resolv/res-state.c

   1 /* Copyright (C) 1996, 97, 98, 2002, 2003 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <resolv.h>
  20 #include <tls.h>
  21
  22 #if ! USE___THREAD
  23
  24 # undef _res
  25 extern struct __res_state _res;
  26
  27 /* When threaded, _res may be a per-thread variable.  */
  28 struct __res_state *
  29 weak_const_function
  30 __res_state (void)
  31 {
  32   return &_res;
  33 }
  34
  35 #else
  36
  37 struct __res_state *
  38 __res_state (void)
  39 {
  40   return __resp;
  41 }
  42
  43 #endif
  44
  45 libc_hidden_def (__res_state)