JPH05120096A - File overflow controlling system - Google Patents

Abstract

PURPOSE:To prevent a fault due to file overflow by enabling a processing program to recognize beforehand the risk of the file overflow in file batch update processing. CONSTITUTION:This system in provided with a file management part 1a having a file starting position 11, a data final position 12, a file overflow warning point 13 set at the time of ensuring a file area, and a file ending position 14, and execution time routine 2 to inform the processing program 3 of that the value of the data final position 12 reaches the value of the file overflow warning point 13 at the time of such a situation. In the batch processing, the program recognizes beforehand the risk of the overflow of the file.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data file addition process in an information processing apparatus, and more particularly to a file overflow management system for notifying a program of a risk of file overflow at that time.

[0002]

2. Description of the Related Art A conventional file overflow management system will be described with reference to the drawings.

FIG. 3 is a block diagram of a conventional file overflow management system.

Referring to FIG. 3, in the conventional file overflow management method, a file start position 11 and a file end position 14 are set in the file management unit b1b when the file area is secured, and the value of the final position 12 of the data is the end of the file. When the value of the position 14 is reached or exceeded, the fact is notified to the program.

At this time, the data area 41 of the file data section 4 reaches the end position 14, the empty area 42 disappears,
It is impossible to add more data.

[0006]

In the above-mentioned conventional file overflow management method, when the data end position reaches the file end position, that is, when it is impossible to output any more data, that effect is not recognized. Since the program is notified, the processing is usually stopped at that point, and the area of the file is expanded manually, and then the reprocessing is performed, which causes a problem that the normal processing flow is hindered.

In order to avoid this, in the prior art,
The operator regularly refers to the information in the file management section to prepare for a file overflow, and the complicated work occurs.
There is a drawback that work efficiency deteriorates.

An object of the present invention is to notify the processing program when a file overflow warning point set when a file area is secured and the value of the data end position reaches the value of the file overflow warning point. By including a routine to enable the processing program to recognize the risk of file overflow in advance in batch processing of files, the above drawbacks can be solved and problems due to file overflow can be prevented and work efficiency can be improved. It is to provide a file overflow management method capable of improving

[0009]

According to the file overflow management method of the present invention, the file start position indicating the file start position in the magnetic disk device, the data end position indicating the position of the last data, and the data addable area remain small. When the value of the data end position in the file reaches the file over warning point, the file management section has a file over warning point set to notify the program and a file end position indicating the end position of the file. A run-time routine is provided to notify the program updating the corresponding file in the file management unit that the file-over warning point has been reached.

[0010]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram of a file overflow management system of an embodiment of the present invention, and FIG. 2 is a correlation diagram of an input / output file and a program of this embodiment.

In FIG. 1, the file overflow management system of this embodiment has a file management unit having a file start position 11, a data end position 12, a file overflow warning point 13 and a file end position 14 set when a file area is secured. a1a and a runtime routine 2 for notifying the processing program 3 that is updating the corresponding file when the value of the data final position 12 reaches the value of the file overflow warning point 13.

By setting the file overflow warning point 13 when allocating the file area, for example, when allocating the file area capable of storing the data number of 10,000, the file overflow warning point 13 is set to 9,000. By doing so, when the processing program 3 outputs the file overflow warning point 13 of the data of 9000, the runtime routine 22 notifies the processing program 3 that only the remaining data of 1,000 can be output. The operator is notified by printing and displaying the message.

Therefore, the most effective embodiment is that
The processing program 23 sequentially reads the processing file 21 which is the input / output file shown in FIG. 2, and registers and updates data in the update file 23 according to the contents of the processing data.
This is a case of deleting all at once.

Next, a specific example will be described with reference to FIG.

The input processing file 21 has a maximum number of registrations of 4 and stores the number of unspecified data every day, and the contents of the data are three types of registration, update, and deletion with respect to the update file 23.

The output update file 23 has a maximum number of 10,000 registrations, and the "file overflow warning point" is set to 9000 registrations.

The contents of the update file 23 are erased in the cycle of data registration / update / deletion according to the contents of the processing file 21, and the number of registered items is returned to 0.
Until then, the data of the update file 23 is always held.

The processing program 22 is a processing file 21.
Are sequentially read, and data is registered / updated / deleted in the update file 23 according to the contents.

However, the processing cycle is daily, and it is assumed to be one of a plurality of programs executed in the night unmanned operation.

Table 1 shows the number of data additions (the number of registrations and the number of deletions offset) from the 8th day after the start of unmanned operation.
And the number of data items in the update file 3 after the processing program 22 is executed.

[0022]

[Table 1]

In the case of this example, since the number of data cases has reached the overflow warning point of 9000 during the processing on the ninth day, the processing program 22 prints a warning message on the printer and ends the processing.

On the next day, the operator reviews the capacity of the update file 23 by the warning message and expands the capacity, so that the nighttime processing of the day can be operated without any trouble.

In the above, the file start value 11
Is a position where a file is deleted, that is, a file management unit is initialized, and a file end position 14 is a position where a file is registered, that is, a file management unit is updated.
The contents are unchanged until the above process is performed again.

[0026]

As described above, according to the file overflow management method of the present invention, in batch processing of files, a program can recognize the risk of file overflow in advance, so that a failure due to file overflow can be prevented. There is an effect that it can be prevented and the work efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a file overflow management system according to an embodiment of the present invention.

FIG. 2 is a correlation diagram of an input / output file and a program according to this embodiment.

FIG. 3 is a configuration diagram of a conventional file overflow management system.

[Explanation of symbols]

 1a File management part a 1b File management part b 2 Runtime routine 3 Processing program 4 File data part 11 File start position storage area 12 Data end position storage area 13 File overflow warning point storage area 14 File end position storage area 21 Processing file 22 Processing program 23 Update file 41 Data area 42 Free area

Claims (1)

[Claims] 1. A file over warning set to notify a program that a file start position indicating a file start position in a magnetic disk device, a data end position indicating a position of final data, and a remaining data addable area are short. A file management unit having a point and a file end position indicating the end position of the file, and updating the corresponding file of the file management unit when the value of the data end position in the file reaches the file over warning point And a runtime routine for notifying a running program that the file overflow warning point has been reached.