Re: GModule unloading

[David Nečas (Yeti) <yeti physics muni cz>]

On Wed, May 23, 2007 at 09:33:58AM -0500, Matt Hoosier wrote:
> 
> That's not really what I'm asking. Suppose there's a regular,
> garden-variety shared library intended for any old application to use.
> It's DSO is /usr/lib/libboo.so.0.1.2. Boo registers GTypes statically
> like any other shared library does.
> 
> Now some GModule comes along and happens to dynamically link against
> libboo. The application which loads this module does not itself
> require libboo. So at the time that the module is dlopen()ed under the
> hood, libboo gets dynamically loaded also.
> 
> What happens when the GModule is unloaded? Does libboo also get dumped
> because the application itself doesn't directly link against
> liboo.so.0.1.2, or does it stay resident forever?

It is unloaded, well, at least on common platforms (not
including MS Windows, have no idea what's going on there),
I cannot guarantee every system does it though.

If the libraries have exposed some static data, for instance
through the GType system, things can break when they
disappear.

Yeti

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