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Groups > comp.lang.forth > #52735

Re: Data Stack of Just Pointers?

From Ron Aaron <rambamist@gmail.com>
Newsgroups comp.lang.forth
Subject Re: Data Stack of Just Pointers?
Date 2016-11-19 18:05 +0200
Organization A noiseless patient Spider
Message-ID <o0pt79$13e$1@dont-email.me> (permalink)
References <d8771e5d-b872-4376-a206-ceda23a73c43@googlegroups.com>

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On 18/11/2016 20:10, trans wrote:
> Would a Forth implementation with a data stack that just contains reference pointers have really bad performance? Is that just a stupid idea?

Not necessarily.  8th uses just this model, and the performance is decent.

> I've been working on the design for a typed Forth language, and one idea I've had is to keep things very uniform by having the data stack just be pointers to data in the heap. I know it would effect performance so I was thinking there could also be a kind of "cache stack" to pre-fetch the data that the data stack points to. But maybe that would still be really slow, and not worth it?

That's the thought process I went through designing 8th.  The stack just
contains pointers to items. 8th does do reference-counting, which pretty
much requires this model.

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Data Stack of Just Pointers? trans <transfire@gmail.com> - 2016-11-18 10:10 -0800
  Re: Data Stack of Just Pointers? Paul Rubin <no.email@nospam.invalid> - 2016-11-18 10:45 -0800
  Re: Data Stack of Just Pointers? Rod Pemberton <NeedNotReplyHere@xrsevnneqk.cem> - 2016-11-18 20:39 -0500
    Re: Data Stack of Just Pointers? minforth@arcor.de - 2016-11-19 03:14 -0800
      Re: Data Stack of Just Pointers? hughaguilar96@gmail.com - 2016-11-19 18:26 -0800
        Re: Data Stack of Just Pointers? trans <transfire@gmail.com> - 2016-11-19 18:50 -0800
          Re: Data Stack of Just Pointers? hughaguilar96@gmail.com - 2016-11-19 19:54 -0800
      Re: Data Stack of Just Pointers? trans <transfire@gmail.com> - 2016-11-19 18:52 -0800
        Re: Data Stack of Just Pointers? minforth@arcor.de - 2016-11-21 11:46 -0800
    Re: Data Stack of Just Pointers? trans <transfire@gmail.com> - 2016-11-19 13:57 -0800
  Re: Data Stack of Just Pointers? Jan Coombs <jenfhaomndgfwutc@murmic.plus.com> - 2016-11-19 11:27 +0000
  Re: Data Stack of Just Pointers? Ron Aaron <rambamist@gmail.com> - 2016-11-19 18:05 +0200
  Re: Data Stack of Just Pointers? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-20 13:29 +0000
    Re: Data Stack of Just Pointers? Spiros Bousbouras <spibou@gmail.com> - 2016-11-20 15:43 +0000
    Re: Data Stack of Just Pointers? Ron Aaron <rambamist@gmail.com> - 2016-11-20 19:06 +0200
      Re: Data Stack of Just Pointers? Ron Aaron <rambamist@gmail.com> - 2016-11-21 09:09 +0200
        Re: Data Stack of Just Pointers? Paul Rubin <no.email@nospam.invalid> - 2016-11-20 23:17 -0800
          Re: Data Stack of Just Pointers? Ron Aaron <rambamist@gmail.com> - 2016-11-21 09:22 +0200
        Re: Data Stack of Just Pointers? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-11-21 11:12 +0100
          Re: Data Stack of Just Pointers? Ron Aaron <rambamist@gmail.com> - 2016-11-21 12:17 +0200
            Re: Data Stack of Just Pointers? Paul Rubin <no.email@nospam.invalid> - 2016-11-21 10:45 -0800
              Re: Data Stack of Just Pointers? Ron Aaron <rambamist@gmail.com> - 2016-11-21 21:22 +0200
                Re: Data Stack of Just Pointers? Paul Rubin <no.email@nospam.invalid> - 2016-11-21 17:28 -0800
                Re: Data Stack of Just Pointers? Ron Aaron <rambamist@gmail.com> - 2016-11-22 06:49 +0200
                Re: Data Stack of Just Pointers? Paul Rubin <no.email@nospam.invalid> - 2016-11-21 21:13 -0800
                Re: Data Stack of Just Pointers? franck.bensusan@gmail.com - 2016-12-21 13:48 -0800
        Re: Data Stack of Just Pointers? Cecil Bayona <cbayona@cbayona.com> - 2016-11-21 13:22 -0600
          Re: Data Stack of Just Pointers? "Robert L." <No_spamming@noWhere_7073.org> - 2016-11-22 01:53 +0000
            Re: Data Stack of Just Pointers? Cecil Bayona <cbayona@cbayona.com> - 2016-11-21 21:16 -0600
          Re: Data Stack of Just Pointers? Ron Aaron <rambamist@gmail.com> - 2016-11-22 07:01 +0200
        Re: Data Stack of Just Pointers? "Robert L." <No_spamming@noWhere_7073.org> - 2016-11-22 11:37 +0000

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