[delusional]

Theoretically I'd think you could do the same with niceness. Start a bunch of processes, have them wait on some condition, set their niceness to the value and fire the condition. I'd assume the process with the highest niceness would run first, and as such would get to insert itself into some list first.

[animeshchouhan]

Yeah that's why I generalized the dependency on any scheduler. We can use various properties and methods to achieve the same results.