Subject: Re: [linux-audio-dev] Re: high level laaga
From: Steve Harris (S.W.Harris_AT_ecs.soton.ac.uk)
Date: Sat May 12 2001 - 12:55:50 EEST
On Fri, May 11, 2001 at 04:24:43PM -0400, Paul Davis wrote:
> only on first execution of any function. after that, the image is
> dynamically altered and the PIC function reference is replaced by a
> "true" reference. this is my understanding, but it may be naive.
OK, that sounds good, my knowledge is v. out of date.
> it might be a design decision to do this "lazily" when dlopen() is
> used. i've certain noticed backtraces in gdb indicating that that
> we seem to be doing run-time lookup of PIC tokens, but i'm not sure if
> that was during dlopen() or later.
I seem to remeber significant speed differences between ladpsa plugins
compiled PIC and not (you can often get away with one non-PIC plugin).
That may have been on short runs, where the lookup would be proportionally
expensive.
- Steve
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