Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!cs.utexas.edu!execu!sequoia!rpp386!jfh
From: jfh@rpp386.cactus.org (John F Haugh II)
Newsgroups: comp.unix.internals
Subject: Re: Shared Lib Question (ISC)
Message-ID: <19252@rpp386.cactus.org>
Date: 9 May 91 00:00:52 GMT
References: <276@rwing.UUCP> <162@titccy.cc.titech.ac.jp>
Reply-To: jfh@rpp386.cactus.org (John F Haugh II)
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In article <162@titccy.cc.titech.ac.jp> mohta@necom830.cc.titech.ac.jp (Masataka Ohta) writes:
>In article <276@rwing.UUCP> pat@rwing.UUCP (Pat Myrto) writes:
>>I have noticed with interest the discussion going on regarding shared
>>libraries.  However, what is obvious is that there are several kinds
>>of shared libaries, all using some different scheme to operate.
>
>It proves that the concept of shared libraries is not so simple.

You are confusing the concept and the implementation of the
concept.  I would argue that the wide variety of implementation
schemes is proof that the fundamental concept is very simple.

The trouble (as I see it) is that the C libraries were not
designed well from the start.  The notion that there should
never be global variables with all manner of hidden side
effects was beaten into my brain as a CS undergrad.  Not to
slight Ritchie, et al, but they appear not to have suffered
the same violent abuse at the hands of their instructors ...

Were the code in the C library pure, shared libraries would
be extremely simple to implement.  Data, which isn't sharable,
is the worst of the flies in the ointment.
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