linuxthreads/weaks.c

   1 /* The weak pthread functions for Linux.
   2    Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    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    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #include <errno.h>
  21 #include <limits.h>
  22 #include <stdlib.h>
  23
  24 extern int __pthread_return_0 __P ((void));
  25 extern int __pthread_return_1 __P ((void));
  26 extern void __pthread_return_void __P ((void));
  27
  28 /* Those are pthread functions which return 0 if successful. */
  29 #if defined HAVE_ELF && defined PIC && defined DO_VERSIONING
  30 weak_alias (__pthread_return_0, __libc_pthread_attr_init_2_0)
  31 symbol_version (__libc_pthread_attr_init_2_0, pthread_attr_init, GLIBC_2.0);
  32 weak_alias (__pthread_return_0, __libc_pthread_attr_init_2_1)
  33 default_symbol_version (__libc_pthread_attr_init_2_1, pthread_attr_init,
  34                         GLIBC_2.1);
  35 #else
  36 weak_alias (__pthread_return_0, pthread_attr_init)
  37 #endif
  38 weak_alias (__pthread_return_0, pthread_attr_destroy)
  39 weak_alias (__pthread_return_0, pthread_attr_setdetachstate)
  40 weak_alias (__pthread_return_0, pthread_attr_getdetachstate)
  41 weak_alias (__pthread_return_0, pthread_attr_setschedparam)
  42 weak_alias (__pthread_return_0, pthread_attr_getschedparam)
  43 weak_alias (__pthread_return_0, pthread_attr_setschedpolicy)
  44 weak_alias (__pthread_return_0, pthread_attr_getschedpolicy)
  45 weak_alias (__pthread_return_0, pthread_attr_setinheritsched)
  46 weak_alias (__pthread_return_0, pthread_attr_getinheritsched)
  47 weak_alias (__pthread_return_0, pthread_attr_setscope)
  48 weak_alias (__pthread_return_0, pthread_attr_getscope)
  49 weak_alias (__pthread_return_0, pthread_attr_setstackaddr)
  50 weak_alias (__pthread_return_0, pthread_attr_getstackaddr)
  51 weak_alias (__pthread_return_0, pthread_attr_setstacksize)
  52 weak_alias (__pthread_return_0, pthread_attr_getstacksize)
  53 weak_alias (__pthread_return_0, pthread_mutex_init)
  54 weak_alias (__pthread_return_0, pthread_mutex_destroy)
  55 weak_alias (__pthread_return_0, pthread_mutex_lock)
  56 weak_alias (__pthread_return_0, pthread_mutex_trylock)
  57 weak_alias (__pthread_return_0, pthread_mutex_unlock)
  58 weak_alias (__pthread_return_0, pthread_mutexattr_init)
  59 weak_alias (__pthread_return_0, pthread_mutexattr_destroy)
  60 weak_alias (__pthread_return_0, pthread_mutexattr_settype)
  61 weak_alias (__pthread_return_0, pthread_mutexattr_gettype)
  62 weak_alias (__pthread_return_0, pthread_condattr_init)
  63 weak_alias (__pthread_return_0, pthread_condattr_destroy)
  64 weak_alias (__pthread_return_0, pthread_setschedparam)
  65 weak_alias (__pthread_return_0, pthread_getschedparam)
  66 weak_alias (__pthread_return_0, pthread_getcancelstate)
  67 weak_alias (__pthread_return_0, pthread_setcancelstate)
  68 weak_alias (__pthread_return_0, pthread_setcanceltype)
  69 weak_alias (__pthread_return_0, pthread_setconcurrency)
  70 weak_alias (__pthread_return_0, pthread_getconcurrency)
  71 weak_alias (__pthread_return_0, pthread_self)
  72 weak_alias (__pthread_return_0, pthread_cond_init)
  73 weak_alias (__pthread_return_0, pthread_cond_destroy)
  74 weak_alias (__pthread_return_0, pthread_cond_wait)
  75 weak_alias (__pthread_return_0, pthread_cond_timedwait)
  76 weak_alias (__pthread_return_0, pthread_cond_signal)
  77 weak_alias (__pthread_return_0, pthread_cond_broadcast)
  78 weak_alias (__pthread_return_0, pthread_rwlock_init)
  79 weak_alias (__pthread_return_0, pthread_rwlock_destroy)
  80 weak_alias (__pthread_return_0, pthread_rwlock_rdlock)
  81 weak_alias (__pthread_return_0, pthread_rwlock_wrlock)
  82 weak_alias (__pthread_return_0, pthread_rwlock_tryrdlock)
  83 weak_alias (__pthread_return_0, pthread_rwlock_trywrlock)
  84 weak_alias (__pthread_return_0, pthread_rwlock_unlock)
  85 weak_alias (__pthread_return_0, pthread_rwlockattr_init)
  86 weak_alias (__pthread_return_0, pthread_rwlockattr_destroy)
  87 weak_alias (__pthread_return_0, pthread_rwlockattr_setpshared)
  88 weak_alias (__pthread_return_0, pthread_rwlockattr_getpshared)
  89
  90
  91 /* Those are pthread functions which return 1 if successful. */
  92 weak_alias (__pthread_return_1, pthread_equal)
  93
  94 /* pthread_exit () is a special case. */
  95 void
  96 weak_function
  97 pthread_exit (void *retval)
  98 {
  99   exit (EXIT_SUCCESS);
 100 }
 101
 102 int
 103 __pthread_return_0 (void)
 104 {
 105   return 0;
 106 }
 107
 108 int
 109 __pthread_return_1 (void)
 110 {
 111   return 1;
 112 }
 113
 114 void
 115 __pthread_return_void (void)
 116 {
 117 }