Transcription of Interlude: Process API
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5 Interlude: Process APIASIDE: INTERLUDESI nterludes will cover more practical aspects of systems, including a par-ticular focus on operating system APIs and how to use them. If you don tlike practical things, you could skip these interludes. But youshould likepractical things, because, well, they are generally usefulin real life; com-panies, for example, don t usually hire you for your non-practical this interlude, we discuss Process creation in UNIX systems. UNIX presents one of the most intriguing ways to create a new Process witha pair of system calls:fork()andexec().
6 INTERLUDE: PROCESS API TIP: GETTING IT RIGHT (LAMPSON’S LAW) As Lampson states in his well-regarded “Hints for Computer Systems Design” [L83], “Get it right.Neither abstraction nor simplicity is a sub-stituteforgettingitright.”
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