| 摘要 |
PROBLEM TO BE SOLVED: To provide a data consistency guarantee system capable of obtaining a consistency guarantee on data used for an operation of a plurality of pieces of data reference S/W.SOLUTION: Data reference S/W1, 2 and 3 store data used for an operation in an operation data storage buffer 41. The operation data storage buffer 41 has a data reference presence/absence record area 411 for recording the presence/absence of reference to the operation data storage buffer 41 by the data reference S/W1, 2 and 3. Buffer management S/W4 performs storage of latest data in the operation data storage buffer 41 in response to a record of the data reference presence/absence record area 411 and performs reference instructions to the operation data storage buffer 41 and update of the record of the data reference presence/absence record area 411 with respect to a data reference request from the data reference S/W1, 2 and 3. When all the data reference S/W1, 2 and 3 refer to the data stored in the operation data storage buffer 41, the buffer management S/W4 causes all the data reference presence/absence record area 411 of the operation data storage buffer 41 not to be referred. |
