Sorry about the original post. I thought you had somehow gotten the pointer to the virtual function table and wanted to pass it to another process so the other process could dereference it. I've seen this done when creating dynamic code. Apparently my brain doesn't work all the time.

Anyway, when you say you want to "share Objects" between processes, do you mean you want to reuse your classes in different binaries? If that's the case, then compiling the code into a binary creates a virtual function table with an accompanying pointer to the table in the executable text area of the binary. Each binary gets a private copy of the virtual function table, so references to virtual functions are resolved. In this case, you don't necessarily need a shared library.

If you are familiar with an archive library, then you know you place code that you reuse often in the archive library to make it easier to use at link time. The disadvantage of a standard archive library is that if you change the code or data in the source and rebuild the archive library, you have to rebuild all the code that uses the library. You also have larger binaries than you need, because each binary has a private copy of the executable text from the archive library. If it's a small archive library, this isn't a big deal. However, if you've ended up with a large library, you can waste a good deal of memory each time you run your binary.

The advantages you get using a shared library are that you can change the code in the shared library and you don't have to recompile all of your binaries. You also have only one copy of the executable text in memory and all processes share the text. Each process gets a private copy of any data contained in the shared library. In this case, each process will still get a local copy of the virtual function table.

The internals of the AIX XCOFF image and how the linking is actually done is fairly complex, but the process of building a shared library is fairly simple. If you have the AIX hypertext docs loaded, search on shared libraries and there should be some examples.