If someone else feels like tackling this, please go ahead, and let us know what you come up with :)

Your demo script works for me as is, if you change the XSub (my_print) to: 
void my_print(SV * fh) {
    dSP;

    ENTER;
    SAVETMPS;

    PUSHMARK(SP);
    XPUSHs(sv_2mortal(fh));
    XPUSHs(sv_2mortal(newSVpv("TEXT", 0)));
    PUTBACK;

    call_pv("MyFH::PRINT", G_DISCARD);

    FREETMPS;
    LEAVE;
}

[download]
Update: Changed PUSHs(fh) to XPUSHs(sv_2mortal(fh)). (Still sems to do the required task.)

This can quite possibly be improved (there are a few things that I ought to check regarding sins that are perhaps being committed) ... but, given the convoluted nature of what it does, I'm not even sure that it's helpful.

Cheers,
Rob

In reply to Re^2: Inline C + IO::Handle by syphilis
in thread FCGI + Inline::C fast stream out! by mrakus

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