1/* Basic platform-independent macro definitions for mutexes,
2 thread-specific data and parameters for malloc.
3 Copyright (C) 2003-2016 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 <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. */
36extern 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#include <sysdeps/generic/malloc-machine.h>
61
62#endif /* !defined(_MALLOC_MACHINE_H) */
63