diff options
Diffstat (limited to 'sys/gnu/fs/xfs/FreeBSD/support/mutex.h')
| -rw-r--r-- | sys/gnu/fs/xfs/FreeBSD/support/mutex.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/sys/gnu/fs/xfs/FreeBSD/support/mutex.h b/sys/gnu/fs/xfs/FreeBSD/support/mutex.h new file mode 100644 index 0000000..d9b89b3 --- /dev/null +++ b/sys/gnu/fs/xfs/FreeBSD/support/mutex.h @@ -0,0 +1,29 @@ +#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__ */ |
