Re: [Plplot-devel] New way of getting device info from dyndrivers

[Rafael L. <lab...@ps...>]

* Maurice LeBrun <mj...@ga...> [2003-02-09 21:13]:

> I've not been following the discussion very closely, but does this mean that
> the code currently loads all dynamic drivers at startup time?  If true, this
> seems against the spirit of dynamic drivers, and adds unnecessarily to the
> memory used by the application.

This is what I thought at the beginning and this is why I proposed the
alternative design with the <driver>.rc files.  However here is what Joao
wrote some days ago:

* João Cardoso <jc...@fe...> [2003-02-07 14:51]:

> Your concerns that dlopen() would load all libraries that a driver needs 
> does not apply, as this would only happens if some drivers code is 
> executed, which is not the case. As libtool's info says:
> 
>     "Unresolved symbols in the module are resolved using
>      its dependency libraries"
> 
> As the symbols you are looking for are in the modules, no further 
> loading will occur.

I hope that this is true for all architectures.

At any rate, as Alan pointed out, in the current design the driver moudles
should be dlclosed after the plD_DEVICE_INFO_<dirver> variable is obtained.

-- 
Rafael