Article View: comp.sys.amiga.tech
Article #6286Re: PIPEs
From: Ralph Seguin
Date: Fri, 02 Nov 1990 17:31
Date: Fri, 02 Nov 1990 17:31
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1554 bytes
In article <1990Nov2.091542.25505@agate.berkeley.edu> pete@violet.berkeley.edu (Pete Goodeve) writes: > >In <1990Oct19.044319.4851@engin.umich.edu>, >Ralph Seguin (gilgalad@caen.engin.umich.edu) asks: >> Does anybody know whether or not Amiga OS 2.0 will support "true pipes", >> ie pipes ala UNIX? I am considering writing a true pipe handler, but >> I don't want to waste my time if C= is going to do it for me 8-). >> >[I think this topic crops up afresh every month or so, but never mind...] >OK -- what exactly ARE the criteria for "true" pipes? Or at least, which >do you find necessary? I've always felt that the form of unix pipes was The major problem with any of the pipe implementations for the Amiga is that they build "named" temporary files. Kinda bad, when you're trying to use pipes as an IPC with files larger than a megabyte. For instance: ilbmtoppm blah.iff|ppmquant 256|ppmscale -yscale 1.4|ppmtogif >blah.gif Hmmm... Let's see, that's 3 megs worth of temp files. See ya, Ralph
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!samsung!zaphod.mps.ohio-state.edu!caen!gilgalad From: gilgalad@caen.engin.umich.edu (Ralph Seguin) Newsgroups: comp.sys.amiga.tech Subject: Re: PIPEs Keywords: PIPE, IP-Device Message-ID: <1990Nov2.173103.18889@engin.umich.edu> Date: 2 Nov 90 17:31:03 GMT References: <1990Oct19.044319.4851@engin.umich.edu> <1990Nov2.091542.25505@agate.berkeley.edu> Sender: news@engin.umich.edu (CAEN Netnews) Distribution: na Organization: University of Michigan Engineering, Ann Arbor Lines: 21