JPS63211439A - Resources managing system - Google Patents

Abstract

PURPOSE:To evade a useless consumption of the time to be used for a central processor by deciding beforehand whether all kinds of resources required can be caught or not, before starting a catch processing of resources, when a processing request for necessitating plural kinds of resources is generated. CONSTITUTION:A readable/writable resources state holding memory 1 of an exclusive device for taking charge of a resources management holds an idle or occupied state of resources, an arithmetic circuit 2 calculates whether one piece or more of idle resources exist or not at every kind of resources, based on the contents held by the resources state holding memory 1, and a readable/ writable calculation result holding memory 3 holds the result of calculation by the arithmetic circuit 2 at every kind of resources. In such a state, when a processing request for necessitating plural kinds of resources is generated, a catch processing of resources, which goes to ineffective is evaded by deciding beforehand whether all resources required can be caught or not. In such a way, a useless consumption of the time to be used a central processor of an information processor 4 can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a resource management system, and in particular, when a plurality of resources are present and an arbitrary processing request occurs, the present invention deals with a resource management system that uses at most one resource of the same type when a given processing request occurs.
The present invention relates to a resource management method in an information processing system in which a plurality of different types of resources are used simultaneously.

[Conventional technology]

Conventionally, in this type of resource management method, a part of the memory in the information processing device is used to display whether the resource is free or occupied, and program logic is used to determine whether the resource is free or occupied and to acquire or capture the resource. The release process was being carried out.

FIG. 2 is a diagram illustrating an example of a method for displaying resource status on memory using a conventional resource management method. In FIG. 2, the column number represents the type of resource, and the row number represents the serial number within the type of resource. If the value at the intersection of the column number and row number is "0", it indicates that the resource is in use,
If it is “1”, it indicates that the resource is free.

Further, FIG. 3 is a flowchart showing an example of program logic for performing a resource capture process using a conventional resource management method.

For example, in the resource state shown in Figure 2, resource type 1
, 2.4, and n occur, the resource acquisition procedure is successful for resource types R1, 2, and 4 because there are free resources (step A).

B and C) 0 Then, for resource type n, acquisition fails because all resources are in use (step D);
Therefore, in addition, once captured types 4.2 and 1
(steps E, F and G).

[Problem that the invention seeks to solve]

In the conventional resource management method described above, capture processing is performed sequentially for each type of resource, and after successfully capturing several types of resources, it may fail to capture the next type of resource. Sometimes it is necessary to release the resources that have been captured up to that point, so if there is even one type of resource that has no free space, all previous resource capture processing will be invalidated, and the resource that was once captured will be invalidated. Resource release processing must also be performed, which has the drawback of wasting the use time of the central processing unit of the information processing device.

In view of the above-mentioned points, it is an object of the present invention to check whether all required types of resources can be acquired before starting resource acquisition processing when a processing request requiring multiple types of resources occurs. An object of the present invention is to provide a resource management method that can prevent wasteful consumption of the central processing unit usage time of an information processing device by determining in advance whether or not the central processing unit of an information processing device is used.

[Means for solving problems]

The resource management method of the present invention is applicable to an information processing system that has a plurality of resources and may use at most one resource of the same type and multiple different types of resources when a given processing request occurs. A dedicated device for resource management is provided, and this device has a read/write resource status memory that maintains the free or occupied status of the resource, and a resource status memory based on the contents held in this resource status memory. It has an arithmetic circuit that calculates whether there is one or more available resources for each type, and a read/write arithmetic result holding memory that holds the arithmetic results of the arithmetic circuit for each resource type.

[Effect]

In the resource management method of the present invention, a read/write resource state holding memory of a dedicated device for resource management maintains the status of resources as free or occupied, and an arithmetic circuit is based on the contents held in the resource state holding memory. It is calculated whether there is one or more free resources for each resource type, and the read/write operation result holding memory holds the calculation results by the arithmetic circuit for each resource type.

〔Example〕

Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram showing an information processing system to which a resource management method according to an embodiment of the present invention is applied. In this information processing system, apart from the information processing device 4, a dedicated device (hereinafter referred to as a resource management device) 5 for managing resources is provided. A resource state holding memory 1 whose corresponding row number corresponds to the serial number within the resource type, and an arithmetic circuit 2 that performs an OR operation in the row number direction for all column numbers of the resource state holding memory 1. and an arithmetic result holding memory 3 that holds the arithmetic results of the arithmetic circuit 2 for each column number.

Next, the operation of the resource management system of this embodiment configured as described above will be explained.

In the state shown in FIG. 1, type 1, 2.3. Focusing on resources '4 and n, the arithmetic circuit 2 performs a logical OR operation on all column numbers of the resource status memory 1 in the row number direction in the arithmetic result holding memory 3 of the resource management device 5. The results are stored for each column number. For example, the calculation result holding memory 3 includes seeds fil, 2. It is displayed that there is one or more free resource for seeds 3 and 4, and that there is no free resource for seed 1 inch.

From this state, in the information processing device 4, the resource type 1゜2.4
When a processing request that requires n and n is generated, the information processing device 4 reads the contents of the calculation result holding memory 3 of the resource management device 5, determines in advance that there is no free space for resources of type n, and acquires the resource. No processing is performed. This prevents the capture processing of invalid resources, and the information processing device 4
The central processing unit is not used unnecessarily.

Next, when a processing request that requires the resource types [1 and 4 occurs in the information processing device 4, the information processing device 4 reads the contents of the calculation result holding memory 3, and all resources 1 and 4 have free space. 1, scan column number 1 of the resource status holding memory 1 in the row number direction, find out the position of the row number that has the value "l" first, and set the value of the corresponding position to "0". Captures type 1 resources. Similarly, the resource status holding memory 10 column number 4 is scanned in the row number direction,
First, the position of the line number having the value "1" is known, and the value of the corresponding position is set to "O", thereby capturing the resource of type 4.

When a resource is no longer needed within the information processing device 4, the information processing device 4 stores the resource status holding memory 1 based on the column number and row number of the relevant resource stored at the time of acquiring the resource.
The corresponding resource is released by setting the value of the corresponding position to "1".

Note that the arithmetic circuit 2 performs an operation when the contents of the resource state holding memory 1 are rewritten, and stores the operation result holding memory 3.
Update the contents to show the latest status.

〔Effect of the invention〕

As explained above, the present invention provides a resource status holding memory that can continue writing and holds the status of resources as free or occupied;
A calculation circuit that calculates whether there is one or more free resources for each type of resource based on the contents held in the resource status storage memory, and a read/write function that stores the calculation results of the calculation circuit for each type of resource. Is it possible to acquire all the necessary resources when a processing request that requires multiple types of resources occurs by providing a resource management device that includes a memory for holding calculation results separately from the information processing device? This has the advantage that it is possible to avoid the process of acquiring invalid resources by determining this in advance, and it is possible to prevent unnecessary consumption of the central processing unit usage time of the information processing apparatus.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing an example of displaying resource status on the memory in an information processing device using a conventional resource management method, and FIG. 2 is a flow diagram illustrating an example of program logic for capturing resources according to a resource management scheme. In the figure, 1... resource state holding memory, 2... arithmetic circuit, 3... arithmetic result holding memory, 4... information processing device, 5... resource management device.

Claims (1)

[Claims] In an information processing system that has a plurality of resources and may use at most one resource of the same type and simultaneously use multiple different types of resources when an arbitrary processing request occurs, A dedicated device for management is provided, and this device has a read/write resource status memory that maintains the status of resources as free or occupied, and determines the type of resource based on the contents held in this resource status memory. The invention is characterized by having an arithmetic circuit that calculates whether there is one or more free resources for each resource, and a read/write arithmetic result holding memory that holds the arithmetic results of the arithmetic circuit for each type of resource. Resource management method.