JPS5814391A - Buffer managing system - Google Patents

Abstract

PURPOSE:To uniform the loan service for an area and to improve the efficiency in use of a storage area, by the system that cut-out possible areas are duplicatedly assured corresponding to types of each request in an area memory. CONSTITUTION:When a request of offer of storage area enters an area request reception section ATS, the attribute and size of this request are picked up and the size is given to a request area output section DMS. The request output section seeks the attribute column ATT in an area memory MEM and picks up a value of an area column DMN corresponding to the attribute. A whole area X is from address alpha to address epsilon of the storage area. For a certain cutout area A, the address alpha - the address gamma are the area permitted for output, and for the cutout area B, the address beta - the address delta are permitted, for the cutout area C the address gamma - the address epsilon, are permitted, and for the cutout area D, the address alpha - the address beta and the address delta - the address epsilon are respectively permitted.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a buffer area control method, and more particularly, to a buffer area dividing method that is highly effective.

Conventionally, buffer types are classified according to their size, and when a buffer request is received for each 14 grams,
! I used buffers 1-12 that were closest to the desired size. Therefore, if 7t+ buffer requests for a certain purpose continue, requests for 7 buffers for other purposes will not be accepted (buffer exhaustion), and this will rarely affect the system. In order to overcome the above drawbacks, the following method was used.

In a buffer management method having an area control unit that controls lending and returning of buffer areas in a storage area in response to various requests, an area memory is provided to store an area that can be cut out in accordance with the type of each area request. , the above object can be achieved by the fact that 15 Jl cutout areas corresponding to each of the 11 types are secured in this area memory. The reliable 1/lAl1 configuration diagram of the buffer management method for 5lss is an explanatory diagram of the area overlap.

In the g1 diagram, MIiiM can be cut out 111III
The area memory that stores the area, ATT is the attribute - 1 DMN is the area column, T8 is the area request receiving unit, and DM8 is the request area output unit. whole area.

AeB.0@D indicates each attribute, and the right half is the area that can be cut out for each acidity.

In #E1wJ, when a storage area lending request enters the area request reception iiA'r8, 1 attribute 1 in the request and the area 1 size 1t- are extracted, and the area 1 size 1 is sent to the requested area output ISDM 8. do. ! The request output part is area memory M
Search the attribute column MTT in gM and take out the value of the area llDMN in gM that corresponds to the attribute 1 being requested.

Furthermore, the requested n from the extractable area indicated by this value
The length t-required area output unit DM8 cuts out 1! In the SAGS diagram to be sent out, various cutout areas A to D are the entire area
◎Each part of the total area X belongs to at least eight cutout IA areas.

The total area X is from the α address of the Ki t11 area to the first place
For the cutout area A here, the area from address α to the 1st place is the area that is permitted to be cut out, for the cutout area B, from address β to address α, and for the cutout area C. From the 7th honor land to the 1st honor land, for the cutting area, from all land to I
There are 4 permissions each for up to lJ address and for α address or 911 Homachi.

As explained above, in the present invention, even if area usage requests are concentrated, for example, in the large cutout area and the cutout area B, the minimum amount is secured for the cutout area 0 and the cutout area. It will be possible to standardize the service of space rental. Compared to the case where the specific volume cut-out area is distributed without weighing, the total amount of storage area is smaller, and the efficiency of storage area usage is improved.

[Brief explanation of the drawing]

FIG. 1 is a 4Ilf diagram of an embodiment of a buffer management method according to the present invention, and FIG. 8 is an explanation of how areas are weighted. In the llX1 diagram, Ml! M can be cut out! Area memo to remember areas! j, ATT is an attribute column, and DMN is an area column. 7tAT8 is an area request reception unit. DM8 is the required area output section.

Claims (1)

[Claims] ``In a buffer management method having an area control 1st' that controls lending and returning of buffer areas in a storage area in response to various requests, 12) an area memory that stores an area that can be extracted according to the type of area request; and Cf
A buffer management method characterized in that during a 10 area jlt message, #i areas corresponding to each request type are secured by partially overlapping each other and are secured by %/hb.