linuxthreads/weaks.c

   1 /* The weak pthread functions for Linux.
   2    Copyright (C) 1996,1997,1998,1999,2000,2001 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 #include <shlib-compat.h>
  24 #include <bp-sym.h>
  25
  26 extern int __pthread_return_0 (void);
  27 extern int __pthread_return_1 (void);
  28 extern void __pthread_return_void (void);
  29 extern void weak_function pthread_exit (void *__retval)
  30      __attribute__ ((noreturn));
  31
  32 /* Those are pthread functions which return 0 if successful. */
  33 weak_alias (__pthread_return_0, BP_SYM (__libc_pthread_attr_init_2_1))
  34 versioned_symbol (libpthread, BP_SYM (__libc_pthread_attr_init_2_1),
  35                   BP_SYM (pthread_attr_init), GLIBC_2_1);
  36 #if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
  37 weak_alias (__pthread_return_0, BP_SYM (__libc_pthread_attr_init_2_0))
  38 compat_symbol (libpthread, BP_SYM (__libc_pthread_attr_init_2_0),
  39                BP_SYM (pthread_attr_init), GLIBC_2_0);
  40 #endif
  41 weak_alias (__pthread_return_0, BP_SYM (pthread_attr_destroy))
  42 weak_alias (__pthread_return_0, BP_SYM (pthread_attr_setdetachstate))
  43 weak_alias (__pthread_return_0, BP_SYM (pthread_attr_getdetachstate))
  44 weak_alias (__pthread_return_0, BP_SYM (pthread_attr_setschedparam))
  45 weak_alias (__pthread_return_0, BP_SYM (pthread_attr_getschedparam))
  46 weak_alias (__pthread_return_0, BP_SYM (pthread_attr_setschedpolicy))
  47 weak_alias (__pthread_return_0, BP_SYM (pthread_attr_getschedpolicy))
  48 weak_alias (__pthread_return_0, BP_SYM (pthread_attr_setinheritsched))
  49 weak_alias (__pthread_return_0, BP_SYM (pthread_attr_getinheritsched))
  50 weak_alias (__pthread_return_0, BP_SYM (pthread_attr_setscope))
  51 weak_alias (__pthread_return_0, BP_SYM (pthread_attr_getscope))
  52 weak_alias (__pthread_return_0, BP_SYM (pthread_attr_setstackaddr))
  53 weak_alias (__pthread_return_0, BP_SYM (pthread_attr_getstackaddr))
  54 weak_alias (__pthread_return_0, BP_SYM (pthread_attr_setstacksize))
  55 weak_alias (__pthread_return_0, BP_SYM (pthread_attr_getstacksize))
  56 weak_alias (__pthread_return_0, BP_SYM (pthread_mutex_init))
  57 weak_alias (__pthread_return_0, BP_SYM (pthread_mutex_destroy))
  58 weak_alias (__pthread_return_0, BP_SYM (pthread_mutex_lock))
  59 weak_alias (__pthread_return_0, BP_SYM (pthread_mutex_trylock))
  60 weak_alias (__pthread_return_0, BP_SYM (pthread_mutex_unlock))
  61 weak_alias (__pthread_return_0, BP_SYM (pthread_mutexattr_init))
  62 weak_alias (__pthread_return_0, BP_SYM (pthread_mutexattr_destroy))
  63 weak_alias (__pthread_return_0, BP_SYM (pthread_mutexattr_settype))
  64 weak_alias (__pthread_return_0, BP_SYM (pthread_mutexattr_gettype))
  65 weak_alias (__pthread_return_0, BP_SYM (pthread_condattr_init))
  66 weak_alias (__pthread_return_0, BP_SYM (pthread_condattr_destroy))
  67 weak_alias (__pthread_return_0, BP_SYM (pthread_setschedparam))
  68 weak_alias (__pthread_return_0, BP_SYM (pthread_getschedparam))
  69 weak_alias (__pthread_return_0, BP_SYM (pthread_getcancelstate))
  70 weak_alias (__pthread_return_0, BP_SYM (pthread_setcancelstate))
  71 weak_alias (__pthread_return_0, BP_SYM (pthread_setcanceltype))
  72 weak_alias (__pthread_return_0, pthread_setconcurrency)
  73 weak_alias (__pthread_return_0, pthread_getconcurrency)
  74 weak_alias (__pthread_return_0, pthread_self)
  75 weak_alias (__pthread_return_0, BP_SYM (pthread_cond_init))
  76 weak_alias (__pthread_return_0, BP_SYM (pthread_cond_destroy))
  77 weak_alias (__pthread_return_0, BP_SYM (pthread_cond_wait))
  78 weak_alias (__pthread_return_0, BP_SYM (pthread_cond_timedwait))
  79 weak_alias (__pthread_return_0, BP_SYM (pthread_cond_signal))
  80 weak_alias (__pthread_return_0, BP_SYM (pthread_cond_broadcast))
  81 weak_alias (__pthread_return_0, BP_SYM (pthread_rwlock_init))
  82 weak_alias (__pthread_return_0, BP_SYM (pthread_rwlock_destroy))
  83 weak_alias (__pthread_return_0, BP_SYM (pthread_rwlock_rdlock))
  84 weak_alias (__pthread_return_0, BP_SYM (pthread_rwlock_wrlock))
  85 weak_alias (__pthread_return_0, BP_SYM (pthread_rwlock_tryrdlock))
  86 weak_alias (__pthread_return_0, BP_SYM (pthread_rwlock_trywrlock))
  87 weak_alias (__pthread_return_0, BP_SYM (pthread_rwlock_unlock))
  88 weak_alias (__pthread_return_0, BP_SYM (pthread_rwlockattr_init))
  89 weak_alias (__pthread_return_0, BP_SYM (pthread_rwlockattr_destroy))
  90 weak_alias (__pthread_return_0, BP_SYM (pthread_rwlockattr_setpshared))
  91 weak_alias (__pthread_return_0, BP_SYM (pthread_rwlockattr_getpshared))
  92
  93
  94 /* Those are pthread functions which return 1 if successful. */
  95 weak_alias (__pthread_return_1, pthread_equal)
  96
  97 /* pthread_exit () is a special case. */
  98 void
  99 weak_function
 100 pthread_exit (void *retval)
 101 {
 102   exit (EXIT_SUCCESS);
 103 }
 104
 105 int
 106 __pthread_return_0 (void)
 107 {
 108   return 0;
 109 }
 110
 111 int
 112 __pthread_return_1 (void)
 113 {
 114   return 1;
 115 }
 116
 117 void
 118 __pthread_return_void (void)
 119 {
 120 }