JPH01177653A - Dynamic management system for link pack area - Google Patents

Abstract

PURPOSE:To have a flexibility in the utilization of a virtual storage space and to execute an effective utilization by utilizing a virtual storage space size dynamic change system, changing a link pack area size and thereafter, changing a registration program by means of a link pack area registering means. CONSTITUTION:When a request to change the contents of a program registered to a link pack area 14 is generated in the middle of operating a system, the necessary size of the link pack area 14 sufficient for registering the whole program after the change is executed is calculated. A link pack area current size is changed into the size matched to the necessary size to be calculated, and thereafter, the program related to the change is registered by a link pack area registering means 2. Thus, the change request can be immediately dealt with, the utilization of the virtual storage space can be made to have the flexibility, and the effective utilization can be executed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a link pack area management method in a virtual storage device.

[Conventional technology]

In the virtual storage space of a virtual storage device, there is generally a system shared area that can be shared by each job by specifying the same virtual address, and a job-specific area that is individually occupied by each job. Some system shared areas are provided with a link pack area in which control programs and user programs are registered.

In a conventional virtual storage device that uses a paging method to manage virtual storage space and real storage space on a page-by-page basis and has a link pack area, each page is either a system shared area or a job-specific area. is specified by system parameters during system generation (startup),
This cannot be changed while the system is in operation. Along with this, the size of the link pack area included in the system shared area is also fixed, and as a result, the programs registered in the link pack area are also fixed or limited.

[Problem that the invention seeks to solve]

In the conventional link pack area management method in the virtual storage device described above, the size of the link pack area and the contents of the programs registered in it are all determined at the time of system generation, so the current size of the link pack area (link To add new programs or delete programs that are no longer needed (pack area current size), stop system operation, change the specifications when creating the system, and restart the system. However, it is not always possible to stop a system in operation immediately, and even if a program that you want to register in the link pack area and use immediately appears during system operation,
You may not be able to register in the link pack area, or
Even if registered programs are found not to be used, they cannot be deleted from the link pack area, resulting in a disadvantage that the virtual storage space may be used inefficiently.

[Means for solving problems]

The link pack area management method of the present invention includes a link pack area registration means, a link pack area space management information update means, a link pack area size change means, a link pack area space management information table, and includes a link pack area space management information table. When it becomes necessary to make changes such as registering a new program or deleting registered programs that are no longer needed,
When these change requests are input, in response to this change request, the link pack area registration means performs a predetermined calculation based on information regarding the currently registered program and information regarding the input change request, The required size of the link pack area required when a program is added or deleted is calculated and sent to the space management information updating means. Next, the space management information updating means calculates the required size of the link pack area that is sent to the link pack area and sends it to the space management information updating means. The link pack area allocation size changing means compares the required link pack area size with the link pack area current size, which is the minus size of the current link pack area, and determines the link pack area current size. Determine whether expansion or contraction is necessary, and if necessary, change the link pack area current size,
This change is communicated to the link pack area registration means via the space management information update means, and then the link pack area registration means re-registers the necessary programs in the link pack area or deletes unnecessary programs. Delete and
Next, the space management information update means updates the correspondence between the real storage space and the virtual storage space, the attribute information of the programs registered in the virtual storage space, etc. in the space management information table, thereby updating the system during system operation. The link pack area is managed dynamically.

[Effect]

If a request to change the contents of a program registered in the link pack area occurs during system operation, calculate the required size of the link pack area to register all the programs after making the change, The current size of the link pack area is changed to a size commensurate with the calculated required size, and then the program related to the change is registered, so change requests can be responded to immediately and flexibility can be achieved in the use of virtual storage space. It is possible to make effective use of it.

〔Example〕

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

FIG. 1 is a block diagram of an embodiment of the link pack area dynamic management method of the present invention, and FIG. 2 is a diagram for explaining areas existing in a virtual storage space.

The virtual storage space 12 handled in this embodiment includes a system shared area 13 (size is A) and job specific areas 15a to 15 that are individually occupied by three jobs.
C (with a size of C) and a link pack area 14 (with a size of B) provided in the system shared area 13.

In FIG. 1, functions necessary for managing the above-mentioned virtual storage space are shown in blocks. The inventor of the present application had devised a method for dynamically converting the virtual storage space size before filing this application (Japanese Patent Application No. 61-25612).
No. 4), the present application applies this to a link pack area management system, and therefore the characteristic parts of the present application will be mainly explained below.

The link pack area registration means 2 receives a change request from the operator console 1 and calculates the required size of the link pack area after the change, and finally registers the necessary program to the external disk 11 and stores it in the link pack area 14. It has a function to change the contents of the registered program. The link pack area registration table 4 shows programs 3a and 3 registered in the link pack area 14.
It holds information on the program name of b..., its size on the virtual storage space 12, and the required size D of the link pack area, which is the sum of the sizes of all these registered programs. Further, 1. This link pack area registration table 4 provides an area for temporarily storing information input from the operator console 1. The space management information updating means 5 updates information regarding the virtual storage space 12, and the system shared area space management information updating means 5
a.

Link pack area space management information updating means 5b.

It has at least three types of space management information updating means: job-specific area space management information updating means 5C. The allocation size changing means 6 controls each area 13 on the virtual storage space 12,
14. In order to change the current size of 15a to 15c, the information in the current size storage area 7 is changed. The current size storage area 7 stores the current sizes A, B, and C of each area described above. Also, system shared area space management information table 8. Link pack area space management information table 9
．． Each job-specific area space management information table 10 has attributes of each area, correspondence information with pages on the real storage space, and the like. The attribute refers to information regarding access rights, for example.

Next, the procedure for dynamically managing Link Pack Eritrea will be explained.

(a) New program registration processing step 1 When a new program registration request occurs in the link pack area 14 during system operation and the request is input from the operator console 1, the link pack area registration means 2 first , reads the information held in the link pack area registration table 4 (program name, link back area required size D, etc.), and adds the size of the program to be newly registered to the link pack area required size D of this information. Then, the required size D of the link pack area sufficient to register the changed program is newly calculated and sent to the space management information updating means 5.

Step 2 The space management information updating means 5 transmits the sent required link pack area size to the allocation size changing means 6. Then, the allocation size changing means 6 compares the current size B of the link pack area 14 with the sent link pack area required size D, detects that the current size B is smaller than the required size D, and changes the current size storage area. Change the information in 7 and link pack area 14
Extend and update the current size of . Next, the allocation size changing means 6 notifies the space management information updating means 5 that the current size of the link pack area 14 has been expanded,
The space management information updating means 5 notifies the link pack area registration means 2 of this.

Step 3: The link pack area registration means 2 stores all programs including newly added programs on the external disk 11.
This registration updates the program contents in the link pack area 14. Next, the link pack area registration means 2 notifies the space management information updating means 5 that the program contents have been updated.

Step 4 Next, the space management information updating means 5 updates the contents of the link pack area space management information table 9 (correspondence with real space pages, etc.) using the link pack area space management information updating means 5b.

(b) Partial deletion processing of registered programs Step 1 During system operation, the use of a program registered in the link pack area 14 ends and the program is no longer needed, and a deletion request is input from the operator console 1. Then, the link pack area registration means 2 obtains the size of the target program to be deleted from the link pack area 12, -, , a registration table 4, and subtracts the size of the program from the link pack area required size D. Then, calculate and update the new link pack area size.

Step 2 The space management information updating means 5 notifies the allocated size changing means 6 of the calculated required link pack area size, and the allocated size changing means 6 changes the link pack area current by changing the data in the current size storage area 7. Reduce size B.

Step 3: The link pack area registration means 2 re-registers the deleted program in the external disk 11, thereby changing the program contents of the link pack area 14.

Step 4: The space management information updating means 5 updates the contents of the link pack area space management information table 9.

−13= In this way, during system operation, link pack area 1
It becomes possible to freely change the programs registered in 4.

〔Effect of the invention〕

As explained above, the present invention utilizes the virtual storage space by changing the link pack area size using the virtual storage space size dynamic change method and then changing the registered program using the link pack area registration means. This has the effect of making it more flexible and allowing for more effective use.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the link pack area dynamic management method of the present invention, and FIG. 2 is a diagram for explaining areas existing in a virtual storage space. DESCRIPTION OF SYMBOLS 1... Operator console, 2... Link pack area registration means, 4... Link pack area registration table, 5... Space management information update means, 6... Allocation size change means, 7... Current size storage area, 8... System shared area space management information table, 9.
・・Link pack area space management information table, 10・
...Job-specific area space management information table, 11...
External disk, 12... Virtual storage space, 13... System shared area, 14... Link pack area, 158-15C... Job specific area.

Claims (1)

[Claims] A system comprising, in a virtual storage space, a system shared area that can be commonly used by each job by specifying the same virtual address, and a job specific area that each job individually occupies. The shared area is provided with a link pack area for registering control programs and user programs, and management between the virtual storage space and real storage space is performed on a page-by-page basis, and each page is a system shared area. In a link pack area management method in a virtual storage device in which whether the area is a job-specific area or a job-specific area is specified at the time of system generation by system parameters, a link pack area registration means, a link pack area space management information update means, and a link It has a pack area size changing means and a link pack area space management information table, and when it becomes necessary to register a new program or delete registered programs that are no longer needed during system operation, these changes can be made. When a request is input, in response to this change request, the link pack area registration means performs a predetermined calculation based on the information regarding the currently registered program and the information regarding the input change request, and adds the program. ,
Calculates the required size of the link pack area that will be required in the event of deletion and sends it to the space management information updating means. Next, the space management information updating means changes the sent link pack area required size to the link pack area allocation size. The means to send and resize the link pack area allocation is
Compare the required link pack area size with the link pack area current size, which is the current link pack area size, and determine whether it is necessary to expand or reduce the link pack area current size, and if it is necessary. The current size of the link pack area is changed, this change is communicated to the link pack area registration means via the space management information update means, and the link pack area registration means then installs the necessary program in the link pack area. Then, the space management information update means checks the correspondence between the real storage space and virtual storage space and the programs registered in the virtual storage space in the space management information table. A link pack area dynamic management method that dynamically manages link pack areas during system operation by updating attribute information, etc.