JPH03121557A - Program execution control system - Google Patents

Abstract

PURPOSE:To improve the execution efficiency of the whole system by determining an application program which has specific execution format from a program control table according to a combination of telegraphic message kind information and a memory use rate. CONSTITUTION:A memory use rate display part 27 which indicates the use rate of an execution area (memory resource) being used is provided. Then which of a conversational and a pseudo-conversational application program 25 is used is registered by the kinds of telegraphic messages in a program control table 26 according to the memory use rate and the both are referred to at telegraphic message distribution execution time to select an application program 25 to be executed. Consequently, the execution efficiency of the whole system can be increased without increasing the overhead of the execution time of each individual application program 25 unnecessarily.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention uses a program execution management method, that is, a host computer connected to a terminal via a communication line receives a message sent from the terminal, and processes the message. Program execution management that searches the computer's program library for the corresponding application program based on the message type information in the computer, loads it into the computer's execution area, executes the program, and returns the result to the terminal. It is related to the method.

As an example of such a program execution management system, when a depositor sends a message to the host computer to withdraw a deposit from a bank terminal, the host computer executes the corresponding application program for deposit processing, and the bank terminal's bankbook is saved. When a message is sent from the terminal side to the host computer, such as deposit processing such as recording and displaying the amount withdrawn, or inventory management, etc., the host computer performs the corresponding inventory processing. There are many examples of inventory processing, such as running an application program and outputting the results to a terminal. The present invention relates to such a program execution management method.

[Conventional technology]

Conventionally, as shown in FIG. 4, a computer consists of a terminal 11 and a host computer 13 that receives messages from the terminal via a communication line 12, executes the corresponding application program AP, and returns the processing results to the terminal 11. In the processing method, the corresponding application program AP name is determined from a pre-registered program management control table based on the message type written in the message, searched for from the program library, loaded into the execution area of the computer, and controlled for execution. A method is being adopted.

At this time, if one process consists of exchanging multiple messages with the terminal, the application program AP remains in the execution area (memory) even while sending the message to the terminal and waiting for the next message. Because it occupied resources such as memory, the system as a whole became inefficient (conversational type).

On the other hand, in order to solve this problem, one application program AP is divided into multiple application program APs according to the sending and receiving of messages, and when the messages are sent to the terminal side, the intermediate results of the processing and the corresponding When a message is received from the terminal, the application program AP name to be executed is saved and the execution area is released, and when the next message is received, the application program A is executed.
A method has been adopted in which P is extracted from a program library, loaded in an execution area, and the intermediate result is taken over and executed (pseudo-conversational type).

However, in this case as well, the application program AP
There is a problem in that processing time increases due to loading into the execution area, writing and reading of takeover information.

Here, FIG. 5 shows the structure of the interactive program.

The command RECEIVE MESSAGE (31) is for receiving a message from a terminal.

Further, the instruction 5END MESSAGE (32) is for sending a message to the terminal. A conversational program is one that performs a set of tasks in an IAPO that involves sending and receiving multiple messages to and from a terminal. In this form, the application program AP occupies the execution area even during the period when the application program AP sends a message to the terminal and waits for the message from the next terminal, so it has the disadvantage that the processing efficiency of the entire system is poor. ing.

FIG. 6 shows the structure of a pseudo conversational program. What is a conversational program? A group of tasks that involves sending and receiving multiple messages to and from a terminal is divided into multiple application program APs, and intermediate processing results are saved in the transfer information area between the application program APs and transferred between the application program APs. The task is to complete one set of tasks while taking over the task. Command SET HIKITSUG
I (41) saves the processing results in a specified transfer information area, and then receives a message from the terminal and, when the application program AP is started, transfers the information to the application program AP. .

In this form, when the application program AP sends a message to the terminal and is waiting for the next message from the terminal, the execution area is released and another application program
Since the data is handed over to P, the processing efficiency of the entire system is improved. However, a problem arises in that the overhead for saving and reloading the application program AP and the takeover information increases.

FIG. 7 is an explanatory diagram showing the structure of a conventional program management control table. Conventionally, when the message distribution execution unit receives a message, it reads the message type in the message, refers to the program management control table 50, and determines the AP name (5) corresponding to the message type 51.
2) and was looking for an application program AP that would execute it.

[Problem to be solved by the invention]

The problem with the above conventional technology is that the processing efficiency of the system as a whole deteriorates, that is, the execution of programs is managed in a unique manner without considering the usage rate of the execution area (memory). This occurred in

An object of the present invention is to provide a program execution management method that takes execution area usage efficiency into consideration and can improve the execution efficiency of the entire system without unnecessarily increasing the execution time overhead of individual application programs AP. It is about providing.

[Means to solve the problem]

The above purpose is to provide a memory usage rate display section that shows the usage rate of the execution area (memory resources) in use, and to display either conversational or pseudo-conversational application program AP depending on the memory usage rate for each message type. This problem can be solved by registering in the program management table which application program AP is to be executed, and by referring to both at the message distribution execution time and selecting the application program AP to be executed.

[Effect]

Execution area (memory resources) being used by the message distribution execution unit
Read the value of the memory usage rate display section indicating the usage rate of , refer to the program management table, and select the one corresponding to the memory usage rate from among the application program AP names corresponding to the message type as the application program AP to be executed. By doing so, each application program A
It is possible to realize a program execution management method that improves the execution efficiency of the entire system without unnecessarily increasing the overhead of the execution time of P.

In other words, this means that when the execution area is tight,
If there is sufficient execution space, an application program AP configured using a pseudo-conversation method that increases the execution efficiency of the entire system is started, and an application program AP configured using a conversation method with less processing time overhead is activated.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 4 is a system configuration diagram to which the present invention is implemented, in which a terminal 11 used by a user is connected to a host computer 13 via a communication line 12, and messages are exchanged between the terminal and the host. I explained something earlier.

FIG. 1 is a block diagram showing the configuration of a host computer 13 as a main part of an embodiment of the present invention.

The receiving unit 21 assembles the signals from the terminal into a message and passes the message to the message distribution execution unit 22. The message distribution execution unit 22 reads the message type in the message and sends it to the program management control table 2.
6 and the memory usage rate display section 27, the corresponding application program AP (25) is determined from the program library 24. The details will be described later.

Next, the application program AP identified here is loaded from the program library 24 into the execution area 23 and executed.

FIG. 2 shows the structure of the program management control table 26 in FIG. 1. Here, regarding a certain message type 61,
If the memory usage rate is less than the value registered in 64, AP
The application program AP registered in name 1 (62) is executed, and if the number exceeds this, the application program AP registered in name 1 (62) is executed.
Application program A registered in 63)
This indicates that P is to be executed. That is, here the API
There is an application program A built in an interactive manner.
By registering P and registering an application program AP built in a pseudo-conversation type in AP2, the pseudo-conversation type application program AP can be used when the execution area is tight, and when it is not. An interactive application program AP will be executed. However, it goes without saying that the application programs AP registered here perform the same processing.

In addition, when executing either a conversation type or a pseudo conversation type application program AP uniquely for a certain message type regardless of the memory usage rate, AP name 2 (63)
and the memory usage rate 64 is set to a blank value and APPI3 (62
) shall be filled in with the unique application program AP.

FIG. 3 explains the processing of the message distribution execution unit 22 of FIG. 1, which is a feature of the present invention, using a flowchart.

First, the receiver reads the message type from the message passed from the receiving unit 21 (step 71).

Then, with reference to the program management control table 26, the value a of the memory usage rate 64 corresponding to the message type 61 is determined (step 72). Then, it is determined whether this value a is null, that is, whether the same application program AP is specified to be started regardless of the value on the memory usage rate display section 27.

If it is a null value, the program management control table 26 is used as the application program AP name to be executed.
The application program AP name registered in the API (62) is selected (step 76).

On the other hand, if the value is not a null value, the memory usage rate display section 27 is referred to and the usage rate of the execution area is known (step 74).
), the memory usage rate 64 is compared with the value a (step 75).

If the value a of this memory usage rate 64 is less than the value specified in the program management control table 26, the application program registered in API (62) of the program management control table 26 as the application program AP name to be executed Select program AP name (step 76)
).

On the other hand, if it exceeds the limit, select the application program AP name registered in AP2 (63) (
Step 77).

When the selection of the application program AP name to be executed is completed, the selected application program AP is loaded from the program library 24 into the execution area 23 and executed (step 78).

As explained above, in the present invention, the message distribution execution unit 22
reads the value of the memory usage rate display section 27 indicating the usage rate of the execution area (memory resource) in use, refers to the program management control table 27, and selects the memory among the application program AP names corresponding to the message type. By setting the application program AP to be executed according to the usage rate and selecting the program to be executed while referring to this, when the execution area is tight, the execution efficiency of the entire system can be improved. If there is sufficient execution space, start an application program AP configured with a conversational method with less processing time overhead to overcome the problems of conversational and pseudoconversation types. I can do things.

〔Effect of the invention〕

As described above, according to the present invention, when the execution area is tight, a pseudo-conversation method that increases the execution efficiency of the entire system is used, and when the execution area is free, a pseudo conversation method is used that reduces processing time overhead. It becomes possible to start an application program AP configured in a conversational manner, and it is possible to realize a program execution management method that suppresses the shortcomings of each method and takes advantage of their strengths.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a host computer as a main part of an embodiment of the present invention, FIG. 2 is an explanatory diagram showing the configuration of the program management control table in FIG. 1, and FIG. 3 is a diagram similar to the one shown in FIG. FIG. 4 is a system configuration diagram to which the present invention is implemented, FIG. 5 is an explanatory diagram showing the configuration of an interactive program,
FIG. 6 is an explanatory diagram showing the structure of a pseudo-conversational program, and FIG. 7 is an explanatory diagram showing the structure of a conventional program management control table. Explanation of symbols 13...Host computer, 21...Receiving unit, 22...
- Message distribution execution unit, 23... execution area, 24...
Program library, 25...Application program (AP) 26...Program management control table, 7...Memory usage rate display section, 28...Takeover information area

Claims (1)

[Scope of Claims] 1) A program provided in the computer that receives a message transmitted from the terminal in a host computer connected to a terminal via a communication line, and based on the message type information therein. In a program execution management method that searches for a corresponding application program from a library, loads it into an execution area of a computer, executes the program, and returns the result to the terminal, the execution area currently being used by the computer. Although it is the same application program based on the memory usage rate display section and the message type information,
A program management table in which application programs whose execution formats differ depending on the current memory usage rate are mapped to combinations of message type information and memory usage rate, and the message type from among the messages received from the terminal. In addition to knowing the information, the current memory usage rate at that time is known by referring to the memory usage rate display section, and an application program having a predetermined execution format is selected from the program management table based on the combination of the message type information and memory usage rate. A program execution management method, comprising: a message distribution execution unit that determines the program, searches the program from the program library, and loads the program into an execution area of a computer.