Event-based synchronization

Details Event-based synchronization Event-based synchronization

2006-10-03

2006-10-03

Thomson, William (Department: 2194)

Electrical computers and digital processing systems: virtual mac

Task management or control

Process scheduling

C719S313000

Reexamination Certificate

active

07117496

ABSTRACT:
A synchronization method and apparatus defines event objects to enable synchronization of execution entities (e.g., threads). In one arrangement, the synchronization method and apparatus is used in conjunction with a Unix operating system. By defining event objects on which threads or other execution entities can wait upon, multiple threads can wait on one event, or alternatively, one thread can wait on multiple events. Furthermore, using the event-based synchronization method and apparatus, it is possible to specify behavior, particularly when one thread or other execution entity waits on multiple events. For example, the behavior specified can be that a condition is satisfied if any of the events occur, if all of the events occur, or some other logical combination of events occur.

REFERENCES:
Pitts, Queues—Array Implementation—Functions, pp. 1-6.
IBM, Event Control Block Wait and Post Semantics for Distributed Computing Environment / Posix Threads, Jun. 1996, vol. 39, pp. 223-228.
Sun, Introduction to Library functions, Nov. 27, 2001.
“Guide to DECthreads,” Open VMS Alpha Version 7.2, Open VMS VAX Version 7.2, Compaq Computer Corporation, Jan. 1999, Chapters 1-3.

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