Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2006-12-05
2006-12-05
Alam, Shahid (Department: 2162)
Data processing: database and file management or data structures
Database design
Data structure types
C707S793000, C711S173000, C711S209000
Reexamination Certificate
active
07146390
ABSTRACT:
A garbage collector that reclaims memory space no longer needed by a mutator treats a generation of a dynamically allocated heap as being divided into “car” sections. For each car section, the collector maintains a remembered-set structure in which it keeps a record of the locations in the generation where the collector has previously found references to locations in that car section. The collector operates in increments in each of which it collects a respective collection set consisting of one or more of the generation's car sections. From the remembered sets associated with a collection set's car sections, it generates scratch-pad lists whose entries tell where locations identified by those remembered sets still contain references to collection-set locations. In situations in which the remembered sets are particularly large, the collector divides the operation of generating the scratch-pad lists into a plurality of collection intervals separated by mutator intervals. The collector bases its identification of reachable collection-set objects on the scratch-pad-list entries. By dividing the scratch-pad-list generation into multiple collection intervals, the collector can keep pause times low while employing relatively large collection sets.
REFERENCES:
patent: 4724521 (1988-02-01), Carron et al.
patent: 4797810 (1989-01-01), McEntee et al.
patent: 4912629 (1990-03-01), Shuler, Jr.
patent: 4989134 (1991-01-01), Shaw
patent: 5088036 (1992-02-01), Ellis et al.
patent: 5333318 (1994-07-01), Wolf
patent: 5392432 (1995-02-01), Engelstad et al.
patent: 5485613 (1996-01-01), Engelstad et al.
patent: 5560003 (1996-09-01), Nilsen et al.
patent: 5687370 (1997-11-01), Garst et al.
patent: 5801943 (1998-09-01), Nasburg
patent: 5845278 (1998-12-01), Kirsch et al.
patent: 5845298 (1998-12-01), O'Connor et al.
patent: 5857210 (1999-01-01), Tremblay et al.
patent: 5873104 (1999-02-01), Tremblay et al.
patent: 5873105 (1999-02-01), Tremblay et al.
patent: 5900001 (1999-05-01), Wolczko et al.
patent: 5903900 (1999-05-01), Knippel et al.
patent: 5930807 (1999-07-01), Ebrahim et al.
patent: 5953736 (1999-09-01), O'Connor et al.
patent: 5960087 (1999-09-01), Tribble et al.
patent: 5999974 (1999-12-01), Ratcliff et al.
patent: 6021415 (2000-02-01), Cannon et al.
patent: 6047125 (2000-04-01), Agesen et al.
patent: 6049390 (2000-04-01), Notredame et al.
patent: 6049810 (2000-04-01), Schwartz et al.
patent: 6065020 (2000-05-01), Dussud
patent: 6098089 (2000-08-01), O'Connor et al.
patent: 6148309 (2000-11-01), Azagury et al.
patent: 6148310 (2000-11-01), Azagury et al.
patent: 6173294 (2001-01-01), Azagury et al.
patent: 6185581 (2001-02-01), Garthwaite
patent: 6226653 (2001-05-01), Alpern et al.
patent: 6243720 (2001-06-01), Munter et al.
patent: 6260120 (2001-07-01), Blumenau et al.
patent: 6289358 (2001-09-01), Mattis et al.
patent: 6308185 (2001-10-01), Grarup et al.
patent: 6314436 (2001-11-01), Houldsworth
patent: 6321240 (2001-11-01), Chilimbi et al.
patent: 6353838 (2002-03-01), Sauntry et al.
patent: 6381738 (2002-04-01), Choi et al.
patent: 6393439 (2002-05-01), Houldsworth et al.
patent: 6415302 (2002-07-01), Garthwaite et al.
patent: 6424977 (2002-07-01), Garthwaite
patent: 6434576 (2002-08-01), Garthwaite
patent: 6434577 (2002-08-01), Garthwaite
patent: 6442661 (2002-08-01), Dreszer
patent: 6449626 (2002-09-01), Garthwaite et al.
patent: 6496871 (2002-12-01), Jagannathan et al.
patent: 6529919 (2003-03-01), Agesen et al.
patent: 6567905 (2003-05-01), Otis
patent: 6640278 (2003-10-01), Nolan et al.
patent: 6757890 (2004-06-01), Wallman
patent: 6769004 (2004-07-01), Barrett
patent: 6820101 (2004-11-01), Wallman
patent: 6826583 (2004-11-01), Flood et al.
patent: 6868488 (2005-03-01), Garthwaite
patent: 6892212 (2005-05-01), Shuf et al.
patent: 6928460 (2005-08-01), Nagarajan et al.
patent: 6931423 (2005-08-01), Sexton et al.
patent: 7024437 (2006-04-01), Garthwaite
patent: 7031990 (2006-04-01), Garthwaite
patent: 7072918 (2006-07-01), Garthwaite
patent: 2002/0032719 (2002-03-01), Thomas et al.
patent: 2002/0095453 (2002-07-01), Steensgaard
patent: 2002/0133533 (2002-09-01), Czajkowski et al.
patent: 2002/0138506 (2002-09-01), Shuf et al.
patent: 2003/0088658 (2003-05-01), Davies et al.
patent: 2003/0200392 (2003-10-01), Wright et al.
patent: 2003/0217027 (2003-11-01), Farber et al.
patent: 2004/0010586 (2004-01-01), Burton et al.
patent: 2004/0039759 (2004-02-01), Detlefs et al.
patent: 2004/0215914 (2004-10-01), Dussud
patent: 0 904 055 (1999-09-01), None
patent: 0 969 377 (2000-01-01), None
patent: WO0188713 (2001-11-01), None
Jones and Lins, “Garbage Collection: Algorithms for Automatic Dynamic Memory Management,” 1996, pp. 165-179, Wiley, New York.
Paul Wilson, “Uniprocessor Garbage Collection Techniques,” Technical Report, University of Texas, 1994.
Hudson and Moss, “Incremental Collection of Mature Objects,” Proceedings of International Workshop on Memory Management, 1992, Springer-Verlag.
Grarup and Seligmann, “Incremental Mature Garbage Collection,” M. Sc. Thesis, Available at http://www.daimi.au.dk/-jacobse/Papers/.
Seligmann and Grarup, “Incremental Mature Garbage Collection Using the Train Algorithm,” Proceedings of ECOOP '95, Ninth European Conference on Object-Oriented Programming, 1995, http://www.daimi.au.dk/-jacobse/Papers/.
Clark and Mason, “Compacting Garbage Collection can be Fast and Simple,” Software-Practice and Experience, Feb. 1996, pp. 177-194, vol. 26, No. 2.
Henry Baker, “List Processing in Real Time on a Serial Computer,” Communications of the ACM 21, Apr. 4, 1978, pp. 280-294.
Appel, Ellis, and Li, “Real-time Concurrent Collection on Stock Multiprocessors,” ACM SIGPLAN Notices, 1988.
Rodney A. Brooks, “Trading Data Space for Reduced Time and Code Space in Real-Time Garbage Collection on Stock Hardware,” Proceedings of the 1984 ACM Symposium on Lisp and Functional Programming, pp. 108-113, Aug. 1984, Austin, Texas.
Herlihy and Moss, “Lock-Free Garbage Collection for Multiprocessors,” ACM SPAA, 1991, pp. 229-236.
Bacon, Attanasio, Lee, Rajan. and Smith, “Java without the Coffee Breaks: A Nonintrusive Multiprocessor Garbage Collector,” SIGPLAN Conference on Programming Language Design and Implementation, Snowbird, Utah, Jun. 2001.
James Stamos, “Static Grouping of Small Objects to Enhance Performance of a Paged Virtual Memory,” ACM Transactions on Computer Systems, vol. 2, No. 2, pp. 155-180, May 1984.
David A. Moon, “Garbage Collection in a Large Lisp System,” Conference Record of the 1984 ACM Symposium on LISP and Functional Programming, Austin, Texas, Aug. 1984, pp .235-246.
Robert Courts, “Improving Locality of Reference in a Garbage-Collecting Memory Management System,” Communications of the ACM, Sep. 1988, pp .1128-1138, vol. 31, No. 9.
Wilson, Lam, and Moher, “Effective Static-Graph Reorganization to Improve Locality in Garbage Collected Systems,” Proceedings of ACM SIGPLAN Conference on Programming Language Design and Implementation, Jun. 1991, Toronto, Ontario, Canada.
Lam, Wilson, and Moher, “Object Type Directed Garbage Collection to Improve Locality,” Proceedings of the International Workshop on Memory Management '92, St. Malo, France, Sep. 1992, pp .404-425.
Chilimbi and Larus, “Using Generational Garbage Collection to Implement Cache-Conscious Data Placement,” International Symposium on Memory Management, Oct. 1998.
Lieberman and Hewitt, “A real-time garbage collector based on the lifetimes of objects,” Communications of the ACM, 1983, pp. 419-429, vol. 26, No. 6.
David Ungar, “Generation Scavenging: A Non-Disruptive High Performance Storage Reclamation Algorithm,” ACM SIGPLAN Notices, Apr. 1984, pp. 157-167, vol. 19, No. 5.
Andrew W. Appel, “Simple Generational Garbage Collection and Fast Allocation,” Software Practice and Experience, 1989, pp. 171-183, vol. 19,
Alam Shahid
Fleurantin Jean Bolte
Osha-Liang LLP
Sun Microsystems Inc.
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