[fpc-pascal] multidimensional dynarrays SetLenght and memory layout
florian at freepascal.org
Sat Sep 16 09:45:59 CEST 2006
Marc Santhoff schrieb:
> since I managed to get static arrays handed over to a C library I want
> to know if this is possible for dynamic arrays too.
> I browsed the docs and source but I'm not able to find the actual
> implementation of the SetLength() procedure for dynarrays.
> Where is it
> or maybe better: how does it work?
> I think I'll know when the first question is answered, but: how is the
> memory for dynamic arrays handled, is there a chance of forcing it to be
> one continuous block on the heap for giving a pointer to it to an
> external function?
No. Dyn. arrays involve several compiler magic. A dyn. array is
basically a pointer to the real dyn. array containing size information
and the data.
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