1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef _LIBCPP___NEW_INTERFERENCE_SIZE_H 10 #define _LIBCPP___NEW_INTERFERENCE_SIZE_H 11 12 #include <__config> 13 #include <__cstddef/size_t.h> 14 15 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 16 # pragma GCC system_header 17 #endif 18 19 _LIBCPP_BEGIN_NAMESPACE_STD 20 21 #if _LIBCPP_STD_VER >= 17 22 23 # if defined(__GCC_DESTRUCTIVE_SIZE) && defined(__GCC_CONSTRUCTIVE_SIZE) 24 25 inline constexpr size_t hardware_destructive_interference_size = __GCC_DESTRUCTIVE_SIZE; 26 inline constexpr size_t hardware_constructive_interference_size = __GCC_CONSTRUCTIVE_SIZE; 27 28 # endif // defined(__GCC_DESTRUCTIVE_SIZE) && defined(__GCC_CONSTRUCTIVE_SIZE) 29 30 #endif // _LIBCPP_STD_VER >= 17 31 32 _LIBCPP_END_NAMESPACE_STD 33 34 #endif // _LIBCPP___NEW_INTERFERENCE_SIZE_H 35