JPS6435624A - System for managing free area of disk - Google Patents
System for managing free area of diskInfo
- Publication number
- JPS6435624A JPS6435624A JP19004887A JP19004887A JPS6435624A JP S6435624 A JPS6435624 A JP S6435624A JP 19004887 A JP19004887 A JP 19004887A JP 19004887 A JP19004887 A JP 19004887A JP S6435624 A JPS6435624 A JP S6435624A
- Authority
- JP
- Japan
- Prior art keywords
- free area
- size
- cluster
- area
- request
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE:To execute a search processing of a free area at high speed, and to efficiently manage the free area by executing a search by a sector unit, in case of obtaining the free area of a size which is not (n) times of a cluster size. CONSTITUTION:A floppy disk 1-1 is divided into an area 1-2 managed by a sector unit and an area 1-3 managed by a cluster unit, and a sector management table 1-4 and a cluster management table 1-5 are provided on the leading of each area. In this state, when a free area obtaining request is generated, whether the request size is the same size as (n) times of a cluster or not is checked, and when said request size is the same as (n) times of the cluster size, the free area is searched from in the table 1-5, and when it is found out, the corresponding bit is set to '1'. On the other hand, when said request size is different from (n) times of the cluster size, the free area of a request size portion is searched from the table 1-4, and when it is found out, the corresponding bit is set to '1'. In such a way, the search processing of the area can be executed at higher speed than the case when it is executed by only the cluster unit, and the free area can be managed efficiently.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19004887A JPS6435624A (en) | 1987-07-31 | 1987-07-31 | System for managing free area of disk |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19004887A JPS6435624A (en) | 1987-07-31 | 1987-07-31 | System for managing free area of disk |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6435624A true JPS6435624A (en) | 1989-02-06 |
Family
ID=16251482
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19004887A Pending JPS6435624A (en) | 1987-07-31 | 1987-07-31 | System for managing free area of disk |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6435624A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007121086A (en) * | 2005-10-27 | 2007-05-17 | Sunx Ltd | Detection sensor, mounting tool, and mounting structure for detection sensor |
-
1987
- 1987-07-31 JP JP19004887A patent/JPS6435624A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007121086A (en) * | 2005-10-27 | 2007-05-17 | Sunx Ltd | Detection sensor, mounting tool, and mounting structure for detection sensor |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS6446852A (en) | Memory control system | |
JPS648742A (en) | Method of searching resource | |
JPS547252A (en) | Program control system | |
JPS6435624A (en) | System for managing free area of disk | |
JPS5318931A (en) | Information processor | |
JPS55164922A (en) | Multimicrocomputer | |
JPS5285444A (en) | Information processing system | |
JPS537152A (en) | Address stop circuit | |
JPS5533214A (en) | Information processing system | |
JPS55113182A (en) | Virtual computer system with tlb | |
JPS5621273A (en) | Data base processing system | |
JPS55162154A (en) | Data processor | |
JPS54137256A (en) | Multi-processor equipment | |
JPS5431248A (en) | Composite computer system | |
JPS6444538A (en) | Command file processing system | |
JPS5336148A (en) | Interruption system | |
Wiorkowski et al. | The Optimizer: Invisible hand of the DBMS. | |
JPS53115149A (en) | Priority control system | |
JPS6459434A (en) | Input/output control system for virtual computer | |
JPS6410348A (en) | Informing system for generation factor of deadlock | |
JPS5748136A (en) | High-speed retrieval system by multiple hashing | |
JPS5427738A (en) | Bus stall processing system | |
JPS5688540A (en) | Interrupt control system | |
JPS5786181A (en) | Second buffer storage device | |
JPS53115150A (en) | Priority control system |