JPH02287842A - File input/output control system - Google Patents

Abstract

PURPOSE:To offer the memo information on a file in response to a request of a main program by preparing a file memo file and obtaining the necessary information to display it on a screen by reference to the file memo file in response to a request of a program which performs the input/output of files. CONSTITUTION:When the input/output of files are required for the started main programs 1a, 1b..., the control is shifted to a file memo control part 3 by the call instructions contained in the main programs. The part 3 inquires whether the memo information is really required or not. If so, the part 3 confirms the presence or absence of a file via a file control file 51. Then the part 3 obtains the necessary information out of a file memo file 52 and saves the screen on a present station 4 to display the obtained information. Thus it is possible to offer the memo information on the files in response to a request of a program which performs the input/output of files.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a file input/output management method, and in particular to a file input/output management method that allows memo information to be easily added and referenced to each file on a magnetic disk in a computer system. Regarding output management methods.

(Prior art) Conventionally, the only information that could be provided to the user as information about each file on a magnetic disk was physical information such as the number of data, file organization, and address. The contents of the file were expressed by engineering the file.

(Problem to be solved by the invention) In the above-mentioned conventional input/output utilization system for a large number of files, it is possible to determine the use of a file created with a song title on a magnetic disk or a file created by oneself in the past.
This has the drawback of being extremely troublesome, as it must be managed by either inferring by looking at the file name, physical information, or the data itself in the file, or by recording it on paper.

(Means for Solving the Problems) A file input/output management method according to the present invention is a file input/output management method in which a large number of files are used for input/output by a large number of people. fifi refers to the file memo file in response to a request from a program that performs file input/output, obtains necessary information, and displays it on the screen.

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

FIG. 1 is a block diagram of a file input/output management system according to the present invention. The file memo addition function in this embodiment consists of a main program group 1, a file input/output management section 2, a station 4 for conversation with the user, a magnetic disk 5 connected to the system, and a main program ( la, 1
．． b, ... is called from the bow and the file memo file 52 is sent via the file management file 51 on the magnetic disk 5.
It is composed of a file memo control section 3 that provides necessary information from.

FIG. 2 is a flow chart of processing by this function. When file input/output is required on the activated main program (la, lb,...) (step 21), control is sent to the file memo control unit 3 using a call command incorporated in the main program in advance. Cross (step 22). The control unit 3 inquires whether the memo information is really needed (step 23), and if it is unnecessary, it returns control to the main program (la, lb, . . .) (step 28).
). If necessary, after confirming the presence or absence of the file via the file management file 51, necessary information is obtained from the file memo file 52, the screen on the current station 3 is saved, and this information is displayed (step 24. 25.26)
. In particular, if the information is not registered, let us know.

After checking the user's screen, step 27) based on the original screen
, returns control to the main program (la, ], b, . . . ) (step 28). After that, the main program (la, lb
,...) performs actual processing through the file input/output management section 2.

FIG. 3 is a structural diagram of a file memo file.

The file memo file 52 has a key part that corresponds to the file registration order of the file management file 51 under the management of the file input/output management section 2, and has a file name, address and size of memo information as key information. A file that has already been deleted from the file management file 51 even if the information remains on the file memo file 52, a file whose file name does not match between the two files, i.e. a file where memo information of an old file remains and the relative information on the file management file 51 is deleted. No memo information is provided for a file where a new file has already been registered.

When registering the file memo file 52, a key is created at a position opposite to the registration position of the file management file 51 of the key part of the memo file, and memo information is registered as data. Any memo content may be registered such as a simple memo regarding the purpose of the file, a usage manual, etc. Even if there is no particular information, it is desirable to create a part of the file as information size 0, and to clear both the key part and the data part when deleting a file.

(Effects of the Invention) As explained above, the present invention can provide memo information regarding files in response to a request from the main program, and
This information can be easily registered and changed as data at any time after the file is defined, and has the advantage that it does not require modification on the main program side.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an embodiment of the file input/output management method according to the present invention, Fig. 2 is a flowchart of processing in this embodiment, and Fig. 3 is a structural diagram of a file memo file in this embodiment. . 1... Main program group, 1. a, lb, ~... Main program, 2... File input/output management section, 3... File memo control section, 4... Station, 5... Magnetic disk, 51... File management file , 52・
...File memo file, 53a 53b, ...
·File.

Claims (1)

[Claims] In a file input/output management method in which a large number of files are used for input/output by many people, a file memo file is provided to store memo information regarding files, and the file memo file is referred to in response to a request from a program that performs file input/output. A file input/output management method characterized by obtaining necessary information and displaying it on the screen.