Re: VMS shareable images, what's wrong with them?

Article View: vmsnet.internals

Article #305

#305

From: Saul Tannenbaum
Date: Wed, 07 Oct 1992 18:38

28 lines
1750 bytes

In article <1992Oct6.201520.24059@e2big.mko.dec.com>, lionel@quark.enet.dec.com (Steve Lionel) writes:
> 
> Dynamic linking has been
> available for some years on VAX/VMS through LIB$FIND_IMAGE_SYMBOL.
> --

While LIB$FIND_IMAGE_SYMBOL is far,far better than nothing, I would contend
that it is *not* dynamic linking, it's run time activation of a shared
image. Real dynamic link as implemented in e.g. Multics, should not require
the writing of code for it to work.

Real dynamic linking (the resolution of external references at image
activation time) should have been in VMS since day 1, and LIB$FIND_IMAGE_SYMBOL
is, IMHO, a fairly ugly kludge to graft in those capabilities after the fact.

> 
> Steve Lionel                    lionel@quark.enet.dec.com
> SDT Languages Group
> Digital Equipment Corporation
> 110 Spit Brook Road
> Nashua, NH 03062

********************************************************************************
Saul Tannenbaum                         |
Manager, Scientific Computing           |Internet: STANNENB@HNRC.TUFTS.EDU
USDA Human Nutrition Research Center on |
    Aging at Tufts University           |
*********************** Standard Disclaimers Apply *****************************

Technical Details

Message-ID: <1992Oct7.133839.432@hnrc.tufts.edu>

Path:

arc1-ca.pugleaf.net!sparky!uunet!stanford.edu!agate!spool.mu.edu!uwm.edu!linac!att!bu.edu!news.tufts.edu!news.hnrc.tufts.edu!saul_sy

References: <Bvo7FC.M01@ithaca.com> <3025@mitech.com> <1992Oct6.201520.24059@e2big.mko.dec.com>

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!sparky!uunet!stanford.edu!agate!spool.mu.edu!uwm.edu!linac!att!bu.edu!news.tufts.edu!news.hnrc.tufts.edu!saul_sy
From: saul_sy@hnrc.tufts.edu (Saul Tannenbaum)
Newsgroups: vmsnet.internals,comp.os.vms
Subject: Re: VMS shareable images, what's wrong with them?
Message-ID: <1992Oct7.133839.432@hnrc.tufts.edu>
Date: 7 Oct 92 18:38:39 GMT
References: <Bvo7FC.M01@ithaca.com> <3025@mitech.com> <1992Oct6.201520.24059@e2big.mko.dec.com>
Organization: USDA HNRC at Tufts University
Lines: 28

Reply to Parent Message