JPH02181814A - File restoration system - Google Patents

Abstract

PURPOSE:To close a file to protect it when the main power switch of a power device is erroneously disconnected by disconnecting power based on a file I/O termination signal when the interruption signal of power disconnection is inputted. CONSTITUTION:When power disconnection occurs, the power device 2 supplies the interruption signal of power disconnection to a power supervisory means 3, and the power supervisory means 3 informs a program supervisory means 4 of the effect of power disconnection. The program supervisory means 4 accepts a file I/O request from a present program Pi. When it is under processing, the means 4 requests the restoration processing of file I/O to a peripheral device supervisory means 5. When file I/O is in the middle of execution with a peripheral device 7 based on said information, the peripheral device supervisory means 5 waits for the termination, and issues information on the effect that the restoration processing of file I/O has terminated. The program supervisory means 4 recognizes the termination of the file I/O of all the programs and issues the indication of power disconnection to the power supervisory means 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a file recovery method for an information processing device, and more particularly to a file recovery method for protecting files when power is turned off.

[Conventional technology]

Conventional file recovery methods for information processing devices do not include a process for protecting files by closing them when the main power switch is accidentally turned off while a program is being executed.

[Problem to be solved by the invention]

The file recovery method for such conventional information processing equipment is
If the power is accidentally turned off while the program is running, there is a risk that the file will be destroyed, so you will need to provide a backup method or, if you do not have such a method, create the file again. This required a great deal of effort.

[Means to solve the problem]

In order to solve these problems, the file recovery method of the present invention includes a power supply device that supplies power to an information processing device and inputs an interrupt signal for power-off, and a power supply device that monitors this interrupt signal and receives a file I. A power supply monitoring means that instructs the above power supply device to turn off the power by using the /O termination signal, and a file i/O i from the program.
! receives and analyzes the request, issues a file I/O recovery instruction based on the interrupt signal received from the power supply monitoring means, and monitors the file I/E) end signal generated as a result of this file I/O recovery instruction. A program monitoring means outputs the output to the above power supply monitoring means, and receives a file I/O'ff request and a file I/O recovery instruction from the above program monitoring means according to the file management information, analyzes the request, and sends the file I/O to the peripheral device. a peripheral device monitoring means that outputs a /O recovery instruction, receives a file I/O end code from the peripheral device, and outputs it to the program monitoring means; and file management information storage means for storing and deleting file management information in response to a file I/O end signal.

[Effect]

When receiving an interrupt notification of power-off from the power supply device, if file I/O with a peripheral device is in progress, after that is completed, the power supply device is instructed to power-off.

〔Example〕

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

The figure is a block diagram showing an embodiment of the file recovery method of the present invention. In the figure, 1 is an information processing device, 2 is a power supply device that supplies power to the information processing device and also gives an interrupt signal for power-off, and 3 is a power supply that issues a power-off instruction in response to a power-off interrupt signal. monitoring means, 4 is the program pi (l=x, 2.....+n
), program monitoring means receives an interrupt signal for analyzing a file eva request and powering off, and instructs file I/O recovery;
2. . . ., peripheral device monitoring means for controlling file I/O to the peripheral device T according to n); 6 is a file storing file management information 51 regarding file I/O for each program Pi; It is a management information storage means.

The operation of the file recovery method configured as described above will be explained. First, the program monitoring means 4 accepts and accepts file I/O requests from the program pt.
File I with the peripheral device 7 for the peripheral device monitoring means 5
Gives instructions to control /O. Upon receiving this instruction, the peripheral device monitoring means 5 transfers the file to the peripheral device T! The file management information 51 related to Oki is output to and stored in the file management information storage means 6, and the file I/O is executed with the peripheral device 7 and the completion of the file I/O is monitored. The peripheral device monitoring means 5 detecting the end of the file I/O from the peripheral device 7 issues a file I/O request to the program monitoring means 4 based on the above file management information 51 stored in the file management information storage means 6. At the same time, an instruction to delete the file management information 51 is given to the file management information storage means 6.

The above is the operation from the start to the end of file I/O in the normal case. Next, the operation when one power cut occurs during the above operation will be explained.

When the power supply is cut off, the power supply device 2 gives a power supply cutoff interrupt signal to the power supply monitoring means 3.

The power supply monitoring means 3 detects this interrupt signal and notifies the program monitoring means 4 of the power-off interruption. The program monitoring means 4 that has received this interrupt notification checks whether or not it is currently receiving and processing a file I/O request from the program Pi, and if it is processing it, it notifies the peripheral device monitoring means 5 , requests file I/O recovery processing. The peripheral device monitoring means 5 reads the file management information 51 from the file management information storage means 6, and controls the peripheral device T and the file controller based on this information.
If it is running, wait for it to finish and perform the next file I/O.
, and notifies the program monitoring means 4 that the file I/O recovery process has been completed. Upon receiving this notification, the program monitoring means 4 cancels the processing of the currently running program Pi, confirms the completion of the file L/O recovery processing of all programs, and then sends the power supply monitoring means 3 to the power supply monitoring means 3. Instructs to turn off the power. In response to this power-off instruction, the power monitoring means 3 instructs the power supply device 2 to power off the information processing device 1, and as a result, the power supply device 2 turns off the power.In this way, the information processing device 1 It accepts an interrupt signal when the power is turned off, and if file I/O from a program group is being executed when this interrupt signal arrives, it confirms that all of the I/O has been completed and issues an instruction to turn off the power. .

〔Effect of the invention〕

As explained above, according to the file recovery method according to the present invention, the information processing device that receives the interrupt signal from the high voltage power supply when the power is cut off is able to recover the file with the peripheral device when the interrupt signal arrives. If it has been executed, the configuration will instruct the power supply unit to turn off the power after it is finished, so even if the main power switch of the power supply unit is accidentally turned off, the file will not be closed. It has the effect of being able to protect files by

[Brief explanation of the drawing]

The figure is a block diagram showing an embodiment of the file recovery method according to the present invention. 1.Fist: Information processing device, 2..Power supply device, 3..
...Power supply monitoring means, 4...Program monitoring means, 5
#Fist-1 Peripheral device monitoring means, 6 Life Fist...File management information storage means, 7...ψ・Peripheral it, st, s□,...
..., 5n・Fist...File management information, Pl+P! y
......, Pn fist...program.

Claims (1)

[Scope of Claim] A file recovery method for an information processing device includes a power supply device that supplies power to the information processing device and notifies an interrupt of power-off, and a power supply device that monitors this interrupt notification and terminates file I/O. power supply monitoring means for instructing the power supply device to turn off the power based on a signal; receiving and analyzing a file I/O request from a program; and receiving the interrupt notification from the power supply monitoring means for file I/O recovery; give instructions,
Based on this file I/O recovery instruction, the file I/O
a program monitoring means that monitors an /O end signal and outputs it to the power supply monitoring means; and a program monitoring means that receives the file I/O request and file I/O recovery instruction from the program monitoring means based on file management information, and analyzes and analyzes the same. Peripheral device monitoring means for issuing a file I/O recovery instruction to a peripheral device, receiving the file I/O end signal from the peripheral device, and outputting it to the program monitoring means; and file management information storage means for storing the file management information based on the file I/O end signal and deleting the file management information in response to the file I/O end signal, and when a power-off interrupt signal is input, the file management information is stored in the file I/O end signal.
1. A file recovery method for an information processing device, characterized in that power is cut off based on an /O end signal.