JPH0391048A - Transmission serial number managing system for plural work station controllers - Google Patents

Abstract

PURPOSE:To widely reduce the capacity of a memory to be used in a host computer in the large scale of an online system by providing a waiting means, exclusive control means, serial number input means, serial number adding means, serial number output means, telegraphic message transmitting means and exclusive canceling means in a terminal controller. CONSTITUTION:A serial number management system 3 is composed of a waiting means 11, exclusive control means 12, serial number input means 13, serial number adding means 14, serial number output means 15, telegraphic message transmitting means 16 and exclusive canceling means 17. When a transmission request 100 is sent from a communication processing application program 5 in a certain work station controller 4, the serial number management system 3 in a terminal controller 1 starts a processing. Then, a series of serial transmission numbers can be applied to a transmitting telegraphic message between plural work station controllers 4 and 4 of an online terminal system by these respective means. Thus, in the host computer, the capacity of the memory to be used for a terminal control table widely is reduced.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a transmission sequence number management system for multiple workstation control devices, and particularly relates to an online terminal in which a plurality of workstation control devices are connected under a terminal control device. This invention relates to a transmission sequence number management method for a multiple workstation control device that manages a series of transmission sequence numbers in a system.

[Conventional technology]

Conventionally, in this type of transmission sequence number management system, when communicating with a host computer, a serial number is increased for each work stage control device and assigned as a transmission sequence number to a message (hereinafter referred to as a transmission message). were managed in memory devices within individual workstation controllers.

[Problem to be solved by the invention]

In the conventional transmission sequence number management method described above, the serial number was managed as the transmission sequence number for each workstation controller, so terminal management on the host computer was also performed for each workstage controller, making it difficult to manage large-scale online systems. However, the drawback is that the host computer requires a huge amount of memory for the terminal management table used for terminal management.

In addition, even if an attempt was made to assign a serial number in the online terminal system to the transmitted message as a transmission serial number, since a shared memory device was not provided between multiple workstation controllers, individual workstage controllers It was physically impossible to assign a serial number in an online terminal system to a transmitted message as a transmission serial number using a communication processing application program.

In view of the above-mentioned points, an object of the present invention is to make it possible to assign a series of transmission serial numbers to transmission messages between a plurality of work stage control devices of an online terminal system, and to improve the number of transmission messages for a terminal management table in a host computer. An object of the present invention is to provide a transmission sequence number management method for a plurality of workstation control devices that can significantly reduce memory usage.

[Means to solve the problem]

The transmission sequence number management method for a multiple workstation control device of the present invention includes a terminal control device having a communication control function and a data management function for managing files in a magnetic disk device, and a plurality of workstations connected under this terminal control device. In an online terminal system comprising a workstation control device having a zip management function capable of individually executing a communication processing application program, the terminal control device accepts a transmission request from a communication processing application program in the workstation control device. At the time when the serial number management file in the magnetic disk device is under exclusive control from the communication processing application program in another workstation-based rB device, a waiting means is provided, and the waiting by this waiting means is completed. After that, control the serial number management file to other workstations! Exclusive control means that performs exclusive control from a communication processing application program in W; serial number input means that inputs a transmission serial number from the serial number management file after the serial number management file is subjected to exclusive control by the exclusive III control means; a serial number adding means for adding the transmission serial number input from the serial number adding means; a serial number output means for outputting the transmission serial number added by the serial number adding means to the serial number management file; A message transmitting means for editing the transmission sequence number added by the sequence number adding means into a transmission message and transmitting it to the host computer, and a transmission sequence number after the transmission of the transmission message by the message transmission means to the host computer is completed or by the serial number output means. and exclusive release means for releasing exclusive control of the serial number management file after the serial number management file is output to the serial number management file.

[Effect]

In the transmission sequence number management method for a multiple workstation control device of the present invention, when the queuing means receives a transmission request from the communication processing application program in the workstation control device, the sequence number management file in the magnetic disk device A queue is performed when the communication processing application run program in the station control device is under exclusive control, and after the exclusive control means finishes waiting by the waiting means, the serial number management file is transferred to the communication processing application in another workstation control device. exclusive control from the program, the serial number input means inputs the transmission serial number from the serial number management file after the serial number management file is exclusively controlled by the exclusive control means, and the serial number addition means adds the transmission serial number input from the serial number input means, The serial number output means outputs the transmission serial number added by the serial number addition means to the number management file, and the message transmission means edits the transmission serial number input by the serial number input means or the transmission serial number added by the serial number addition means into the transmission message. The exclusive control of the serial number management file is released by the exclusive release means after the transmission of the transmission message by the message transmission means to the host computer is completed or after the serial number output means outputs the transmission serial number to the serial number management file.

〔Example〕

Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram showing the II4 precepts of an online terminal system to which a transmission sequence number management method for a plurality of workstation control devices according to an embodiment of the present invention is applied. This online terminal system is a terminal connected to a host computer (not shown) via a communication line 2, has a communication control function and a data management function for managing files in a magnetic disk device, and is equipped with a serial number management system 3. a control device 1; a workstation control device 4 having a job management function that is connected to a plurality of devices under the terminal control device 1 and can individually execute a communication processing application program 5;
It consists of a serial number management file 6 connected to the terminal system m device 1 and stored in a magnetic disk device.

Referring to FIG. 2, the serial number management system 3 includes a waiting means 11, an exclusive control means 12, a serial number input means 13,
Serial number adding means 14 and serial number output means 15. ! :, a message transmitting means 16, and an exclusive release means 17. In FIG. 2, reference numeral 100 indicates a transmission request from the communication processing application program 5 within the workstation system 4.

Next, the operation of the transmission serial number management method of the multiple workstation control apparatus of this embodiment configured as described above will be explained.

When a transmission request 100 is sent from a communication processing application program 5 in a certain workstation control device 4, the serial number management system 3 in the terminal control device 1 starts processing.

First, the waiting means 11 determines whether or not the serial number management file 6 is already under exclusive control (m) (occupied) by the communication processing application program 5 in another workstation control device 4, and if it is under exclusive control, Wait until exclusive control is released.

When the queuing means 11 determines that the serial number management file 6 is not under exclusive control from the communication processing application program 5 in another workstation control device 4, or when the exclusive control is canceled, the exclusive control means 12:
The serial number management file 6 is controlled exclusively to prevent the communication processing application program 5 in another workstation control device 4 from using the serial number management file 6 during updating.

The serial number input means 13 inputs the serial number management file 6 after the serial number management file 6 is under exclusive control by the exclusive control means 12.
Enter the current sending sequence number from .

The serial number addition means 14 adds 1 to the current transmission serial number input by the serial number input means 13 to update it.

The serial number output means 15 outputs the transmission serial number added by the serial number adding means 14 to the number management file 6.

The message transmitting means 16 edits the transmission serial number inputted by the serial number inputting means 13 into a transmission message, and transmits the message to the host computer.

The exclusive release means 17 releases the exclusive control of the serial number management file 6 after the message transmission means 16 completes sending the message to the host computer.

In the above embodiment, the message transmission means 16 edits the transmission sequence number input by the serial number input means 13 into a transmission message and sends it to the host computer. The message may be edited into a transmission message and sent to the host computer.

In addition, the exclusive control of the serial number management file 6 is canceled by the exclusive release means 17 after the transmission of the transmitted message by the message transmitting means 16 to the host computer is completed, but the serial number output means 15 does not transfer the transmitted serial number to the serial number management file 6. The exclusive control of the serial number management file 6 may be released after the output of the serial number management file 6.

〔Effect of the invention〕

As explained above, the present invention provides an online terminal system in which a plurality of workstation control devices are connected under one terminal control device. By providing the number adding means 2 serial number output means, the message transmitting means, and the exclusive release means, it is possible to assign a series of transmission serial numbers to the transmitted messages between the plurality of work stage 3 control devices of the online terminal system. The terminal f11m table used for terminal management in the host computer can be provided for each terminal control device instead of for each workstation control device, and the amount of memory used on the host computer in a large-scale online system can be significantly reduced. It is effective.

[Brief Description of the Drawings] Fig. 1 is a block diagram showing the configuration of an online terminal system to which a transmission sequence number management method for a multiple workstation control device according to an embodiment of the present invention is applied; FIG. 2 is a block diagram showing the configuration of a serial number management system in the computer. In the figure, 1...Terminal control device, 2...Communication line, 3...Serial number management system, 4...Work stage II1m device, 5...
Communication processing application program, 6 ・ ・ 11 ・ l 3 ・ 13 ・ 14 ・ 15 ・ 16 ・ 17 ・ 00 Serial number management file, queuing means, exclusive control means, serial number input means, serial number addition means, serial number output means, message transmission means , exclusive release means, and transmission request.

Claims (1)

[Claims] A terminal control device having a communication control function and a data management function for managing files in a magnetic disk device, and a plurality of devices connected under this terminal control device, each of which can individually execute a communication processing application program. In an online terminal system comprising a workstation control device having a job management function, when the terminal control device receives a transmission request from a communication processing application program in the workstation control device, the serial number in the magnetic disk device is determined. A queuing means for queuing when the management file is under exclusive control from a communication processing application program in another workstation control device; and a queuing means for queuing the serial number management file to another workstation control device after the queuing by the queuing means is completed. Exclusive control means that performs exclusive control from a communication processing application program within; Serial number input means that inputs a transmission serial number from the serial number management file after the serial number management file is subjected to exclusive control by the exclusive control means; and From this serial number input means. a serial number addition means for adding the input transmission serial number; a serial number output means for outputting the transmission serial number added by the serial number addition means to the serial number management file; and a transmission serial number input by the serial number input means or the serial number addition. a message transmitting means for editing the transmission sequence number added by the means into a transmission message and transmitting it to the host computer; 1. A transmission sequence number management method for a plurality of workstation control devices, comprising: exclusive release means for releasing exclusive control of the serial number management file after output to the sequence number management file.