def __init__(self):
        vstruct.VStruct.__init__(self)
        self.UserBlocks = SLIST_HEADER()
        self.AvailableBlocks = v_uint32()
        self.MinimumDepth = v_uint32()
        self.CacheShiftThreshold = v_uint32()
        self.Allocations = v_uint16()
        self.Frees = v_uint16()
        self.CacheHits = v_uint16()
        self._pad0020 = v_bytes(size=6)