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.
Patent No.:
Date of Patent:
Feb. 17, 2009
Filed:
May. 01, 2003
Evan H. Gewirtz, Lexington, MA (US);
Todd D. Basso, Arlington, MA (US);
Daniel L. Leibholz, Newton, MA (US);
Benjamin C. Cordes, Chelmsford, MA (US);
Evan H. Gewirtz, Lexington, MA (US);
Todd D. Basso, Arlington, MA (US);
Daniel L. Leibholz, Newton, MA (US);
Benjamin C. Cordes, Chelmsford, MA (US);
Sun Microsystems, Inc., Santa Clara, CA (US);
Abstract
The present invention generally relates to synchronization of multiple threads in an out-of-order microprocessor utilizing the insertion of a trap. In one embodiment, while synchronizing multiple running threads, an instruction within a first running thread is identified. Upon identification of this instruction, a trap is inserted into a second running thread. All instructions within the instructional pipeline that are scheduled for execution prior to this trapped instruction must retire before the subsequent execution of the synchronizing instruction. Following the execution of the synchronizing instruction, all instructions within the instruction pipeline slated for execution after the trapped instruction in the remaining threads are flushed and refetched.