10 Dec
2002
10 Dec
'02
7:10 p.m.
On Tue, Dec 10, 2002 at 10:28:29 +0100, David Olofson wrote:
The solution in SyncModular is much simpler, theres a big "Compile" button
and when you press it the sound goes away for a second or so :)
it'd still
be interesting to know how the sync problems this
method poses are solved: you cannot rely on executable code
modifications to be atomic. an indirect jump instruction is
not guaranteed to work ok: a pointer on x86 is 32 bits, and
atomic is 24 bits (besides, indirect jumps have ill influence
on the cache). could do this with branching though -- but you
don't want your dsp code interspersed with volatile if()s.
There's no problem if you just wait until no processing is going on
(this is when you'd normally block on the audio deice), and then
switch in the new version. Obiously, you'll have to remake connections and
all that stuff as
well, but that's no different from non-compiling approaches.
Well, you dont because the connections are part of the code (at the lower
levels at least).
I think this is one of the things that makes it efficient.
- Steve