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[FreeBSD/releng/9.2.git] / sys / gnu / fs / xfs / FreeBSD / support / spin.h
1 #ifndef __XFS_SUPPORT_SPIN_H__
2 #define __XFS_SUPPORT_SPIN_H__
3
4 #include <sys/param.h>
5 #include <sys/types.h>
6 #include <sys/lock.h>
7 #include <sys/mutex.h>
8
9 #define SPLDECL(s)      register_t s
10
11 /*
12  * Map the spinlocks from IRIX to FreeBSD
13  */
14 #define spinlock_init(lock, name)       mtx_init(lock, name, NULL, MTX_DEF)
15 #define spinlock_destroy(lock)          mtx_destroy(lock)
16
17 /*
18  * Map lock_t from IRIX to FreeBSD mutexes
19  */
20 typedef struct mtx lock_t;
21
22 #define nested_spinunlock(lock)         mtx_unlock(lock)
23 #define nested_spinlock(lock)           mtx_lock(lock)
24 #define nested_spintrylock(lock)        mtx_trylock(lock)
25
26 #define spin_lock(lock)                 mtx_lock(lock)
27 #define spin_unlock(lock)               mtx_unlock(lock)
28
29 #if LOCK_DEBUG > 0
30 #define mutex_spinlock(lock)            (spin_lock(lock),0)
31 #else
32 static __inline register_t
33 mutex_spinlock(lock_t *lock)            { mtx_lock(lock); return 0; }
34 #endif
35
36 #define mutex_spinunlock(lock, s) \
37         do { \
38                 spin_unlock(lock); \
39                 if (s != 0) {} \
40         } while (0)
41
42 #endif /* __XFS_SUPPORT_SPIN_H__ */