               = 0x0  LOCK_EX                           = 0x0  LOCK_NB                           = 0x0  LOCK_SH                           = 0x0  LOCK_UN                           = 0x0  MADV_DONTNEED                     = 0x0  MADV_FREE                         = 0x0  MADV_NORMAL                       = 0x0  MADV_RANDOM                       = 0x0  MADV_SEQUENTIAL                   = 0x0  MADV_