JPH04310134A - File server control method - Google Patents

Abstract

PURPOSE:To carry out the input/output operations of files in parallel with each other to plural file input/output requests. CONSTITUTION:An event detection means 1 detects and identifies a file input/ output request and a signal showing the end of the file input/output processing via a multi-task operating system 7. Then an identification signal is outputted to a server context production/changeover means 2. If the identification signal is identical with a new file input/output request, the means 2 produces a corresponding context. Then the control is shifted to a file input/output start means 3 and the input/output operations of files are started via the system 7. If the identification signal shows the end of the file input/output processing, the context produced by the means 2 in response to the file input/output processing is canceled. Then a file input/output processing end signal output means 4 transmits a file input/output processing end signal to a terminal equipment.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file server control method, and more particularly to a file server control method for controlling input and output of files for a plurality of terminal devices.

0002

2 is an explanatory diagram showing the operation of one example of a conventional file server control method, and FIG. 3 is an explanatory diagram showing the operation of another example of the conventional file server control method.

As a conventional control method for this type of file server, either the control method shown in FIG. 2 or the control method shown in FIG. 3 has been used.

In FIG. 2, a file input/output request detection means 11 is operated under the control of a multitasking operating system 7, which is a program that simultaneously controls multiple information processes.
There is a file server composed of a file input/output control means 12 and a file input/output processing completion signal output means 13, and this file server is connected to a first terminal device 10a and a second terminal device 10b via a communication network 9. and a storage device 8. In FIG. 2, there are only two terminal devices, but two or more terminal devices can be connected via the communication network 9.

For example, the first terminal device 10a requests the storage device 8 to input data as a file or requests the output of data from a file stored in the storage device 8, that is, a file input/output request. is performed, this file input/output request is sent to the communication network 9.
is input to the multitasking operating system 7 via. The multitasking operating system 7 outputs this file input/output request to the file input/output request detection means 11. Here, it is assumed that the first terminal device 10a requests output of data to the storage device 8.

The file input/output request detection means 11 detects this file when the storage device 8 is not operating, that is, when the storage device 8 is not writing input data or reading data that has been written. A first terminal device 1 that receives an input/output request and outputs the file input/output request to the file input/output control means 12
The file input/output control means 12 receives this command and outputs a command to write the data output from the terminal device 10a, that is, the file input, into the storage device 8 requested by the first terminal device 10a. Then, data sent from the terminal device 10a through the communication network 9 is controlled to be written into the storage device 8 via the multitasking operating system 7 as a file input. If the file input/output request from the terminal device 10a is a request to output data stored in the storage device 8, the file input/output control means 12 reads the data in the storage device 8 requested by the terminal device 10a. Control is performed via the multitasking operating system 7, and the read data is sent as a file output via the multitasking operating system 7 to the communication network 9 to the first terminal device 10a.

When these file inputs or file outputs are completed, the file input/output control means 12 sends a signal indicating that the file input/output processing is completed to the file input/output processing end signal output means 13.

File input/output processing end signal output means 13
When receiving this signal, file input/output request detection means 1
1, outputs a file input/output processing end signal indicating that the file input/output processing has ended. The file input/output processing end signal output means 13 sends this file input/output processing end signal to the first terminal device 10a via the multitasking operating system 7 and further via the communication network 9.
Send to.

Here, file input/output request detection means 11
is the first signal when the file input/output processing end signal from the file input/output processing end signal output means is not input.
Even if a file input/output request is sent from the terminal device 10a or the second terminal device 10b, this request is not accepted. That is, in the conventional file server of this type whose control method is shown in FIG. When a file is being input or output to
File input/output requests from other terminal devices connected to this file server will not be accepted, i.e.
At the same time, only file input or output is performed according to a request from one terminal device.

In the conventional file server control method shown in FIG. It is connected to a multitasking operating system 7, which is a program that simultaneously processes the following. The multitasking operating system 7 processes file input/output requests from the first terminal device 10a using the first task 5, and processes file input/output requests from the second terminal device 10b using the second task 6. handles the request. For example, when there is a file input/output request (file input request or file output request) from the first terminal device 10a, the file input/output detection means 14 in the first task 5 detects the request. File input/output detection means 14
When detecting a file input/output request, it activates the file input/output control means 15 and inputs the data input from the first terminal device 10a to the multitasking operating system 7 through the communication network 9 to the storage device 8a as a file. or output the data stored in the storage device 8a as a file output to the communication network 9 via the multitasking operating system 7, and It is sent to the terminal device 10a.

The file input/output control means 15 is a file 8
When the file input/output processing for a is completed, a signal indicating that the file input/output processing has been completed is applied to the file input/output processing end signal output means 16. Upon receiving this output signal, the file input/output processing end signal output means 16 outputs a file input/output processing end signal to the communication network 9 via the multitasking operating system 7, and from this communication network 9 to the first terminal device. Output to 10a.

As described above, when a file input/output request is issued from the second terminal device 10b while the first task 5 is processing a file input/output request from the first terminal device 10a, The second task 6 performs the same processing on a file input/output request from the second terminal device 10b as the first task 5 performed on a file input/output request from the first terminal device. At this time, it was necessary to perform inter-task communication between the first task 5 and the second task 6 using the context switching function of the multitasking operating system 7.

[0013]

[Problems to be Solved by the Invention] In the conventional file server control method explained in FIG. Even if a file input/output request is issued, the above-mentioned request cannot be accepted until the file input/output processing that is already in progress is completed, so file input/output requests from multiple terminal devices are It has the disadvantage that it takes a lot of time for all requests to be executed.

Furthermore, the file server control method described in FIG. 3 requires a program for inter-task communication in the multi-task operating system 7, but it has the disadvantage that this program part is complicated. are doing.

[0015]

[Means for Solving the Problems] A method for controlling a file server according to a first aspect of the invention is to input file input/output requests from a plurality of terminal devices connected to a communication network through a multitasking operating system. In a file server that controls file input/output via a task operating system, a file input/output request signal input at any time from a different terminal device among the terminal devices through the multitasking operating system and this file. In response to the input/output request signal, an event detection means monitors a signal of completion of inputting the file to a storage device that stores the file or a signal of completion of outputting the file from the storage device, and individually identifies these signals. the server context creation switching means receives the identification result, and if the identification result is a file input/output request, each time this file input/output request is received, the server context creation switching means creates a plurality of files created in advance by the context creation switching means. Select an unused file input/output program from among various types of file input/output programs, create a context in which an initial value corresponding to the file input/output request is given to the selected program, and create a context for the selected program. and the file input/output starting means sends a file input/output request signal for each file input or output corresponding to the file input/output request via the multitasking operating system. At the same time, control is transferred to the event waiting means for each terminal device, and the completion of the input or output processing of the file is monitored by the event detection means via the multitasking operating system. When the processing is completed, the server context creation switching means outputs a signal indicating that the processing is completed as the identification signal, and responds to the file input/output request signal from the terminal device on which the file input/output processing has been completed. and cancels the use of the context created by the event detection means, and adds an identification signal to the file input/output processing end signal output means to the file input/output processing end signal output means, which is one of the identification signals from the event detection means, to this file. causing the input/output processing end signal output means to output a signal indicating that the input or output processing of the file has been completed to the terminal device that sent the file input/output request via the multitasking operating system; Even if file input/output processing from one or more of the plurality of terminal devices has not been completed, these file input/output operations may be performed in response to a file input/output request from another terminal device among the plurality of terminal devices. The feature is that output processing is performed in parallel.

[0016]

Embodiments Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an explanatory diagram showing the operation of an embodiment of the file server control method of the present invention.

The file server control method of this embodiment is as follows:
As shown in FIG. 1, a first terminal device 10a and a second terminal device 10b are connected to a multitasking operating system 7 via a communication network 9. The multitasking operating system 7 is installed on the terminal device 10a.
This system also has programs that perform information processing other than processing related to file input/output from and 10b.

This multitasking operating system 7 is a file server consisting of an event detection means 1, a server context creation switching means 2, a file input/output starting means 3, a file input/output processing end signal outputting means 4, and a storage device 8 for storing files. is managed. When a file input/output request signal representing a file input or output request is input to the multitasking operating system 7 via the communication network 9, for example, from the first terminal device 10a, the multitasking operating system 7 This file input/output request signal is applied via the operating system 7.

The event detection means 1 monitors a file input/output request signal and a file input/output processing end signal from the storage device 8 via the multitasking operating system 7 indicating the end of file input or output processing, which will be described later. It identifies the file input/output request signal described above or the file input/output processing end signal described above, and sends a different signal that identifies the terminal device that sent the file input/output request to the server context for each of these signals. Add to creation switching means 2. If the identification signal output from the event detection means 2 is a signal requesting file input/output, the server context creation switching means 2 sends a plurality of signals in advance to control the file input/output processing of the server context creation switching means 2. Select a program that is currently not in use from among the programs, and include information identifying the terminal device that sent the file input/output request signal and the content requested by the terminal device 10a by the file input/output request signal, that is, Depending on whether the data output by this terminal device 10a is stored as a file in the storage device 8, or whether a specific file in the storage device 8 is read and output to this terminal device 10a, the selected program An initial value is given to the file, a context is created, and control is transferred to the file input/output starting means 3. The file input/output starting means 3 performs a process of storing data output from the terminal device 10a as a file in the storage device 8 via the multitasking operating system 7, that is, inputting a file, according to the created context, or The event detection means 1 performs the process of reading out a file specified by the terminal device 10a stored in the storage device 8 and sending the data stored in this file to the terminal device 10a, that is, starting and controlling the output of the file. Move to.

The input or output of this file depends on whether the content of the file input/output request requested by the aforementioned terminal device 10a is file input or output. The multitasking operating system 7 continues to control the above-mentioned file input or output, and when the file input or output to the storage device 8 is completed, the terminal device 1
A signal indicating the end of file input/output regarding 0a is output from the storage device 8 to the event detection means 1 via the multitask operating system 7. When the event detection means 1 receives this signal indicating the end of file input/output, it identifies that the file input/output processing regarding the terminal device 10a has ended, and outputs the identification signal to the server context creation switching means 2. The server context creation switching means 2 cancels the context created for the terminal device 10a based on this identification signal, and sends a signal indicating that the file input/output processing regarding the terminal device 10a has been completed to the file input/output processing end signal outputting means 4. Add. When the above-mentioned signal is applied, the file input/output processing completion signal output means 4 outputs a file input/output processing signal indicating that the processing related to the file input/output request sent by the terminal device 10a via the multitasking operating system 7 has been completed. A termination signal is sent to this terminal device 10a.

[0022] Here, if a file input/output request is sent from the terminal device 10b while the above-mentioned file server is processing the file input/output request sent from the terminal device 10a. In this case, the event detection means 1 detects and identifies this file input/output request and outputs an identification signal to the server context creation switching means 2 in the same manner as described above. The server context creation switching means 2 selects a program different from the program in the context created for the terminal device 10a from among a plurality of programs for file input/output processing created in advance. A context is created that gives the necessary initial values to the program, and control is transferred to the file input/output starting means 3. From then on, the same processing as performed in response to a file input/output request from the terminal device 10a is performed on the terminal device 10a.
This is also done in response to a file input/output request from 0b.

In FIG. 1, the terminal devices are 10a and 10
b, server context creation switching means 2
It is clear that the number of terminal devices may be three or more as long as programs for file input/output processing according to the number of terminal devices are prepared in advance.

[0024]

[Effects of the Invention] As explained above, in the file server control method of the present invention, when the server context creation switching means is in the middle of processing based on a file input/output request from a certain terminal device, This method also has the effect of being able to process file input/output requests from other terminal devices without requiring communication between tasks.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the operation of an embodiment of the file server control method of the present invention.

FIG. 2 is an explanatory diagram showing the operation of a conventional file server control method of this type.

FIG. 3 is an explanatory diagram showing the operation of a conventional file server control method different from that shown in FIG. 2;

[Explanation of symbols]

1 Event detection means 2 Server context creation switching means 3
File input/output start means

Claims (1)

[Claims] 1. A file server that receives file input/output requests from a plurality of terminal devices connected to a communication network via a multitasking operating system and controls file input/output via the multitasking operating system. In the method, a file input/output request signal is input at an arbitrary time from a different terminal device among the terminal devices through the multitasking operating system, and a file input/output request signal is inputted to a storage device that stores a file in response to the file input/output request signal. Monitoring an end signal of the input of the file or an end signal of the output of the file from the storage device by the event detection means, individually identifying and outputting these signals, and receiving the identification result by the server context creation switching means; If the identification result is a file input/output request, each time this file input/output request is received, an unused file input/output is selected from among multiple types of file input/output programs created in advance by the context creation switching means. A context is created in which an initial value corresponding to the file input/output request is given to the selected program, a file input/output start means is started according to this context, and the file input/output start means starts inputting or outputting files corresponding to the file input/output requests via a multitasking operating system for each of the terminal devices that sent the respective file input/output request signals, and transfers control to the event waiting means; The end of the input or output processing of the file is monitored by the event detection means via the multitasking operating system, and when the input or output processing of the file is completed, a signal indicating that the processing has ended is sent to the server context. causing the creation switching means to output the identification signal as the identification signal to cancel the use of the context created in response to the file input/output request signal from the terminal device that has completed the file input/output processing, and the event detection means The file input/output processing end signal output means sends out the file input/output request by adding an identification signal indicating that the file input/output processing has been completed, which is one of the identification signals from the file input/output processing end signal output means, to the file input/output processing end signal output means. A signal indicating that the file input or output processing has been completed is outputted to the terminal device through the multitasking operating system, and file input from one or more of the plurality of terminal devices is performed. A file server characterized in that file input/output processing is performed in parallel in response to a file input/output request from another terminal device among the plurality of terminal devices even if the output processing has not been completed. Control method.