libc-tsd.h 1.8 KB

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  1. /* libc-internal interface for thread-specific data. LinuxThreads version.
  2. Copyright (C) 1997, 1998, 1999, 2001 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  4. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Library General Public License as
  6. published by the Free Software Foundation; either version 2 of the
  7. License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Library General Public License for more details.
  12. You should have received a copy of the GNU Library General Public
  13. License along with the GNU C Library; see the file COPYING.LIB. If not,
  14. write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  15. Boston, MA 02111-1307, USA. */
  16. #ifndef _BITS_LIBC_TSD_H
  17. #define _BITS_LIBC_TSD_H 1
  18. #include <features.h>
  19. /* Fast thread-specific data internal to libc. */
  20. enum __libc_tsd_key_t { _LIBC_TSD_KEY_MALLOC = 0,
  21. _LIBC_TSD_KEY_DL_ERROR,
  22. _LIBC_TSD_KEY_RPC_VARS,
  23. _LIBC_TSD_KEY_N };
  24. extern void *(*__libc_internal_tsd_get) (enum __libc_tsd_key_t) __THROW;
  25. extern int (*__libc_internal_tsd_set) (enum __libc_tsd_key_t,
  26. __const void *) __THROW;
  27. #define __libc_tsd_define(CLASS, KEY) CLASS void *__libc_tsd_##KEY##_data;
  28. #define __libc_tsd_get(KEY) \
  29. (__libc_internal_tsd_get != NULL \
  30. ? __libc_internal_tsd_get (_LIBC_TSD_KEY_##KEY) \
  31. : __libc_tsd_##KEY##_data)
  32. #define __libc_tsd_set(KEY, VALUE) \
  33. (__libc_internal_tsd_set != NULL \
  34. ? __libc_internal_tsd_set (_LIBC_TSD_KEY_##KEY, (VALUE)) \
  35. : ((__libc_tsd_##KEY##_data = (VALUE)), 0))
  36. #endif /* bits/libc-tsd.h */