JPS6457348A - Simultaneous access control system - Google Patents
Simultaneous access control systemInfo
- Publication number
- JPS6457348A JPS6457348A JP62213887A JP21388787A JPS6457348A JP S6457348 A JPS6457348 A JP S6457348A JP 62213887 A JP62213887 A JP 62213887A JP 21388787 A JP21388787 A JP 21388787A JP S6457348 A JPS6457348 A JP S6457348A
- Authority
- JP
- Japan
- Prior art keywords
- user process
- block
- request
- control part
- input
- 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 shorten the queuing time of an other user process by changing the output request state of a registered block into an input request state at the time of receiving DML end information generated from the user process. CONSTITUTION:The user process 10 informs the sort of an input or output request to a block to be accessed of a file 20 to a simultaneous access control part 30. The control part 30 registers the informed request sort, inspects the request and informs the result to the user process 10. The user process 10 executes or waits an I/O instruction in accordance with the information. At the time of receiving DML end information outputted from the user process 10, the control part 30 changes the output request state of the block concerned to the input request state and allows an input request of the other user process waiting the block to be executed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62213887A JPS6457348A (en) | 1987-08-27 | 1987-08-27 | Simultaneous access control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62213887A JPS6457348A (en) | 1987-08-27 | 1987-08-27 | Simultaneous access control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6457348A true JPS6457348A (en) | 1989-03-03 |
Family
ID=16646661
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62213887A Pending JPS6457348A (en) | 1987-08-27 | 1987-08-27 | Simultaneous access control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6457348A (en) |
-
1987
- 1987-08-27 JP JP62213887A patent/JPS6457348A/en active Pending
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