From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=0.2 required=5.0 tests=BAYES_00,INVALID_MSGID, REPLYTO_WITHOUT_TO_CC autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: fac41,2c6139ce13be9980 X-Google-Attributes: gidfac41,public X-Google-Thread: 1108a1,2c6139ce13be9980 X-Google-Attributes: gid1108a1,public X-Google-Thread: 103376,3d3f20d31be1c33a X-Google-Attributes: gid103376,public X-Google-Thread: f43e6,2c6139ce13be9980 X-Google-Attributes: gidf43e6,public From: donh@syd.csa.com.au (Don Harrison) Subject: Re: Safety-critical development in Ada and Eiffel Date: 1997/07/23 Message-ID: #1/1 X-Deja-AN: 258279226 Sender: news@syd.csa.com.au X-Nntp-Posting-Host: dev50 References: <33CE0BB7.10CE@XYZZYcalfp.com> Organization: CSC Australia, Sydney Reply-To: donh@syd.csa.com.au Newsgroups: comp.object,comp.software-eng,comp.lang.ada,comp.lang.eiffel Date: 1997-07-23T00:00:00+00:00 List-Id: Richie Bielak wrote: :I always thought it would be nice to have postconditions of the form: : : ensure : execution_time < 10 -- 10 milliseconds, let's say : :So an exception would be raised if the routine took too long :to execute. I've also been thinking along these lines since about a year ago. It sits very well with DBC, IMO. Also, the idea of express messages in SCOOP caters for the situation where a time-critical thread *must* execute without fail. (For more information, see Object-oriented Software Construction (2nd ed.) Section 30.8 - "Requesting Special Service"). Don. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Don Harrison donh@syd.csa.com.au