herrno-loc.c 1.3 KB

12345678910111213141516171819202122232425262728293031323334353637383940414243
  1. /* Copyright (C) 1996, 97, 98, 2002, 2003 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, write to the Free
  13. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  14. 02111-1307 USA. */
  15. #include <netdb.h>
  16. #include <tls.h>
  17. #include <linuxthreads/internals.h>
  18. #include <sysdep-cancel.h>
  19. #if ! USE___THREAD
  20. # undef h_errno
  21. extern int h_errno;
  22. #endif
  23. /* When threaded, h_errno may be a per-thread variable. */
  24. int *
  25. weak_const_function
  26. __h_errno_location (void)
  27. {
  28. #if ! USE___THREAD
  29. if (! SINGLE_THREAD_P)
  30. {
  31. pthread_descr self = thread_self();
  32. return LIBC_THREAD_GETMEM (self, p_h_errnop);
  33. }
  34. #endif
  35. return &h_errno;
  36. }
  37. libc_hidden_def (__h_errno_location)