distributed-closure

Serializable closures for distributed programming. https://github.com/tweag/distributed-closure

Version on this page:0.3.4.0
LTS Haskell 16.3:0.4.2.0
Stackage Nightly 2020-06-29:0.4.2.0
Latest on Hackage:0.4.2.0

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BSD-3-Clause licensed by Mathieu Boespflug
Maintained by [email protected]

Module documentation for 0.3.4.0

This version can be pinned in stack with:[email protected]:dbb5020d9ba721bac3bb2838069f2c3f64203ae67e427045f58d86a42eefc12b,1482

distributed-closure

Build Status

Leverage the -XStaticPointers extension from GHC 7.10 onwards for distributed programming using lightweight serializable closures. This package implements a serializable closure abstraction on top of static pointers. Serializable closures can be shipped around a computer cluster. This is useful for implementing intuitive and modular distributed applications. See this blog post for a hands on introduction and this paper for the original motivation.

Example

In GHC 8 and above, remoting a computation on another node using this library goes along the lines of

data NodeId

-- Assume we're given a spaw primitive.
spawn :: NodeId -> Closure (IO ()) -> IO ()

-- A computation to remote on another node.
hello :: String -> IO ()
hello name = putStrLn ("Hello, " ++ name)

main = do
  name <- getLine
  spawn "someAddress" (static hello `cap` name)

distributed-closure does not implement sending/receiving/spawning closures - that’s left for higher-level frameworks. Only closure creation, composition and (de)serialization.