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Jason Johnson wrote:
<blockquote
cite="mid:aa22f0200710240015l4d21d1e4v51f823c1b2fa474b@mail.gmail.com"
type="cite">
<pre wrap="">On 10/23/07, Peter William Lount <a class="moz-txt-link-rfc2396E" href="mailto:peter@smalltalk.org"><peter@smalltalk.org></a> wrote:
</pre>
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<pre wrap="">Of course one could also implement a copy-on-write-bit for objects in
the "read-only-shared-top-level-object-space-of-the-image". In order to
accomplish any work a process must be forked! Also, this way any process
that forks off will need to copy all of the objects it modifies into
it's own private object-space until the process commits it's changes
into the top level object-space or until it aborts.
</pre>
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<pre wrap=""><!---->
Once again I have no idea what you're talking about. I guess you're
not responding to me with this, since the system I'm talking about
would not commit any changes back to a top level process.
</pre>
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<pre wrap="">Concurrency isn't like automatic garbage collection - which is actually
quite broad and complex a field - at all.
</pre>
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<pre wrap=""><!---->
*sigh*. Ok, if you're going to respond to things I say, please read
what I write. Speed reading obviously isn't working. I said message
passing is *ANALOGOUS*.
analogous
adjective
1. similar or equivalent in some respects though otherwise
dissimilar; "brains and computers are often considered analogous";
"salmon roe is marketed as analogous to caviar"
Manual memory management is hard to do and does not scale or compose
well as explained in the email I originally linked to.
Shared state fine grained locking is hard to do and does not scale or
compose well as explained in the email I originally linked to.
</pre>
</blockquote>
Hi,<br>
<br>
Yes I read what you said. I simply don't think they are analogous. <br>
<br>
Certainly the parallels that you see between them are not clear from
your analogy since this reader didn't get it. <br>
<br>
Many things don't scale well, or don't compose well in computer
science. It doesn't mean that they are all analogous.<br>
<br>
Now I've not yet had a chance to read the PDF pointed to by Jon Hylands
but it seems to me that they are more dissimilar than similar.<br>
<br>
Peter<br>
<br>
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