JPH0512741B2 - - Google Patents

Description

[Detailed Description of the Invention] [Summary] In a multi-computer system consisting of a host system and a local system, a foreground job of the host system is started from a remote local system, and interaction between an operator and the host job is transferred to the local system. Enable users to share key/display devices.

[Industrial application field]

The present invention relates to a multi-computer system, and more particularly to a remote job startup control method for starting and executable a foreground job in a host system from a local system.

[Conventional technology]

FIG. 3 shows a simplified configuration of an example of a conventional multi-computer system. In the figure, 30 is a host system, 31 is a local system, 32 and 36 are processing units, 33 and 37 are key/display units, 34 is a disk unit, 35 is a printer, 38 is a floppy disk drive, and 39 is a communication line.

The host system 30 and the local system 31 each operate as an independent computer system, but in the case of database processing etc., the host system is activated from the local system via the communication line 39, and data is sent and received between them. It is possible.

The processing device 32 of the host system 30 can start interactive jobs, ie, foreground jobs, via the key/display device 33, but it can also start batch jobs, ie, background jobs, using a disk device 34, a printer 35, etc. Ground jobs can be run in parallel with foreground jobs.

Background jobs on the host system 30 are activated using the key/display device 33, but can also be activated from the key/display device 37 on the local system 31. However, the foreground job of the host system 30 cannot be started from the local system 31. This is because the job screen of the host system 30 cannot be called up on the key/display device 37 of the local system 31.

[Problem that the invention seeks to solve]

In traditional multi-computer systems, each computer system's key/display device is associated with a job running on each system, and the screens of jobs running on other computer systems cannot be called up. It is configured in such a way that it cannot be done.

As a result, interactive jobs that can only be run on the host system, or are more efficient to run on the host system, cannot be launched remotely from the local system, making them difficult for users on the local system. It was a big inconvenience.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention provides two operating modes in the local system, a local mode and a host mode, and in the local mode, a key/display device is coupled to a job running in the local system. In host mode, it connects to a job running on a remote host system.

Normally, the local system is operated in local mode, and when the host system's foreground job is started in this mode, the local mode is switched to host mode, and the host system automatically switches to local mode when the job ends. It is controlled so that it returns to normal.

FIG. 1 is a configuration diagram for explaining the principle of the present invention.

In FIG. 1, 10 is a host system, 11
is a local system, 12 and 16 are processing units, 13 and 17 are key/display units,
14 is a disk device, 15 is a printer, 18 is a floppy device, 19 is a communication line, 20 is a key/display interface control section, 21 is a mode control section, 22 is a mode flag, 23 is a local job processing section, and 24 is a communication control section. represents the division. In addition, the first
The components designated by reference numbers 10 to 19 in the figures correspond to the components designated by 30 to 39 in FIG.

In normal operating conditions when the local system 11 executes its own jobs, the mode flag 22
is set to OFF local mode, and as a result, in the key/display interface control section 20, the key/display device 17 is coupled to the local job processing section 23, and an interactive local job screen is displayed on the display.

A local job is executed in this state, but when a command is input to start a foreground job in the host system 10 by operating the key/display device 17, the mode control unit 21 first responds to the command. and set the mode flag to ON host mode.

As a result, the key/display device 1 in the key/display interface control section 20
The connection between 7 and the local job processing unit 23 is severed, and the key/display device 17 is connected to the communication control unit 24 instead.

Next, a foreground job activation command for the host system 10 is sent to the host system 10 via the communication control unit 24 and the communication line 19.

The host system 10 starts a foreground job and sends screen information of the host job to the local system 11. In the local system, the host job screen information received by the communication control unit 24 is sent to the key/display device 1 via the key/display interface control unit 20.
7 and display it on the display.

At the same time, the local system 11 transfers key information such as commands and data input from the key/display device 17 during the host mode from the key/display interface control section 20 to the host system 10 via the communication control section 24. be transferred.

In this way, the key/display device 17
can be used to run a host job interactively. When the host system 10 notifies that the host job has ended, the mode control unit 21 of the local system 11 resets the mode flag 22 to OFF and returns the local system 11 to local mode.

[Effect]

According to the present invention, a foreground job in a host system can be activated at any time while a local job is being executed in a local system.

In that case, the local system's key/display device interface is switched from the local job to the host system's foreground or host job, and automatically switched back to the local job when the host job is finished.

Also, during this time, local jobs can proceed as long as they do not need to use the key/display device.

This allows you to move a foreground job on a host system that is far away from the local system using the same local system key/display device, and call up the host job screen interactively without special switching operations. When the host job completes the process, the screen automatically returns to the original local job screen, allowing you to immediately continue processing the local job interactively.

〔Example〕

FIG. 2 is a configuration diagram of a system according to an embodiment of the present invention.

In FIG. 2, 10 is the host system, 11
is the local system, 16 is the processing device, 17 is the key/display device, 18 is the floppy device,
19 is a communication line, 20 is a key/display interface control section, 21 is a mode control section, 22 is a mode flag, 23 is a local job processing section, 24
25 represents a communication control unit, and 25 represents a command analysis unit. Reference numbers 10, 11, 16 to 24
is used in common with FIG.

When the command analysis unit 25 identifies a host job startup command inputted from the key/display device 17 via the key/display interface control unit 20 and when it identifies a host job startup command inputted from the host system 10 via the communication control unit 24, When a host job termination command is identified, each host job termination command is notified to the mode control unit 21. Further, when another command is identified in the local mode, it is notified to the local job processing section 23, and the corresponding control is performed.

When the mode control unit 21 receives the host job startup command, it checks the mode flag 22, and when the mode flag 22 is OFF, ie, indicates local mode, it switches it to ON, ie, host mode.

Thereafter, when the host job termination command is identified, the mode flag 22 is restored to OFF.

The value of the mode flag 22 is used in the key/display interface control section 20 to specify the path.

That is, when the mode flag is OFF in the local mode, information input by key from the key/display device 17 is sent to the command analysis section 25, and screen information of the local job output from the local job processing section 23 is sent to the key/display device 17. A path is set so that it is transferred to the display of device 17.

In addition, when the mode flag is ON in the host mode, information input by key from the key/display device 17 is sent to the host system 10 via the communication control unit 24, and is output from the host system 10 via the communication control unit 24. A path is set so that the screen information of the host job that has been sent is transferred to the display of the key/display device 17.

〔Effect of the invention〕

According to the present invention, in a multi-computer system, jobs of the own system and other systems are arbitrarily started using the key/display device of a certain computer system, and the screen of the started job is automatically switched, and each dialogue is performed. Since the job can be executed according to the format, the user's operability can be improved.

[Brief explanation of the drawing]

FIG. 1 is a block diagram for explaining the principle of the present invention, FIG. 2 is a block diagram of a system according to an embodiment of the present invention, and FIG. 3 is a block diagram of an example of a conventional multi-computer system. In FIG. 1, 10...host system, 1
1... Local system, 16... Processing device, 1
7...key/display device, 20...key/
Display interface control unit, 21...Mode control unit, 22...Mode flag, 23...Local job processing unit, 24...Communication control unit.

Claims (1)

[Claims] 1. In a multi-computer system consisting of a host system and a local system, the local system has two operating modes, a local mode and a host mode, and in the local mode, the key/display device of the local system is operated. Binds to and operates on jobs in the local system, and enables the activation of jobs on the host system in local mode, when a request to activate jobs on the host system is entered from a key/display device of the local system in local mode. , switches the operating mode of the local system to host mode, connects the key/display device of the local system to the job started in the host system, and when the job started in the host system ends, the local system 1. A remote job starting control method, characterized in that the operation mode of the remote job is automatically switched to a local mode.