projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 99dee823 | 1 | /* Copyright (C) 2015-2021 Free Software Foundation, Inc. |
| 6103184e | 2 | Contributed by Alexander Monakov <amonakov@ispras.ru> |
| 113020dc TS |
3 | |
| 4 | This file is part of the GNU Offloading and Multi Processing Library | |
| 5 | (libgomp). | |
| 6 | ||
| 7 | Libgomp is free software; you can redistribute it and/or modify it | |
| 8 | under the terms of the GNU General Public License as published by | |
| 9 | the Free Software Foundation; either version 3, or (at your option) | |
| 10 | any later version. | |
| 11 | ||
| 12 | Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
| 14 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 15 | more details. | |
| 16 | ||
| 17 | Under Section 7 of GPL version 3, you are granted additional | |
| 18 | permissions described in the GCC Runtime Library Exception, version | |
| 19 | 3.1, as published by the Free Software Foundation. | |
| 20 | ||
| 21 | You should have received a copy of the GNU General Public License and | |
| 22 | a copy of the GCC Runtime Library Exception along with this program; | |
| 23 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
| 24 | <http://www.gnu.org/licenses/>. */ | |
| 25 | ||
| 6103184e AM |
26 | /* This is an NVPTX specific implementation of a mutex synchronization |
| 27 | mechanism for libgomp. This type is private to the library. This | |
| 28 | implementation uses atomic instructions and busy waiting. */ | |
| 29 | ||
| 30 | #ifndef GOMP_MUTEX_H | |
| 31 | #define GOMP_MUTEX_H 1 | |
| 32 | ||
| 33 | typedef int gomp_mutex_t; | |
| 34 | ||
| 35 | #define GOMP_MUTEX_INIT_0 1 | |
| 36 | ||
| 37 | static inline void | |
| 38 | gomp_mutex_init (gomp_mutex_t *mutex) | |
| 39 | { | |
| 40 | *mutex = 0; | |
| 41 | } | |
| 42 | ||
| 43 | static inline void | |
| 44 | gomp_mutex_destroy (gomp_mutex_t *mutex) | |
| 45 | { | |
| 46 | } | |
| 47 | ||
| 48 | static inline void | |
| 49 | gomp_mutex_lock (gomp_mutex_t *mutex) | |
| 50 | { | |
| 51 | while (__sync_lock_test_and_set (mutex, 1)) | |
| 52 | /* spin */ ; | |
| 53 | } | |
| 54 | ||
| 55 | static inline void | |
| 56 | gomp_mutex_unlock (gomp_mutex_t *mutex) | |
| 57 | { | |
| 58 | __sync_lock_release (mutex); | |
| 59 | } | |
| 60 | #endif /* GOMP_MUTEX_H */ |