_wait) weak_alias (__pthread_return_0, pthread_condattr_destroy) weak_alias (__pthread_return_0, pthread_condattr_init) weak_alias (__pthread_return_0, pthread_getschedparam) weak_alias (__pthread_return_0, pthread_getcancelstate) weak_alias (__pthread_return_0, pthread_getconcurrency) weak_alias (__pthread_return_0, pthread_mutex_destroy) weak_alias (__pthread_return_0, pthread_mutex_init) weak_alias (__pthread_return_0, pthread_mutex_lock) weak_alias (__pthread_return_0, pthread_mutex_trylock) weak_alias (__pthread_return_0, pthread_mutex_unlock) weak_alias (__pthread_return_0, pthread_mutexattr_destroy) weak_alias (__pthread_return_0, pthread_mutexattr_gettype) weak_alias (__pthread_return_0, pthread_mutexattr_init) weak_alias (__pthread_return_0, pthread_mutexattr_settype) weak_alias (__pthread_return_0, pthread_rwlock_destroy) weak_alias (__pthread_return_0, pthread_rwlock_init) weak_alias (__pthread_return_0, pthread_rwlock_rdlock) weak_alias (__pthread_return_0, pthread_rwlock_tryrdlock) weak_alias (__pthread_return_0, pthread_rwlock_trywrlock) weak_alias (__pthread_return_0, pthread_rwlock_unlock) weak_alias (__pthread_return_0, pthread_rwlock_wrlock) weak_alias (__pthread_return_0, pthread_rwlockattr_destroy) weak_alias (__pthread_return_0, pthread_rwlockattr_getpshared) weak_alias (__pthread_return_0, pthread_rwlockattr_init) weak_alias (__pthread_return_0, pthread_rwlockattr_setpshared) weak_alias (__pthread_return_0, pthread_self) weak_alias (__pthread_return_0, pthread_setcancelstate) weak_alias (__pthread_return_0, pthread_setcanceltype) weak_alias (__pthread_return_0, pthread_setconcurrency) weak_alias (__pthread_return_0, pthread_setschedparam) static int __pthread_return_1 __P ((void)); static int __pthread_return_1 (void) { return 1; } weak_alias (__pthread_return_1, pthread_equal) void weak_function pthread_exit (void *retval) { exit (EXIT_SUCCESS); } */ /**********************************************************************/ /* Weaks used internally by the C library. */ weak_alias (__pthread_return_0, __pthread_mutex_init) weak_alias (__pthread_return_0, __pthread_mutex_lock) weak_alias (__pthread_return_0, __pthread_mutex_trylock) weak_alias (__pthread_return_0, __pthread_mutex_unlock) #ifdef __UCLIBC_HAS_THREADS_NATIVE__ weak_alias (__pthread_return_0, pthread_mutexattr_init) weak_alias (__pthread_return_0, pthread_mutexattr_settype) weak_alias (__pthread_return_0, pthread_mutexattr_destroy) #endif /**********************************************************************/