Re: Pre-emptive or co-operative concurrency (was: Concurrency)

Hi,

context-switches happen only on specific events, which every thread will usually engage in, although it need not always do so:

1 only calls to yield 2 any calls to concurrency library api 3 any allocation

The Yhc concurrency switches every n instructions, and therefore even an "evil" thread cannot lock up the system. Of course, even with fully pre-emptive scheduling, you've still got deadlocks... Thanks Neil