JPS57152061A - Dead lock preventing system in network - Google Patents

Dead lock preventing system in network

Info

Publication number
JPS57152061A
JPS57152061A JP56037019A JP3701981A JPS57152061A JP S57152061 A JPS57152061 A JP S57152061A JP 56037019 A JP56037019 A JP 56037019A JP 3701981 A JP3701981 A JP 3701981A JP S57152061 A JPS57152061 A JP S57152061A
Authority
JP
Japan
Prior art keywords
node
file
managed
issues
lock
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
JP56037019A
Other languages
Japanese (ja)
Inventor
Kazuo Kobayashi
Yutaka Ogawa
Toshiki Yoshimatsu
Haruo Tamura
Kazuo Tsuchiya
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.)
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Nippon Electric Co Ltd
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 Fujitsu Ltd, Hitachi Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP56037019A priority Critical patent/JPS57152061A/en
Publication of JPS57152061A publication Critical patent/JPS57152061A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/52—Program synchronisation; Mutual exclusion, e.g. by means of semaphores
    • G06F9/524—Deadlock detection or avoidance

Abstract

PURPOSE:To eliminate the need for a network global managing system, by issuing a request in accordance with the ascending or descending order of node addresses with one significance determined fixedly with a network, in using other resource of node by the user. CONSTITUTION:A node NL issues a lock N2M1F1 at first and occupies a file F1 managed by a resource manager M1. When a node N4 issues the lock N2M1F1, the node N4 waits for the usage of the file F1, until the lock is released with the node N1. Next, when the node N1 issues a lock N3M1F2, a file F2 managed by a resource manager M2 of a node N3 is occupied with the node N1. When the node N1 issues unlocks N2M1F1 and N3M2F2, the file F1 managed by the manager M1 of the node N2 and the file F2 managed by the manager M1 of the node N3 are released and the use of the file F1 by the node N4 is made possible.
JP56037019A 1981-03-14 1981-03-14 Dead lock preventing system in network Pending JPS57152061A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56037019A JPS57152061A (en) 1981-03-14 1981-03-14 Dead lock preventing system in network

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56037019A JPS57152061A (en) 1981-03-14 1981-03-14 Dead lock preventing system in network

Publications (1)

Publication Number Publication Date
JPS57152061A true JPS57152061A (en) 1982-09-20

Family

ID=12485941

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56037019A Pending JPS57152061A (en) 1981-03-14 1981-03-14 Dead lock preventing system in network

Country Status (1)

Country Link
JP (1) JPS57152061A (en)

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