parallel-io

Combinators for executing IO actions in parallel on a thread pool.

http://batterseapower.github.com/parallel-io

Version on this page:	0.3.3@rev:1
LTS Haskell 24.17:	0.3.5@rev:1
Stackage Nightly 2025-10-30:	0.3.5@rev:1
Latest on Hackage:	0.3.5@rev:1

See all snapshots parallel-io appears in

BSD-3-Clause licensed by Max Bolingbroke, Neil Mitchell, Bulat Ziganshin

Maintained by Max Bolingbroke

This version can be pinned in stack with:parallel-io-0.3.3@sha256:75eeeb51593fa2771c8dbc965ca09d830d62e08135870188a10446f842178bee,3421

Module documentation for 0.3.3

Control
- Control.Concurrent
  - Control.Concurrent.ParallelIO
    - Control.Concurrent.ParallelIO.Global
    - Control.Concurrent.ParallelIO.Local

Depends on 4 packages(full list with versions):

base, containers, extensible-exceptions, random

This package provides combinators for sequencing IO actions onto a thread pool. The thread pool is guaranteed to contain no more unblocked threads than a user-specified upper limit, thus minimizing contention.

Furthermore, the parallel combinators can be used reentrantly - your parallel actions can spawn more parallel actions - without violating this property of the thread pool.

The package is inspired by the thread http://thread.gmane.org/gmane.comp.lang.haskell.cafe/56499/focus=56521. Thanks to Neil Mitchell and Bulat Ziganshin for some of the code this package is based on.