JPS636614A - Data processing system - Google Patents

Abstract

PURPOSE:To cut off a power supply without giving damage of a data base, etc., by giving a command for end of execution to a job under execution at a time point before the operation is stopped. CONSTITUTION:A data processor contains a CPU 1, a main storage device 2, an automatic operation control mechanism part 3, a power supply 4 and a system control work station 5. The informing time point for previous announcement signal is set at the station 5 and informed to the CPU 1 as a message 100. Thus the CPU 1 gives an instruction to the part for the informing time width of the previous announcement signal by means of a special interface instruction 200. While the part 3 records this time width and produces a power supply cut-off previous announcement signal 300 at a time point earlier than an automatic power supply cut-off time point by said informing time width. When the signal 300 is transmitted, an operating system is started to deliver the end commands to all working on-line programs. As a result, all programs can be surely finished before the power supply is cut off.

Description

DETAILED DESCRIPTION OF THE INVENTION [Graduate field of application] The present invention relates to an automatic power-off means for a computer system.

〔overview〕

The present invention is capable of partially destroying files, databases, etc. at a predetermined time by instructing a job being executed at a time before an operation stop time to end execution in a power cut-off means of an automatically operated data processing device. This allows the power to be turned off without inviting anyone.

[Conventional technology]

In the conventional automatic power-off means for an unmanned computer system, the operating system (hereinafter referred to as O8) sends a command to the automatic operation control mechanism after all jobs submitted to the computer system are finished or at a set time. and turned off the power.

[Problem that the invention seeks to solve]

However, when the power is turned off at the end of all jobs, a system that performs parallel processing using many online programs in unattended operation has the disadvantage that it is difficult to ensure that all of these programs are terminated before the power is turned off.

On the other hand, when the power is turned off at a set time, the processing of unfinished jobs is interrupted, and there is a drawback that files, databases, etc. used by those jobs may be partially destroyed.

SUMMARY OF THE INVENTION The present invention aims to eliminate such drawbacks and provides a data processing method that can turn off the power after a job is completed at a set time.

[Means for solving problems]

The present invention provides a data processing method comprising a data processing device that simultaneously processes a plurality of jobs, and an automatic operation control means that operates the data processing device according to a program, wherein the automatic operation control means comprises a data processing device that processes a plurality of jobs simultaneously. The data processing device includes a notice means for issuing a power cutoff notice signal at a predetermined time prior to a scheduled power cutoff time, and the data processing device is configured to issue a signal instructing termination of the job being executed based on the power cutoff notice signal. and a second control means for issuing a signal instructing forced termination of a job that does not end before the predetermined time; It is characterized by comprising a third control means for issuing a signal instructing disconnection.

[For production]

The data processing device processes multiple jobs in parallel at the same time. Now, when a power cutoff notice signal is sent from the automatic operation control mechanism section to the data processing device a certain period of time before the power cutoff time of the system, a termination command is automatically issued to the online program. All programs that do not terminate despite this process are forcibly terminated, system operation is terminated, and the computer system is automatically powered off at a predetermined time.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a block configuration diagram showing the configuration of an embodiment of the present invention. This embodiment system includes a central processing unit 1, a main storage device 2, an automatic operation control mechanism section 3, a power source 4, and a system control workstation 5.

Now, the advance signal notification time is set at the system control wholesale workstation 5, and the message 10 is sent to the central processing unit 1.
Notified as 0. The O8 receives this message 100 and instructs the automatic operation control unit 3 about the advance signal notification time range using a special interface command 200.

The automatic operation control 1 mechanism section 3 stores this time and issues a power cutoff notice signal 300 at a time earlier than the automatic power cutoff time by this amount of time. This time width is stored in the automatic operation control mechanism section 3 and used repeatedly until it is canceled, changed, or reset. When the power cutoff notice signal 300 is notified, O8 is activated at that time and issues a termination command to all running online programs. Finally, a power-off command 400 is issued according to a command from O3 or at a preset power-off time to turn off the power to the system.

FIG. 2 is a flowchart showing the ○S operation after the warning signal 300 is generated.

〔Effect of the invention〕

As explained above, the present invention has a function of automatically terminating an online program in place of an operator during unmanned operation, and therefore has the effect of making it possible to construct a highly practical unmanned operation system.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. FIG. 2 is a flowchart showing the operation of an embodiment of the present invention. 1...Central processing unit, 2...Main storage device, 3...
Automatic operation control mechanism section, 4...power supply, 5...system control workstation. Patent applicant: NEC Corporation -2 Agent: Patent attorney Naotaka Ide, (,1...
'Let's talk about examples 1 Figure

Claims (1)

[Claims] (1) In a data processing method that includes a data processing device that processes multiple jobs simultaneously and an automatic operation control means that operates this data processing device according to a program, the automatic operation control means is configured to control the data processing device. The data processing device includes a notice means for issuing a power cutoff notice signal at a predetermined time prior to the scheduled power cutoff time, and the data processing device includes a first notice means for issuing a signal instructing termination of the job being executed based on the power cutoff notice signal. and a second control means for issuing a signal instructing forced termination of a job that does not end before the predetermined time; and further, the automatic operation control means powers off the data processing device at the predetermined time. A data processing method characterized by comprising a third control means for issuing a signal for instructing.