JPS62169243A - Program loading system - Google Patents

Abstract

PURPOSE:To load a program at the program execution time quickly by providing a function which loads a program on an external memory device to a main memory device and a function which controls plural virtual storage spaces. CONSTITUTION:A program 3a in the external memory device 3 is read into the main memory device 4 by a prepreparation program 5. When the loading of the program 3a is requested in a virtual space 10, a copy program 6 refers to the program 3a existing in the main memory device 4 through an area 11. The second area 12 is secured, and contents of the program 3a are copied to the area 12. Address information included in the contents of the program 3a is rearranged in accordance with the position of the second area 12. Thus, the load processing is performed by data movement on the main memory device and the virtual space to shorten the loading time.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention provides a function to load and execute a program on an external storage device onto a main storage device, and a virtual storage control function to manage a plurality of virtual spaces. The present invention relates to a high-speed program loading method for an information processing system having a computer.

[Prior Art] FIG. 2 is a block diagram showing a conventional program loading method. In FIG. (3) is an external storage device in which the program (3a) is stored.

The conventional program loading method is configured as above,
When executing a specific program (3&) in the virtual space (1), the corresponding program (3a) is transferred from the external storage bag ff (3) to the area (1) in the virtual space prior to execution.
a) Normally this program (3
The load process in a) is executed by the load program (2) at the time of execution.
This is done as necessary via .

[Problems to be Solved by the Invention] As described above, the conventional program loading method loads the upper program (
3a) into the area (1a) on the virtual space (1), this loading process takes time and causes a problem in that performance during execution is degraded.

This invention was made to solve the above-mentioned problems, and aims to provide a high-speed program loading method by eliminating the loading process of reading a program from an external storage device when a load request is made from a virtual space. shall be.

[Means for Solving the Problems] The program loading method according to the present invention includes a preparatory program for loading a program stored in an external storage device into a part of the main storage device, and a preparatory program for loading a program stored in an external storage device into a part of the main storage device. A device comprising a first area in a virtual space that refers to a loaded program, and a copying program that copies the program referenced through the first area to a second area in the virtual space. It is.

[Operation] In the present invention, the preparatory program loads the program on the external storage device into a part of the main storage device in advance, and when the program is requested to be loaded, the copy program
A program loaded in advance into a part of the main storage device can be referenced via a first area from the virtual space that issued the load request, and the program referenced via the first area can be referenced via a second area. Load into.

[Implementation] An embodiment of the present invention will be described below with reference to the drawings. 1st
In Figure 0, which is a block diagram showing an embodiment of the present invention, (3) is similar to the conventional method described above;
10) corresponds to virtual space (1).

(4) is a part of the main storage device, and (5) is a program (3a) stored in the external storage device (3) in advance of the load request.
(6) is a preparatory program for loading part (4) into the main memory, and (6) is the first area (1
This is a copying program for copying a program (3a) on a part (4) of the main storage device to a second area (12) via the main storage device (1).

Next, the operation of the embodiment of the invention shown in FIG. 1 will be explained. First, the program (
3a) is read in advance into a part (4) of the main storage device by a preparatory program (5).

Next, when a request to load the program (3a) occurs in the virtual space (10), the copy program (6) loads the program (3a) that already exists in the part (4) of the main storage device.
The contents can be referenced through the first area (11).

Next, the copying program (6) secures a second area in the virtual space (10) to load the program (3a),
The contents of the program (3a) referenced through the first area (11) are copied to this second area (12).

At this time, the address information included in the contents of the program (3a) is rearranged according to the position of the second area (12).

Incidentally, in the above embodiment, the case where there is one program (3&) on the external storage device (3) is shown, but even if there is a plurality of programs, it is necessary to read the plurality of programs into the main storage device (4) in advance. It can be processed in the same way by setting it to .

Further, although the case where one virtual space m (10) generates a load request is shown, it goes without saying that even if there is a plurality of virtual spaces, the same processing can be performed in each virtual space.

[Effects of the Invention] As described above, according to the present invention, a program is loaded into a part of the main storage device in advance, and when a load request is made, the copy program is loaded into a part of the main storage device via the first area in the virtual space. Since the above program is referenced and copied to the second area, the loading process can be achieved by simply moving data in a part of the main storage device and in the virtual space, resulting in a high-speed program loading method that reduces loading time. There is an effect that can be obtained.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional program loading method.6 (3)...External storage device (3a)...Program (4) ... Part of main storage (5) ... Preparation program (6) ... Copy program (10) ... Virtual space (11) ... First area (12) ... In the second area surface, the same reference numerals indicate the same or corresponding parts in the drawings. 3: External fly + W: Nagaoki

Claims (3)

[Claims] (1) A preparatory program for loading a program stored in an external storage device into a part of the main storage device, and a first preparatory program in a virtual space that refers to the program loaded into a part of the main storage device. an area, and a copy program for copying the program referenced through the first area to a second area in the virtual space; The program loaded in advance into the unit can be referenced from the virtual space that issued the load request via the first area;
A program loading method characterized in that the program is loaded into the second area. (2) The program loading method according to claim 1, wherein a plurality of programs are loaded into a part of the main storage device. (3) The program loading method according to claim 1 or 2, wherein a plurality of virtual spaces issue load requests.