(j3.2006) Question from a colleague
Tue Apr 7 14:36:43 EDT 2009
A colleague asked me whether there is a performance benefit if the
compiler is informed that it is not necessary for a procedure to be
thread safe. This actually originated in a discussion of iterators in
python, CLU and alphard, where the activation record has to be preserved
between suspension and resumption, as for a coroutine. My colleague did
ask, however, whether our code would run faster if we could tell the
compiler it didn't need to be thread safe. We use 5 million cpu hours
per year, so a little improvement makes a big difference.
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