>while that's harder to do between processes and you have to resort to copying data in the queue instead. I could be wrong - I've never done it, but I understo

>while that's harder to do between processes and you have to resort to copying data in the queue instead. I could be wrong - I've never done it, but I understood that you can even store POSIX mutexes and condition vars in shared mem so that 2 processes (or more?) can process data without copying, so long as they use the both use the same locks stored in the shared memory.