Mark Volkmann wrote:
> If I create a thread and don't want it to be eligible to run until I
> decide to make it eligible later, how do I make it sleep? In other
> words, what's the opposite of Thread.wakeup?
>
> Thread::stop stops the execution of the current thread. I need a way
> to stop execution of a thread that is not the current thread so that
> it won't be scheduled.

You use a ConditionVariable.  See the Queue example at
http://www.rubygarden.org/ruby?MultiThreading
You need to invoke cond.wait and cond.signal.  HTH

Kind regards

    robert