Monadoc
The latest version of async is 2.2.5-2.

async

Version 2.0.1.1 revision 0 uploaded by SimonMarlow.

Package meta

Synopsis
Run IO operations asynchronously and wait for their results
Description

This package provides a higher-level interface over threads, in which an Async a is a concurrent thread that will eventually deliver a value of type a. The package provides ways to create Async computations, wait for their results, and cancel them.

Using Async is safer than using threads in two ways:

  • When waiting for a thread to return a result, if the thread dies with an exception then the caller must either re-throw the exception (wait) or handle it (waitCatch); the exception cannot be ignored.

  • The API makes it possible to build a tree of threads that are automatically killed when their parent dies (see withAsync).

Changes in 2.0.1.1:

  • Safe Haskell support: Control.Concurrent.Async is now Trustworthy

Changes in 2.0.1.0:

  • Added a Functor instance for Async

  • Added asyncBound, asyncOn, asyncWithUnmask, asyncOnWithUnmask, withAsyncBound, withAsyncOn, withAsyncWithUnmask, withAsyncOnWithUnmask.

  • Added mapConcurrently

  • Added Concurrently (with Applicative and Alternative instances)

Author
Simon Marlow
Bug reports
https://github.com/simonmar/async/issues
Category
Concurrency
Copyright
(c) Simon Marlow 2012
Homepage
https://github.com/simonmar/async
Maintainer
Simon Marlow <marlowsd@gmail.com>
Package URL
n/a
Stability
n/a

Components