WO1998003914A3 - Method and apparatus for coordinated management of a shared object - Google Patents

Method and apparatus for coordinated management of a shared object Download PDF

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Publication number
WO1998003914A3
WO1998003914A3 PCT/US1997/012689 US9712689W WO9803914A3 WO 1998003914 A3 WO1998003914 A3 WO 1998003914A3 US 9712689 W US9712689 W US 9712689W WO 9803914 A3 WO9803914 A3 WO 9803914A3
Authority
WO
WIPO (PCT)
Prior art keywords
owner
destroy
shared
local
destruction
Prior art date
Application number
PCT/US1997/012689
Other languages
French (fr)
Other versions
WO1998003914A2 (en
Inventor
Jason Jeffords
Todd A. Crowley
Donald Sexton
Thomas Hazel
Original Assignee
Cabletron Systems, Inc.
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
Priority claimed from US08/681,040 external-priority patent/US6041383A/en
Application filed by Cabletron Systems, Inc. filed Critical Cabletron Systems, Inc.
Priority to AU38059/97A priority Critical patent/AU3805997A/en
Publication of WO1998003914A2 publication Critical patent/WO1998003914A2/en
Publication of WO1998003914A3 publication Critical patent/WO1998003914A3/en

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
    • G06F9/465—Distributed object oriented systems

Abstract

A method and apparatus coordinate creation and destruction of a shared object in a distributed system. An owner process creates the shared object and each other process in the system makes a local copy of the object. When a local process has a reference to the shared object, each other process is informed of the local reference. Only the owner process can destroy the object. When the owner process determines that there are no other processes, including itself, which have a reference to the shared object, the owner process decides to destroy the object. Prior to destroying the object, however, the owner process inquires of each other process as to whether it is permissible to destroy the object. If a process does not have a local reference to the object, the process will give the owner process permission to destroy the object. When, on the other hand, the process has a local reference to the object, the process will tell the owner process not to destroy the object. This confirmation of destruction prevents the invalid destruction of shared objects in the distributed system.
PCT/US1997/012689 1996-07-22 1997-07-18 Method and apparatus for coordinated management of a shared object WO1998003914A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU38059/97A AU3805997A (en) 1996-07-22 1997-07-18 Method and apparatus for coordinated management of a shared object

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US08/681,040 1996-07-22
US08/681,040 US6041383A (en) 1996-07-22 1996-07-22 Establishing control of lock token for shared objects upon approval messages from all other processes
US87354997A 1997-06-12 1997-06-12
US08/873,549 1997-06-12

Publications (2)

Publication Number Publication Date
WO1998003914A2 WO1998003914A2 (en) 1998-01-29
WO1998003914A3 true WO1998003914A3 (en) 2002-09-26

Family

ID=27102578

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/012689 WO1998003914A2 (en) 1996-07-22 1997-07-18 Method and apparatus for coordinated management of a shared object

Country Status (2)

Country Link
AU (3) AU3805997A (en)
WO (1) WO1998003914A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0264568A2 (en) * 1986-10-17 1988-04-27 International Business Machines Corporation Serialisation of system events in a multiprocessing system
EP0553560A2 (en) * 1992-01-31 1993-08-04 Gpt Limited Communications system
US5321841A (en) * 1989-06-29 1994-06-14 Digital Equipment Corporation System for determining the rights of object access for a server process by combining them with the rights of the client process
WO1995001605A2 (en) * 1993-06-30 1995-01-12 Microsoft Corporation Method and system for the link tracking of objects

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0264568A2 (en) * 1986-10-17 1988-04-27 International Business Machines Corporation Serialisation of system events in a multiprocessing system
US5321841A (en) * 1989-06-29 1994-06-14 Digital Equipment Corporation System for determining the rights of object access for a server process by combining them with the rights of the client process
EP0553560A2 (en) * 1992-01-31 1993-08-04 Gpt Limited Communications system
WO1995001605A2 (en) * 1993-06-30 1995-01-12 Microsoft Corporation Method and system for the link tracking of objects

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LEBLANC T J ET AL: "THE ELMWOOD MULTIPROCESSOR OPERATING SYSTEM", SOFTWARE PRACTICE & EXPERIENCE, vol. 19, no. 11, 1 November 1989 (1989-11-01), pages 1029 - 1055, XP000095043 *

Also Published As

Publication number Publication date
AU3805997A (en) 1998-02-10
AU3733897A (en) 1998-02-10
WO1998003914A2 (en) 1998-01-29
AU3733997A (en) 1998-02-10

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