| /* pthread_spin_unlock -- unlock a spin lock. Tile version. |
| Copyright (C) 2012-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include "pthreadP.h" |
| #include <atomic.h> |
| |
| int |
| pthread_spin_unlock (pthread_spinlock_t *lock) |
| { |
| #ifdef __tilegx__ |
| /* Use exchange() to bypass the write buffer. */ |
| atomic_exchange_rel (lock, 0); |
| #else |
| atomic_full_barrier (); |
| *lock = 0; |
| #endif |
| return 0; |
| } |
