The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 18, 2004

Filed:

Apr. 12, 2002
Applicant:
Inventors:

Lars Bak, Tranbjerg J., DK;

Jacob R. Andersen, Aarhus C., DK;

Kasper V. Lund, Aarhus C., DK;

Assignee:

Sun Microsystems, Inc., Santa Clara, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 9/45 ;
U.S. Cl.
CPC ...
G06F 9/45 ;
Abstract

One embodiment of the present invention provides a system that gathers code usage information to facilitate removing compiled code that has not been recently used. This method operates in a mixed-mode system that supports execution of both compiled code and interpreter code. During operation, the system gathers usage information for compiled methods within an application while the application is executing. Next, the system identifies compiled methods to be removed based on this usage information, and removes identified compiled methods so that interpreter code is executed for the compiled methods instead of compiled code. In this way, the system frees up the memory space used to store the compiled methods.


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