Why liveness failure does not occur in single-threaded program?

Question

I have been reading Java Concurrency in Practice. I have seen one statement that says :

Liveness failure such as deadlock, livelock or starvation do not occur in single-threaded programs.

However, let us see an example. If single-threaded app makes I/O request before rendering view, and I/O request takes infinite time conceptually / theoretically. Single-thread app does make forward progress and blocks itself, eventually "nothing good happens".

My question is that is it just a proof that liveness failure may happen in single-threaded programs? Or I may have understood liveness failure wrong?

Answer 1

I get your point. Let us see your example. Because it will take infinite time. So even if there are thousands threads, it is also Liveness failure for your thought. And

liveness is a concurrent application's ability to execute in a timely manner

So it's impossible.