JPH06324856A - Computer system - Google Patents

Abstract

PURPOSE:To perform the change of a program or that of a data file without interrupting or delaying the processing of a system by providing a program substance corresponding means, a program substance designating means, and a program substance change means. CONSTITUTION:A changed program substance is registered as a prescribed program name by the program substance corresponding means 1. The changed program substance is designated as a program substance to be executed next under the prescribed program name. Thence, the program substance is changed to a feasible state by the program substance change means 3 when the processing of the program substance set in the feasible state at present is completed when it is being processed, and when it is designated when it is set in completion processing, and when an execution request is issued under the prescribed program name, a designated program substance set in the feasible state is executed. Thereby, the change of a program can be performed without generating the omission or delay of corresponding processing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer system which repeats program execution processing or data file access processing intermittently, and particularly suspends or delays the processing of the system when a program or a data file is changed. The present invention relates to a computer system that can be realized smoothly without any problems.

[0002]

2. Description of the Related Art Conventionally, in a computer system in which a program execution process is repeated intermittently, modification of a program in the system is performed by first deleting a registered program and then newly registering the modified program. It is realized by.

On the other hand, in a computer system in which a data file access process is repeated intermittently, in order to change the data file in the system, the access program must be modified if the file itself is changed, and the file data is also changed. However, if the data amount becomes huge, it takes time to update the data, and during that time, access from the program becomes impossible.

From this point of view, in the case of changing the program, if it is necessary to be processed by the program between the deletion of the program and the new registration, the processing cannot be performed or the processing cannot be performed. You will be late. If the program is in the incomplete processing state when the program is deleted, the processing will be interrupted.

This is especially problematic in the case of changing an important program of a real-time system which is performing processing at a high frequency. On the other hand, in the case of changing the data file, if it becomes necessary to access the corresponding data file while making the necessary changes, the processing cannot be performed or the processing is delayed. This is especially problematic in the case of changing important data files of a real-time system which is frequently processed.

[0006]

As described above, the conventional computer system has a problem that the system processing is interrupted or delayed when a program or a data file is changed. .

An object of the present invention is to provide an extremely reliable computer system capable of smoothly implementing a program change or data file change without interrupting or delaying the processing of the system. .

[0008]

In order to achieve the object of the above invention, first, in the invention described in claim 1, in a computer system in which a program execution process is repeated intermittently, a plurality of program entities are included in a program name. A program entity associating means for associating with each other, and a program entity designating means capable of designating a program entity to be executed next, and at the same time, only one program entity is in an executable state,
When a program entity to be executed next is designated by the program entity designating means, a program entity changing means is provided for changing the designated program entity to an executable state when the execution end state of the program is finished. is doing.

Here, particularly in the computer system according to the above-mentioned claim 1, the management which is made up of a program name, a program state, an execution entity name, a registered entity number, a registered entity name, and an entity execution state, and which is managed by each of the means. Composed of a table.

In a third aspect of the present invention, in a computer system in which a data file access process is repeated intermittently, a data file entity associating unit that associates a plurality of data file entities with a data file name, and When the data file entity to specify the data file entity to be accessed to, and only one data file entity can be accessed at the same time, and the data file entity to be accessed next is specified by the data file entity designating means And a data file entity changing means for changing the designated data file entity to the accessible state when the access of the corresponding data file is completed.

Particularly, in the computer system according to the third aspect of the invention, the file name, the access state, the file entity name, the number of registered entities, the registered entity name, and the entity access state are managed by the respective means. Composed of a table.

[0012]

Therefore, in the computer system according to the first aspect of the present invention, the changed program entity is registered as the predetermined program name by the program entity associating means. Then, the program entity designating means designates the changed program entity as a program entity to be executed next under a predetermined program name.

Next, the program entity changing means changes the designated program entity to the executable state when the program entity in the currently executable state is being processed, at the end of the processing, and when it is in the processing termination state at the time of designation. When an execution request is made with a predetermined program name, the designated program entity in the executable state is executed.

As a result, the program can be changed without omission or delay of the corresponding process. On the other hand, in the computer system according to the third aspect of the invention, the changed data file entity is registered as the predetermined data file name by the data file entity associating means. And
The changed data file entity is designated as the data file entity to be accessed next under the predetermined data file name by the data file entity designating means.

Next, by the data file entity changing means, the designated data file is made accessible at the end of the currently accessible data file entity when it is being accessed, and at the time of designation when it is in the access completed state. When changed and an access request comes with a predetermined data file name, the designated data file entity in the accessible state is accessed. As a result, the data file can be changed without omission or delay of the corresponding process.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a functional block diagram showing an example of the configuration of a computer system according to the present invention related to changing a program.

That is, in this embodiment, in the computer system which repeats the program execution process intermittently, as shown in FIG. 1, a program entity associating unit 1, a program entity designating unit 2, and a program entity changing unit 3 are provided.
And a management table 4.

Here, the program entity associating means 1
Is for associating a plurality of program entities (such as load modules) with a program name. Further, the program entity designating means 2 is capable of designating the program entity to be executed next.

Further, the program entity changing means 3 makes only one program entity executable at a time,
When the program entity to be executed next is designated by the program entity designating means 2, the designated program entity is changed to the executable state when the execution state of the corresponding program is completed.

Furthermore, the management table 4 comprises a program name 4a, a program state 4b, an execution entity name 4c, a registered entity number 4d, a registered entity name 4e, and an entity execution state 4f. Is managed by.

Next, the operation of the computer system of the present embodiment configured as described above will be described with reference to the flow chart shown in FIG. 2, taking as an example the case of newly registering and executing a program entity.

In FIG. 1, the program entity associating means 1 registers the changed program entity as a predetermined program name. That is, the program entity name is registered in the registered entity name 4e of the management table 4, and the registered entity number 4d is incremented by one.

Then, the program entity designating means 2 designates the program entity as a program entity to be executed next under a predetermined program name. That is, the entity execution state 4f corresponding to the program entity name in the management table 4 is set to "executable" and the entity execution state 4f corresponding to the program entity name in the "executable" state up to that point.
When f is changed to "executable" and the program state 4b itself is "execution", it is changed to "change required after completion", and when it is "end", it is changed to "immediate change required".

Next, the program entity changing means 3
In the management table 4, when the program status 4b is “change required after completion”, the program execution is terminated, and when it is “immediate change required”, the actual execution status 4f becomes “executable”. The existing program entity name is registered in the execution entity name 4c, and the program state 4b is changed to "finishing".

When an execution request comes in with a predetermined program name, the program state 4b in the management table 4 is set to "in execution", and the program entity registered in the execution entity name 4c is executed. If the program ends while the program state 4b is "running", the program state 4b is changed to "ending".

As described above, the change of the program is realized without omission or delay of the corresponding process, and it is particularly useful in the case of the change of the important program of the real-time system which performs the process at high frequency. Needless to say, the correctness of the processing must be verified before registering the changed program entity.

As described above, in the present embodiment, in the computer system in which the program execution process is repeated intermittently, the program entity associating means 1 for associating a plurality of program entities (load modules etc.) with the program name, Program entity designating means 2 capable of designating a program entity to be executed next, and at the same time, only one program entity is put into an executable state, and program entity designating means 2
When the program entity to be executed next is designated by, the program entity changing means 3 for changing the designated program entity to the executable state at the execution end state of the program, the program name 4a, the program state 4b, execution entity name 4c, registered entity number 4d, registered entity name 4e, and entity execution state 4f.
The management table 4 managed by 2 and 3 is provided.

Therefore, the program can be changed smoothly without interrupting or delaying the processing of the system, and a highly reliable computer system can be obtained.

Next, another embodiment of the present invention will be described. FIG. 3 is a functional block diagram showing an example of the configuration of the computer system according to the present invention regarding the modification of the data file.

That is, in this embodiment, in the computer system in which the access processing of the data file is intermittently repeated, as shown in FIG. 3, the data file entity associating means 11, the data file entity designating means 12 and the data file are The entity changing unit 13 and the management table 14 are provided.

Here, the data file entity associating means 11 associates a plurality of data file entities (files, etc.) with a data file name. The data file entity designating means 12 can designate the data file entity to be accessed next.

Further, the data file entity changing means 13
Makes only one data file entity accessible at the same time, and if the data file entity to be accessed next is designated by the data filter entity designating means 12, when the access end state of the corresponding data file is reached, the designation is made. The created data file entity is changed to an accessible state.

Furthermore, the management table 14 includes a file name 14a, an access state 14b, and a file entity name 14
c, the number of registered entities 14d, the registered entity name 14e, and the entity access state 14f. Each of the above means 11, 12, 13
Is managed by.

Next, the operation of the computer system of the present embodiment configured as described above will be described with reference to the flow chart shown in FIG. 3, taking as an example the case of newly changing the data file entity.

In FIG. 3, the data file entity associating means 11 registers the changed data file entity as a predetermined file name. That is, the data file entity name is registered in the registered entity name 14e of the management table 14, and the registered entity number 4d is incremented by one.

Then, the data file actual state specifying means 12
Thus, the data file entity is designated as a data file entity to be accessed next under a predetermined file name.

That is, the entity access state 14f corresponding to the data file entity name in the management table 14 is set to "accessible", and the entity access state 14f corresponding to the data file entity name in the "accessible" state up to then is "accessible". When the access status 14b itself is "accessing", it is changed to "need to change after completion", and when it is "ending", it is changed to "immediate change".

Next, the data file entity changing means 13 causes the access state 14b in the management table 14.
However, in the case of “change required after completion”, access is terminated, and in the case of “immediate change required” state, the real access state 14
The data file entity name for which f is in the "accessible" state is registered in the file entity name 14c, and the access state 14b is changed to "ending".

Then, when an access request comes in with a predetermined file name, in the management table 14, the access status 14
b is "accessing", and the data file entity registered in the file entity name 4c is executed. When the access is completed while the access state 14b is "accessing", the access state 14b is changed to "finishing".

As described above, the modification of the data file is realized without omission or delay of the corresponding process, and it is particularly useful in the case of the modification of the important data file of the real-time system which processes at high frequency. Needless to say, the accuracy of the processing must be sufficiently verified before changing the changed data file entity.

As described above, in the present embodiment, in the computer system in which the data file access process is repeated intermittently, the data file entity associating means for associating a plurality of data file entities (files, etc.) with the data file name. 11 and a data file entity designating means 12 capable of designating a data file entity to be accessed next.
At the same time, only one data file entity is made accessible, and when the data file entity to be accessed next is designated by the data filter entity designating means 12, the designation is made when the access state of the corresponding data file is completed. Data file entity changing means 13 for changing the created data file entity to an accessible state, and a file name 14a, an access state 14b, a file entity name 14c, a registered entity number 14d, a registered entity name 14e, and an entity access state 14f. Each of the above means 11, 12,
The management table 14 managed by 13 is provided.

Therefore, it is possible to smoothly change the data file without interrupting or delaying the processing of the system, and it is possible to obtain an extremely reliable computer system.

The present invention is not limited to the above embodiments, but can be implemented in the same manner as described below. (A) In the embodiment shown in FIG. 1, the management table 4 includes a program name 4a, a program status 4b, an execution entity name 4c,
Although the case where the number of registered entities is 4d, the registered entity name 4e, and the entity execution state 4f has been described, it goes without saying that the invention is not limited to this.

(B) In the embodiment shown in FIG. 3, the management table 14 has a file name 14a, an access state 14b, a file entity name 14c, a registered entity number 14d, and a registered entity name 1.
4e and the actual access state 14f have been described, but needless to say, the present invention is not limited to this.

[0045]

As described above, according to the present invention, program entity associating means for associating a plurality of program entities with a program name, and program entity designating means capable of designating a program entity to be executed next. , At the same time, only one program entity is made executable, and if the program entity to be executed next is designated by the program entity designating means, the designated program entity is executed when the execution end state of the corresponding program is completed. A data file entity associating means for associating a plurality of data file entities with a data file name, and a data file capable of designating a data file entity to be accessed next Only one data file entity can be accessed at the same time as the entity specification means When the data file entity to be accessed next is designated by the data file entity designating means, the data file that changes the designated data file entity to the accessible state when the access end state of the corresponding data file is reached. Since it comprises the entity changing means, it is possible to provide an extremely reliable computer system capable of smoothly realizing the change of the program or the change of the data file without interrupting or delaying the processing of the system.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing an embodiment of a computer system according to the present invention relating to a change of a program.

FIG. 2 is a flowchart for explaining an operation when changing a program in the same embodiment.

FIG. 3 is a functional block diagram showing an embodiment of a computer system according to the present invention regarding modification of a data file.

FIG. 4 is a flow chart for explaining an operation when changing a data file in the embodiment.

[Explanation of symbols]

1 ... Program entity associating means, 2 ... Program entity designating means, 3 ... Program entity changing means, 4 ... Management table, 4a ... Program name, 4b ... Program state, 4
c ... Execution entity name, 4d ... Registered entity number, 4e ... Registered entity name, 4f ... Entity execution state, 11 ... Data file entity associating means, 12 ... Data file entity designating means, 13
... data file entity changing means, 14 ... management table,
14a ... file name, 14b ... access status, 14c ...
File entity name, 14d ... Registered entity number, 14e ... Registered entity name, 14f.

Claims (4)

[Claims] 1. In a computer system which repeats program execution processing intermittently, a program entity associating unit for associating a plurality of program entities with a program name, and a program entity designation capable of designating a program entity to be executed next. Means, and only one program entity is made executable at the same time, and when the program entity to be executed next is designated by the program entity designating means, the designated program is executed when the execution end state of the corresponding program is reached. A computer system comprising: a program entity changing unit that changes an entity into an executable state. 2. The computer system according to claim 1, further comprising: a management table that includes a program name, a program state, an execution entity name, a registered entity number, a registered entity name, and an entity execution state, and is managed by each unit. A computer system characterized by being provided. 3. A computer system in which data file access processing is repeated intermittently, and data file entity associating means for associating a plurality of data file entities with a data file name and a data file entity to be accessed next are specified. When possible data file entity designating means and only one data file entity are accessible at the same time, and when the data file entity to be accessed next is designated by the data file entity designating means, access of the corresponding data file is performed. A computer system comprising: a data file entity changing means for changing the designated data file entity to an accessible state when in the end state. 4. The computer system according to claim 3, wherein a management table comprising a file name, an access state, a file entity name, a registered entity number, a registered entity name, and an entity access state is managed by each of the means. A computer system characterized by being provided.