JPH0275036A - Number control processing method - Google Patents

Abstract

PURPOSE:To facilitate the reuse of the existing numbers which are not necessary for scan of a bit train by preparing the bits equal to the number of pieces of desired numbers and showing the using state of the corresponding number based on the value of each bit. CONSTITUTION:A bit train contains the bits equal to the number of pieces of desired numbers and shows the using state of the number which is decided by the value of each bit and in response to the value showing the bit position. When a new number is produced, the bit train is scanned and a single bit of the value showing an unused state is detected for output of the number decided in response to the bit. Then the using number is cancelled. In such a case, the corresponding bit is updated to the value that shows an unused state. Thus the reuse of the undesired existing numbers is facilitated and at the same time the number of pieces of advantageous numbers can be easily recognized.

Description

[Detailed Description of the Invention] [Summary] Concerning the management of automatic number issuance in computers: 1. When issuing numbers to avoid duplication, it is possible to easily reuse already issued numbers that are no longer needed; The purpose of the number management processing method is to make it easy to grasp the number of valid numbers, etc., and in the processing of a computer that issues a predetermined number that does not overlap, it has the number of bits of the number required to be issued, and each bit A bit string indicating the usage status of the number determined corresponding to the value representing the bit position of the focus is provided, and when issuing a new number, the bit string is scanned to indicate unused. If you want to detect one bit of the value, update the bit to a value indicating that it is in use, output the number that is determined according to the detected bit, and cancel the number that is in use, update the bit string. The bit corresponding to the number to be canceled is updated to a value indicating unused.

[Industrial application field]

The present invention relates to a number management processing method for automatically issuing numbers in a computer.

In a computer, numbers in a predetermined format are automatically generated and issued sequentially in a serial number format as identification names for files used in internal processing or as keys for data records. It is necessary to manage numbers to avoid generating duplicate numbers.

[Problems to be solved by conventional technology and the invention] For example, in a computer system for program maintenance, it is possible to have a database consisting of correction data for program correction, and to be able to search for necessary correction data from fault information. In order to do this, each modified data record is managed by being assigned a unique key.

FIG. 3 is a block diagram showing an example of the configuration of a computer system, and the number management unit 1 stores the last assigned number value 2 in a predetermined file 3 of an external storage device, for example. Every time a new number is required due to a new input of modified data, the number management unit 1 reads the number value 2 from the file 3 in response to a number issuance request, and increments the number by 1 in serial number format. generate and output that number as the key of the record,
By saving the latest number value 2 in file 3 again, the number is managed so that duplicate numbers are not issued.

FIG. 4 shows the flow of the above-mentioned processing of the number management unit l. In processing step 10, the previous number value 2 is read from file 3, in processing step 11, 1 is added to that number value, and in processing step 12, the previous number value 2 is read out from file 3. This is output as a new number, and in processing step 13, the new number value is written to file 3 and saved.

As described above, it is possible to issue unique numbers, but in cases such as the above example of corrected data, it may be canceled due to an error in the corrected data, etc. The number assigned as a key to a record deleted by cancellation is no longer needed.

However, there is no mechanism to reuse numbers that are no longer needed, and new numbers must always be generated using them as unused numbers. Oh (I need it.

The present invention provides a number management processing method that makes it easy to reuse already issued numbers that are no longer needed when issuing numbers to avoid duplication, and also makes it easy to keep track of the number of valid numbers, etc. purpose.

[Means to solve the problem]

FIG. 1 is a process flowchart showing the configuration of the present invention.

The figure shows the flow of processing by the number management section, and 20 to 28 are processing steps.

[For production]

In the processing of a computer that issues a predetermined unique number, the number has the same number of bits as the number that needs to be issued, and the use status of the number is determined by the value of each bit, corresponding to the value representing the bit position of the bit. Create the bit string shown and save it in a file.

When managing numbers, the number management unit first reads the bit string in processing step 20, and if it is identified in processing step 21 that there is a request to issue a new number, it scans the bit string in processing step 22 and indicates that it is unused. One bit having a value is detected, and in processing step 23 that bit is updated to a value indicating that it is in use.

In processing steps 24 and 25, a number determined corresponding to the detected pip i is output.

Further, if the number in use is no longer needed and there is a request for cancellation, the bit corresponding to the number to be canceled in the bit string is updated to a value indicating unused in processing steps 26 and 27. In either case, the bit string is written out and saved in the subsequent post-processing step 28.

As described above, it becomes possible to easily reuse missing numbers, and the situation such as the number of valid numbers and the number of records using those numbers can be easily grasped from the bit string.

〔Example〕

FIG. 2 is a block diagram showing an example of the configuration of a computer system, in which the number management unit 30 generates a bit string 31 having as many bits as the required number, and first indicates that all bits are unused. Set it to 0" and store it in file 3.

For example, in a corrected data database system, each time a new corrected data record is input and a number is required, the number management unit 30 receives a number issuance request and extracts the bit string 31 from the file 3 in step 20 of FIG. When it is read and identified as a number issuance request in processing step 21, the bit string 31 is scanned from the first bit in processing step 22 to determine the bit position of the first bit whose bit value is “0°”.

This process, for example, sets the register that specifies the bit position to 1.
The bit value is tested from the first bit, and if the bit value is "1", the register value is set to 1 and the specified bit position is advanced, and the process is repeated until the bit value becomes "0". If so, the bit position of the first bit whose value is "0" can be obtained from the value remaining in the register when exiting from the repetition by the usual method of removing from the repetition.

Once the bit position is determined, in processing step 23 that bit is updated to "1" indicating that it is in use, and in processing step 24 a number to be determined corresponding to that bit position is determined. The number is determined by, for example, using the value representing the bit position as the number, or by adding a certain bit string to the throne if necessary.

After outputting the number determined above in processing step 25, the updated pill column 31 is written to file 3 in processing step 28.

Further, when the number in use is no longer needed and cancellation of the number is requested, the number management section 30 performs processing step 21.
Proceeding to processing step 26, the bit position of the bit string 31 corresponding to the number specified for cancellation is determined, and in processing step 27, the corresponding bit in the bit string 31 is set to "0",
In processing step 28, bit string 31 is written to file 3.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, in the management of automatic number issuance in a computer, it is possible to easily reuse already issued numbers that are no longer needed through bit string scanning, and at the same time, it is possible to easily reuse already issued numbers that are no longer needed by bit string scanning. There is a significant industrial effect in that it becomes possible to easily grasp the number of records, etc. that use those numbers from the bit string.

[Brief explanation of the drawing]

Fig. 1 is a flowchart of processing showing the configuration of the present invention, Fig. 2 is a block diagram of an example configuration of a computer of the invention, Fig. 3 is a block diagram of an example configuration of a conventional computer, and Fig. 4 is a flowchart of conventional processing. It is. In the figure, 1.30 is the number management section, 2 is the number value, 3 is the file,
31 is a bit string, 10 to 13, 20 to 28 are processing steps, 7 Processing flowchart showing the configuration of the present invention Fig. 1

Claims (1)

[Claims] In the processing of a computer that issues a predetermined unique number, the computer has the same number of bits as the number that needs to be issued, and the value of each bit corresponds to a value representing the bit position of the bit. A bit string is provided to indicate the usage status of the number determined by
0), when issuing a new number (21), scans the bit string (22), detects 1 bit of value indicating unused, and updates the bit to a value indicating in use ( 23), and outputs the number determined corresponding to the detected bit (24, 2).
5) When canceling the number in use (21), the bit string corresponding to the number to be canceled is updated to a value indicating unused (26, 27). Characteristic number management processing method.