/* Copyright (C) 2002-2017 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 <dlfcn.h> #include <pthreadP.h> #include <signal.h> #include <stdlib.h> #include <shlib-compat.h> #include <atomic.h> #include <safe-fatal.h> /* Pointers to the libc functions. */ struct pthread_functions __libc_pthread_functions attribute_hidden; int __libc_pthread_functions_init attribute_hidden; #define FORWARD2(name, rettype, decl, params, defaction) \ rettype \ name decl \ { \ if (!__libc_pthread_functions_init) \ defaction; \ \ return PTHFCT_CALL (ptr_##name, params); \ } /* Same as FORWARD2, only without return. */ #define FORWARD_NORETURN(name, rettype, decl, params, defaction) \ rettype \ name decl \ { \ if (!__libc_pthread_functions_init) \ defaction; \ \ PTHFCT_CALL (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) #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_1) FORWARD (__pthread_attr_init_2_0, (pthread_attr_t *attr), (attr), 0) compat_symbol (libc, __pthread_attr_init_2_0, pthread_attr_init, GLIBC_2_0); #endif FORWARD (__pthread_attr_init_2_1, (pthread_attr_t *attr), (attr), 0) versioned_symbol (libc, __pthread_attr_init_2_1, pthread_attr_init, GLIBC_2_1); 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) #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2) FORWARD2 (__pthread_cond_broadcast_2_0, int attribute_compat_text_section, (pthread_cond_2_0_t *cond), (cond), return 0) compat_symbol (libc, __pthread_cond_broadcast_2_0, pthread_cond_broadcast, GLIBC_2_0); #endif FORWARD (__pthread_cond_broadcast, (pthread_cond_t *cond), (cond), 0) versioned_symbol (libc, __pthread_cond_broadcast, pthread_cond_broadcast, GLIBC_2_3_2); #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2) FORWARD2 (__pthread_cond_destroy_2_0, int attribute_compat_text_section, (pthread_cond_2_0_t *cond), (cond), return 0) compat_symbol (libc, __pthread_cond_destroy_2_0, pthread_cond_destroy, GLIBC_2_0); #endif FORWARD (__pthread_cond_destroy, (pthread_cond_t *cond), (cond), 0) versioned_symbol (libc, __pthread_cond_destroy, pthread_cond_destroy, GLIBC_2_3_2); #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2) FORWARD2 (__pthread_cond_init_2_0, int attribute_compat_text_section, (pthread_cond_2_0_t *cond, const pthread_condattr_t *cond_attr), (cond, cond_attr), return 0) compat_symbol (libc, __pthread_cond_init_2_0, pthread_cond_init, GLIBC_2_0); #endif FORWARD (__pthread_cond_init, (pthread_cond_t *cond, const pthread_condattr_t *cond_attr), (cond, cond_attr), 0) versioned_symbol (libc, __pthread_cond_init, pthread_cond_init, GLIBC_2_3_2); #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2) FORWARD2 (__pthread_cond_signal_2_0, int attribute_compat_text_section, (pthread_cond_2_0_t *cond), (cond), return 0) compat_symbol (libc, __pthread_cond_signal_2_0, pthread_cond_signal, GLIBC_2_0); #endif FORWARD (__pthread_cond_signal, (pthread_cond_t *cond), (cond), 0) versioned_symbol (libc, __pthread_cond_signal, pthread_cond_signal, GLIBC_2_3_2); #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2) FORWARD2 (__pthread_cond_wait_2_0, int attribute_compat_text_section, (pthread_cond_2_0_t *cond, pthread_mutex_t *mutex), (cond, mutex), return 0) compat_symbol (libc, __pthread_cond_wait_2_0, pthread_cond_wait, GLIBC_2_0); #endif FORWARD (__pthread_cond_wait, (pthread_cond_t *cond, pthread_mutex_t *mutex), (cond, mutex), 0) versioned_symbol (libc, __pthread_cond_wait, pthread_cond_wait, GLIBC_2_3_2); #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2) FORWARD2 (__pthread_cond_timedwait_2_0, int attribute_compat_text_section, (pthread_cond_2_0_t *cond, pthread_mutex_t *mutex, const struct timespec *abstime), (cond, mutex, abstime), return 0) compat_symbol (libc, __pthread_cond_timedwait_2_0, pthread_cond_timedwait, GLIBC_2_0); #endif FORWARD (__pthread_cond_timedwait, (pthread_cond_t *cond, pthread_mutex_t *mutex, const struct timespec *abstime), (cond, mutex, abstime), 0) versioned_symbol (libc, __pthread_cond_timedwait, pthread_cond_timedwait, GLIBC_2_3_2); FORWARD (pthread_equal, (pthread_t thread1, pthread_t thread2), (thread1, thread2), 1) FORWARD_NORETURN (__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) FORWARD (pthread_mutex_lock, (pthread_mutex_t *mutex), (mutex), 0) FORWARD (pthread_mutex_unlock, (pthread_mutex_t *mutex), (mutex), 0) FORWARD2 (pthread_self, pthread_t, (void), (), return 0) FORWARD (__pthread_setcancelstate, (int state, int *oldstate), (state, oldstate), 0) strong_alias (__pthread_setcancelstate, pthread_setcancelstate) FORWARD (pthread_setcanceltype, (int type, int *oldtype), (type, oldtype), 0) FORWARD_NORETURN (__pthread_unwind, void attribute_hidden __attribute ((noreturn)) __cleanup_fct_attribute attribute_compat_text_section, (__pthread_unwind_buf_t *buf), (buf), __safe_fatal ())