Lecture6n - Click to edit Master subtitle style Lecture 6...

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Unformatted text preview: Click to edit Master subtitle style 8/1/11 Lecture 6 COT 4600 Operating Systems Spring 2011 Dan C. Marinescu Office: HEC 304 Office hours: Tu-Th 5:00 – 6:00 PM Lecture 6 8/1/11 n Last time: n Complexity of Computer Systems n Iteration n Names and The Basic Abstractions n Today: n Discussion of “Hints for Computer Systems Design” by Butler Lampson. n Basic Abstractions ¨ Memory. ¨ Interpreters. ¨ Communication links. n Next time ¨ Naming; n Use by: value/name; Binding and indirection n Generic naming model n Practical design of naming scheme; Contexts, Name overloading Lecture 6 – Tuesday, February 1, 2011 22 Lecture 6 Lecture 6 8/1/11 Lecture 6 3 Names and the three basic abstractions n Memory & stores named objects ¨ write(name, value) value & READ(name) ¨ file system: /dcm/classes/Fall09/Lectures/Lecture5.ppt n Interpreters & manipulates named objects ¨ machine instructions ADD R1,R2 ¨ modules V Variables call sort(table) n Communication Links & connect named objects ¨ HTTP protocol used by the Web and file systems Host: boticelli.cs.ucf.edu put /dcm/classes/Spring11/Lectures/Lecture6.ppt get /dcm/classes/Spring11/Lectures/Lecture6.ppt 33 Lecture 6...
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Lecture6n - Click to edit Master subtitle style Lecture 6...

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