JPS61262837A - File allocation controlling system - Google Patents

Abstract

PURPOSE:To prevent automatically the illegal execution of a job at the time of executing the job by allocating a file by the job and releasing it. CONSTITUTION:With the aid of registration information of a job unit file allocation control means 4, the job unit file allocation means 5 decides whether or not all files can be allocated to jobs requesting the allocation of a file. When the file can be allocated, the information showing that the file is allocated to the job is registered in the job unit file allocation control means 4, and a step start processing means 7 is operated. On the basis of the information of the job unit file allocation control means 4, a jot unit file releasing means 13 releases the file allocated to the job unit. After file allocation request information, file allocation information, etc., all of which are registered in the job unit file allocation control means 4, are erased, the means 13 operates a file allocation waiting means 6, and allocates again files when there are the job and step which are pended to be allocated.

Description

[Detailed Description of the Invention] Flame Vermilion 1 The present invention relates to a file allocation control method, and in particular, in a system based on allocating and releasing files on a step-by-step basis, it is possible to allocate and release files on a job-by-job basis. Regarding the file allocation control method.

System C, which is based on allocating and releasing files on a step-by-step basis, reduces wasted memory usage as much as possible by allocating and releasing files on a step-by-step basis.1) One system as a whole We are trying to make effective use of files.

However, since this file allocation control method focuses on effective use of files, looking at only one job does not necessarily mean that the job is being executed efficiently. For example, in a job consisting of three steps,
Assume that the first step uses file F1, the second step uses file F2, and the third step uses file F1.

If another job that uses file F1 is executed while the first step of this job is being executed, the subsequent job will have the file allocation because file F1 is already in use in the first step that is being executed. .

After the first step is finished, file [1 is unblocked, and the second program 7' that uses file [2 is started, the file allocation is changed to the file "
A subsequent jib using 4 is executed. After this, the second step using file F1 is completed and file F1 is freed, and when the third step is executed, the subsequent job is already using file F1. The step holds the file allocation until the subsequent job stops using the file F1, and its execution is suspended.

In this way, for the preceding job, it appears that the file was intercepted by the succeeding job, and it is unlikely that the job was executed efficiently as it took extra time to complete. Also,
If the contents of file [1 are updated in a subsequent job, there is a possibility that the execution result of the preceding job will be incorrect.

However, in the past, there was no way to prevent the execution of jobs that were affected by a specific job or to prevent job execution that would cause job malfunctions. I had no choice but to rely on him.

In the conventional step-by-step file allocation control method described above, a file is allocated at the start of a step and released at the end of the step, so it is easily influenced by other jobs, and is a means of improving the execution efficiency of a specific job. The disadvantage is that the only way to prevent job malfunctions is to rely on operational rules during job execution.

1ri9'1 The present invention allocates and releases files not only for each step but also for each job, thereby preventing a specific job from being influenced by other jobs, and preventing unauthorized execution of a job at the time of job execution. The object of the present invention is to provide a job allocation control method that automatically prevents I/O protection.

1 riμm■ The job allocation control method according to the present invention includes an input means for inputting a job control statement requesting file allocation for each job and each step constituting the job, and for storing information regarding file allocation requests for each job. job-by-job file allocation management means that allocates files to each job based on this information and updates the information;
When the execution of the job is completed, the job is allocated to each job based on the information managed by the job unit allocation management means)? and job unit file release means for releasing the file.

In addition to the above configuration, another job allocation control method according to the present invention further includes a file allocation control means for suspending file allocation in case a file conflict occurs at the time of file allocation. It has some characteristics.

Embodiment The structure of the present invention will be explained in detail with reference to the drawings.

Referring to FIG. 1, one embodiment of the present invention includes a job input means 1, a job start processing control means 2, and a sign statement (a job control statement requesting file allocation for each job, called C0N5IGN). Processing means 3, job unit file allocation management means 4, job priority file allocation means 5
, file allocation control unit 6, step start processing control stage 7, deadlock detection unit 8, step lfi
4rt file allocation means 9, step execution 10, step unit release means 11, step end processing control means 12
, a job unit file unraveling means 13, and a zip termination processing means 14.

Referring to FIG. 2, the job control statement J is described, and (A) and Nl) are 21 sign statements C0
(C) represents a job that does not use N5IGN, and (C) represents a job that uses the free statement C0N5IGN.

Before explaining the operation of the present invention, the job and the =1jin statement C0N5IGN will be explained with reference to FIG.

Jobs will be explained with reference to FIG. 2(A). One project 1 is composed of one step or a plurality of slabs and is described by job control statements. At the beginning of a series of job control statements that describe a job is a job statement "OB" in which a job name is written, the job is identified within the system by the job name specified by the job statement JOB. A step is a step statement S 'F that indicates the beginning of a specific step.
Starts with IP. In the step statement 5TEP, the program name, step execution time limit, parameter information to be passed to the program, etc. can be written.

Assignment statement ASSIGN (This is a job control statement that requests file allocation for each step that makes up a job)
[Matters regarding the file are described and the step is requested to allocate the file. The main information that can be written in this assignment statement ASSIGN includes file name device, medium name, etc. The resources secured by this alley-in statement Ass IGN are released at the end of the step. The step statement ENDSTEP indicates a step break, and the step statement ENDJOB indicates a job break.

With reference to FIG. 2(C), the sign statement C0IISIGN will be explained. The consign statement C0N5IGN is for requesting -C to allocate a file to each job by writing the file name.
Files allocated by IGN are allocated at the start of a job and released at the end of the job.

Use files assigned to each job in steps.
In order to do so, it is necessary to clearly indicate that the file is to be used in the step by specifying the file name specified in the assignment statement C0N5IGN'c) using the assignment statement ASSIGN.

Refer to Figure 2 (A) to (C): Conline sentence C0N5
To explain an example of how IGN is used, when the job in Figure 2 (A) and the job in (B) are executed simultaneously, the job in (B) is executed while the second step of the job in (A) is being executed. File FI1. used in the third step of job (A). If E1 is updated by job (B), the execution result of the third step of job (A>) will be incorrect.Instead of avoiding this situation with job operation n11, (C) [like a job] unsigned sentence C0
By using N5IGN, the file F I 1.E 1 used in job (A>) is secured until job (△) is completed, thereby preventing it from being intercepted by job (B). Therefore, it is possible to automatically prevent the execution result of job (A) from being incorrect.

In addition, as in job (C), all files used in each step of job (C) are secured until the end of the job by the consign statement C0N5 IGN, ignoring the need for effective use of resources. It is also possible to execute the job without being intercepted and to obtain the execution result of the job by 1q.

Next, the operation of the present invention will be explained with reference to the drawings.

First, a user requests execution of a job from job input means 1, which is conventionally available, and operates job start processing means 2. The job start processing means 2 determines whether or not the job requested to be executed can be executed. If it is determined that the job cannot be executed, the job termination processing means 14 is operated to terminate the job.

If it is the execution phase, if the consign statement C0N5IGN is not specified, the step start processing means 7 is operated, and if the consign statement C0N5IGN is specified, the consign statement processing means 3 is operated.

] The consign sentence processing means 3 is the consign sentence C0N5IGH.
It is determined whether there is an error or not, and if the error is 7:i ij, the information is recorded in the job unit noire allocation management means 4. Ron sign statement processing means 3 (Mako's processing is the number of times the con sign statement C0N5IGN is written [J repeat,
Thereafter, the job unit file allocation means 5 is operated. ]
] If there is an error in the N4J-IN statement C0N5IG, the information already recorded in the job unit file allocation management means 4 is erased, and the job termination processing means 14 is operated to abnormally terminate the job.

The job-by-job file allocation means 5 uses the σ record information of the job-by-job file allocation management means 4 to determine whether or not all the files that have requested allocation on a job-by-job basis can be allocated to the job. Then, the information that the file has been allocated to the job is recorded in the job unit file allocation management means 4, and the step starts on 9/11! f! Operate means 7. If allocation is not possible, if there is already a file allocated to each job, the allocation information for that file is deleted from the job-based file allocation management means 4, the file allocation control means 6 is avoided, and the file allocation is suspended. .

The step start processing means 7 determines whether or not the step can be started, and if possible, performs 41 procedures necessary for starting the step, and then operates the step unit-noir assignment means 9. If the step cannot be started, the step end processing means 12 is operated to abnormally end the step.

The step-by-step file allocation means 9 determines whether all non-files that have allocation requests in step units can be allocated.
All can be assigned 4j If step execution 10 is executed, step execution 10 ends by Y-
i 4it file wl/+Ii means 11 is operated. If there is an error in the step unit allocation request and the file cannot be allocated to Stellar 1, the Stellar 1 execution 10 is not operated and the step unit file release means 11 is operated. If the file that has been requested to be allocated on a step-by-step basis conflicts with another job and cannot be allocated, the deadlock detection means 8 is activated, and the deadlock detection means 8 suspends the file allocation. If you can decide whether or not you can do it and put it on hold,
After the files already allocated in steps are released, the file allocation holding control means 6 is operated to suspend file allocation.

In the step unit file release process 11, after releasing all files allocated to each step, the file allocation holding means 6 is activated, and if there is a job or step for which file allocation is pending, the job unit file allocation means 5 or The step unit file allocation means 9 is operated to allocate blue electric files. The step end processing means 12 is also operated. The step end processing means 12 performs the necessary procedures to end the step, and if there is a next step, operates the step start processing means 7 for the next step. If there is no next step, the job-only Q file release means 13 is operated.

The job-by-job file release means 13 releases the files allocated to each job based on the information from the job-by-job file allocation management means 4, and releases the files allocated to each job based on the information from the job-by-job file allocation management means 4. After erasing information etc., allocate files) 5 Means 6
If there are any jobs or steps with file allocation pending, those files will be re-allocated.

Also, the job end processing means 14 is operated. The job termination processing means 14 performs the necessary procedures to terminate the job. The operation described above realizes a file allocation control method that allocates files on a job-by-job basis.

As explained above, according to the present invention, by making it possible to allocate and release files on a job-by-job basis, a specific job can be prevented from being influenced by other jobs and can be prioritized. This is effective in automatically preventing job execution from being executed incorrectly, or preventing incorrect execution of jobs due to concurrent execution.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the file allocation control method for allocating files on a job-by-job basis according to the present invention, and FIG. 2 is an example of a diversion described by the job system m+old8R.
(A) and (B) are examples of conley-in statement C (without INsIGN), and (C) is an example of [INsIGN].
This is an example using GN. Explanation of symbols of main parts 1...Job input means

Claims (2)

[Claims] (1) A file allocation control method in a data processing system that allocates and releases file resources on a job step basis, with a job control statement that requests file allocation on a job-by-job basis and on a step-by-step basis that constitutes the job. an input means for inputting a job, a job-by-job file allocation management means for storing information regarding a job-by-job file allocation request, allocating files in a job-by-job based on this information, and updating the information; a job-by-job file release means for releasing files allocated on a job-by-job basis based on information managed by the job-by-job allocation management means. (2) A file allocation control method in a data processing system that allocates and releases file resources on a job-step basis, with a job control statement that requests file allocation on a job-by-job basis and on a step-by-step basis that constitutes the job. an input means for inputting file allocation requests, a job-based file allocation management means for storing information regarding file allocation requests for each job, allocating files for each job based on this information, and updating the information; A file allocation wait control means performs hold control of file allocation when a file allocation occurs, and a file allocation wait control means that performs hold control of file allocation when a job is executed, and a file allocation wait control means that controls a file allocated on a job-by-job basis based on information managed by the job-based allocation management means when job execution is completed. 1. A file allocation control method comprising: means for releasing files in units of jobs.