1/* Basic platform-independent macro definitions for mutexes,
2 thread-specific data and parameters for malloc.
3 Copyright (C) 2003-2021 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 <https://www.gnu.org/licenses/>. */
19
20#ifndef _GENERIC_MALLOC_MACHINE_H
21#define _GENERIC_MALLOC_MACHINE_H
22
23#include <atomic.h>
24#include <malloc-alignment.h>
25
26#ifndef atomic_full_barrier
27# define atomic_full_barrier() __asm ("" ::: "memory")
28#endif
29
30#ifndef atomic_read_barrier
31# define atomic_read_barrier() atomic_full_barrier ()
32#endif
33
34#ifndef atomic_write_barrier
35# define atomic_write_barrier() atomic_full_barrier ()
36#endif
37
38#ifndef DEFAULT_TOP_PAD
39# define DEFAULT_TOP_PAD 131072
40#endif
41
42#endif /* !defined(_GENERIC_MALLOC_MACHINE_H) */
43