From: Eric Hodel <drbrain@...7.net>
Date: 2011-02-09T07:43:55+09:00
Subject: Re: C extension: How to check if a VALUE is still alive (not being GC'ed)?

On Feb 8, 2011, at 12:53 AM, Iņaki Baz Castillo wrote:
> 2011/2/8 Tony Arcieri <tony.arcieri@medioh.com>:
>>> After rechecking it I strongly think I must store the object "query"
>>> in a Hash. If not, the object clearly "dissapears" and could be
>>> legitimately GC'ed at any time.
>> 
>> I'd think the resolver object would hold on to all active queries until
>> completed.
> 
> Yes, that's work: the resolver object contains a hash attribute in
> which queries are stored until completed.

Use a ruby hash and supply mark and GC callbacks to Data_Wrap_Struct so the GC will keep track of it.