diff options
Diffstat (limited to 'sys/gnu/fs/xfs/FreeBSD/support/rwlock.h')
| -rw-r--r-- | sys/gnu/fs/xfs/FreeBSD/support/rwlock.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/sys/gnu/fs/xfs/FreeBSD/support/rwlock.h b/sys/gnu/fs/xfs/FreeBSD/support/rwlock.h new file mode 100644 index 0000000..05f489e --- /dev/null +++ b/sys/gnu/fs/xfs/FreeBSD/support/rwlock.h @@ -0,0 +1,22 @@ +#ifndef __XFS_SUPPORT_RWLOCK_H__ +#define __XFS_SUPPORT_RWLOCK_H__ + +#include <sys/param.h> +#include <sys/lock.h> +#include <sys/mutex.h> +#include <sys/sx.h> + +typedef struct sx rwlock_t; +typedef int wait_queue_head_t; + +#define rwlock_init(lock) sx_init(lock, "rwlock") +#define rwlock_destroy(lock) sx_destroy(lock) +#define read_lock(lock) sx_slock(lock) +#define read_unlock(lock) sx_sunlock(lock) +#define write_lock(lock) sx_xlock(lock) +#define write_unlock(lock) sx_xunlock(lock) +#define rwlock_trypromote(lock) sx_try_upgrade(lock) +#define rwlock_demote(lock) sx_downgrade(lock) + + +#endif /* __XFS_SUPPORT_RWLOCK_H__ */ |
