Re: XS N' void (*f) (void)

Answering my own question ... I rather think that you cannot. I replaced my old C callback-set-function with this--it does exactly what I wanted in the first place:

static SV * fp = (SV*) NULL;

void call_funky() {
    dSP;

    if(fp == (SV*) NULL)
        return;

    PUSHMARK(SP);
    perl_call_sv(fp, G_DISCARD);
}

MODULE = sometin  PACKAGE = somethin

void
funky(f)
    SV *    f
    CODE:
    if (fp == (SV*)NULL)
        fp = newSVsv(f);
    else
        SvSetSV(fp, f);
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Re: Re: XS N' void (*f) (void) by tye (Sage) on Dec 23, 2000 at 03:15 UTC
A bit late for a reply, but... Very nice job on handling the call-back. You make it look so simple that I'm ashamed that I never got that far when I had this challenge. (: I guess it gets trickier if you have one call-back per object and need to pass the object in to the call-back function, which is what I was doing, but that still sounds doable based on what you did. Anyway, I was really replying to mention the FFI module that supports building call-backs at run time, usually for use with dynamic libraries. I haven't actually gotten to use it since I found out about it, but I've heard good things about it. - tye (but my friends call me "Tye")	[reply]

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Re: Re: XS N' void (*f) (void)
by tye (Sage) on Dec 23, 2000 at 03:15 UTC

A bit late for a reply, but...

Very nice job on handling the call-back. You make it look so simple that I'm ashamed that I never got that far when I had this challenge. (: I guess it gets trickier if you have one call-back per object and need to pass the object in to the call-back function, which is what I was doing, but that still sounds doable based on what you did.

Anyway, I was really replying to mention the FFI module that supports building call-backs at run time, usually for use with dynamic libraries. I haven't actually gotten to use it since I found out about it, but I've heard good things about it.

tye

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