Hi.
I grew up tired of counting milliseconds, so I wrote a small library[1]
that allows me to specify time units for timeouts and convert between
them. The library also provides wrapped versions of 'timeout' and
'threadDelay' functions:
> threadDelay $ 1 # Minute + 30 # Second
Nanosecond precision seems to be enough for RTS and POSIX calls and it
also provides a good range for 64-bit representation:
> maxBound :: Timeout
30500 w 3 d 23 h 34 m 33 s 709 ms 551 us 615 ns
One thing that might disappoint some people is that I chose unsigned
underlying type (Word64), which means that "infinite" timeouts cannot be
represented. I think "negative" timeouts essentially are performance
warts (a way of packing `Maybe Word63` into Word64) that muddle equality
and I recommend using `Maybe Timeout` whenever timeout is optional.
[1] http://hackage.haskell.org/package/data-timeout
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