Paper Details

@InProceedings{Butterfie02,
  title = "{S}emantics of prialt in {H}andel-{C} (tm)",
  author= "Butterfield, Andrew",
  editor= "Pascoe, James S. and Loader, Roger J. and Sunderam, Vaidy S.",
  pages = "1--16",
  booktitle= "{C}ommunicating {P}rocess {A}rchitectures 2002",
  isbn= "1 58603 268 2",
  year= "2002",
  month= "sep",
  abstract= "This paper discusses the semantics of the prialt construct
     in Handel-C. The language is essentially a static subset of
     C, augmented with a parallel construct and channel
     communication, as found in CSP. All assignments and channel
     communication events take one clock cycle, with all updates
     synchronised with the clock edge marking the cycle end. The
     behaviour of prialt in Handel-C is similar in concept to
     that of occam, and to the p-priority concept of Adrian
     Lawrence's CSPP. However, we have to contend with both input
     and output guards in Handel-C, unlike the situation in
     occam, although prialts with conflicting priority
     requirements are not legal in Handel-C. This makes our
     problem simpler than the more general case including such
     conflicts considered by Lawrence. We start with an informal
     discussion of the issues that arise when considering the
     semantics of Handel-C's prialt construct. We define a
     resolution function (R) that determines which requests in a
     collection of prialts become active. We describe a few
     properties that we expect to hold for resolution, and
     discuss the issue of compositionality."
}

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