構造体定義書

typedef struct _MCSetT

No.	名称	属性	説明
1	_MCSetT
	setId	long	Id of this set
	nextSet	off_t	Offset of next set on disk
	firstMsg	off_t	Offset to first Msg (while on disk)
	msgs	MCMsgT *	Pointer to array of msgs (in mem, loaded)
	u
	data	MCOffsetT	Offset to data, or pointer to data
	dataLen	long	Length of data area on disk
	numMsgs	long	Number of messages
	invalid	long	Valid on disk, loaded in memory

_MCSetT