Monitors: an operating system structuring concept
Communications of the ACM
BLISS: a language for systems programming
Communications of the ACM
PASCAL user manual and report
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Pattern recognition systems in the artificial intelligence field have been based on the assumption that components of the system should be invoked not by directly calling them, but by running data across their sensors and having the invocation take place when a defined pattern is found. Most systems programming, however, has taken a completely different route; the emphasis there is on structures of execution and data types. A new approach to systems programming languages where a bridge is made between structure and pattern-directed invocation is described. The syntax of pattern-directed invocation, along with the semantics of a support structure for message receiving and sending necessary for pattern-directed invocation of routines is presented. Finally, some conclusions are made about pattern-directed invocation, and further areas of work are stated.