Report of Session: Language Changes for Scheduling, Modeling and Analysis chair: Andy Wellings rapporteur: Tullio Vardanega Introduction The session included four position papers, three of which share a common theme: how to permit more exible scheduling in Ada 95. With this setting, the goal of the session was to analyse the proposed language extensions and to determine those, which IRTAW should carry. The chair clari ed that the supported proposals should be turned into Ada Issues (AIs) by selected representatives of IRTAW-11 and submitted for consideration by the Ada Rapporteur Group (ARG) as part of the on-going language revision process. The topics to cover in the session ranged: mechanisms for exible scheduling allowing priority ceiling changes accessing delay queues execution time clocks support for sporadic/deferrable server application-de ned schedulers Ada compilation to hardware. Dynamic Ceilings The notion of dynamic ceilings is not new to the Ada real-time community, which has always viewed it as an especially convenient means to support mode change situations. The group recalled that, in the making of the Ada 9X process, the feature was considered too complex for the language. Yet, this is no longer the case as mature analysis
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Report of session: language changes for scheduling, modeling and analysis
Wellings, Andy; Vardanega, Tullio
Follow ACM SIGAda Ada Letters
, Volume XXII (4)
Association for Computing Machinery – Dec 1, 2002
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