JPS5627461A - File share control system - Google Patents
File share control systemInfo
- Publication number
- JPS5627461A JPS5627461A JP10333179A JP10333179A JPS5627461A JP S5627461 A JPS5627461 A JP S5627461A JP 10333179 A JP10333179 A JP 10333179A JP 10333179 A JP10333179 A JP 10333179A JP S5627461 A JPS5627461 A JP S5627461A
- Authority
- JP
- Japan
- Prior art keywords
- discrimination number
- cpu1
- file
- cpu
- controller
- 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
Landscapes
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
PURPOSE: To prevent the performance of an external memory from deteriorating and to improve a throughput by making an occupancy assignment of every small area by dividing the external memory unit and by occupaying them without reference to a specific path.
CONSTITUTION: Controllers 7 and 8, when receiving file occupancy commands from CPU1 and 2, refer to registers, which correspond to path A, for example, of CPU discrimination number setting part in units 7 and 8 and CPU1 or 2 reads its characteristic discrimination number. Then, this discrimination number is sent to controller 9 and displayed while written in a track range that corresponds to a small area where a file to occupy the discrimination number is stored. On the other hand, when the file access command is received from CPU1 or 2, the memory of controller 9 is referred to and when a track region to be accessed is not occupied by the other CPU, the access is permitted.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10333179A JPS5627461A (en) | 1979-08-13 | 1979-08-13 | File share control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10333179A JPS5627461A (en) | 1979-08-13 | 1979-08-13 | File share control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5627461A true JPS5627461A (en) | 1981-03-17 |
Family
ID=14351174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10333179A Pending JPS5627461A (en) | 1979-08-13 | 1979-08-13 | File share control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5627461A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5667467A (en) * | 1979-11-02 | 1981-06-06 | Nec Corp | File system |
JPS5827255A (en) * | 1981-08-12 | 1983-02-17 | Hitachi Ltd | Controlling system of file used for plural electronic computers in common |
JPS58127258A (en) * | 1982-01-25 | 1983-07-29 | Hitachi Ltd | Exclusive controlling system of external storage device |
JPS60100238A (en) * | 1983-11-02 | 1985-06-04 | Nec Corp | Control system for shared file |
JPS60110053A (en) * | 1983-11-21 | 1985-06-15 | Nec Corp | File controller |
JPH02113350A (en) * | 1988-10-24 | 1990-04-25 | Nec Corp | File processor |
-
1979
- 1979-08-13 JP JP10333179A patent/JPS5627461A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5667467A (en) * | 1979-11-02 | 1981-06-06 | Nec Corp | File system |
JPS5827255A (en) * | 1981-08-12 | 1983-02-17 | Hitachi Ltd | Controlling system of file used for plural electronic computers in common |
JPH0115899B2 (en) * | 1981-08-12 | 1989-03-22 | Hitachi Ltd | |
JPS58127258A (en) * | 1982-01-25 | 1983-07-29 | Hitachi Ltd | Exclusive controlling system of external storage device |
JPS60100238A (en) * | 1983-11-02 | 1985-06-04 | Nec Corp | Control system for shared file |
JPS60110053A (en) * | 1983-11-21 | 1985-06-15 | Nec Corp | File controller |
JPH02113350A (en) * | 1988-10-24 | 1990-04-25 | Nec Corp | File processor |
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