projects / urcu.git / blame
| Commit | Line | Data |
|---|---|---|
| 4477a870 MD |
1 | #ifndef _URCU_UTILS_H |
| 2 | #define _URCU_UTILS_H | |
| 3 | ||
| 4 | /* | |
| 5 | * urcu-utils.h | |
| 6 | * | |
| 7 | * Userspace RCU library internal utils | |
| 8 | * | |
| 9 | * Copyright (c) 2018 Michael Jeanson <mjeanson@efficios.com> | |
| 10 | * | |
| 11 | * This library is free software; you can redistribute it and/or | |
| 12 | * modify it under the terms of the GNU Lesser General Public | |
| 13 | * License as published by the Free Software Foundation; either | |
| 14 | * version 2.1 of the License, or (at your option) any later version. | |
| 15 | * | |
| 16 | * This library is distributed in the hope that it will be useful, | |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 19 | * Lesser General Public License for more details. | |
| 20 | * | |
| 21 | * You should have received a copy of the GNU Lesser General Public | |
| 22 | * License along with this library; if not, write to the Free Software | |
| 23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 24 | */ | |
| 25 | ||
| 26 | #define urcu_stringify(a) _urcu_stringify(a) | |
| 27 | #define _urcu_stringify(a) #a | |
| 28 | ||
| 83e334d0 MJ |
29 | #define max_t(type, x, y) \ |
| 30 | ({ \ | |
| 31 | type __max1 = (x); \ | |
| 32 | type __max2 = (y); \ | |
| 33 | __max1 > __max2 ? __max1: __max2; \ | |
| 34 | }) | |
| 35 | ||
| 36 | #define min_t(type, x, y) \ | |
| 37 | ({ \ | |
| 38 | type __min1 = (x); \ | |
| 39 | type __min2 = (y); \ | |
| 40 | __min1 <= __min2 ? __min1: __min2; \ | |
| 41 | }) | |
| 42 | ||
| ce28e67a MJ |
43 | /* There is no concept of symbol aliases on MacOS */ |
| 44 | #ifdef __APPLE__ | |
| 45 | #define URCU_ATTR_ALIAS(x) | |
| 46 | #else | |
| 47 | #define URCU_ATTR_ALIAS(x) __attribute__((alias(x))) | |
| 48 | #endif | |
| 49 | ||
| 99bfa9e9 MJ |
50 | #ifdef CONFIG_RCU_TLS |
| 51 | #define DEFINE_URCU_TLS_ALIAS_1(type, name, alias) \ | |
| 52 | URCU_ATTR_ALIAS(#name) \ | |
| 53 | extern type alias | |
| 54 | ||
| 55 | #else | |
| 56 | #define DEFINE_URCU_TLS_ALIAS_1(type, name, alias) \ | |
| 57 | URCU_ATTR_ALIAS("*__tls_access_" #name) \ | |
| 58 | type *__tls_access_ ## alias() | |
| 59 | #endif | |
| 60 | ||
| 61 | #define DEFINE_URCU_TLS_ALIAS(type, name, alias) \ | |
| 62 | DEFINE_URCU_TLS_ALIAS_1(type, name, alias) | |
| 63 | ||
| 4477a870 | 64 | #endif /* _URCU_UTILS_H */ |