Why do you think it's a lot? MVar are a teeny tiny and convenient primitive of communication, and I don't see why they wouldn't suit your need.
Sure a throwTo would do the trick... But they're is "do the trick" and "do the job", you see?
Using STM and TVars *would* be kind of overkill.
2012/2/8 JP Moresmau
<jpmoresmau@gmail.com>
Hello, I'm wondering what's the best strategy to use in the following scenario:
- 2 threads
- One perform some work that will take time, possibly go on forever
- Another waits for user input (like commands from the keyboard)
that affects thread 1 (causing it to stop, in the simplest case)
I've read a bit on MVar and channels, but they seem to be a lot for
cases where the reading thread block for input. In my case, I expect
to have "something" that thread 2 updates when an event occur, and
thread 1 checks it regularly. So thread 1 should not block, but should
check "is there something" and there is, act on it, otherwise continue
doing what it was currently doing. I suppose I could just tryTakeMVar
on a MVar, but is there something more adapted to my needs?
Thanks!
--
JP Moresmau
http://jpmoresmau.blogspot.com/
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