[Ns-developers] GCC 4 -fvisibility=hidden
mathieu.lacage at sophia.inria.fr
Sun Jan 25 11:32:56 PST 2009
On Sun, 2009-01-25 at 19:29 +0000, Gustavo Carneiro wrote:
> 1) a large fraction of performance-sensitive code is also
> 'public' so
> you can't mark it 'hidden' so, you lose all the performance
> gain of this
> marking (there are 3 big items: the packet.h, simulator.h and
> IIRC, I think what GTK+ and friends are doing these days is actually
> maintain a duplicate set of symbols. For each API function, it is
> declared as both a hidden and public, and Gtk+ itself ends up calling
> only the hidden symbols, bypassing the GOT indirection, although a
> public version of the function symbol is also exported.
It's been a while since I did not look at this, so how do they do it ?
More information about the Ns-developers