Lecture10 - Click to edit Master subtitle style 8/1/11...

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Unformatted text preview: Click to edit Master subtitle style 8/1/11 Lecture10 COP 4600 Operating Systems Fall 2010 Dan C. Marinescu Office: HEC 439 B Office hours: Tu-Th 3:30-4:30 PM Lecture10 8/1/11 n Last time: n Computer System Organization. Hardware and software modules. Optimization. DMA, memory mapped I/O. The file abstraction. Case studies: UNIX File System; URLs n Today n Soft modularity Procedure call conventions and the memory map; the stack. Errors. Strongly-typed languages help enforce modularity. n Enforced modularity; message passing and the client-server model. Example of a client server system: WWW. Client-server organization. Heterogeneity; little-endian and big-endian representation Timing, response time. Trusted intermediaries. Case study the X11 system. n Peer-to-peer systems. n Remote Procedure Call (RPC) Lecture 9 Tuesday September 21, 2010 Lecture10 22 Lecture10 8/1/11 Example: procedure MEASURE (func) start_time GET_TIME(SECONDS) funct() end_time p GET_TIME(SECONDS)...
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Lecture10 - Click to edit Master subtitle style 8/1/11...

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