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%T Parallel Usage Checking \- an Observation
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%A  Barry M. Cook
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%E Peter H. Welch,  Adam T. Sampson,  Jan Bækgaard Pedersen,  Jon Kerridge,  Jan F. Broenink,  Frederick R. M. Barnes
%B Communicating Process Architectures 2011
%X One of the great strengths of CSP based concurrent
   programming languages
(such as occam) is the support
   provided to the programmer in avoiding the
creation of
   erroneous programs.
One such support &ndash; <i>parallel
   usage checking</i> &ndash;
detects program behaviours that
   may leave a variable in an unpredictable
state.
Current
   implementations of this check are safe but can lead
   to
inefficient program implementations.
In some cases, a
   simple program
transformation can be used to demonstrate the
   safety of programs that would
otherwise fail existing
   tests.
By presenting a simple (but generic) example,
I will
   show that using such a transformation allows the creation of
   more
efficient programs.