WO2001095106A3 - Virtual heap for a virtual machine - Google Patents

Virtual heap for a virtual machine Download PDF

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Publication number
WO2001095106A3
WO2001095106A3 PCT/US2001/016819 US0116819W WO0195106A3 WO 2001095106 A3 WO2001095106 A3 WO 2001095106A3 US 0116819 W US0116819 W US 0116819W WO 0195106 A3 WO0195106 A3 WO 0195106A3
Authority
WO
WIPO (PCT)
Prior art keywords
heap
virtual
persistent
virtual machine
state
Prior art date
Application number
PCT/US2001/016819
Other languages
French (fr)
Other versions
WO2001095106A2 (en
Inventor
Gregory L Slaughter
Thomas E Saulpaugh
Bernard A Traversat
Michael J Duigou
Original Assignee
Sun Microsystems 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
Application filed by Sun Microsystems Inc filed Critical Sun Microsystems Inc
Priority to EP01939391A priority Critical patent/EP1297423B1/en
Priority to AU2001264915A priority patent/AU2001264915A1/en
Priority to DE60130556T priority patent/DE60130556T2/en
Publication of WO2001095106A2 publication Critical patent/WO2001095106A2/en
Publication of WO2001095106A3 publication Critical patent/WO2001095106A3/en

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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
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/448—Execution paradigms, e.g. implementations of programming paradigms
    • G06F9/4488—Object-oriented
    • G06F9/4493—Object persistence

Abstract

A virtual heap for a process executing within a virtual machine is described. In one embodiment, the virtual persistent heap may allow the running of an application on a physical heap that is smaller than may otherwise be required. As an example, the virtual persistent heap may be an order of magnitude larger than the physical, in-memory heap. This feature is important for small consumer and appliance devices, as these devices may have a limited amount of memory. In one embodiment, the virtual heap may be maintained on non-volatile memory storage external to the device running the virtual machine, and portions of the heap for the current execution state of the process may be cached in and out of a 'physical' heap resident in local memory on the device. For example, the device may connect to a server on the Internet, and the server may provide non-volatile storage space for the virtual heap. In another embodiment, the external storage for the virtual persistent heap may reside on a non-volatile storage attached to the device, for example, a Flash card or hard disk drive. In one embodiment of the virtual heap, the entire heap for a process may be made persistent. The virtual persistent heap may enable the checkpointing of the state of the computation of a virtual machine, including processes executing within the virtual machine, to a persistent storage such as a disk or flash device for future resumption of the computation from the checkpoint. The Virtual Persistent Heap also may enable the migration of the virtual machine computation states, and thus the migration of executing processes, from one machine to another. The saved state of the virtual machine heap may also provide the ability to restart the virtual machine after a system crash or shutdown to the last saved persistent state, and to restart a process that was running within the virtual machine prior to the system crash or shutdown to a checkpointed state of the process stored in the virtual persistent heap. This persistent feature is important for small consumer and appliance devices, as these appliances may be shutdown and restarted often.
PCT/US2001/016819 2000-06-02 2001-05-21 Virtual heap for a virtual machine WO2001095106A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP01939391A EP1297423B1 (en) 2000-06-02 2001-05-21 Virtual heap for a virtual machine
AU2001264915A AU2001264915A1 (en) 2000-06-02 2001-05-21 Virtual heap for a virtual machine
DE60130556T DE60130556T2 (en) 2000-06-02 2001-05-21 VIRTUAL HEAP FOR A VIRTUAL MACHINE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/587,180 US6941410B1 (en) 2000-06-02 2000-06-02 Virtual heap for a virtual machine
US09/587,180 2000-06-02

Publications (2)

Publication Number Publication Date
WO2001095106A2 WO2001095106A2 (en) 2001-12-13
WO2001095106A3 true WO2001095106A3 (en) 2003-01-30

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Family Applications (1)

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PCT/US2001/016819 WO2001095106A2 (en) 2000-06-02 2001-05-21 Virtual heap for a virtual machine

Country Status (6)

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US (1) US6941410B1 (en)
EP (1) EP1297423B1 (en)
AT (1) ATE373841T1 (en)
AU (1) AU2001264915A1 (en)
DE (1) DE60130556T2 (en)
WO (1) WO2001095106A2 (en)

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EP1297423B1 (en) 2007-09-19
AU2001264915A1 (en) 2001-12-17
US6941410B1 (en) 2005-09-06
DE60130556D1 (en) 2007-10-31
ATE373841T1 (en) 2007-10-15
EP1297423A2 (en) 2003-04-02
WO2001095106A2 (en) 2001-12-13
DE60130556T2 (en) 2008-06-12

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