1 /* Basic platform-independent macro definitions for mutexes, 2 thread-specific data and parameters for malloc. 3 Copyright (C) 2003, 2007, 2008 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 __libc_lock_define (typedef, mutex_t) 29 30 #define mutex_init(m) __libc_lock_init (*(m)) 31 #define mutex_lock(m) __libc_lock_lock (*(m)) 32 #define mutex_trylock(m) __libc_lock_trylock (*(m)) 33 #define mutex_unlock(m) __libc_lock_unlock (*(m)) 34 35 /* This is defined by newer gcc version unique for each module. */ 36 extern void *__dso_handle __attribute__ ((__weak__)); 37 38 #include <fork.h> 39 40 #define ATFORK_MEM static struct fork_handler atfork_mem 41 42 #ifdef SHARED 43 # define thread_atfork(prepare, parent, child) \ 44 atfork_mem.prepare_handler = prepare; \ 45 atfork_mem.parent_handler = parent; \ 46 atfork_mem.child_handler = child; \ 47 atfork_mem.dso_handle = __dso_handle; \ 48 atfork_mem.refcntr = 1; \ 49 __linkin_atfork (&atfork_mem) 50 #else 51 # define thread_atfork(prepare, parent, child) \ 52 atfork_mem.prepare_handler = prepare; \ 53 atfork_mem.parent_handler = parent; \ 54 atfork_mem.child_handler = child; \ 55 atfork_mem.dso_handle = &__dso_handle == NULL ? NULL : __dso_handle; \ 56 atfork_mem.refcntr = 1; \ 57 __linkin_atfork (&atfork_mem) 58 #endif 59 60 /* thread specific data for glibc */ 61 62 #include <bits/libc-tsd.h> 63 64 typedef int tsd_key_t[1]; /* no key data structure, libc magic does it */ 65 __libc_tsd_define (static, void *, MALLOC) /* declaration/common definition */ 66 #define tsd_key_create(key, destr) ((void) (key)) 67 #define tsd_setspecific(key, data) __libc_tsd_set (void *, MALLOC, (data)) 68 #define tsd_getspecific(key, vptr) ((vptr) = __libc_tsd_get (void *, MALLOC)) 69 70 #include <sysdeps/generic/malloc-machine.h> 71 72 #endif /* !defined(_MALLOC_MACHINE_H) */ 73