malloc-machine.h 2.2 KB

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  1. /* Basic platform-independent macro definitions for mutexes,
  2. thread-specific data and parameters for malloc.
  3. Copyright (C) 2003 Free Software Foundation, Inc.
  4. This file is part of the GNU C Library.
  5. The GNU C Library is free software; you can redistribute it and/or
  6. modify it under the terms of the GNU Lesser General Public
  7. License as published by the Free Software Foundation; either
  8. version 2.1 of the License, or (at your option) any later version.
  9. The GNU C Library is distributed in the hope that it will be useful,
  10. but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12. Lesser General Public License for more details.
  13. You should have received a copy of the GNU Lesser General Public
  14. License along with the GNU C Library; if not, write to the Free
  15. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  16. 02111-1307 USA. */
  17. #ifndef _MALLOC_MACHINE_H
  18. #define _MALLOC_MACHINE_H
  19. #undef thread_atfork_static
  20. #include <atomic.h>
  21. #include <bits/libc-lock.h>
  22. __libc_lock_define (typedef, mutex_t)
  23. #define mutex_init(m) __libc_lock_init (*(m))
  24. #define mutex_lock(m) __libc_lock_lock (*(m))
  25. #define mutex_trylock(m) __libc_lock_trylock (*(m))
  26. #define mutex_unlock(m) __libc_lock_unlock (*(m))
  27. /* This is defined by newer gcc version unique for each module. */
  28. extern void *__dso_handle __attribute__ ((__weak__));
  29. #include <fork.h>
  30. #ifdef SHARED
  31. # define thread_atfork(prepare, parent, child) \
  32. __register_atfork (prepare, parent, child, __dso_handle)
  33. #else
  34. # define thread_atfork(prepare, parent, child) \
  35. __register_atfork (prepare, parent, child, \
  36. &__dso_handle == NULL ? NULL : __dso_handle)
  37. #endif
  38. /* thread specific data for glibc */
  39. #include <bits/libc-tsd.h>
  40. typedef int tsd_key_t[1]; /* no key data structure, libc magic does it */
  41. __libc_tsd_define (static, MALLOC) /* declaration/common definition */
  42. #define tsd_key_create(key, destr) ((void) (key))
  43. #define tsd_setspecific(key, data) __libc_tsd_set (MALLOC, (data))
  44. #define tsd_getspecific(key, vptr) ((vptr) = __libc_tsd_get (MALLOC))
  45. #include <sysdeps/generic/malloc-machine.h>
  46. #endif /* !defined(_MALLOC_MACHINE_H) */