JPH04287232A - Exclusive job controller - Google Patents

Abstract

PURPOSE:To easily instruct the execution of a job by dividing plural jobs into groups of jobs which are inconvenient to be executed simultaneously and making the groups to queue up for the starting of the processes of other groups by using an exclusive control management table. CONSTITUTION:An exclusive control management file 10 is an indexed sequential file in which one group is made to correspond to one group and constituted of an index key section 11 and executing state managing section 12. When the user of a computer system actuates a certain job, the job sets an execution flag in the section 12 belonging to the group of the job in the file 12 and starts the process. In case another job is actuated while the process is carried on, the another job similarly tries to set the flag, but, since the flag is already set by the preceding job, starting of the process is set in a queue and restarted after the preceding job is completed and the flag is canceled. Therefore, it is not required by the user of the computer system to monitor the job executing state of the system and can smoothly operate the system without worrying about a possibility of destroying the file data by an erroneous instruction.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to exclusive control of jobs in a computer system.

0002

2. Description of the Related Art Conventionally, when performing exclusive control of a job, it is necessary to maintain complete consistency in the data contents of a plurality of files handled by the job. Normally, if it is inconvenient for the job to be executed at that point, the user of the computer system should monitor the job execution status of the entire computer system and check whether or not there will be any problems due to the job being executed at that point. It is necessary to instruct the execution of the job after making a judgment. In particular, it is difficult for users of remote terminals to grasp the job execution status of the entire computer system.

0003

[Problem to be Solved by the Invention] In conventional job exclusive control, the user of the computer system must grasp the job execution status of the entire computer system and instruct the execution of jobs in a timely manner. This placed a heavy burden on people.

[0004] Furthermore, since it is difficult for users of remote terminals to grasp the job execution status of the entire computer system, there is a high possibility that instructions to execute jobs that would be inconvenient if executed at that time are generated. , there was a risk that the smooth operation of the computer system would be hindered due to file data destruction or repair due to file data destruction.

[0005]

[Means for Solving the Problems] The present invention provides information on the execution status of jobs in an exclusive control management file so that the user of a computer system can instruct the execution of jobs without being aware of it at all times, thereby improving the overall performance of the computer system. The purpose is to eliminate the burden of monitoring job execution status and to operate the computer system smoothly.

That is, the job exclusive control device of the present invention groups jobs in advance for which it is inconvenient to execute multiple jobs at the same time, and immediately before the job is submitted and starts processing, the job exclusive control apparatus The configuration is configured so that the start of processing in the management area of the group is registered, the registration of the management area is canceled when the processing is completed, and the processing of other jobs in the own group is waited for while the processing is being executed. be done.

Further, in the job exclusive control device of the present invention, the exclusive control management file includes an index key section indicating a group of jobs that are inconvenient to execute simultaneously, and whether or not a job corresponding to the index key section is being executed. and an execution status management section that shows the execution status.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is an explanatory diagram showing the structure of an exclusive control management file. The exclusive control management file 10 is organized in an indexed sequential manner, and one record corresponds to one group, each of which is composed of an index key section 11 and an execution status management section 12. The index key section 11 serves as an index key for indexing sequential organization, and matches the group name for which exclusive control is checked. Further, the execution status management section 12 is a flag indicating whether or not a job in the group corresponding to the index key of the index key section 11 is being executed.

Next, FIG. 3 shows the exclusive control method for jobs.
Explain with reference to. Job n1 and job n2 are jobs that would be inconvenient if executed at the same time, and belong to the same group in the above grouping.

[0011] First, when job n1 is started in response to an instruction from a user of the computer system, job n1 sets a flag indicating that it is being executed in the execution status management section of the group to which it belongs in the exclusive control management file, and starts processing. Start. Next, when job n2 is started, it tries to set the flag in the same way, but since the flag has already been set by job n1, the start of processing is postponed. job n1
releases the exclusive control management file flag when the processing is completed. Job n2 is restarted because the flag in the exclusive control management file is cleared, sets the flag, and starts processing.

FIG. 2 is a flowchart showing the above operation.

First, in step 21, the user of the computer system instructs and starts the execution of a job. Next, in order to determine whether or not the started job can be executed, step 22 searches the flag of the exclusive control management file and checks whether or not another job is being executed. If the result of this check is negative, set a flag in the exclusive control management file (
Step 23) and start processing (Step 24). When the processing is completed, the flag of the exclusive control management file is canceled and all processing is ended (step 25).

On the other hand, as a result of the above check, if another job is being executed, the job waits for the processing of the currently executing job to be completed (step 26), and when the flag in the exclusive control management file is cleared, the job is Start processing.

[0015] It should be noted that the jobs that are queued by the exclusive control management file must maintain complete consistency in the data contents of the plurality of files handled by the job, and it is inconvenient for the jobs to be executed simultaneously. That is, these jobs belong to the same group in the above grouping.

[0016]

[Effects of the Invention] By using the present apparatus as described above, the user of the computer system does not need to monitor the job execution status of the entire computer system. Therefore, it is possible to issue job execution instructions without being aware of it all the time. Furthermore, there is no risk of file data being destroyed due to incorrect job execution instructions, and the computer system can operate smoothly.

[Brief explanation of the drawing]

[Figure 1] Explanatory diagram showing the structure of an exclusive control management file

[Figure 2] Flowchart showing operation steps

[Figure 3] Explanatory diagram showing an example of operation

[Explanation of symbols]

10 Exclusive control management file 11 Index key section 12 Execution status management department 21-26 Processing steps

Claims (2)

[Claims] [Claim 1] Jobs for which it is inconvenient to execute multiple jobs at the same time are grouped in advance, and immediately before a job is submitted and processing is started, a message indicating the start of processing of the management area of the own group in the exclusive control management file is created. A job exclusive control device characterized in that the job exclusive control device registers a job, deregisters the management area when the processing is completed, and waits for the start of processing of another job in the own group while executing the processing. 2. In the job exclusive control device according to claim 1, the exclusive control management file includes an index key section indicating a group of jobs that are inconvenient to execute simultaneously, and whether jobs corresponding to the index key section are being executed. 1. A job exclusive control device, comprising: an execution status management unit that indicates whether or not the job is executed.