Possibility to add dlinfo() to dlfcn.h?

Ryan Johnson ryan.johnson@cs.utoronto.ca
Thu Feb 2 15:34:00 GMT 2012

On 02/02/2012 10:25 AM, Corinna Vinschen wrote:
> On Feb  2 09:52, Ryan Johnson wrote:
>> Hi all,
>> Before I go off hacking code, is there a particular reason dlinfo()
>> is missing from cygwin's dlfcn.h, other than SHTDI? I know it's not
> I guess it's a case of SHTNI, too, with N == notice or need.  After
> all, it doesn't even have a man page.
>> strictly a posix function, but it is present in the linux systems I
>> have access to and can be rather handy. I considered parsing
>> /proc/$$/maps, but that doesn't guarantee the module is actually
>> loaded (as opposed to merely mmapped).
>> Based on past tangles with cygwin's underbelly I would think some
>> boilerplate surrounding a call to GetLoadedModules() would suffice.
> Not sure about that.  What do you want this function for?  What's
> your use case?
Sorry, you're right -- I'd mostly be interested in the linkmap, and 
forgot about the other request types. I'm hoping the former would help 
introspect unwind sections to construct accurate backtraces from within 
an app. No big deal, tho. I'll play on a linux machine until I see 
whether it's compelling enough to be worth porting to cygwin.


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