[pjc50]

Can you give a brief explanation of that?

It does seem to me that a "pipe with fanout", or similar new type of socket, might be the best way of doing this.

Or if you really want to annoy people, copy the Windows PostMessage() system.

[naasking]

See previous discussion: https://news.ycombinator.com/item?id=12800995

There are various other properties of Bus1 that make it better than all other alternatives, but obviously relying on it makes your program non-portable. IPC is a mess on POSIX systems.