Re: CVS commit: src/lib/libc/resolv

[christos%zoulas.com@localhost (Christos Zoulas)]

On Oct 24,  9:20am, ty%sarna.org@localhost (Ty Sarna) wrote:
-- Subject: Re: CVS commit: src/lib/libc/resolv

| On Oct 24, 2009, at 9:08 AM, Ty Sarna wrote:
| 
| > Unfortunately there's no way for me to use this feature currently. I  
| > think it would be sufficient if __res_check() were exposed and  
| > returned a flag indicating wether there was a changed or not. I will  
| > want to do some filtering of the search list in some cases, and it'd  
| > be better to build up my private modified copy of the search list  
| > only when the config changes rather than trying to figure it out on  
| > every query.
| 
| Actually, better yet, return the time of last change instead of a  
| flag. In the case of a threaded program that uses both the getXXX API  
| and the low-level res_XXX api for some reason (perhaps MX lookups or  
| something else not supported at the getXXX level), I guess it's  
| possible that the nss module could end up res_get_state()'ing stale  
| res_states multiple times and re-initing when it doesn't need to. 

Again, the time is kept, so return that instead, or pass a pointer
arg to res_check to populate it, if not null.

christos