JPS62236040A - Central version type exclusive control method - Google Patents

Abstract

PURPOSE:To facilitate a processing in a lump for resources management at high speed when a system is formed by providing an application right acquisition request entry for a substitute task connected to an ECB via an address. CONSTITUTION:It is supposed that an idle area of about 4 bytes is previously formed within a user program (e) as an ECB 11. When an application right acquisition substitute request is delivered from a task B, the program (e) informs the head address of the ECB 11 to the central version type exclusive control method. Thus this exclusive control method is through within the program (e) as long as the ECB 1 has no program mistake, etc. Here a resources application right information entry is provided to a control table II for task B if the ECB 11 is available. Then an information control entry 10 is provided for the acquisition of the resources application right against a substitute task E. Then the task B is kept waiting if the acquisition of the application right is impossible after reference to the contents of the ECB 11 via an address. While the task B acquires the secondary resources S2 when the application right is obtained.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a management-based exclusive control method for efficiently using a large amount of resources in a transaction processing system of an information processing device, and in particular to a central version type exclusive control method. It is something.

[Conventional technology]

FIG. 3 is a block diagram of a management table (1) for explaining a conventional exclusive control method. Stay busy.

C is an information management entry (hereinafter referred to as "information management entry") regarding the main resource (goods).

(simply referred to as the main resource entry), Cλ) (Jl is the sub-resource (F3t'), (F32
) information management entry (hereinafter simply referred to as sub-resource 2)
IJ), where the main resource (good) is the secondary resource (referred to as IJ).
81) and (8).
= 1.71. (S) and (RI1) are task (4) and (information management entry (hereinafter simply referred to as usage rights acquisition request) IJ regarding the task of acquiring resource usage rights for Bl), respectively. (tl > (4
1 and (f), (91 is the task (support) and (information management engine for information on resource usage rights acquired by Bl), respectively)
IJ (hereinafter simply referred to as IJ).

First, when task (3) issues a request to acquire the sub-resource rs/), the conventional exclusive control method creates resource usage right information (end 1 j) and acquires the right to use the sub-resource (+9/). In order to do so, we will check the previous resource usage right information entry (r) with Deputy Takagen en iJ (ko), and (ha;! (lIi
, (4(1→(jl), for example, (/1 ;= (ko) means that (ha and (ko) are shared with each other), the task prisoner has the right to use the folding resource. Similarly, for the sub-resource (8J)K, the resource usage right information entry (Al is created and the sub-resource usage right information entry) IJ (via sl (G) → (61, (
j) ko(al, (21:(,71) relationship is established.

Cheeso is played between each.

Next, when another task (Bl) issues a request for the sub-resource (81), the exclusive control method creates the resource usage right information end IJ (ff+) as described above.

“3 If you can get it, Cri) → (ff), (ko1
→(za), (ko)-(ri1 [via (c) and (ri)]
Chieso like. In the case of the sub-resource (S), the steps between (3) → (phantom) and (J) → (7) are performed in the same way (RI1 → C-ri). Here, task (Bl is the sub-resource) If (32) is the first time to issue an acquisition request, or if the above-mentioned individual relationships are no longer necessary, there is nothing to go through, so (7) → (c, (ri))
→(91,+91→(3)).

By the way, in order to perform central version exclusive control using this method, the central task (Zl usage right acquisition request entry (
It is necessary to create a new system centered on (not shown). In other words, resource usage rights information end January sl,
(41, (71, (ri1) are created, and as shown in Figure 3, these are assigned to the central - Inform the task.

[Problem that the invention seeks to solve]

In the conventional exclusive control method, the structure is such that exclusive control can only be performed under the responsibility of the task that acquires the right to use the resource (that is, acquires the resource), so each task must acquire the right to use the resource. However, if a central version type system were to be constructed, each task would have to notify the center task of the result of acquiring resource usage rights.

The present invention was made to solve this problem, and a central task (substituted requesting task, ie, substitute task) performs all processes for acquiring resource utilization rights under pressure from other tasks. The purpose of this invention is to provide a central version exclusive control method that can judge the results and control the activation of other tasks all at once.

[Means for solving problems]

The central version exclusive control method according to the present invention, when the delegated task has a PCB area, creates a resource usage right information entry for a certain task and sends a usage right acquisition request (IJ) for one delegated task. After confirming that it is written that it is possible to acquire the %ECBK resource usage rights, cheeso the resource usage rights information entry of a certain task and the usage rights acquisition request entry of the above delegated task, and execute 1 agency. This is a system that lets tasks know that they can acquire resource usage rights.
] In this invention, the control of a task that has issued a request to acquire resource usage rights on behalf of the user is controlled by the ECB in the information in the management table.
By using the address of , it is possible to obtain the usage right even though it is on behalf of the requesting task, and to pass it to the requesting task.

〔Example〕

FIG. 1 is a flowchart for explaining an embodiment of the central version exclusive control method of the present invention. In the figure, (/) to (TE) are the same as in the conventional method.

Figure 1 shows a management table ([[
), in which (10) is a task 17 that acquires resource usage rights on behalf of (a usage rights acquisition requester that manages information on El), and (l/) is a delegated requesting task (
Hereinafter, it is a work area ECB (abbreviation for event control block, an area for writing whether or not the resource, that is, the right to use it) is created in the program corresponding to VC (hereinafter referred to simply as a proxy task), and is Cl0) and ( /
/)' are connected by addresses.

The present invention will be described in detail according to FIG. 1 with reference to FIG. The following describes a central e-version type exclusive control method in which task (El) becomes one of the central tasks and requests resource usage rights from task (Bl).
) is created in the user program (Cl).Now, in step (2/), when task (B) issues a proxy request for acquisition of usage rights, the user program (
e) sets the start address of TrCB (//) to the central
Notify version type exclusive control method. Check 1. in step (c/a) whether ECB (//) exists in the user program (e). If the block B (//) is not created in program 5hz, z, etc., the central version exclusive control method ends. If ECB (//) is present here, step (
, 22), a resource usage right information entry for task (B) is created in the management table (■). Next, an information management entry (10) is created to acquire the right to use resources for one delegated task TEI. In step (2, ta), the content of the ECB (//) is referenced using the address to check whether usage rights are likely to be obtained. If you can't get it yet, you can use the substitute task ((
), in the user interface (software),
The task (Bl) is then made to wait until the resource can be acquired, that is, the right to use the resource is obtained. When confirmed, the resource usage right information entry (
9) and the right-to-use acquisition request entry (10), and in step (is), informs the proxy task C through the user interface that the right to use the resource can be obtained.

Therefore, since (de) and (10) are cheeso, this usage right acquisition information is notified to the task (Bl's usage right acquisition request end January 71), and finally task IBI acquires the subresource (84). You will be able to obtain it.

〔Effect of the invention〕

This invention provides a 1' [I acquisition request line entry for the use of delegated tasks connected to the ECB by address, so that one delegated task can acquire the right to use resources. This has the effect of making batch resource management easier and faster.

[Brief explanation of drawings]

FIG. 1 is a processing flowchart showing the central version exclusive control method of the present invention, and FIG. 2 is a block diagram showing the management table ([Il and the relationship between it and EC'H , FIG. 3 is a block diagram of a conventional management table (Il). In the figure, (10) is an entry for requesting the right to use the proxy task (El), and (//) is EC'B. The same group number indicates the same or similar parts. Figure 1

Claims (1)

[Claims] When a request for acquisition of resource usage rights is received from a certain task, a central task is a proxy task that makes the request on behalf of another task.
A central task that acquires this resource usage right on behalf of the task.
In the version-type exclusive control method, when the substitute task has an ECB area, creating a resource usage right information entry for a certain task,
After creating a usage right acquisition request entry for the delegated task and confirming that it is written in the ECB that resource usage rights can be acquired, create a resource usage right information entry for a certain task and the above delegated task. A central version type exclusive control method characterized by cheating with an entry for requesting a right to use a resource, and notifying a substitute task that it is possible to acquire a right to use a resource.