Daniel A Grove

US Patent:

8356297, Jan 15, 2013

Filed:

Mar 21, 2007

Appl. No.:

11/726695

Inventors:

Ivan Posva - Mountain View CA, US
Daniel Dwight Grove - Mercer Island WA, US
Anirban Sengupta - Sunnyvale CA, US
Sivakumar Annamalai - Cupertino CA, US
Gil Tene - Palo Alto CA, US

Assignee:

Azul Systems, Inc. - Sunnyvale CA

International Classification:

G06F 9/455

US Classification:

718 1

Abstract:

Interacting with an external environment of a segmented virtual machine is disclosed. An indication that a communication with an external environment is desired is received. It is determined whether the communication can be initiated directly from a core virtual machine of the segmented virtual machine without initiating the communication from a shell virtual machine of the segmented virtual machine. An attempt to initiate the communication is made based as at least in part on the determination.

US Patent:

61120251, Aug 29, 2000

Filed:

Mar 25, 1996

Appl. No.:

8/622560

Inventors:

Nand M. Mulchandani - Menlo Park CA
Daniel D. Grove - Mountain View CA

Assignee:

Sun Microsystems, Inc. - Mountain View CA

International Classification:

G06F 945

US Classification:

395709

Abstract:

In a system for dynamically linking a compiled procedure to referenced object components during execution of the compiled procedure, a native code loader loads the compiled procedure into a user's address space, and replaces a first instruction in the compiled procedure that references a first object component with a replacement instruction that invokes execution of a dynamic resolution procedure. While executing the compiled procedure, execution of the replacement instruction invokes execution of the dynamic resolution procedure. The dynamic resolution procedure locates the first object component, replaces the replacement instruction in the compiled procedure with a patch instruction, corresponding to the first instruction, that references the located first object component. The dynamic resolution procedure also resets a program counter value associated with execution of the compiled procedure so that when the dynamic resolution procedure returns back to the compiled procedure, the patch instruction is executed next. In a preferred embodiment, the native code loader replaces a shadow instruction, immediately following the first instruction in the compiled program with a NOP instruction.

US Patent:

56597541, Aug 19, 1997

Filed:

Mar 31, 1995

Appl. No.:

8/414267

Inventors:

Daniel D. Grove - Mountain View CA
David C. Schwartz - San Antonio TX

Assignee:

Sun Microsystems, Inc. - Mountain View CA

International Classification:

G06F 945

US Classification:

395709

Abstract:

An optimizing compiler process and apparatus is disclosed for more accurately and efficiently identifying live variable sets in a portion of a target computer program, so as to more efficiently allocate registers in a computer central processing unit. The process of the invention includes the steps of performing a static single assignment transform to a computer program, including the addition of phi functions to a control flow graph. Basic blocks representing a use of a variable are further added to the control flow graph between the phi functions and definitions of the variables converging at the phi functions. A backward dataflow analysis is then performed to identify the live variable sets. The variables in the argument of phi functions are not included as a use of those variables in this dataflow analysis. The dataflow analysis may be iteratively performed until the live variable sets remain constant between iterations.