AU2001238291A1 - Incremental class unloading in a train-algorithm-based garbage collector - Google Patents

Incremental class unloading in a train-algorithm-based garbage collector

Info

Publication number
AU2001238291A1
AU2001238291A1 AU2001238291A AU3829101A AU2001238291A1 AU 2001238291 A1 AU2001238291 A1 AU 2001238291A1 AU 2001238291 A AU2001238291 A AU 2001238291A AU 3829101 A AU3829101 A AU 3829101A AU 2001238291 A1 AU2001238291 A1 AU 2001238291A1
Authority
AU
Australia
Prior art keywords
train
algorithm
garbage collector
based garbage
class unloading
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.)
Abandoned
Application number
AU2001238291A
Inventor
Ole Agesen
Alexander T. Garthwaite
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.)
Sun Microsystems Inc
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
Publication of AU2001238291A1 publication Critical patent/AU2001238291A1/en
Abandoned 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
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/445—Program loading or initiating
    • G06F9/44594—Unloading
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/0223—User address space allocation, e.g. contiguous or non contiguous base addressing
    • G06F12/023—Free address space management
    • G06F12/0253—Garbage collection, i.e. reclamation of unreferenced memory
    • G06F12/0269—Incremental or concurrent garbage collection, e.g. in real-time systems
    • G06F12/0276—Generational garbage collection
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S707/00—Data processing: database and file management or data structures
    • Y10S707/99941—Database schema or data structure
    • Y10S707/99944—Object-oriented database structure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S707/00—Data processing: database and file management or data structures
    • Y10S707/99951—File or database maintenance
    • Y10S707/99952—Coherency, e.g. same view to multiple users
    • Y10S707/99953—Recoverability
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S707/00—Data processing: database and file management or data structures
    • Y10S707/99951—File or database maintenance
    • Y10S707/99956—File allocation
    • Y10S707/99957—Garbage collection
AU2001238291A 2000-02-15 2001-02-14 Incremental class unloading in a train-algorithm-based garbage collector Abandoned AU2001238291A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/504,091 US6529919B1 (en) 2000-02-15 2000-02-15 Incremental class unloading in a train-algorithm-based garbage collector
US09504091 2000-02-15
PCT/US2001/004806 WO2001061472A2 (en) 2000-02-15 2001-02-14 Incremental class unloading in a train-algorithm-based garbage collector

Publications (1)

Publication Number Publication Date
AU2001238291A1 true AU2001238291A1 (en) 2001-08-27

Family

ID=24004805

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001238291A Abandoned AU2001238291A1 (en) 2000-02-15 2001-02-14 Incremental class unloading in a train-algorithm-based garbage collector

Country Status (3)

Country Link
US (1) US6529919B1 (en)
AU (1) AU2001238291A1 (en)
WO (1) WO2001061472A2 (en)

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US6502111B1 (en) * 2000-07-31 2002-12-31 Microsoft Corporation Method and system for concurrent garbage collection
US6874074B1 (en) * 2000-11-13 2005-03-29 Wind River Systems, Inc. System and method for memory reclamation
EP1262870A1 (en) * 2001-05-30 2002-12-04 STMicroelectronics Limited Use of an atomic swap instruction for a shared queue
US6928460B2 (en) * 2002-07-01 2005-08-09 Sun Microsystems, Inc. Method and apparatus for performing generational garbage collection in a segmented heap
US7539713B2 (en) 2002-11-05 2009-05-26 Sun Microsystems, Inc. Allocation of likely popular objects in the train algorithm
US6999979B2 (en) * 2002-11-05 2006-02-14 Sun Microsystems, Inc. Efficient encoding of references into a collection set
US7035884B2 (en) * 2002-11-05 2006-04-25 Sun Microsystems, Inc. Placement of allocation trains in the train algorithm
US7188129B2 (en) * 2002-11-15 2007-03-06 Sun Microsystems, Inc. Merging trains in a collector based on the train algorithm
US7209935B2 (en) * 2002-11-27 2007-04-24 Sun Microsystems, Inc. Avoiding remembered-set maintenance overhead for memory segments known to be in a collection set
US7085790B2 (en) * 2002-12-06 2006-08-01 Sun Microsystems, Inc. Advancing cars in trains managed by a collector based on the train algorithm
US7024437B2 (en) * 2002-12-06 2006-04-04 Sun Microsystems, Inc. Better placement of objects reachable from special objects during collection based on the train algorithm
US7072905B2 (en) * 2002-12-06 2006-07-04 Sun Microsystems, Inc. Better placement of objects reachable from outside a generation managed by the train algorithm
US7069280B2 (en) 2002-12-06 2006-06-27 Sun Microsystems, Inc. Collection-tick mechanism for a collector based on the train algorithm
US7031990B2 (en) 2002-12-06 2006-04-18 Sun Microsystems, Inc. Combining external and intragenerational reference-processing in a garbage collector based on the train algorithm
US7143124B2 (en) 2002-12-06 2006-11-28 Sun Microsystems, Inc. Detection of dead regions during incremental collection
US7146390B2 (en) * 2003-02-24 2006-12-05 Sun Microsystems, Inc. Staging the processing of remembered-set entries as part of collection based on the train algorithm
US7092978B2 (en) * 2003-02-24 2006-08-15 Sun Microsystems, Inc. Space-efficient, depth-first parallel copying collection technique making use of work—stealing on the same structures that maintain the stack of items to be scanned
US7069281B2 (en) * 2003-02-24 2006-06-27 Sun Microsystems, Inc. Efficient collocation of evacuated objects in a copying garbage collector using variably filled local allocation buffers
US7096329B2 (en) * 2003-02-27 2006-08-22 Sun Microsystems, Inc. Better placement of objects promoted into a generation managed by the train algorithm
US7062519B2 (en) * 2003-02-27 2006-06-13 Sun Microsystems, Inc. Incremental scanning of enormous objects to improve scheduling and pause-time behavior of garbage collection
US20040186863A1 (en) * 2003-03-21 2004-09-23 Garthwaite Alexander T. Elision of write barriers for stores whose values are in close proximity
US7072918B2 (en) 2003-03-24 2006-07-04 Sun Microsystems, Inc. Remembered-set scrubbing to remove stale entries in an incremental garbage collector
US7089272B1 (en) 2003-06-18 2006-08-08 Sun Microsystems, Inc. Specializing write-barriers for objects in a garbage collected heap
US7149762B1 (en) 2003-08-20 2006-12-12 Sun Microsystems, Inc. Handling futile collections in the train algorithm through selective extension of the collection set
US7404182B1 (en) 2003-10-03 2008-07-22 Sun Microsystems, Inc. Deferring and combining write barriers for a garbage-collected heap
US7197521B2 (en) * 2003-11-21 2007-03-27 Intel Corporation Method and system performing concurrently mark-sweep garbage collection invoking garbage collection thread to track and mark live objects in heap block using bit vector
US7702663B2 (en) * 2004-01-05 2010-04-20 International Business Machines Corporation Breaking read barrier to apply optimizations
US20050198088A1 (en) * 2004-03-03 2005-09-08 Sreenivas Subramoney Method and system for improving the concurrency and parallelism of mark-sweep-compact garbage collection
US7302515B1 (en) * 2004-03-12 2007-11-27 Sun Microsystems, Inc. Exploiting popular objects to reduce mutator overhead
US7428560B1 (en) * 2004-03-12 2008-09-23 Sun Microsystems, Inc. Age segregation for garbage collector
US7617264B1 (en) 2004-04-15 2009-11-10 Sun Microsystems, Inc. Parallel remembered-set processing respecting popular-object detection
US8131955B2 (en) * 2004-04-15 2012-03-06 Microsoft Corporation Ephemeral garbage collection using a tracking mechanism on a card table to determine marked bundles
US7620943B1 (en) * 2004-06-30 2009-11-17 Sun Microsystems, Inc. Using class properties to segregate objects in a generation managed by the train algorithm
US7676801B1 (en) * 2004-08-31 2010-03-09 Sun Microsystems, Inc. Scanning of evacuated objects in a generation managed by the train algorithm
US7653793B1 (en) 2004-11-17 2010-01-26 Sun Microsystems, Inc. Use of memory protection to implement replicating collection in an incremental, copying garbage collector
US7895588B2 (en) * 2004-12-20 2011-02-22 Sap Ag System and method for detecting and certifying memory leaks within object-oriented applications
US7321909B1 (en) 2004-12-23 2008-01-22 Sun Microsystems, Inc. Method and apparatus for forwarding references to objects concurrently with space-incremental garbage collection
US7685182B2 (en) * 2007-05-08 2010-03-23 Microsoft Corporation Interleaved garbage collections
US8694751B2 (en) * 2008-12-31 2014-04-08 International Business Machines Corporation Defer separating children in parallel copying garbage collection
US8489653B2 (en) * 2011-02-08 2013-07-16 International Business Machines Corporation Incremental class unloading in a region-based garbage collector
US8738877B2 (en) 2011-12-14 2014-05-27 Advance Micro Devices, Inc. Processor with garbage-collection based classification of memory
US11550714B2 (en) * 2019-04-15 2023-01-10 International Business Machines Corporation Compiling application with multiple function implementations for garbage collection

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US5845298A (en) 1997-04-23 1998-12-01 Sun Microsystems, Inc. Write barrier system and method for trapping garbage collection page boundary crossing pointer stores
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US6148310A (en) * 1998-08-25 2000-11-14 International Business Machines Corporation Method for combining card marking with remembered sets for old area of a memory heap
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Also Published As

Publication number Publication date
US6529919B1 (en) 2003-03-04
WO2001061472A3 (en) 2002-06-27
WO2001061472A2 (en) 2001-08-23

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