diff options
author | Richard Braun <rbraun@sceen.net> | 2017-07-21 00:54:31 +0200 |
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committer | Richard Braun <rbraun@sceen.net> | 2017-07-21 00:54:54 +0200 |
commit | 4c0dcbeb7d363918c9a4a75faf3f1912f580f9c1 (patch) | |
tree | 6fdb4a1b80d4aa51bbafda6f930f9f222adc4368 /kern/mutex_i.h | |
parent | adcae3076edee5ed24cb06f4328f88cfa5e8998a (diff) | |
parent | 5c2cf8fff7a1d6dc6b88615df5433ddccbbcf51f (diff) |
Merge branch 'adaptive_spinning'
Diffstat (limited to 'kern/mutex_i.h')
-rw-r--r-- | kern/mutex_i.h | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/kern/mutex_i.h b/kern/mutex_i.h deleted file mode 100644 index 3b36dcde..00000000 --- a/kern/mutex_i.h +++ /dev/null @@ -1,54 +0,0 @@ -/* - * Copyright (c) 2013-2017 Richard Braun. - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * This program 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#ifndef _KERN_MUTEX_I_H -#define _KERN_MUTEX_I_H - -#ifndef X15_MUTEX_PI - -#include <assert.h> - -#include <kern/atomic.h> -#include <kern/mutex_types.h> - -#define MUTEX_UNLOCKED 0 -#define MUTEX_LOCKED 1 -#define MUTEX_CONTENDED 2 - -static inline unsigned int -mutex_lock_fast(struct mutex *mutex) -{ - return atomic_cas_acquire(&mutex->state, MUTEX_UNLOCKED, MUTEX_LOCKED); -} - -static inline unsigned int -mutex_unlock_fast(struct mutex *mutex) -{ - unsigned int state; - - state = atomic_swap_release(&mutex->state, MUTEX_UNLOCKED); - assert((state == MUTEX_LOCKED) || (state == MUTEX_CONTENDED)); - return state; -} - -void mutex_lock_slow(struct mutex *mutex); - -void mutex_unlock_slow(struct mutex *mutex); - -#endif /* X15_MUTEX_PI */ - -#endif /* _KERN_MUTEX_I_H */ |