Swee Hwa Lim

US Patent:

6360256, Mar 19, 2002

Filed:

Jul 1, 1996

Appl. No.:

08/673951

Inventors:

Swee B. Lim - Mountain View CA

Assignee:

Sun Microsystems, Inc. - Palo Alto CA

International Classification:

G06F 1314

US Classification:

709223, 709105, 709203, 709207, 709218, 709227, 709249

Abstract:

A self-reconfiguring name service that distributes workload among the available servers in a system. A Service Monitor for each host system of a site periodically broadcasts information about available servers. The broadcast message also indicates the workload of the host. Each name service (DNS) has an associated process called a Name Binder Modifier that receives the broadcast messages from the Service Monitors. Periodically, each Name Binder Modifier reviews the information it has received from various Service Monitors and updates zones that are used by the DNS to perform load balancing. The Service Monitor and the Name Binding Modifier have associated configuration files.

US Patent:

6389484, May 14, 2002

Filed:

Dec 6, 1999

Appl. No.:

09/454514

Inventors:

Swee Boon Lim - Mountain View CA
Peter B. Kessler - Palo Alto CA
David M. Brownell - Palo Alto CA

Assignee:

Sun Microsystems, Inc. - Palo Alto CA

International Classification:

G06F 944

US Classification:

709316

Abstract:

Data structures, methods, and devices for facilitating servant invocation in a distributed client-server based object oriented operating system are disclosed. In one aspect of the invention, descriptor data structures, which contain a typecode indicator, a marshaling function identifier, and an unmarshaling function identifier, are used to enable modules of application code to be shared between different objects, thereby facilitating servant invocation by increasing the amount of commonized code in the operating system. In another aspect of the invention, a server invocation object is used in the execution of a method call. In still another aspect of the invention, a commonized code base is used to process typecode interpreted and compiled calls to a server process.

US Patent:

6412001, Jun 25, 2002

Filed:

Jan 29, 1999

Appl. No.:

09/240193

Inventors:

Thomas K. Wong - Pleasanton CA
Panagiotis Tsirigotis - Mountain View CA
Swee Lim - Cupertino CA
Sanjay Radia - Fremont CA

Assignee:

Sun Microsystems, Inc. - Palo Alto CA

International Classification:

G06F 15173

US Classification:

709224

Abstract:

A covert channel is established between a network service and one or more service monitors in a service group. The covert channel minimizes overhead by providing an indication of the status of the service through use of operating system utilities rather than conventional remote procedure calls (RPCs) or posting methods. The covert channel relies on one or more communication files established and updated by the service and having attributes which are in proportion to the workload of the service. By monitoring these attributes, the service monitor is able to determine the status of the service, including its workload and availability, without incurring costly operational overhead.

US Patent:

6718550, Apr 6, 2004

Filed:

Jun 26, 1996

Appl. No.:

08/670684

Inventors:

Swee Boon Lim - Mountain View CA
Peter B. Kessler - Palo Alto CA
Sanjay R. Radia - Fremont CA
Graham Hamilton - Palo Alto CA

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

G06F 946

US Classification:

719300

Abstract:

Data structures, methods and devices for reducing computing overhead by utilizing different invocation paths for same process and different process invocations in a distributed client/server based computing system are disclosed. In one aspect of the invention, calls to a servant that do not share the same process as the requesting client are routed through a transport layer, and calls to servants that do share the same process as the requesting client are passed directly to the servant, thereby bypassing the transport layer. In another aspect of the invention, distinct remote and local method tables are provided to facilitate intelligent routing of requests. In still another aspect of the invention, the appropriate method table for an object reference is intelligently selected based upon the location of the identified object.

US Patent:

6785838, Aug 31, 2004

Filed:

Feb 13, 2001

Appl. No.:

09/782572

Inventors:

Swee Boon Lim - Cupertino CA
Devendra R. Jaisinghani - Fremont CA
Sanjay G. Nadkarni - Louisville CO
Robert Gittins - Westminster CO

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

G06F 1100

US Classification:

714 7, 714 6

Abstract:

A system and method are provided for recovering from the failure of a mirrored boot device (e. g. , disk drive). One method is implemented for a computer system that mirrors two (or more) boot devices. If one of the devices fails, a set of compensating activities is performed, which may include removing the failed device from the list of devices from which the system may boot, deleting mirror state data from the device and removing the failed device from the mirroring scheme. After the failed device is repaired or replaced, a set of reintegrating activities is performed, which may include including the device in the mirroring scheme, restoring mirror state data to the device and adding the device to the list of boot devices. Even if the system includes only two mirrored boot devices and one of them fails, it can continue operation and can reboot successfully without using stale data.

US Patent:

6941556, Sep 6, 2005

Filed:

May 24, 1999

Appl. No.:

09/317714

Inventors:

Peter B. Kessler - Palo Alto CA, US
Swee Boon Lim - Mountain View CA, US
Peter Vanderbilt - Mountain View CA, US
Michael L. Powell - Palo Alto CA, US
Li-Wen Chen - Cupertino CA, US
Dwight F. Hare - La Selva Beach CA, US
Alan Snyder - Palo Alto CA, US

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

G06F009/00

US Classification:

719316

Abstract:

A system and method provides dynamic and static type support for multiple definitions of individual types in a distributed object environment. Fully scoped object names incorporating prefixes are used to distinguish objects. The fully scoped names are used for both dynamic type determination through an interface repository and for statically compiled types in client and server stub routines. In the interface repository, a prefix naming context is provided for each root interface definition language context, allowing multiple definitions for objects with the same interface definition language object name, where each such definition resides in a separate prefix naming context. In one embodiment, the prefix naming contexts are defined by prefix interface definition objects. In another embodiment, the fully scoped object names are embedded by an interface definition language compiler in stub and skeleton code routines. RRS.

US Patent:

7734605, Jun 8, 2010

Filed:

Aug 22, 2005

Appl. No.:

11/209305

Inventors:

Jean Chouanard - Redwood City CA, US
Swee B. Lim - Cupertino CA, US
Michael J. Wookey - Los Gatos CA, US

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

G06F 17/30

US Classification:

707705, 707736, 707752

Abstract:

Methods and systems for effecting cleanup and other policies for queues and similar data stores, which policies account for preferences of consumers of the data so stored. Queuing policies for local storage of one or more documents for transmission from the local storage to one or more end points for said documents are retrieved from a remote registry. Upon such retrieval, the documents are enqueued according to the queuing policies, unless, prior to such enqueuing the queues into which the documents are to be placed require creation or clean-up, for example according to one or more queue quota policies. In some cases, the documents are queued according to associated qualities of service to be accorded to delivery of said documents. Such qualities of service may be specified in the queuing policy.

US Patent:

7773527, Aug 10, 2010

Filed:

Aug 22, 2005

Appl. No.:

11/209293

Inventors:

Jean Chouanard - Redwood City CA, US
Swee B. Lim - Cupertino CA, US
Michael J. Wookey - Los Gatos CA, US

Assignee:

Oracle America, Inc. - Redwood City CA

International Classification:

G01R 31/08
G06F 11/00
H04L 1/00
G06F 15/16

US Classification:

370241, 370244, 370245, 370247, 709232

Abstract:

A quality of service policy for one or more documents for transmission from the local storage to one or more end points for said documents through a communication system is retrieved from a remote registry associated with an offering, and said documents are enqueued according to said quality of service policy. In some cases, the registry may be co-hosted with at least one of the document end points. The quality of service policy may be derived from a transport policy for said one or more documents, and may even be such as to not specify a quality of service for delivery of some or all of the documents. In some cases, XML documents may be used to set forth the quality of service policies.