JPH0239347A - Computer network - Google Patents

Abstract

PURPOSE:To execute a program even with such a computer that does not contain all external procedures requested by an execution program by using a means which can use an external procedure execution means of another computer connected via a communication circuit. CONSTITUTION:When a computer of a network executes a program, an external procedure call request given from the program is accepted by an external procedure call request accepting means 1. If the computer which executes the requested external procedure is not equal to its own computer, a command production means 2 produces an external procedure call request command and sends this command to the due computer via a command transmission means 7. Receiving this request command, the computer executes the external procedure designated by said command and sends the result of execution to a command reception means 8. Thus the computer that transmitted the request command receives the result of execution and returns it to the execution program.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is applied to a remote program execution means of a computer network. In particular, it relates to means for executing programs using remote computers.

〔Music required〕

The present invention provides a method for executing an external procedure requested by a program being executed, and when the own computer does not have a means for executing the requested external procedure, the present invention automatically searches for other computers capable of executing the external procedure by referring to a table. By making this selection, you can avoid the hassle of moving programs.

[Conventional technology]

When a program is executed on a computer network system, the program cannot be executed unless the computer system has all the external procedures required by the program being executed. In this case, conventionally, execution of the program is stopped, or the program is sent via remote job entry (RJE) means or the like to a computer equipped with all external procedures required by the program during execution. was running.

[Problem that the invention seeks to solve]

In such conventional program execution methods, if the computer does not have the external procedures that the program to be executed requires during execution, the program cannot be executed. Either move it to another computer system that has all the external procedures required to run it, send it to the RJE hand and run it, or add means to the computer and run it as needed to run the program. It is necessary to complete all external procedures before executing the program. Therefore, moving the program is troublesome, it takes time to execute the program, and the computers on which the program can be executed are limited.

The present invention aims to eliminate these drawbacks and provides a computer network that can automatically execute external procedures on other computers.

[Means for solving problems]

The present invention provides a computer network equipped with a plurality of computers each having a program for issuing a call request related to an external procedure, each of which has a memory that stores a computer and an external procedure executable by this computer in correspondence with each other. means, a reception means for determining a computer that can execute the external procedure requested to be called based on the storage contents of the storage means, and a reception means for making an external procedure call request when the reception means determines another computer as the execution destination of the external procedure. A first command generating function that generates a first command, a first sending means that sends this first command to another computer specified by the receiving means, and an external procedure specified by the incoming first command. a second command generation means for generating a second command for notifying the result of execution by the execution means; and a second transmission means for transmitting the second command to the requesting computer that has transmitted the first command. and a return means for returning the incoming second command to a program included in the device itself.

[Effect]

When a program is executed on one computer in a computer network, the reception means receives an external procedure call request requested by this program, recognizes the type of the external procedure call request, and uses the information stored in the storage means. If the computer that executes the requested external procedure is not the own computer, the external procedure call request is passed to the first command generation means, and the first The command generation hand generates an external procedure call request command based on the external procedure call request and passes it to the first transmitting means. The first sending means sends the external procedure call request defined in the storage means to the computer executing the external procedure call request, the computer to which the external procedure call request command was sent receives the external procedure call request command, and the execution means Execute the external procedure specified by the external procedure call request command, generate an execution result notification command by the second command generation means based on the execution result of the external procedure, and send this execution result notification command to the external procedure by the second transmission means. The external procedure call requesting computer receives the execution result notification command, and uses the return means to return the execution result notified by the execution result notification command to the program that made the external procedure call request. .

〔Example〕

Hereinafter, the present invention will be explained based on the drawings.

Referring to FIG. 1, each computer constituting the computer network to which the present invention is applied includes external procedure call reception means 1, external procedure call request command generation means 2,
External procedure execution means 3, execution result notification command generation means 4
, execution result return means 5, external procedure location storage means 6,
It is composed of command transmitting means 7 and command receiving means 8.

Here, the external procedure call reception means 1 receives an external procedure call request from the program, the execution result return means 5 returns to the program the execution result of the external procedure call request requested by the program, and the command transmission means 7 The external procedure call request command and the execution result notification command can be sent to other computers making up the computer network via line l, and the command receiving means 8 receives the procedure call request command from the other computers making up the computer network. and execution result notification commands.

FIG. 2 is a configuration diagram of the external procedure location storage means 6,
External procedure P1 exists in computer C1, and external procedure P
i exists in computer C1, and external procedure Pn exists in combinator Cn. In this way, information is stored indicating which external procedures reside on which computers.

That is, as shown in FIGS. 1 and 2, this embodiment includes a plurality of computers each having a program that issues a call request related to an external procedure, and each of the computers has a computer and a program that can be executed by this computer. External procedure location storage means 6, which is a storage means for storing external procedures in correspondence with each other, and an external procedure call reception means, which is a reception means for determining a computer that can execute the external procedure requested to be called based on the stored contents of this storage means. Means 1
and an external procedure call request command generating means 2, which is a first command receiving means that generates a first command for requesting an external procedure call when this receiving means determines the execution destination of the external procedure to be another computer. External procedure execution means 3 is an execution means for executing the external procedure specified by the first command, and execution result notification is a second command generation means for generating a second command for notifying the execution result of this execution means. Command generation means 4, a first transmission means for transmitting a first command to another computer determined by the reception means, and a second transmission means for transmitting a second command to the requesting computer that has transmitted the first command. and an execution result return means 5, which is a return means for returning an incoming second command to a program possessed by the device itself.

Next, the operation of this embodiment will be explained based on FIGS. 3 and 4.

Based on the information shown in FIG. 2 stored in the external procedure location storage means 6 of the computer C1, as shown in FIG. Procedure P1 is executed on computer C1, and external procedure P requested by call Pi
1 is executed on remote computer C1 and calls P
The external procedure Pn requested by n is executed on the remote computer Cn.

Figure 4 shows computer
Hereinafter, it will be described as Cy. ) are shown in chronological order. The external procedure call reception means 1 of the CX receives an external procedure call request from the program P, recognizes the type of the external procedure call request, and issues the external procedure call request based on the information stored in the external procedure location storage means 6. determine whether it can be executed on its own computer or must be executed on another computer. In this description, it is assumed that the requested external procedure is specified to be executed in Cy. Since the requested external procedure call cannot be executed by its own computer, the external procedure call receiving means 1 passes the external procedure call request to the external procedure call request command generating means 2. The external procedure call request command generating means 2 generates an external procedure call request command based on the received external procedure call request, and passes the external procedure call request command to the command transmitting means 7. The command transmitting means 7 determines the computer to which the external procedure call request command is to be transmitted based on the information stored in the external procedure location storage means 6. In this description, the requested external procedure execution computer is Cy
Therefore, the command transmitting means 7 transmits the external procedure call request command to cy via the communication line β. The cy receives the external procedure call request command sent from the CX with the command receiving means 8, executes the external procedure indicated by the received external procedure call request command with the external procedure execution means 3, and notifies the execution result of the execution result. The execution result notification command generation unit 4 generates an execution result notification command based on the execution result and passes it to the command transmission unit 7. The command transmitting means 7 transmits this execution result notification command to Cx, which is the source of the external procedure call request, via the communication line β. The CX receives the execution result notification command using the command receiving means 8. Cx command receiving means 8
passes the received execution result notification command to the execution result return means 5, and the execution result return means 5 returns the execution result indicated by the execution result notification command to the program P that made the external procedure call request.

〔Effect of the invention〕

As explained above, in the present invention, when executing a program in one computer, it is possible to use the external procedure execution means of another computer connected through a communication line. This program can be executed even on a computer that does not have all of the required external procedures. or the effort required to transfer the program;
Time and cost can be reduced. ■ Even if an external procedure is partially unusable due to a failure, a program that uses the external procedure can be executed using the external procedure of another computer. ■ An advantage is that any program can be executed on any computer, regardless of the type of external procedure that the program uses during execution or the external procedures that the computer has.

[Brief explanation of the drawing]

FIG. 1 is a block configuration diagram showing the configuration of an embodiment of the present invention. FIG. 2 is an explanatory diagram of the external procedure location storage means. FIG. 3 is an operational overview diagram of the embodiment of the present invention. FIG. 4 is an explanatory diagram of the processing procedure of the embodiment of the present invention. l...External procedure call Reception means, 2... External procedure call request command generation means, 3... External procedure execution means, 4
. . . Execution result notification command generation means, 5. Execution result return means, 6. External procedure location storage means, 7.
...Command transmitting means, 8...Command receiving means, l
...Communication line, P...program. Figure 2

Claims (1)

[Scope of Claims] 1. In a computer network including a plurality of computers each having a program that issues a call request related to an external procedure, each of the computers is configured to correspond to an external procedure that can be executed by this computer. a storage means (6) for storing the external procedure; a reception means (1) for determining a computer that can execute the external procedure requested based on the stored contents of the storage means; a first command generating means (2) for generating a first command for making an external procedure call request at a predetermined time;
), a first transmitting means (7) for transmitting this first command to another computer determined by the receiving means, and an execution means (7) for executing an external procedure specified by the incoming first command.
3), a second command generating means (4) that generates a second command to notify the execution result of the execution means, and a second command generating means (4) that transmits the second command to the requesting computer that has transmitted the first command. A computer network comprising a transmitting means (7) and a returning means (5) for returning an incoming second command to a program of its own device.