Embedding C in Perl by Chris Brooks. I've never done XS before, so I'll be happy to see a bit.
Chris said by the time he finished his talk draft, he'd basically rewritten perlxstut.
target C subroutine: the one you want to use
Matt, Chris used AxPoint to put his presentation together and couldn't figure out how to put in angle brackets. Maybe a FAQ candidate?
XS source code file: glue code
Namespace resolution:
XS gives you 2 API functions to install xsubs as Perl subs: newXS() and newXSproto(). Takes
newXS() can't be called from your program. Instead you use DynaLoader, which calls newXS() for you. You subclass DynaLoader and call bootstrap(), a wrapper around some internal functions that eventually call newXS().
XS syntax. Use MODULE and PACKAGE keywords. Before that line, everything is C (or POD).
MODULE = Mytest2 PACKAGE = Mytest2
Perl scalars and things are not just C variables.
I'm being inspired to sit down and learn XS. Tonight. Somebody stop me.
www.organiccodefarm.com/xs.pdf is the presentation slides. Worth reading, along with perlxstut. PerlMonth 1999 articles.
