| 摘要 |
PURPOSE:To omit the exclusive control between jobs by providing a control job for replacement of control files, subjecting queue control to the request issued from each job, and executing serially the processing updating a system control file of each request in terms of time. CONSTITUTION:A control job 14 accepts the access requests supplied to a system control file 16 from the communication requester jobs 11-13 and connects these access requests to an access request queue 15 to perform successively the access processes of the file 16 at and after the head one. Then the job 14 carries out the replacement processing for acquisition of resources at the start of communication and for release of resources at the end of communication with all control blocks (shown by oblique lines) related to a single communication requester job that is taken out of the queue 15 in a control block 17 of the file 16. Then the part 14 takes the next communication requester job out of the queue and executes it.
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