# The following was supposedly scribed by
# [EMAIL PROTECTED]
# on Thursday 10 March 2005 09:04 am:
>In my understanding, Perl functions have no analogous C function
> behind the scenes.
Even worse, aren't C function pointers fixed as of compile time?
>If you need to pass a function argument to some external function, you
> should probably use a wrapper.
Would that require you to set a global variable in your C code? Such as
the below (poorly written) pseudocode, where the callback is to a pure
C function that gets the Perl subroutine from a hardcoded variable.
Something like:
// I'm just making stuff up here, some syntax may be incorrect.
SV* mysub;
void callback_wrap(myCallback) {
// error checking, etc
call_sv(mysub);
}
void perl_method(SV* callback) {
// callback doesn't exist until runtime
mysub = callback;
// callback_wrap has been at one memory address since compiling
some_C_method(callback_wrap);
mysub = SV_NULL; // or something
}
--Eric
--
"Matter will be damaged in direct proportion to its value."
-- Murphy's Constant
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