On Mon, 29 Aug 2011, Dan Wilcox wrote:
I was talking about sending a large list through libpd which, I assume, is doing some sort of copying of floats as it translates from the libpd api to the internal pd api.
Oh, yeah... if you use z_libpd.h, it copies the floats, whereas with m_pd.h, you have the option to have your data as atoms in the first place, so that they don't have to be copied.
Besides, isn't there some sort of limit on the length of lists or does libpd handle this for you?
With z_libpd.h, you have an artificial limit of 32 atoms per message, whereas with m_pd.h, there's no formal limit ; in practice the OS will limit you to something like 1000000 atoms on the stack at once, for example. On 32-bit Linux, the limit can be as high as 8000000 atoms (64 megs) but I don't remember what the default limits are.
| Mathieu Bouchard ---- tél: +1.514.383.3801 ---- Villeray, Montréal, QC