International Business Machines Corporation

Qualcomm Incorporated

Donald Robert Padgett

Lucian Codrescu

Sujat Jamil

Erich Plondke

William C Anderson

Muhammad Ahmed

James W Arendt

Paul P Giangarra

Ravindranath Kasinath Manikundalam

James Michael Phelan

Taylor Simpson

A multithreaded processor device is disclosed and includes a processor that is configured to execute a plurality of executable program threads and a mode control register. The mode control register includes a first data field to control a first execution mode of a first of the plurality of executable program threads and a second data field to control a second execution mode of a second of the plurality of executable program threads. In a particular embodiment, the first execution mode is a run mode and the second execution mode is a low power mode.

Controlling execution mode of program threads by applying a mask to a control register in a multi-threaded processor

Lazy loading of executable library objects reduces operating system overhead and memory commitment requirements by postponing object loading until object references are expected. Initial task loading allocates only the main executable and library objects referenced by that executable. Secondary referenced objects are not allocated. Object references cause page faults for allocated but not loaded pages. Page fault handling causes loading and fixup of executable objects. Page fault handling also determines the next level of object references and allocates memory for the next object level. Shared memory systems allow sharing of executable objects until explicitly referenced. Once referenced, memory fault causes copying and fixup to referencing task memory area.

System and method for lazy loading of shared libraries

Growing community of inventors

Austin, TX, United States of America

Donald Robert Padgett