JPH0233634A - Open file system at the time of request - Google Patents

Abstract

PURPOSE:To reduce the load of a user at operation of a file and to continuously and easily handle all necessary files by automatically register and release the registration of files to an open/close file control table. CONSTITUTION:When a file operation request is given to a file system 2 from a user, a computer 1 decides whether a file should be opened or not in a file device 3. In the case a designated file is registered into a file control table 4 when the open of the file is required, an operation is applied to the registered file. Mean while the file is opened for registration of the relevant file as long as the table 4 has an idle area in the case the designated file is not registered in the table 4. When the table 4 has no idle area, the optional undesired file registration is released within the table 4 and the file is closed to secure an idle registered area. Then the designated file is opened and registered, and a file operation is applied to the registered file.

Description

[Detailed Description of the Invention] [Industrial Application Field] This yh light relates to a total of C': 1 system system file system.

[Conventional technology]

Conventionally, when manipulating a file in an accounting system, a user obtains access rights to a given file by opening it, and after performing various operations, releases the access rights to the file by closing it.

(Problem that Rming is trying to solve) As mentioned above, in the past, the user was responsible for opening and closing files, so the operation became sloppy, and many files were required (in some cases, the user was responsible for opening and closing files). In addition, in a total zero system that has a limit on the number of files that can be opened at the same time, there is a problem that it is not possible to consecutively handle more files than the limit.

This light was developed in consideration of the above-mentioned conventional technology, and it reduces the burden on the user when operating files, and also handles all the necessary files continuously even in a system that has a limit on the number of files that can be opened at the same time. The purpose is to provide a file system that allows for

(Means for solving the problem) In order to solve the above problem, in the file system related to Komei, in response to a file operation request from a user, the registered area in the file management table is searched and there is a vacant registered area. If there is space, open the specified file and register it in the registration area. On the other hand, if there is no free space in the registration area, the registration of any unnecessary file in the registration area is canceled, the file is closed, the specified file is opened, and the file is registered in the registration area. When the operation on the file is completed, the registration of the file is canceled and the file is closed.

(Function) File opening/closing and registration/unregistration in the file management table are automatically performed in response to the user's operation requests, so the user can open/close the file without being aware of it. can be operated. Additionally, even if there is a limit to the number of files that can be opened at the same time, unnecessary files that are not in use are automatically closed, allowing users to perform operations on all necessary files in succession. .

〔Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a conceptual diagram showing the basic configuration when performing file operations. In the figure, when the user issues a file operation request to the file device 3 via the calculator 1, the file system 2 searches the internally set file management table 4 and automatically opens and registers the file depending on the situation. Do it properly. In other words, if there is space in the registration area of the file management table, open the specified file and register that file; if there is no space in the registration area, register any unnecessary file in the registration area. 31 to close the file, open the specified file, and record the file in the registration area. For example, in a calculation b1 system where there is a limit to the number of files that can be opened at the same time, by setting the number of registration areas in the file management table within the above limit, registration of unused and unnecessary files can be avoided. Since the file is automatically released and the file is closed, the user can perform all required file operations continuously. Furthermore, when the file operation is completed, the file registration is automatically canceled and the file is also closed.

Next, the processing procedure of the file management program that controls the operation of the file system described above is explained in the flowchart shown in Figure 2.
-Explain using the following.

In Figure 2, when a user issues a file operation request to file system 2 (step 1o1)
, the file system 2 determines whether it is necessary to open the file (step 102). Here, if it is determined that there is no need to open a file, the process moves to step 103 and a file operation that does not involve opening a file is performed. On the other hand, if it is determined in step 102 that it is necessary to open a file, the process moves to step 104, and it is determined whether the specified file is already registered in the file management table (1!). I
i do Here, if the specified file has been registered, the process moves to step 108 and operations are performed on the file registered in the file management table. On the other hand, if the file specified in step 104 is not registered in the file management table, then it is determined whether there is space in the file management table (step 1
05). Here, if there is space in the file management table, the process moves to step 107, where the file is opened and registered. On the other hand, if there is no free space in the file management table in step 105, the registration of any unnecessary file in the file management table is canceled, the file is closed, and the <Nk area is vacated (step 106).

Then, the specified file is opened, the file is tabbed (step 107), and a file operation is performed on the file registered in the file management table (step 108).

Note that in the file system according to the present invention, a request to open or close a file can also be requested as a file operation request, so that it can be handled in the same way as a conventional file system.

(Effects of Eye Lighting) As explained above, in the file system according to the present invention, the opening and resetting of files as well as the registration and cancellation of registration in the file management table are automatically performed, so that the user can Files can be manipulated without knowing whether the file is opened or closed, and the burden on the user when manipulating files can be reduced.

Furthermore, even in computer systems where the number of files that can be opened at the same time is limited, unnecessary files are automatically closed, making it possible to continuously handle all necessary files.

[Brief explanation of the drawing]

FIG. 1 is a conceptual diagram showing the basic structure for performing file operations, and FIG. 2 is a flowchart showing the processing procedure of the file management program. 1... Bullet meter, 2... File system, 3...
File device, 4...File management table.

Claims (1)

[Claims] The registration area in the file management table is searched in response to a user's file operation request, and if there is space in the registration area, the specified file is opened and registered in the registration area, and if there is space in the registration area. For example, you can unregister any file in the registration area, close the file, open the specified file and register it in the registration area, and when the file operation is finished, unregister the file and close the file. An open-on-demand file system characterized by closing .