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42 lines
1.6 KiB
Markdown
42 lines
1.6 KiB
Markdown
monad-conc [![Build Status][build-status]][build-log]
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==========
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Concurrency is nice, deadlocks and race conditions not so much. The
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`Par` monad family, as defined in [abstract-par][] provides
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deterministic parallelism, but sometimes we can tolerate a bit of
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nondeterminism.
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This package provides a family of monads for potentially
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nondeterministic concurrency, with an interface very much in the
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spirit of `Par`, but slightly more relaxed. Specifically, `Conc`'s
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`IVar` equivalent, `CVar`s, can be written to multiple times.
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The documentation of the latest developmental version is
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[available online][docs].
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`Conc` and `IO`
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---------------
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The intention of the `Conc` monads is to provide concurrency where any
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apparent nondeterminism arises purely from the scheduling
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behaviour. To put it another way, a given `Conc` computation,
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parametrised with a fixed set of scheduling decisions, is
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deterministic. This assumption is used by the testing functionality
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provided by Control.Monad.Conc.SCT.
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Whilst this assumption may not hold in general when `IO` is involved,
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you should strive to produce test cases where it does.
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Contributing
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------------
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Bug reports, pull requests, and comments are very welcome!
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Feel free to contact me on GitHub, through IRC (#haskell on freenode),
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or email (mike@barrucadu.co.uk).
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[build-status]: https://travis-ci.org/barrucadu/monad-conc.svg?branch=master
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[build-log]: https://travis-ci.org/barrucadu/monad-conc
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[abstract-par]: https://hackage.haskell.org/package/abstract-par/docs/Control-Monad-Par-Class.html
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[docs]: https://barrucadu.github.io/monad-conc
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