async: Run IO operations asynchronously and wait for their results

[ bsd3, concurrency, library ] [ Propose Tags ]

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).

Modules

[Index] [Quick Jump]

Flags

Automatic Flags
NameDescriptionDefault
benchDisabled

Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info

Downloads

Note: This package has metadata revisions in the cabal description newer than included in the tarball. To unpack the package including the revisions, use 'cabal get'.

Maintainer's Corner

For package maintainers and hackage trustees

Candidates

Versions [RSS] 1.0, 1.1, 1.2, 1.3, 1.4, 2.0.0.0, 2.0.1.0, 2.0.1.1, 2.0.1.2, 2.0.1.3, 2.0.1.4, 2.0.1.5, 2.0.1.6, 2.0.2, 2.1.0, 2.1.1, 2.1.1.1, 2.2.1, 2.2.2, 2.2.3, 2.2.4
Change log changelog.md
Dependencies async, base (>=4.3 && <4.17), hashable (>=1.1.2.0 && <1.5), stm (>=2.2 && <2.6) [details]
License BSD-3-Clause
Copyright (c) Simon Marlow 2012
Author Simon Marlow
Maintainer Simon Marlow <marlowsd@gmail.com>
Revised Revision 1 made by phadej at 2021-11-10T18:53:58Z
Category Concurrency
Home page https://github.com/simonmar/async
Bug tracker https://github.com/simonmar/async/issues
Source repo head: git clone https://github.com/simonmar/async.git
Uploaded by SimonMarlow at 2021-10-04T12:00:56Z
Distributions Arch:2.2.4, Debian:2.2.2, Fedora:2.2.3, FreeBSD:2.0.2, LTSHaskell:2.2.4, NixOS:2.2.4, Stackage:2.2.4, openSUSE:2.2.4
Executables race, conccancel, concasync
Downloads 281946 total (1099 in the last 30 days)
Rating 2.75 (votes: 7) [estimated by Bayesian average]
Your Rating
  • λ
  • λ
  • λ
Status Docs available [build log]
Last success reported on 2021-10-04 [all 1 reports]