sysdep-cancel.h 1.6 KB

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  1. /* Copyright (C) 2003, 2006 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; if not, see
  13. <http://www.gnu.org/licenses/>. */
  14. #include <sysdep.h>
  15. #include <tls.h>
  16. #ifndef __ASSEMBLER__
  17. # include <nptl/pthreadP.h>
  18. #endif
  19. #if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
  20. # ifdef IS_IN_libpthread
  21. # define __local_multiple_threads __pthread_multiple_threads
  22. # elif !defined NOT_IN_libc
  23. # define __local_multiple_threads __libc_multiple_threads
  24. # endif
  25. # if defined IS_IN_libpthread || !defined NOT_IN_libc
  26. extern int __local_multiple_threads attribute_hidden;
  27. # define SINGLE_THREAD_P \
  28. __builtin_expect (__local_multiple_threads == 0, 1)
  29. # else
  30. # define SINGLE_THREAD_P \
  31. __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
  32. header.multiple_threads) == 0, 1)
  33. # endif
  34. #else
  35. # define SINGLE_THREAD_P (1)
  36. # define NO_CANCELLATION 1
  37. #endif
  38. #define RTLD_SINGLE_THREAD_P \
  39. __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
  40. header.multiple_threads) == 0, 1)