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FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
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#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_trylock(lock) sx_try_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__ */