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 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