diff options
Diffstat (limited to 'sys/gnu/fs/xfs/FreeBSD/support/rwsem.h')
| -rw-r--r-- | sys/gnu/fs/xfs/FreeBSD/support/rwsem.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/sys/gnu/fs/xfs/FreeBSD/support/rwsem.h b/sys/gnu/fs/xfs/FreeBSD/support/rwsem.h new file mode 100644 index 0000000..bb97232 --- /dev/null +++ b/sys/gnu/fs/xfs/FreeBSD/support/rwsem.h @@ -0,0 +1,21 @@ +#ifndef __XFS_SUPPORT_RWSEM_H__ +#define __XFS_SUPPORT_RWSEM_H__ + +#include <sys/param.h> +#include <sys/lock.h> +#include <sys/mutex.h> +#include <sys/sx.h> + +#define rw_semaphore sx + +#define init_rwsem(sem) sx_init(sem, "rwsem") +#define free_rwsem(sem) sx_destroy(sem) +#define down_read(sem) sx_slock(sem) +#define down_read_trylock(sem) sx_try_slock(sem) +#define down_write(sem) sx_xlock(sem) +#define down_write_trylock(sem) sx_try_xlock(sem) +#define up_read(sem) sx_sunlock(sem) +#define up_write(sem) sx_xunlock(sem) +#define downgrade_write(sem) sx_downgrade(sem) + +#endif /* __XFS_SUPPORT_RWSEM_H__ */ |
