[PD-dev] message passing

Krzysztof Czaja czaja at chopin.edu.pl
Fri Jun 7 14:03:08 CEST 2002


thanks Guenter,

indeed, I would happily choose pre-allocation method -- this is
a default in 'testmess' class.  But I need to sort out two things:

. how to handle reentrant calls

. whether/when to collect the garbage.

My second favourite is the stack method, which, unfortunately,
requires choosing a more or less arbitrary limit for a passable
message length.

Then, there is a mixed solution of choosing the best method each
time the function is called, depending on current state of an
object and on input data size.  But I am afraid it is too
complicated to maintain separately for every class.

Btw, I have performed a few more tests, this time with randomized
message lengths, and using another, gcc-2.96-based system.  The
results for [testmess heap] are much worse than I expected...

Krzysztof

? wrote:
...
 > Frequent memory allocation should always be avoided, so method 5 is the
 > best way to go. If your buffer gets to small, reallocate its memory
 > increasing it by an appropriate size, that has
 > to be done only in a few cases, so most of the time you will get away
 > with the best of both worlds, no memory allocation and dynamic space,





More information about the Pd-dev mailing list