メッセージ待ち行列

int		getmsgqcmwlabel(					int msqid, bclabel_t *cmwlabel);
 int 		msggetl(					key_t key, int msgflg, bslabel_t *senslabel);
 int		msgsndl(					int msqid, const void *msgp, size_t msgsz, int msgflg, bilabel_t
 							*inflabel);
 int		msgrcvl(					int msqid, void *msgp, size_t msgsz, long msgtyp, int msgflg,
 							bilabel_t *inflabel);