Re: SV creation inside XS

You're making the same mistake I (and others) made. That of assuming that newSVrv() creates a new RV that points to the SV passed to it as an argument. It doesn't.

The documentation for the call reads:

newSVrv
Creates a new SV for the RV, rv, to point to. If rv is not an RV then it will be upgraded to one. If classname is non-null then the new SV will be blessed in the specified package. The new SV is returned and its reference count is 1.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.

"Science is about questioning the status quo. Questioning authority".

In the absence of evidence, opinion is indistinguishable from prejudice.

Comment on Re: SV creation inside XS Download Code

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Re^2: SV creation inside XS by llancet (Friar) on Nov 07, 2011 at 01:01 UTC
Got it! But what should I do if I want to bless an exist HV to some package? For instance, if the HV is from somewhere else, and I want to bless it into xstest package...	[reply]
Re^3: SV creation inside XS by BrowserUk (Patriarch) on Nov 07, 2011 at 01:12 UTC
Search perlapi for `sv_bless()` sv_bless Blesses an SV into a specified package. The SV must be an RV. The package must be designated by its stash (see gv_stashpv() ). The reference count of the SV is unaffected. `SV* sv_bless(SV* sv, HV* stash)` [download] With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday' Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice.	[reply] [d/l] [select]
Re^4: SV creation inside XS by llancet (Friar) on Nov 09, 2011 at 01:53 UTC
Is it harmful if I bless a blessed object? If it is, I need some way to know whether my referent is blessed. However, "sv_isobject" works on a reference. Is there any similar thing works on a referent?	[reply]
Re^5: SV creation inside XS by BrowserUk (Patriarch) on Nov 09, 2011 at 03:41 UTC
Re^6: SV creation inside XS by llancet (Friar) on Nov 09, 2011 at 04:43 UTC
Some notes below your chosen depth have not been shown here
Re^5: SV creation inside XS by ikegami (Patriarch) on Nov 09, 2011 at 06:09 UTC
Re^3: SV creation inside XS by ikegami (Patriarch) on Nov 07, 2011 at 02:22 UTC
Take a peek at Re^12: odd line in windows. (If you read the node's ancestors, you'll see that `newSVrv` confuses everyone.)	[reply] [d/l]