30 lines
815 B
C
30 lines
815 B
C
#ifndef __XFS_SUPPORT_MUTEX_H__
|
|
#define __XFS_SUPPORT_MUTEX_H__
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/sx.h>
|
|
|
|
/*
|
|
* Map the mutex'es from IRIX to FreeBSD. Irix holds mutexes across
|
|
* sleeps, so on FreeBSD we have a choice of sema, sx or lockmgr
|
|
* to use as a underlining implemenation. Go with sx always locked
|
|
* in exclusive mode for now as it gets all the benefits of witness
|
|
* checking.
|
|
*/
|
|
typedef struct sx mutex_t;
|
|
|
|
#define mutex_init(lock, type, name) sx_init(lock, name)
|
|
#define mutex_lock(lock, num) sx_xlock(lock)
|
|
#define mutex_trylock(lock) sx_try_xlock(lock)
|
|
#define mutex_unlock(lock) sx_xunlock(lock)
|
|
#define mutex_destroy(lock) sx_destroy(lock)
|
|
|
|
/*
|
|
* Type for mutex_init()
|
|
*/
|
|
#define MUTEX_DEFAULT 0
|
|
|
|
#endif /* __XFS_SUPPORT_MUTEX_H__ */
|