[zvrba]

> Why would you want to do that? Use (RPC | shared memory | some other IPC mechanism).

Yes, structured data exchange is the correct answer. When I have the opportunity to code something from scratch, this is the route I take.

[pjc50]

> When I have the opportunity to code something from scratch

But how often does that happen, outside of toy systems and support utilities?

[zvrba]

It happens once in a while. Or you're lucky and stumble upon a team where people made the right choices in the beginning.