nptl/forward.c

   1 /* Copyright (C) 2002 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 <pthread.h>
  22 #include <stdlib.h>
  23
  24 #include <shlib-compat.h>
  25
  26
  27 #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2)
  28 static void *libpthread_handle;
  29
  30
  31 static void
  32 test_loaded (void)
  33 {
  34   void *h = __libc_dlopen_mode ("libpthread.so.0", RTLD_LAZY | RTLD_NOLOAD);
  35
  36   libpthread_handle = h ?: (void *) -1l;
  37 }
  38
  39
  40 #define FORWARD3(name, rettype, decl, params, defaction, version) \
  41 rettype                                                                       \
  42 __noexport_##name decl                                                        \
  43 {                                                                             \
  44   if (libpthread_handle == NULL)                                              \
  45     test_loaded ();                                                           \
  46                                                                               \
  47   if (libpthread_handle == (void *) -1l)                                      \
  48     defaction;                                                                \
  49                                                                               \
  50   static __typeof (name) *p;                                                  \
  51   p = __libc_dlsym (libpthread_handle, #name);                                \
  52                                                                               \
  53   return p params;                                                            \
  54 }                                                                             \
  55 compat_symbol (libc, __noexport_##name, name, version)
  56
  57 #define FORWARD2(name, decl, params, defretval, version) \
  58   FORWARD3 (name, int, decl, params, return defretval, version)
  59
  60 #define FORWARD(name, decl, params, defretval) \
  61   FORWARD2 (name, decl, params, defretval, GLIBC_2_0)
  62
  63
  64 FORWARD (pthread_attr_destroy, (pthread_attr_t *attr), (attr), 0);
  65
  66 FORWARD2 (pthread_attr_init, (pthread_attr_t *attr), (attr), 0, GLIBC_2_1);
  67
  68 FORWARD (pthread_attr_getdetachstate,
  69          (const pthread_attr_t *attr, int *detachstate), (attr, detachstate),
  70          0);
  71 FORWARD (pthread_attr_setdetachstate, (pthread_attr_t *attr, int detachstate),
  72          (attr, detachstate), 0);
  73
  74 FORWARD (pthread_attr_getinheritsched,
  75          (const pthread_attr_t *attr, int *inherit), (attr, inherit), 0);
  76 FORWARD (pthread_attr_setinheritsched, (pthread_attr_t *attr, int inherit),
  77          (attr, inherit), 0);
  78
  79 FORWARD (pthread_attr_getschedparam,
  80          (const pthread_attr_t *attr, struct sched_param *param),
  81          (attr, param), 0);
  82 FORWARD (pthread_attr_setschedparam,
  83          (pthread_attr_t *attr, const struct sched_param *param),
  84          (attr, param), 0);
  85
  86 FORWARD (pthread_attr_getschedpolicy,
  87          (const pthread_attr_t *attr, int *policy), (attr, policy), 0);
  88 FORWARD (pthread_attr_setschedpolicy, (pthread_attr_t *attr, int policy),
  89          (attr, policy), 0);
  90
  91 FORWARD (pthread_attr_getscope,
  92          (const pthread_attr_t *attr, int *scope), (attr, scope), 0);
  93 FORWARD (pthread_attr_setscope, (pthread_attr_t *attr, int scope),
  94          (attr, scope), 0);
  95
  96
  97 FORWARD (pthread_condattr_destroy, (pthread_condattr_t *attr), (attr), 0);
  98 FORWARD (pthread_condattr_init, (pthread_condattr_t *attr), (attr), 0);
  99
 100
 101 FORWARD (pthread_cond_broadcast, (pthread_cond_t *cond), (cond), 0);
 102
 103 FORWARD (pthread_cond_destroy, (pthread_cond_t *cond), (cond), 0);
 104
 105 FORWARD (pthread_cond_init,
 106          (pthread_cond_t *cond, const pthread_condattr_t *cond_attr),
 107          (cond, cond_attr), 0);
 108
 109 FORWARD (pthread_cond_signal, (pthread_cond_t *cond), (cond), 0);
 110
 111 FORWARD (pthread_cond_wait, (pthread_cond_t *cond, pthread_mutex_t *mutex),
 112          (cond, mutex), 0);
 113
 114
 115 FORWARD (pthread_equal, (pthread_t thread1, pthread_t thread2),
 116          (thread1, thread2), 1);
 117
 118
 119 FORWARD3 (pthread_exit, void, (void *retval), (retval), exit (EXIT_SUCCESS),
 120           GLIBC_2_0);
 121
 122
 123 FORWARD (pthread_getschedparam,
 124          (pthread_t target_thread, int *policy, struct sched_param *param),
 125          (target_thread, policy, param), 0);
 126 FORWARD (pthread_setschedparam,
 127          (pthread_t target_thread, int policy,
 128           const struct sched_param *param), (target_thread, policy, param), 0);
 129
 130
 131 FORWARD (pthread_mutex_destroy, (pthread_mutex_t *mutex), (mutex), 0);
 132
 133 FORWARD (pthread_mutex_init,
 134          (pthread_mutex_t *mutex, const pthread_mutexattr_t *mutexattr),
 135          (mutex, mutexattr), 0);
 136
 137 FORWARD (pthread_mutex_lock, (pthread_mutex_t *mutex), (mutex), 0);
 138
 139 FORWARD (pthread_mutex_unlock, (pthread_mutex_t *mutex), (mutex), 0);
 140
 141
 142 FORWARD (pthread_self, (void), (), 0);
 143
 144
 145 FORWARD (pthread_setcancelstate, (int state, int *oldstate), (state, oldstate),
 146          0);
 147
 148 FORWARD (pthread_setcanceltype, (int type, int *oldtype), (type, oldtype), 0);
 149
 150
 151 #endif