linuxthreads/no-tsd.c

   1 /* libc-internal interface for thread-specific data.
   2    Copyright (C) 1998,99,2002 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 Lesser General Public License as
   7    published by the Free Software Foundation; either version 2.1 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    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; 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 <sys/cdefs.h>  /* for __const */
  21 #include <bits/libc-tsd.h>
  22
  23 #if !(USE_TLS && HAVE___THREAD)
  24
  25 /* This file provides uinitialized (common) definitions for the
  26    hooks used internally by libc to access thread-specific data.
  27
  28    When -lpthread is used, it provides initialized definitions for these
  29    variables (in specific.c), which override these uninitialized definitions.
  30
  31    If -lpthread is not used, these uninitialized variables default to zero,
  32    which the __libc_tsd_* macros check for.   */
  33
  34 void *(*__libc_internal_tsd_get) (enum __libc_tsd_key_t);
  35 int (*__libc_internal_tsd_set) (enum __libc_tsd_key_t,
  36                                 __const void *);
  37 void **(*__libc_internal_tsd_address) (enum __libc_tsd_key_t)
  38      __THROW __attribute__ ((__const__));
  39
  40 #endif /* !(USE_TLS && HAVE___THREAD) */