Hatt Tom writes:

> Thanks !
>  I have tried this method ,but the problem is the main process still
> use old functions , though I have dlclose that .so and then load the
> newer one .
>
>
> what is the reason ?How could I fix this ?

In order for you to be able to dlclose a .so, it must've been initially  
opened with dlopen.

You cannot dlclose a .so that you've linked your executable to, in the usual  
fashion.

If you want to be able to reload a .so, you must manually open it with  
dlopen(), and then use dlsym() to look up the functions' addresses in  
the .so.

After you dlclose() the .so, and dlopen() it back again you must then use  
dlsym() again to look up all the functions' addresses. Even functions that  
have not been changed, in the new version of your .so, might now be loaded  
at a completely different address.


>
>
> 2013/12/1 Sam Varshavchik <mrsam@courier-mta.com>:
> > Hatt Tom writes:
> >
> >> hi:
> >>
> >> Is it possible to reload .so file withour restarting thr process ?
> >>
> >> As I　need to update some functions in my .so  ,  and it is not
> >> pleasure to interrupt the main process . is there way to achive this?
> >
> >
> > Only if you, yourself has manually loaded the .so with dlopen(). Then, you
> > just dlclose() and dlopen() it again.
> >
> > man dlopen
> >
> >
>
>
>
> --
> Best Regards!