WO2001097023A3 - Method and apparatus for implementing compact type signatures in a virtual machine environment - Google Patents

Method and apparatus for implementing compact type signatures in a virtual machine environment Download PDF

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Publication number
WO2001097023A3
WO2001097023A3 PCT/US2001/017486 US0117486W WO0197023A3 WO 2001097023 A3 WO2001097023 A3 WO 2001097023A3 US 0117486 W US0117486 W US 0117486W WO 0197023 A3 WO0197023 A3 WO 0197023A3
Authority
WO
WIPO (PCT)
Prior art keywords
virtual machine
bit
signatures
representations
word
Prior art date
Application number
PCT/US2001/017486
Other languages
French (fr)
Other versions
WO2001097023A2 (en
Inventor
Richard D Tuck
Dean R E Long
John Rose
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 AU2001265203A priority Critical patent/AU2001265203A1/en
Priority to US10/450,467 priority patent/US20040078346A1/en
Priority to GB0230354A priority patent/GB2381354B/en
Publication of WO2001097023A2 publication Critical patent/WO2001097023A2/en
Publication of WO2001097023A3 publication Critical patent/WO2001097023A3/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
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/448—Execution paradigms, e.g. implementations of programming paradigms
    • G06F9/4488—Object-oriented
    • G06F9/449—Object-oriented method invocation or resolution
    • 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
    • Y10S707/99942—Manipulating data structure, e.g. compression, compaction, compilation

Abstract

Methods and apparatus for creating compacted method signatures from method signature representations in JavaTM class files are disclosed. The use of compacted signatures reduces the amount of memory space occupied by the signatures and, further, improves the efficiency with which a virtual machine may operate. According to one aspect of the present invention, a method for creating a compact representation of a method signature using a virtual machine includes creating 4-bit representations for each of the first parameter, a separator, and a return type included in the method signature. Once the 4-bit representations are created, the representations are packed into a word. In one embodiment, the word is a 32-bit word. In such an embodiment, the 32-bit word may be a 32-bit integer.
PCT/US2001/017486 2000-06-12 2001-05-30 Method and apparatus for implementing compact type signatures in a virtual machine environment WO2001097023A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2001265203A AU2001265203A1 (en) 2000-06-12 2001-05-30 Method and apparatus for implementing compact type signatures in a virtual machine environment
US10/450,467 US20040078346A1 (en) 2000-12-15 2001-05-30 Return delivery charges weight averaging system
GB0230354A GB2381354B (en) 2000-06-12 2001-05-30 Method and apparatus for implementing compact type signatures in a virtual machine environment

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US21100200P 2000-06-12 2000-06-12
US60/211,002 2000-06-12
US09/844,571 2001-04-26
US09/844,571 US6711576B1 (en) 2000-06-12 2001-04-26 Method and apparatus for implementing compact type signatures in a virtual machine environment

Publications (2)

Publication Number Publication Date
WO2001097023A2 WO2001097023A2 (en) 2001-12-20
WO2001097023A3 true WO2001097023A3 (en) 2003-01-16

Family

ID=26905716

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/017486 WO2001097023A2 (en) 2000-06-12 2001-05-30 Method and apparatus for implementing compact type signatures in a virtual machine environment

Country Status (4)

Country Link
US (1) US6711576B1 (en)
AU (1) AU2001265203A1 (en)
GB (1) GB2381354B (en)
WO (1) WO2001097023A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6996824B2 (en) * 2001-05-09 2006-02-07 Sun Microsystems, Inc. Frameworks for efficient representation of string objects in Java programming environments
US7181724B2 (en) * 2001-06-20 2007-02-20 Sun Microsystems, Inc. Representation of Java® data types in virtual machines
US7082597B2 (en) * 2001-06-20 2006-07-25 Sun Microsystems, Inc. Representation of objects in a Java programming environment
US7036120B2 (en) * 2001-07-31 2006-04-25 Sun Microsystems, Inc. Two tier clusters for representation of objects in Java programming environments
US6948156B2 (en) * 2001-10-24 2005-09-20 Sun Microsystems, Inc. Type checking in java computing environments
US8321847B1 (en) * 2007-05-17 2012-11-27 The Mathworks, Inc. Dynamic function wizard

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5918053A (en) * 1996-12-19 1999-06-29 International Business Machines Corp. Method and system for diagraming collaborations deduced from small talkcode using a design virtual machine
US6457066B1 (en) * 1997-11-10 2002-09-24 Microsoft Corporation Simple object access protocol

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
"Les bases informatiques -- Le codage de l'information", INTERNET DOCUMENT, 14 November 1999 (1999-11-14), XP002206857, Retrieved from the Internet <URL:http://www.up.univ-mrs.fr/wcilsh/cours_infZ10/cours56/Z10_C6.htm> [retrieved on 20020719] *
"Netscape - Page Info", NETSCAPE SCREENSHOT, XP002206853 *
"Netscape - Page Info", NETSCAPE SCREENSHOT, XP002206855 *
K. C. HOPSON, STEPHEN E. INGRAM: "Developing Professional Java(tm) Applets", INTERNET DOCUMENT, 12 October 1998 (1998-10-12), pages index.htm - ch10.htm, XP002206856, Retrieved from the Internet <URL:http://www.kaposnet.hu/books/profiapplet/index.htm , http://www.kaposnet.hu/books/profiapplet/ch10.htm> [retrieved on 20020717] *
SUN MICROSYSTEMS: "The Java Virtual Machine Specification, Release 1.0 Beta DRAFT", INTERNET DOCUMENT, 21 August 1995 (1995-08-21), XP002206854, Retrieved from the Internet <URL:http://di002.edv.uniovi.es/procesadores/Download/Java/Bytecodes/vmspec.pdf> [retrieved on 20020718] *

Also Published As

Publication number Publication date
GB2381354A8 (en) 2003-05-19
WO2001097023A2 (en) 2001-12-20
GB0230354D0 (en) 2003-02-05
GB2381354A (en) 2003-04-30
AU2001265203A1 (en) 2001-12-24
GB2381354B (en) 2005-01-12
US6711576B1 (en) 2004-03-23

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