nptl/forward.c

   1 /* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
   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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <dlfcn.h>
  21 #include <pthreadP.h>
  22 #include <stdlib.h>
  23
  24 #include <shlib-compat.h>
  25 #include <atomic.h>
  26
  27
  28 /* Pointers to the libc functions.  */
  29 struct pthread_functions __libc_pthread_functions attribute_hidden;
  30
  31
  32 #define FORWARD2(name, rettype, decl, params, defaction) \
  33 rettype                                                                       \
  34 name decl                                                                     \
  35 {                                                                             \
  36   if (__libc_pthread_functions.ptr_##name == NULL)                            \
  37     defaction;                                                                \
  38                                                                               \
  39   return __libc_pthread_functions.ptr_##name params;                          \
  40 }
  41
  42 #define FORWARD(name, decl, params, defretval) \
  43   FORWARD2 (name, int, decl, params, return defretval)
  44
  45
  46 FORWARD (pthread_attr_destroy, (pthread_attr_t *attr), (attr), 0)
  47
  48 #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_1)
  49 FORWARD (__pthread_attr_init_2_0, (pthread_attr_t *attr), (attr), 0)
  50 compat_symbol (libc, pthread_attr_init_2_0, pthread_attr_init, GLIBC_2_0);
  51 #endif
  52
  53 FORWARD (__pthread_attr_init_2_1, (pthread_attr_t *attr), (attr), 0)
  54 versioned_symbol (libc, __pthread_attr_init_2_1, pthread_attr_init, GLIBC_2_1);
  55
  56 FORWARD (pthread_attr_getdetachstate,
  57          (const pthread_attr_t *attr, int *detachstate), (attr, detachstate),
  58          0)
  59 FORWARD (pthread_attr_setdetachstate, (pthread_attr_t *attr, int detachstate),
  60          (attr, detachstate), 0)
  61
  62 FORWARD (pthread_attr_getinheritsched,
  63          (const pthread_attr_t *attr, int *inherit), (attr, inherit), 0)
  64 FORWARD (pthread_attr_setinheritsched, (pthread_attr_t *attr, int inherit),
  65          (attr, inherit), 0)
  66
  67 FORWARD (pthread_attr_getschedparam,
  68          (const pthread_attr_t *attr, struct sched_param *param),
  69          (attr, param), 0)
  70 FORWARD (pthread_attr_setschedparam,
  71          (pthread_attr_t *attr, const struct sched_param *param),
  72          (attr, param), 0)
  73
  74 FORWARD (pthread_attr_getschedpolicy,
  75          (const pthread_attr_t *attr, int *policy), (attr, policy), 0)
  76 FORWARD (pthread_attr_setschedpolicy, (pthread_attr_t *attr, int policy),
  77          (attr, policy), 0)
  78
  79 FORWARD (pthread_attr_getscope,
  80          (const pthread_attr_t *attr, int *scope), (attr, scope), 0)
  81 FORWARD (pthread_attr_setscope, (pthread_attr_t *attr, int scope),
  82          (attr, scope), 0)
  83
  84
  85 FORWARD (pthread_condattr_destroy, (pthread_condattr_t *attr), (attr), 0)
  86 FORWARD (pthread_condattr_init, (pthread_condattr_t *attr), (attr), 0)
  87
  88 #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2)
  89 FORWARD (__pthread_cond_broadcast_2_0, (pthread_cond_2_0_t *cond), (cond), 0)
  90 compat_symbol (libc, __pthread_cond_broadcast_2_0, pthread_cond_broadcast,
  91                GLIBC_2_0);
  92 #endif
  93 FORWARD (__pthread_cond_broadcast, (pthread_cond_t *cond), (cond), 0)
  94 versioned_symbol (libc, __pthread_cond_broadcast, pthread_cond_broadcast,
  95                   GLIBC_2_3_2);
  96
  97 #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2)
  98 FORWARD (__pthread_cond_destroy_2_0, (pthread_cond_2_0_t *cond), (cond), 0)
  99 compat_symbol (libc, __pthread_cond_destroy_2_0, pthread_cond_destroy,
 100                GLIBC_2_0);
 101 #endif
 102 FORWARD (__pthread_cond_destroy, (pthread_cond_t *cond), (cond), 0)
 103 versioned_symbol (libc, __pthread_cond_destroy, pthread_cond_destroy,
 104                   GLIBC_2_3_2);
 105
 106 #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2)
 107 FORWARD (__pthread_cond_init_2_0,
 108          (pthread_cond_2_0_t *cond, const pthread_condattr_t *cond_attr),
 109          (cond, cond_attr), 0)
 110 compat_symbol (libc, __pthread_cond_init_2_0, pthread_cond_init, GLIBC_2_0);
 111 #endif
 112 FORWARD (__pthread_cond_init,
 113          (pthread_cond_t *cond, const pthread_condattr_t *cond_attr),
 114          (cond, cond_attr), 0)
 115 versioned_symbol (libc, __pthread_cond_init, pthread_cond_init, GLIBC_2_3_2);
 116
 117 #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2)
 118 FORWARD (__pthread_cond_signal_2_0, (pthread_cond_2_0_t *cond), (cond), 0)
 119 compat_symbol (libc, __pthread_cond_signal_2_0, pthread_cond_signal,
 120                GLIBC_2_0);
 121 #endif
 122 FORWARD (__pthread_cond_signal, (pthread_cond_t *cond), (cond), 0)
 123 versioned_symbol (libc, __pthread_cond_signal, pthread_cond_signal,
 124                   GLIBC_2_3_2);
 125
 126 #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2)
 127 FORWARD (__pthread_cond_wait_2_0,
 128          (pthread_cond_2_0_t *cond, pthread_mutex_t *mutex), (cond, mutex), 0)
 129 compat_symbol (libc, __pthread_cond_wait_2_0, pthread_cond_wait,
 130                GLIBC_2_0);
 131 #endif
 132 FORWARD (__pthread_cond_wait, (pthread_cond_t *cond, pthread_mutex_t *mutex),
 133          (cond, mutex), 0)
 134 versioned_symbol (libc, __pthread_cond_wait, pthread_cond_wait,
 135                   GLIBC_2_3_2);
 136
 137
 138 FORWARD (pthread_equal, (pthread_t thread1, pthread_t thread2),
 139          (thread1, thread2), 1)
 140
 141
 142 /* Use an alias to avoid warning, as pthread_exit is declared noreturn.  */
 143 FORWARD2 (__pthread_exit, void, (void *retval), (retval), exit (EXIT_SUCCESS))
 144 strong_alias (__pthread_exit, pthread_exit);
 145
 146
 147 FORWARD (pthread_getschedparam,
 148          (pthread_t target_thread, int *policy, struct sched_param *param),
 149          (target_thread, policy, param), 0)
 150 FORWARD (pthread_setschedparam,
 151          (pthread_t target_thread, int policy,
 152           const struct sched_param *param), (target_thread, policy, param), 0)
 153
 154
 155 FORWARD (pthread_mutex_destroy, (pthread_mutex_t *mutex), (mutex), 0)
 156
 157 FORWARD (pthread_mutex_init,
 158          (pthread_mutex_t *mutex, const pthread_mutexattr_t *mutexattr),
 159          (mutex, mutexattr), 0)
 160
 161 FORWARD (pthread_mutex_lock, (pthread_mutex_t *mutex), (mutex), 0)
 162
 163 FORWARD (pthread_mutex_unlock, (pthread_mutex_t *mutex), (mutex), 0)
 164
 165
 166 FORWARD2 (pthread_self, pthread_t, (void), (), return 0)
 167
 168
 169 FORWARD (pthread_setcancelstate, (int state, int *oldstate), (state, oldstate),
 170          0)
 171
 172 FORWARD (pthread_setcanceltype, (int type, int *oldtype), (type, oldtype), 0)