pub fn yield_now() -> Option<Yield>Expand description
Cooperatively yields execution to Rayon.
If the current thread is part of a rayon thread pool, this looks for a single unit of pending work in the pool, then executes it. Completion of that work might include nested work or further work stealing.
This is similar to std::thread::yield_now(), but does not literally make
that call. If you are implementing a polling loop, you may want to also
yield to the OS scheduler yourself if no Rayon work was found.
Returns Some(Yield::Executed) if anything was executed, Some(Yield::Idle) if
nothing was available, or None if this thread is not part of any pool at all.