That's an extreme perspective. I've made extensive use of signals in programs that have shipped to hundreds of millions of users. If you're careful, they work f

That's an extreme perspective. I've made extensive use of signals in programs that have shipped to hundreds of millions of users. If you're careful, they work fine. Yes, POSIX needs something like NT's vectored exception handlers that could allow multiple users of the same signal to cooperate: but that's an API problem, not something inherently "unfixable" about a program being interrupted and temporarily doing something else for a bit.