nptl/forward.c

   1 /* Copyright (C) 2002, 2003, 2004, 2007 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 <signal.h>
  23 #include <stdlib.h>
  24
  25 #include <shlib-compat.h>
  26 #include <atomic.h>
  27 #include <sysdep.h>
  28
  29
  30 /* Pointers to the libc functions.  */
  31 struct pthread_functions __libc_pthread_functions attribute_hidden;
  32 int __libc_pthread_functions_init attribute_hidden;
  33
  34
  35 #define FORWARD2(name, rettype, decl, params, defaction) \
  36 rettype                                                                       \
  37 name decl                                                                     \
  38 {                                                                             \
  39   if (!__libc_pthread_functions_init)                                         \
  40     defaction;                                                                \
  41                                                                               \
  42   return PTHFCT_CALL (ptr_##name, params);                                    \
  43 }
  44
  45 #define FORWARD(name, decl, params, defretval) \
  46   FORWARD2 (name, int, decl, params, return defretval)
  47
  48
  49 FORWARD (pthread_attr_destroy, (pthread_attr_t *attr), (attr), 0)
  50
  51 #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_1)
  52 FORWARD (__pthread_attr_init_2_0, (pthread_attr_t *attr), (attr), 0)
  53 compat_symbol (libc, __pthread_attr_init_2_0, pthread_attr_init, GLIBC_2_0);
  54 #endif
  55
  56 FORWARD (__pthread_attr_init_2_1, (pthread_attr_t *attr), (attr), 0)
  57 versioned_symbol (libc, __pthread_attr_init_2_1, pthread_attr_init, GLIBC_2_1);
  58
  59 FORWARD (pthread_attr_getdetachstate,
  60          (const pthread_attr_t *attr, int *detachstate), (attr, detachstate),
  61          0)
  62 FORWARD (pthread_attr_setdetachstate, (pthread_attr_t *attr, int detachstate),
  63          (attr, detachstate), 0)
  64
  65 FORWARD (pthread_attr_getinheritsched,
  66          (const pthread_attr_t *attr, int *inherit), (attr, inherit), 0)
  67 FORWARD (pthread_attr_setinheritsched, (pthread_attr_t *attr, int inherit),
  68          (attr, inherit), 0)
  69
  70 FORWARD (pthread_attr_getschedparam,
  71          (const pthread_attr_t *attr, struct sched_param *param),
  72          (attr, param), 0)
  73 FORWARD (pthread_attr_setschedparam,
  74          (pthread_attr_t *attr, const struct sched_param *param),
  75          (attr, param), 0)
  76
  77 FORWARD (pthread_attr_getschedpolicy,
  78          (const pthread_attr_t *attr, int *policy), (attr, policy), 0)
  79 FORWARD (pthread_attr_setschedpolicy, (pthread_attr_t *attr, int policy),
  80          (attr, policy), 0)
  81
  82 FORWARD (pthread_attr_getscope,
  83          (const pthread_attr_t *attr, int *scope), (attr, scope), 0)
  84 FORWARD (pthread_attr_setscope, (pthread_attr_t *attr, int scope),
  85          (attr, scope), 0)
  86
  87
  88 FORWARD (pthread_condattr_destroy, (pthread_condattr_t *attr), (attr), 0)
  89 FORWARD (pthread_condattr_init, (pthread_condattr_t *attr), (attr), 0)
  90
  91 #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2)
  92 FORWARD2 (__pthread_cond_broadcast_2_0, int attribute_compat_text_section,
  93           (pthread_cond_2_0_t *cond), (cond), return 0)
  94 compat_symbol (libc, __pthread_cond_broadcast_2_0, pthread_cond_broadcast,
  95                GLIBC_2_0);
  96 #endif
  97 FORWARD (__pthread_cond_broadcast, (pthread_cond_t *cond), (cond), 0)
  98 versioned_symbol (libc, __pthread_cond_broadcast, pthread_cond_broadcast,
  99                   GLIBC_2_3_2);
 100
 101 #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2)
 102 FORWARD2 (__pthread_cond_destroy_2_0, int attribute_compat_text_section,
 103           (pthread_cond_2_0_t *cond), (cond), return 0)
 104 compat_symbol (libc, __pthread_cond_destroy_2_0, pthread_cond_destroy,
 105                GLIBC_2_0);
 106 #endif
 107 FORWARD (__pthread_cond_destroy, (pthread_cond_t *cond), (cond), 0)
 108 versioned_symbol (libc, __pthread_cond_destroy, pthread_cond_destroy,
 109                   GLIBC_2_3_2);
 110
 111 #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2)
 112 FORWARD2 (__pthread_cond_init_2_0, int attribute_compat_text_section,
 113           (pthread_cond_2_0_t *cond, const pthread_condattr_t *cond_attr),
 114           (cond, cond_attr), return 0)
 115 compat_symbol (libc, __pthread_cond_init_2_0, pthread_cond_init, GLIBC_2_0);
 116 #endif
 117 FORWARD (__pthread_cond_init,
 118          (pthread_cond_t *cond, const pthread_condattr_t *cond_attr),
 119          (cond, cond_attr), 0)
 120 versioned_symbol (libc, __pthread_cond_init, pthread_cond_init, GLIBC_2_3_2);
 121
 122 #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2)
 123 FORWARD2 (__pthread_cond_signal_2_0, int attribute_compat_text_section,
 124           (pthread_cond_2_0_t *cond), (cond), return 0)
 125 compat_symbol (libc, __pthread_cond_signal_2_0, pthread_cond_signal,
 126                GLIBC_2_0);
 127 #endif
 128 FORWARD (__pthread_cond_signal, (pthread_cond_t *cond), (cond), 0)
 129 versioned_symbol (libc, __pthread_cond_signal, pthread_cond_signal,
 130                   GLIBC_2_3_2);
 131
 132 #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2)
 133 FORWARD2 (__pthread_cond_wait_2_0, int attribute_compat_text_section,
 134           (pthread_cond_2_0_t *cond, pthread_mutex_t *mutex), (cond, mutex),
 135           return 0)
 136 compat_symbol (libc, __pthread_cond_wait_2_0, pthread_cond_wait,
 137                GLIBC_2_0);
 138 #endif
 139 FORWARD (__pthread_cond_wait, (pthread_cond_t *cond, pthread_mutex_t *mutex),
 140          (cond, mutex), 0)
 141 versioned_symbol (libc, __pthread_cond_wait, pthread_cond_wait,
 142                   GLIBC_2_3_2);
 143
 144 #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2)
 145 FORWARD2 (__pthread_cond_timedwait_2_0, int attribute_compat_text_section,
 146           (pthread_cond_2_0_t *cond, pthread_mutex_t *mutex,
 147            const struct timespec *abstime), (cond, mutex, abstime),
 148           return 0)
 149 compat_symbol (libc, __pthread_cond_timedwait_2_0, pthread_cond_timedwait,
 150                GLIBC_2_0);
 151 #endif
 152 FORWARD (__pthread_cond_timedwait,
 153          (pthread_cond_t *cond, pthread_mutex_t *mutex,
 154           const struct timespec *abstime), (cond, mutex, abstime), 0)
 155 versioned_symbol (libc, __pthread_cond_timedwait, pthread_cond_timedwait,
 156                   GLIBC_2_3_2);
 157
 158
 159 FORWARD (pthread_equal, (pthread_t thread1, pthread_t thread2),
 160          (thread1, thread2), 1)
 161
 162
 163 /* Use an alias to avoid warning, as pthread_exit is declared noreturn.  */
 164 FORWARD2 (__pthread_exit, void, (void *retval), (retval), exit (EXIT_SUCCESS))
 165 strong_alias (__pthread_exit, pthread_exit);
 166
 167
 168 FORWARD (pthread_getschedparam,
 169          (pthread_t target_thread, int *policy, struct sched_param *param),
 170          (target_thread, policy, param), 0)
 171 FORWARD (pthread_setschedparam,
 172          (pthread_t target_thread, int policy,
 173           const struct sched_param *param), (target_thread, policy, param), 0)
 174
 175
 176 FORWARD (pthread_mutex_destroy, (pthread_mutex_t *mutex), (mutex), 0)
 177
 178 FORWARD (pthread_mutex_init,
 179          (pthread_mutex_t *mutex, const pthread_mutexattr_t *mutexattr),
 180          (mutex, mutexattr), 0)
 181
 182 FORWARD (pthread_mutex_lock, (pthread_mutex_t *mutex), (mutex), 0)
 183
 184 FORWARD (pthread_mutex_unlock, (pthread_mutex_t *mutex), (mutex), 0)
 185
 186
 187 FORWARD2 (pthread_self, pthread_t, (void), (), return 0)
 188
 189
 190 FORWARD (pthread_setcancelstate, (int state, int *oldstate), (state, oldstate),
 191          0)
 192
 193 FORWARD (pthread_setcanceltype, (int type, int *oldtype), (type, oldtype), 0)
 194
 195 #define return /* value is void */
 196 FORWARD2(__pthread_unwind,
 197          void attribute_hidden __attribute ((noreturn)) __cleanup_fct_attribute
 198          attribute_compat_text_section,
 199          (__pthread_unwind_buf_t *buf), (buf), {
 200                        /* We cannot call abort() here.  */
 201                        INTERNAL_SYSCALL_DECL (err);
 202                        INTERNAL_SYSCALL (kill, err, 1, SIGKILL);
 203                      })
 204 #undef return