Vijay G Nagarajan

US Patent:

7171527, Jan 30, 2007

Filed:

Jun 10, 2004

Appl. No.:

10/866046

Inventors:

Oleg A. Pliss - Santa Clara CA, US
Bernd J. Mathiske - Cupertino CA, US
Ioi K. Lam - Mountain View CA, US
Vijay G. Nagarajan - Los Gatos CA, US

Assignee:

Sun Microsystems, Inc - Santa Clara CA

International Classification:

G06F 12/00
G06F 17/30

US Classification:

711153, 711147, 711173, 707206

Abstract:

One embodiment of the present invention provides a system that facilitates keeping track of memory usage of tasks in a shared heap without performing a full garbage-collection operation. The system operates by determining a memory usage by each task in a young generation of the shared heap. Once the memory usage for each task has been determined, the system then adds the memory usage for each task in the young generation of the shared heap to a global memory usage for each task (obtained during a preceding full garbage-collection operation) to produce an actual memory usage for each task.

US Patent:

7539822, May 26, 2009

Filed:

Apr 13, 2005

Appl. No.:

11/106182

Inventors:

Vijay G. Nagarajan - Los Gatos CA, US
Bernd J. Mathiske - Cupertino CA, US

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

G06F 12/00
G06F 13/00
G06F 13/28

US Classification:

711135, 711118, 711126, 711161, 711171

Abstract:

One embodiment of the present invention provides a system that facilitates faster execution of code on a memory-constrained computing device that has fast on-chip RAM, wherein the fast on-chip RAM is located on a processor chip, but is not cache memory. The system operates by copying a compiled method from an object heap to the fast on-chip RAM on the memory-constrained computing device. Additionally, the system updates an execution pointer to point to the compiled method in the fast on-chip RAM, wherein the execution pointer can also point to a compiled method in the object heap or an interpreted method in the object heap.

US Patent:

20040003014, Jan 1, 2004

Filed:

Jul 1, 2002

Appl. No.:

10/189054

Inventors:

Vijay Nagarajan - Los Gatos CA, US
Robert Rochetti - Los Altos CA, US
Nedim Fresko - San Francisco CA, US

International Classification:

G06F012/00

US Classification:

707/206000

Abstract:

One embodiment of the present invention provides a system that facilitates performing generational garbage collection on a heap. The system operates by dividing an old generation of the heap into segments. Next, the system divides each segment into a series of cards and associates a separate card table with each segment. This card table has an entry for each card in the segment. In a variation on this embodiment, while updating a pointer within an object in the old generation, the system locates the segment containing the object and accesses the card table for the segment. The system then marks the entry in the card table associated with the card containing the object.