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 _GENERIC_MALLOC_MACHINE_H
21#define _GENERIC_MALLOC_MACHINE_H
22
23#include <atomic.h>
24
25#ifndef atomic_full_barrier
26# define atomic_full_barrier() __asm ("" ::: "memory")
27#endif
28
29#ifndef atomic_read_barrier
30# define atomic_read_barrier() atomic_full_barrier ()
31#endif
32
33#ifndef atomic_write_barrier
34# define atomic_write_barrier() atomic_full_barrier ()
35#endif
36
37#ifndef DEFAULT_TOP_PAD
38# define DEFAULT_TOP_PAD 131072
39#endif
40
41#endif /* !defined(_GENERIC_MALLOC_MACHINE_H) */
42