Re: Self-modifying code

Tom Lane wrote:
> Alvaro Herrera <alvherre(at)commandprompt(dot)com> writes:
> > I just read an article on LWN.net about the usage of self-modifying code
> > for selecting the optimum code for a given operation at run time.
>
> That went out with hula hoops, I think. For sure the security
> implications of making your code segment writable mean that the bar for
> "is it worth it" is a WHOLE lot higher than "it might possibly make TAS
> a bit faster".

Actually I was thinking in the issue with defining different sets of TAS
for SMP versus non-SMP. There was discussion that suggested handing off
two set of binaries, one for each configuration. So it's not just "it
might possibly" but rather a possible answer to that problem, which was
not mentioned as minor and for which a solution was not found AFAIR.

However it's not something that I'll personally code, so I'll let
somebody else argue about it if they really care about the issue. I
just felt the need to mention it.

--
Alvaro Herrera http://www.CommandPrompt.com/
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