Haskell Concurrency

A Haskell library that simplifies access to remote data, such as databases or web-based services.

High performance, concurrent functional programming abstractions

Run IO operations asynchronously and wait for their results

Systematic concurrency testing meets Haskell.

Systematic concurrency testing meets Haskell.

The LVish Haskell library

A collection of different packages for CAS based data structures.

A haskell library implementing fast and scalable concurrent queues for x86, with a Chan-like API

Model-view-controller

lifted IO operations from the threads library

Cached and parallel data fetching.

Containers for STM

A structured concurrency library

Concurrent PostgreSQL data consumers

Concurrency for the pipes ecosystem

OTP-like supervision trees in Haskell

STM-based channels for conduits.

A work stealing scheduler

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Interactive-diagrams

The library FDR3 uses for parsing, type checking and evaluating machine CSP.

The library FDR3 uses for parsing, type checking and evaluating machine CSP.

Run lifted IO operations asynchronously and wait for their results

DISCONTINUED. Async combinators

Fork threads and wait for their result

Safe, programmable, speculative evaluation for Haskell

DISCONTINUED. Distributed, stateful, homogeneous microservice framework.

lazy promises

Spawn threads that never die (unless told to do so)

Simple, IO-based Haskell library for Erlang-inspired thread supervisors

Concurrency features for the Haskell machines package

Extra utilities for STM queues

Extra concurrency primitives

A fast globally unique variable supply with a pure API

A principal solution to ghost threads and silent exceptions

File locking

Unbounded thread delays and timeouts

Incubator for my Haskell libraries

STM-specialised Hash Array Mapped Trie

Haskell rate limiter library using lazy token bucket algorithm

Sirkel; a Chord DHT in haskell. Node failure, replication and batteries included!

A fast, cache-efficient, concurrent bloom filter in Haskell

Non-blocking concurrent hashmap for Haskell

A simplified implementation of Erlang/OTP like supervisor for GHC thread

Concurrent and combinable updates

fast unique variables

Simple package that implements timers. Both "one-shot" and "repeating" timers are implemented.

Bounded channels with invalidating readers

Control.Concurrent.Chan split into sending and receiving halves.

Simple thread management

A thread-safe hash table in Haskell

A very simple interface for incremental computation using STM in Haskell.

DISCONTINUED. Loop over an action but throttle it to a certain rate

Unagi-chan channels for io-streams.

A contention-free STM hash map for Haskell

Provides access to GHC's dynamic pointer tag bits

Go-style channels for Haskell (WIP)

Bounded (limited capacity) channels for Haskell

A Haskell library providing an idiomatic implementation of the actor model of concurrency

A monadic interface for async

A utility for concurrent programming in Haskell, insipired by Ticker in golang.

Implicit monadic dataflow parallelism

Can we realize Rust's ownership model as a monad in Haskell?

Generalized sleep and timeout functions

Concurrently + Either

SafeSemaphore is a Haskell library replacing non-exception safe libraries like QSem, QSemN, SampleVar

Allows timeouting a computation while allowing it to return partial results. Useful for making AI-like algorithms that should return the best result found within a time limit.

A tiny Haskell library for concurrent computations

Extra utilities for async

A simple round-robin data type

simple and general quantity semaphores in ghc haskell

Updatable timeouts as a Monad transformer

Minimalistic actor library for Haskell

Limit number of IO actions started per second

Simple and fast implementation of Future

Baisc, Erlang-like message passing for Haskell.

Haskell: Synchronize multiple actions to be triggered as parallel as possible

Periodic timers based on async API.

Throttler between a producer and a consumer function

DISCONTINUED. set a maximum on the number of concurrent actions

A named lock that is created on demand.

utility for collapsing adjacent writes

DISCONTINUED. DEPRECATED - Stream data to and from subprocesses using Pipes

Simple Haskel thread management in hierarchical manner

Thread delay and timeout functions with typed arguments

Haskell: Various concurrent combinators

Build a Queue-Processing Worker Pool using Immortal

Heartbeats for io-streams

Hactor is a rewrite of thespian, a library which aims to provide lightweight Erlang-style actors for Haskell.

Haskell channels with the forwarding primitive

Bundles shared calls to IO functions to perform them only once

Transactional I/O for duplex streams

A simple implementation of a multiple-reader / single-writer locks using STM

A message passing concurrency extensible-effect

Practical actors for Haskell.

A trivial lock based on MVar

Output from parallel subprocesses is an ugly, many-headed beast. Piping though hydra-print provides a NCurses interface to a dynamic set output streams, displayed without interleaving.

*Very* basic erlang-like process support for Haskell

Implementation of skip variables (a special case of skip channels)

Simple concurrency barriers