sysdeps/mach/hurd/malloc-machine.h

   1 /* Basic platform-independent macro definitions for mutexes,
   2    thread-specific data and parameters for malloc.
   3    Copyright (C) 2003-2014 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef _MALLOC_MACHINE_H
  21 #define _MALLOC_MACHINE_H
  22
  23 #undef thread_atfork_static
  24
  25 #include <atomic.h>
  26 #include <bits/libc-lock.h>
  27
  28 /* Assume hurd, with cthreads */
  29
  30 /* Cthreads `mutex_t' is a pointer to a mutex, and malloc wants just the
  31    mutex itself.  */
  32 #undef mutex_t
  33 #define mutex_t struct mutex
  34
  35 #undef mutex_init
  36 #define mutex_init(m) (__mutex_init(m), 0)
  37
  38 #undef mutex_lock
  39 #define mutex_lock(m) (__mutex_lock(m), 0)
  40
  41 #undef mutex_unlock
  42 #define mutex_unlock(m) (__mutex_unlock(m), 0)
  43
  44 #define mutex_trylock(m) (!__mutex_trylock(m))
  45
  46 #define thread_atfork(prepare, parent, child) do {} while(0)
  47 #define thread_atfork_static(prepare, parent, child) \
  48  text_set_element(_hurd_fork_prepare_hook, prepare); \
  49  text_set_element(_hurd_fork_parent_hook, parent); \
  50  text_set_element(_hurd_fork_child_hook, child);
  51
  52 /* No we're *not* using pthreads.  */
  53 #define __pthread_initialize ((void (*)(void))0)
  54
  55 /* thread specific data for glibc */
  56
  57 #include <bits/libc-tsd.h>
  58
  59 typedef int tsd_key_t[1];       /* no key data structure, libc magic does it */
  60 __libc_tsd_define (static, void *, MALLOC)      /* declaration/common definition */
  61 #define tsd_key_create(key, destr)      ((void) (key))
  62 #define tsd_setspecific(key, data)      __libc_tsd_set (void *, MALLOC, (data))
  63 #define tsd_getspecific(key, vptr)      ((vptr) = __libc_tsd_get (void *, MALLOC))
  64
  65 /* madvise is a stub on Hurd, so don't bother calling it.  */
  66
  67 #include <sys/mman.h>
  68
  69 #undef  __madvise
  70 #define __madvise(addr, len, advice)    \
  71   ((void) (addr), (void) (len), (void) (advice))
  72
  73 #include <sysdeps/generic/malloc-machine.h>
  74
  75 #endif /* !defined(_MALLOC_MACHINE_H) */