libc_pthread_init.c 1.6 KB

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  1. /* Copyright (C) 2002,2003,2005,2006,2007,2009 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
  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
  6. License as published by the Free Software Foundation; either
  7. version 2.1 of the 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; if not, see
  14. <http://www.gnu.org/licenses/>. */
  15. #include <unistd.h>
  16. #include <list.h>
  17. #include <fork.h>
  18. #include <dl-sysdep.h>
  19. #include <tls.h>
  20. #include <string.h>
  21. #include <pthreadP.h>
  22. #include <bits/libc-lock.h>
  23. #include <sysdep.h>
  24. #include <ldsodefs.h>
  25. #ifdef TLS_MULTIPLE_THREADS_IN_TCB
  26. void
  27. #else
  28. extern int __libc_multiple_threads attribute_hidden;
  29. int *
  30. #endif
  31. __libc_pthread_init (
  32. unsigned long int *ptr,
  33. void (*reclaim) (void))
  34. {
  35. /* Remember the pointer to the generation counter in libpthread. */
  36. #ifdef __ARCH_USE_MMU__
  37. __fork_generation_pointer = ptr;
  38. #endif
  39. /* Called by a child after fork. */
  40. #ifdef __ARCH_USE_MMU__
  41. __register_atfork (NULL, NULL, reclaim, NULL);
  42. #endif
  43. #ifndef TLS_MULTIPLE_THREADS_IN_TCB
  44. return &__libc_multiple_threads;
  45. #endif
  46. }