Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!rutgers!njin!princeton!phoenix!haahr
From: haahr@phoenix.Princeton.EDU (Paul Gluckauf Haahr)
Newsgroups: comp.lang.c
Subject: Re: C optimizer
Summary: pure system calls
Message-ID: <6627@phoenix.Princeton.EDU>
Date: 24 Feb 89 05:04:07 GMT
References: <3121@ficc.uu.net>
Reply-To: haahr@princeton.edu (Paul Gluckauf Haahr)
Organization: Princeton University, Princeton NJ
Lines: 10

In article <3121@ficc.uu.net> peter@ficc.uu.net (Peter da Silva) writes:
> Can anyone think of any pure system calls? ioctl(fd, TCGETA, tbuf)?

trivial examples are getdtablesize() or getpagesize() from bsd,
at least in the absence of process migration for heterogenous
operating system versions (a safe assumption in 1989).
one might want to consider _exit() pure, as there can be no
second call, but it's largely irrelevant to optimization.

now, who cares?