JPH02112057A - Data treatment method for on-line system - Google Patents

Abstract

PURPOSE:To reduce the burden of a host computer and to improve data throughput by dispersedly arranging an application program to each work station, and dispersing data processing which is executed to many work stations, to the work station. CONSTITUTION:A work station 3 is equipped with an on-line program means 11 to execute the control of a communication line 7, a program control program means 12 to control the activation and extinction of a program, an application program means 14 to exist in each purpose and a data supplying and receiving means 13 to execute the supplying and receiving data between the on-line program means 11 and the application program means 14 which is called into an idle memory. Then, the work station is connected to a display device 4, an input device 5 to execute data input by an operator and a storage device 6 to house the application program, to which the data processing is executed. Then, the data processing is dispersed to each work station. Thus, the burden to be loaded to the host computer is reduced and the data throughput can be improved.

Description

[Detailed description of the invention] [Industrial application field] The present invention finds use in online processing systems.

The present invention relates to a data processing method in an online system.

〔overview〕

In a data processing method for an online system in which a host computer and workstations are connected via a communication line, the present invention is capable of distributing application programs to each workstation. By distributing data processing to each workstation and executing it, the load on the host computer is reduced and data processing capacity is improved.

[Conventional technology]

Conventionally, this type of online processing system has been a centralized processing method in which a host computer performs system management and data processing, and an operator manually inputs and transmits data from the input device of a workstation according to instructions from the host computer's application program means. By doing so, the host computer's application program means centrally processed data sent from each workstation on the network.

[Problem that the invention seeks to solve]

In the conventional centralized processing method described above, the host computer centrally performs system management and data processing, so as the number of workstations increases due to network expansion, the amount of data sent to the host computer also increases. The load on the host computer also increases,
There is a drawback that data processing capacity is reduced.

The relationship between the load on the host computer and the number of workstations will be explained using FIG. 4. As shown in the flowchart in FIG. Issues an input request (■) from the workstation (WS') and releases the central processing unit (CPU) of the host computer. Central processing bag when an operator manually inputs data from a workstation (WS)! This application obtains the execution right of the CPU (CPU) and processes the information stored in the host computer (after reading it into memory from an external storage device if necessary) using data manually input from the workstation (WS). (2) After doing so, the processed information is written to an external storage device (file) as necessary. Free up the central processing unit (CPU) until the operation is complete. When the writing is completed, the application regains the execution authority of the central processing unit (CPU) and returns to the first preprocessing step (2), completing one cycle of the application (AP) loop.

The above explanation deals with IJ operations (data input from one workstation (WS)), but a host computer application with this structure handles data unique to each connected workstation (WS). By having an area and having a reentrant structure for part of the application procedure, it is possible to easily control multiple workstations.

In other words, the central processing unit (CPU) of the host computer
), or by using the operating system's time slicing function, the central processing unit (CP
The execution rights of U) are switched, making it possible for one host computer application to control multiple workstations (W S ) simultaneously.

Here, the expression "virtual host computer application" means that only a part of the application procedure of one physical host computer is loaded onto the memory, but the workstation (W)
This is used to emphasize that the same application can perform multi-program operations by having a unique data area for each S.

FIG. 4(b) is a time chart illustrating the execution time of one cycle of an application of a host computer having such a structure when two or three workstations (WS) are connected as an example.

In the figure, a white arrow indicates completion of input, and a diagonal arrow indicates completion of input/output operation. As shown in the figure, the workstation (WS)
) increases, the execution time of one cycle of the application of the host computer increases in proportion to the increase, and the operating rate of the central processing unit (CPU) per unit time increases. This results in the drawback that as the number of workstations (WS) connected to the host computer increases, the load on the central processing unit ff1 (CPU) of the host computer increases and the data processing capacity of the entire system decreases.

The present invention aims to eliminate such drawbacks and provides a method that can reduce the load on a host computer and improve its data processing capacity.

[Means for solving problems]

The present invention comprises a host computer comprising application program means and online program means;
In a data processing method of an online system comprising a workstation including a display device and a human-powered device, and the host computer and the workstation are connected via a communication line, the workstation stores an application program corresponding to a business purpose. an online program means for controlling a communication line; an application program means for reading an application program from the storage device; and an instruction from the application program means of the host computer via the online program means. program control program means for selectively activating and extinguishing application program means in the workstation; and the online communication between the application program means of the host computer and the application program means on the workstation started by the program control program means. The present invention is characterized by comprising a data exchange means for exchanging data between the two parties via a program means.

[Effect]

When a data processing request is manually input from the workstation's human-powered device to the host computer's application means, the workstation's on-line program means transmits the data processing request to the host computer.

The application means of the host computer determines the application program means of the workstation and sends an activation request to the workstation. Upon receiving this request, the program control program means loads the application program from the external storage device and starts it up in response to a request from the online program means of the workstation.

Upon this activation, the application program means of the host computer reads the processing data from the storage device, the online program means of the workstation receives it and stores it in the storage means via the data exchange means, and the application program means reads the processing data from the storage device. It receives data, processes it, and stores it in a storage device. The online program means passes this processed data to the application program means via the online program means of the host computer and stores it in the storage device.

If the data processing is finished, the application program means of the host computer sends a request to delete the application to the online program means of the workstation, and the program control program means deletes the application program.

If data needs to be updated subsequently, the process is returned to the application program means of the host computer and the same process is repeated.

By distributing data processing to each workstation in this way, the load on the host computer can be reduced and data processing capacity can be improved.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

In the embodiment of the present invention, a host combination coater 1 and a workstation 3 are connected via a communication line 7.

The host combicoater 1 includes an application program means 8 for managing data processed by the workstation 3.
and a storage device 2 comprising online program means 9 for controlling the communication line 7 and storing processing data IO.
connected to.

The workstation 3 includes an online program means 11 that controls the communication line 7, a program control program means 12 that controls the startup and deletion of programs, an application program means 14 that exists for each business purpose, an online program 11, and an empty memory. A display device 4, an input device 5 for inputting data by an operator, and an application program for data processing are stored. The storage device 6 is connected to the storage device 6.

The operation of the embodiment of the present invention configured as described above will be explained. FIG. 2 shows an example of the flow of data processing according to the embodiment of the present invention.

When the operator issues a data processing request from the input device 5, the online program means 11 issues a data processing start request to the application program means 8 (step 16).
). Upon receiving the request, the application program means 8 notifies the online program means 11 of the name of the application program means 14 to be started, and instructs it to start (step 17). Upon receiving the instruction, the online program means 11 requests the program control program means 12 to start the application program means 14 .

Upon receiving the request, the program control program means 12 loads the application program means 14 from the storage device 6 into the free memory of the workstation 3 (step 18).

The application program means 8 extracts data necessary for processing from the processing data 10 in the storage device 2 and sends the extracted data to the online program means 11, which is loaded into the empty memory. The online program means 11 notifies the data exchange means 13 of the received data (step 19). The application program means 14 performs data processing based on the data from the data exchange means 13 and the data input by the operator from the human-powered device 5, and notifies the data exchange means 13 of the updated data again (step 20). The online program means 11 transmits the data from the data exchange means 13 to the application program means 8, and the application program means 8 replaces the received data with processing data 10 (step 21).

If it is necessary to continue updating the data, the process returns to step 19 and the above operation is repeated, and if it is not necessary, the application program means 8 instructs the online program means 11 to delete the application program means 14 (step 22). Upon receiving the instruction, the online program means 11 requests the program control program means 12 to erase the application program means 14. Upon receiving the request, the program control program means 12 erases the application program means 14 from the memory of the workstation 3 (step 23), thereby ending the series of data processing.

In this way, by storing the application program means 14 in the storage device 6 of each workstation, the processing data 10 held by the host combicoater 1 can be updated at the workstation 3 simply by issuing an instruction from the application program means 8.

FIG. 3 shows the processing flow of the application program means of the host computer according to the embodiment of the present invention. To explain this in comparison with FIG. 4, which describes the conventional technology, (A) In the embodiment of the present invention, as shown in FIG. (B) Input requests from the workstation (WS) and data processing based on input values seen in the conventional example shown in Figure 4 are eliminated, and (C) The unit of reading and writing to external storage devices is changed from record units to blocks. Changes to units.

Comparing (A) and (B), the process in (B) occurs for each data entry, while the process in (A) only occurs once for each workstation (WS) that starts the application on the host computer. Therefore, (A) requires much less execution time than (B). Furthermore, if the change in the processing content in (C) is replaced with a change in the number of inputs and outputs to the external storage device, it can be seen that the processing time in the embodiment of the present invention is shorter than in the prior art system. Therefore, when looking at the entire application program, the central processing unit (CPU) occupation rate of the application program of the host computer can be significantly reduced when the present invention is implemented.

The above explanation focuses on workstations and touches on reducing the load on the host computer's central processing unit, but in a multi-workstation system, reducing the load on the host computer's central processing unit per workstation. However, the background behind the reduction in the load on the central processing unit of a host computer when a plurality of workstations are connected is the same as that shown in FIG. 4 explaining the prior art.

〔Effect of the invention〕

As explained above, according to the present invention, the load on the host computer can be reduced by distributing data processing for a large number of workstations to each workstation, which was previously performed centrally by the host computer. According to the present invention, the greater the number of workstations connected to the host computer, the greater the effect.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. FIG. 2 is a flowchart showing the flow of processing in the embodiment of the present invention. FIG. 3 is a flowchart showing the processing flow of the application program means of the host computer according to the embodiment of the present invention. FIGS. 4(a) and 4(b) are a flowchart showing the flow of application processing in a conventional host computer and a timing chart when a plurality of workstations are used. 1... host computer, 2.6... storage device,
3...Workstation, 4...Display device, 5.
... Input device, 7... Communication line, 8.14... Application program means, 9.11... Online program means, 10... Processing data, 12...
Program control program means, 13... data exchange means.

Claims (1)

[Claims] 1. A host computer equipped with an application program means and an online program means, and a workstation including a display device and an input device,
In an online system data processing method in which the host computer and this workstation are connected via a communication line, the workstation is provided with a storage device for storing an application program corresponding to a business purpose, and further controls the communication line. an online program means; an application program means for reading an application program from the storage device; and an application program means in the workstation that is selected and started based on an instruction from the application program means of the host computer via the online program means. and extinguishing program control program means, and data exchange for exchanging data between the application program means of the host computer and the application program means on the workstation activated by the program control program means via the online program means. 1. A data processing method for an online system, characterized by comprising means.