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- Path: sparky!uunet!mcsun!uknet!yorkohm!don
- From: don@ohm.york.ac.uk (Don Goodeve)
- Newsgroups: comp.sys.transputer
- Subject: Re: What is an event-driven system?
- Message-ID: <1992Dec22.182544.7295@ohm.york.ac.uk>
- Date: 22 Dec 92 18:25:44 GMT
- References: <147@autro1.UUCP>
- Organization: Electronics Department, University of York, UK
- Lines: 29
-
- In <147@autro1.UUCP> teig@autro1.UUCP (Oyvind Teig) writes:
- >Event driven systems
-
- >I have always thought of occam as "event driven". A single SEQ
- >occam program may be event driven with the external world, but not
- >internally. When PARs come into it, isn't occam really VERY
- >event driven - even more than MS-Windows programs??
-
- Seems to be a fair point to me. MS windows and other OO systems
- are based on asynchronous communications. An event happening does
- not require an immediate response, only that the message is queued
- for processing. Occam has strong synchronisation in that if a
- communication occurs, both parties to the communication implicitly
- know when that communictation has occurred. These synchronisation
- *events* control the execution flow, and hence drive the exection.
-
- Therefore, I would consider 'event-driven' to be a suitable
- term describing the execution of an occam process and by implication
- an occam program.
-
- Comments?
- Don
-
-
- --
- Don Goodeve|Adaptive Systems|Electronics Dept|University of York
- email: don@ohm.york.ac.uk|-------->I speak from my own angle...
- --Disclaimer:--------------------------------------------------
- |In the beginning was the word. Man attempted to speak the word |
-