Will a single core computer hang during while(1) {}?

Question

Programming

1) Let's say there is such a program in c ++

int main()
{
while(1) {};
}

Imagine that we have a single-core computer and an operating system that supports multi-threading. Is it true that this program will lead to a complete freeze of the computer (Other threads will not be able to execute, because the kernel will not be able to interrupt the thread, since this program does not have a kernel system call, and therefore there is no one to interrupt the thread.)

Answer 1

Depends on the operating system and hardware.
If we are talking about windows, then starting from wine 9x, the operating system periodically receives control even if there are hung processes.

Answer 2

With preemptive multitasking, after a certain time, an interrupt will be generated from which the OS will switch this thread to another. There will be no hangup. (Windows, Linux, etc.)
With cooperative multitasking, until a thread reports that it has completed a task, there will be no switching to another one. Hang up.

Answer 3

If the process is set to REALTIME, then "true". In the general case, no.