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Fri Jul 17 23:37:31 EDT 2020

Blocking on conditions

Context: implementing a simple multitasking system.

The core decision for a simple system seems to be:

a) round robin poll-based

b) some kind of synchronous event system (e.g. CSP)

The former is MUCH simpler to do, because events are implicit.  You
don't have to track when something becomes true, just that at some
time in the future, somone will notice it has become true.  So this is
in essence asynchronous.

Conditions seem much more general as opposed to synchronous event
propagation.

Also, callbacks seem to turn into CSP very naturally once they become
recursive.



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