JPH0475155A - Command start-up device - Google Patents

Abstract

PURPOSE:To accelerate the response of a command by providing a memory area in which a program in accordance with the command with high using frequency of a terminal resides. CONSTITUTION:The memory area 6 in which the program in accordance with the command with high using frequency of the terminal 1 resides is provided, and a command start-up part 3 reads out a residing program when the program in accordance with an inputted command resides in the memory area 6, and starts up the terminal 1 by loading it on the process of the terminal 1. In such a way, the memory area 6 in which the program in accordance with the command with high using frequency of the terminal 1 is provided. Thereby, the response of the command can be accelerated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is applied to a command activation device for a time sharing system of an electronic computer.

〔overview〕

The present invention is a command activation device that dynamically makes frequently used commands resident in memory, thereby increasing command response.

[Conventional technology]

Conventionally, a command activation device stores programs for all commands that can be used in a time sharing system in a time sharing program file.

[Problem to be solved by the invention]

However, such conventional command activation devices have the drawback that each time a command is input, a corresponding program is read from a program file, so it takes time to activate a command.

The present invention solves the above-mentioned drawbacks, and aims to provide a command activation device that can speed up command response.

[Means to solve the problem]

The present invention provides an input/output control unit that performs input/output control with a plurality of terminals, a command table that includes command names that can be used in time sharing, and storage locations and sizes of programs corresponding to the command names; Input the file storing the program corresponding to the command name and the command of the terminal through the human output control unit, read out the program corresponding to the input command from the above file based on the contents of the command table, and enter it above. A command activation device comprising: a command activation unit that loads and activates a process of the terminal via an output control unit; The starting unit is characterized in that, when a program corresponding to the input command is resident in the memory area, the starting unit includes means for reading out the resident program, loading it into a process of the terminal, and starting the program.

The present invention also provides a storage means for storing a system program, and a program that reads a program corresponding to the command name from the storage means based on the contents of the command table at the time of starting the time sharing service, stores it in the file, and stores the program in the memory area. a start processing unit that initializes the program, and a determining unit that determines which program resides in the memory area, and the command table determines whether the program corresponding to the command name is located in the memory area or in the file. If a program corresponding to the input command is resident in the memory area based on the contents of the command table, the command starting unit reads the program from the memory area and executes the above command. The program may include means for loading and activating the program into a process of the terminal, activating the determining section when the program is stored in the file, and making the program resident in the memory area based on the resident determination result.

Further, the determining unit may include means for determining and deleting a program to be deleted from the memory area when there is no free space in the memory area to load a resident program.

[Effect]

The command starting unit includes a memory area in which programs corresponding to frequently used commands of the terminal are resident, and when a program corresponding to an input command is resident in the memory area, the command starting unit reads the resident program,
Load it into the terminal process and start it.

Further, the storage means stores a system program, and the start processing unit reads a program corresponding to a command input from the storage means based on the contents of the command table at the time of starting the time sharing service, stores it in a file, and initializes the memory area. The determination unit determines the program that resides in the memory area, and the command activation unit reads the program from the memory area when the program corresponding to the input command is resident in the memory area based on the position information of the command table. , loads and launches the terminal process, launches the decision unit when the program is stored in a file, and resides in the memory area based on its resident legal result.

Further, the determination unit determines and deletes the program to be deleted from the memory area when there is no free space in the memory area to load the resident program.

From the above, you can speed up command responses.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings. 1st
The figure is a block diagram of a command activation device according to an embodiment of the present invention. In FIG. 1, the command activation device includes an input/output control unit 2 that performs input/output control with a plurality of terminals 1, and a program storage location where command names that can be used in time sharing and programs corresponding to the command names are stored. A command table 4 containing the program size as the position and size, a time sharing program file 5 as a file storing the program corresponding to the command name, and a command table 4 in which commands from the terminal 1 are input via the human output control unit 2. A command starting section 3 reads out a program corresponding to the input command from the time sharing program file 5 based on the contents of the input/output control section 2, loads it into the process of the terminal 1, and starts it.

Here, the present invention is characterized by having a resident command memory area 6 as a memory area in which programs corresponding to frequently used commands of the terminal 1 are resident, and a command starting unit 3 that corresponds to the input commands. When the program is resident in the resident command memory area 6, it includes means for loading the resident program into the process of the reading terminal 1 and activating it.

In addition, a system program file 9 is used as a storage means for storing system programs, and a time sharing program file 9 is read out from the system program file 9 based on the contents of the command table 4 at the time of starting the time sharing service. A time sharing start processing unit 8 serves as a start processing unit that initializes the resident command memory area 6.
and a resident command determining unit 7 as a determining unit that determines a program to reside in the resident command memory area 6,
The command table 4 includes a program file storage flag and a part of the program storage location as location information indicating where in the resident command memory area 6 or the time sharing program file 5 the program corresponding to the above command name exists. Based on the contents of the command table 4, if the program corresponding to the input command is resident in the resident command memory area 6, the command starting unit 3 reads the program from the resident command memory area 6 and loads it into the process of the terminal operator. and when the program is stored in the time sharing program file 5, the resident command determination section 7 is activated and the program is resident in the resident command memory area 6 based on the resident determination result.

Furthermore, the resident command determining unit 7 includes means for determining and deleting a program to be deleted from the resident command memory area 6 when there is no free space in the resident command memory area 6 to load the resident program.

The operation of the command activation device having such a configuration will be explained. FIG. 2 is a diagram showing a command table of the command activation device of the present invention. FIG. 3 is a diagram showing the contents of the resident command memory area of the command activation device of the present invention.

FIG. 4 is a flowchart showing the operation of the time sharing start processing section of the command activation device of the present invention. Fifth
The figure is a flowchart showing the operation of the command starting section of the command starting device of the present invention. FIG. 6 is a flowchart showing the operation of the resident command determination section of the command activation device of the present invention.

In FIG. 2, 21 is a command name, 22 is a program file storage flag, 23 is a program storage location, and 24
indicates the program size and 25 indicates the command activation time, and consists of entries for the number of commands.

In FIG. 3, 33 is a memory block, 31 is a free block start pointer, and 3 is a block memory block.
2 indicates the free block final pointer.

First, processing at the time of starting the time sharing service will be described with reference to FIGS. 2 to 4.

■ When the time sharing service is started, the time sharing start processing unit 8 is activated first. The time sharing start processing unit 8 reads a program corresponding to the time sharing system commands that can be used in the system registered in the command table 4 from the system program file 9 and writes it to the time sharing program file 5. It's crowded.

■ At this time, turn on the program file storage flag 22 of the corresponding command in the command table 4,
An address within the file is set in the program storage location 23, and a program size is set in the program size 24.

(2) Next, the time sharing start processing section 8 initializes the resident command memory area 6. That is, the memory area is divided into blocks and addresses are set in the free block start pointer 31 and the free block end pointer 32.

Next, in FIGS. 2, 3, 5 and 6,
Describe how the command is executed.

■ Commands input from the terminal 1 are passed to the command starting section 3 via the human output control section 2.

(2) The command starting unit 3 searches the command table 4 and obtains program starting information corresponding to the command name. That is, the program file storage flag 22 is “on”;
"OFF" determines whether the program is stored in the time sharing program file 5 or exists in the resident command memory area 6.

When "on", the command exists in the time sharing program file 5, and the program storage location 23 in the command table 4 indicates an address within the file.

When "off", the command exists in the resident command memory area 6, and the program storage location 23 indicates an address in the resident command memory area 6.

(2) If the command exists in the time-sharing program file 5, the command starting section 3 calls the resident command determining section 7. The resident command determining unit 7 performs the following processing according to a determined algorithm.

(2) Determine whether or not to load the program corresponding to the command into the resident command memory area 6.

(2) Determine which program on the memory should be deleted when there is no free space in the resident command memory area 6 for loading.

In this embodiment, time sharing program file 5
If there is a command in the memory, the program is always loaded into the resident command memory area 6, and the algorithm that determines the command to be deleted when there is no free space in the memory is LRU (LEAST RESEN-TLY ll5).
This will be explained as the ED RULE) method.

■ When a command exists in the resident command memory area 6, the command starting unit 3 executes the command starting part 3 from the IJ to the program storage location 23 (address in the resident command memory area 6) and from the program size 24 to the terminal usage. loads the program into the user's process and launches the command.

At the same time, the command activation time is set in the command activation time 25 in the command table 4.

■ If the command exists in the time-sharing program file 5, the command starting unit 3 obtains a free block corresponding to the program size of 24 from the free block start pointer 31 of the resident command memory area 6, loads the program, and fills the free block. Rewrite the start pointer 31. At the same time, program storage position 2 in command table 4
3, the first block address in the resident command memory area 6 is set, and the program file storage flag 22 is turned off.

If there is no free block for loading the program, the resident command determining unit 7 searches the command table 4 and selects among the commands existing in the resident command memory area 6 (the program storage flag 22 is "off"). Search for the oldest command with a command startup time of 25 and free the memory. That is, the memory block in which the command was loaded is connected to the free block final pointer 32, and the memory of the command in the resident command memory area 6 is released until the program size to be loaded is secured. After securing memory, the program is loaded into the resident command memory area 6 and the terminal user's process, and the command is activated. At the same time, the program file storage flag 22 of the command table 4 is set to "off", and the start time is set in the command start time 25.

〔Effect of the invention〕

As explained above, the present invention has the excellent effect of speeding up command response.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a command activation device according to an embodiment of the present invention. FIG. 2 is a diagram showing a command table of the command activation device of the present invention. FIG. 3 is a diagram showing the contents of the resident command memory area of the command activation device of the present invention. FIG. 4 is a flowchart showing the operation of the time sharing start processing section of the command activation device of the present invention. FIG. 5 is a flowchart showing the operation of the command activation section of the command activation device of the present invention. FIG. 6 is a flowchart showing the operation of the resident command determination section of the command activation device of the present invention. DESCRIPTION OF SYMBOLS 1...Terminal, 2...Input/output control unit, 3...Command starting unit, 4...Command table, 5...Time sharing program Finenobe 6...Resident command memory area, 7 ...Resident command determination section, 8...
・Time sharing start processing unit, 9...System program fine novel 21...Command name, 22...
Program file storage flag, 23...Program storage location, 24...Program size, 25...Command activation time, 31...Free block start pointer, 32...Free block final pointer, 33... memory block. Fuunii 1 Aniichi stationed command memory area 3 Figure Patent applicant NEC Corporation 7-, - Agent Patent attorney Nao Takashi Ide Figure

Claims (1)

[Claims] 1. An input/output control unit that performs input/output control with a plurality of terminals;
A command table containing command names that can be used in time sharing and the storage location and size of the program corresponding to the command name, a file that stores the program corresponding to the above command name, and the input/output control of the above terminal command. a command activation unit that reads a program corresponding to the input command from the file based on the contents of the command table, loads it into the process of the terminal via the input/output control unit, and starts the program; The command activation device includes a memory area in which a program corresponding to a frequently used command of the terminal resides, and the command activation unit has a memory area in which a program corresponding to the input command resides in the memory area. A command activation device characterized in that it sometimes includes means for reading out this resident program, loading it into a process of the terminal, and activating it. 2. A storage means for storing a system program, and upon starting the time sharing service, a program corresponding to the above command name is read from the storage means based on the contents of the above command table, and is stored in the above file to initialize the above memory area. The command table includes a start processing unit and a determination unit that determines a program residing in the memory area, and the command table has a position indicating where in the memory area or in the file the program corresponding to the command name exists. If a program corresponding to the input command is resident in the memory area, the command starting unit reads the program from the memory area and loads it into the process of the terminal based on the contents of the command table. 2. The command activation device according to claim 1, further comprising means for activating the program when the program is stored in the file, activating the determination unit and making the program resident in the memory area based on a result of determination of residence. 3. The command activation device according to claim 1, wherein the determining unit includes means for determining and deleting a program to be deleted from the memory area when there is no free space in the memory area to load a resident program.