libc-tsd.h 2.5 KB

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  1. /* libc-internal interface for thread-specific data. LinuxThreads version.
  2. Copyright (C) 1997-2002, 2003 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 Lesser General Public License as
  6. published by the Free Software Foundation; either version 2.1 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. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser 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 <libc-internal.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_LOCALE,
  24. _LIBC_TSD_KEY_CTYPE_B,
  25. _LIBC_TSD_KEY_CTYPE_TOLOWER,
  26. _LIBC_TSD_KEY_CTYPE_TOUPPER,
  27. _LIBC_TSD_KEY_N };
  28. #include <sys/cdefs.h>
  29. #include <tls.h>
  30. #include <linuxthreads.old/internals.h>
  31. #if defined(USE_TLS) && USE_TLS && HAVE___THREAD
  32. /* When __thread works, the generic definition is what we want. */
  33. # include <sysdeps/generic/bits/libc-tsd.h>
  34. #else
  35. # include <bits/libc-lock.h>
  36. # ifndef SHARED
  37. extern void ** __pthread_internal_tsd_address (int);
  38. extern void *__pthread_internal_tsd_get (int);
  39. extern int __pthread_internal_tsd_set (int, const void *);
  40. weak_extern (__pthread_internal_tsd_address)
  41. weak_extern (__pthread_internal_tsd_get)
  42. weak_extern (__pthread_internal_tsd_set)
  43. # endif
  44. #define __libc_tsd_define(CLASS, KEY) CLASS void *__libc_tsd_##KEY##_data;
  45. #define __libc_tsd_address(KEY) \
  46. __libc_maybe_call2 (pthread_internal_tsd_address, \
  47. (_LIBC_TSD_KEY_##KEY), &__libc_tsd_##KEY##_data)
  48. #define __libc_tsd_get(KEY) \
  49. __libc_maybe_call2 (pthread_internal_tsd_get, \
  50. (_LIBC_TSD_KEY_##KEY), __libc_tsd_##KEY##_data)
  51. #define __libc_tsd_set(KEY, VALUE) \
  52. __libc_maybe_call2 (pthread_internal_tsd_set, \
  53. (_LIBC_TSD_KEY_##KEY, (VALUE)), \
  54. (__libc_tsd_##KEY##_data = (VALUE), 0))
  55. #endif
  56. #endif /* bits/libc-tsd.h */