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JPS6457348A - Simultaneous access control system - Google Patents

Simultaneous access control system

Info

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
Application number
JP62213887A
Other languages
Japanese (ja)
Inventor
Takenobu Nakatsuka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP62213887A priority Critical patent/JPS6457348A/en
Publication of JPS6457348A publication Critical patent/JPS6457348A/en
Pending legal-status Critical Current

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.
JP62213887A 1987-08-27 1987-08-27 Simultaneous access control system Pending JPS6457348A (en)

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)

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