[svlug] ACCU tonight "Threads and Shared Variables in C++11 and elsewhere" Hans Boehm

Walter Vannini walterv at gbbservices.com
Wed Jul 11 08:16:45 PDT 2012


When:      Wednesday, July 11, 2012
Topic:     Threads and Shared Variables in C++11 and elsewhere
Speaker:   Hans Boehm
Time:      6:30pm doors open
         7:00pm meeting begins
Where:     Symantec
         VCAFE building
         350 Ellis Street (near E. Middlefield Road)
         Mountain View, CA 94043
Map:       <http://tinyurl.com/334rv5>
Directions: VCAFE is accessible from the semicircular courtyard between Symantec buildings <http://tinyurl.com/2dccgc>
Cost:      Free
More Info: <http://www.accu-usa.org>

In spite of over 40 years of shared memory parallel programming, there has been a surprising amount of confusion surrounding the basic meaning of shared variables.

Hans will explain the C++11 approach to shared variables (its "memory model") and some of its consequences.  He'll conclude by briefly contrasting it to Java, which poses a more challenging problem, with currently a much less satisfactory solution.

As in many other languages, the C++11 approach is based on a simple interleaving-based semantics for data-race-free programs.  However, we define much more precisely what that means, often resolving prior controversies about embarrassingly simple programs, and exposing flaws in prior approaches.

Hans Boehm is a research manager at HP Labs. He is probably best known as the primary author of a commonly used garbage collection library.  Experiences with threads in that project eventually led him to initiate the effort to properly define threads and shared variables in C++11.  He is an ACM Distinguished Scientist and a former Chair of ACM SIGPLAN. He holds a B.S. degree from the University of Washington, and M.S. and Ph.D. degrees from Cornell University.

Meetings are open to the public and are free of charge.

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The ACCU meets monthly. Meetings are always open to the public and are free of charge. To suggest topics and speakers please email Walter Vannini via walterv at gbbservices.com










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