slave-thread: A solution to ghost threads and silent exceptions

[ concurrency, concurrent, error-handling, exceptions, failure, library, mit ] [ Propose Tags ]

Vanilla thread management in Haskell is low level and it does not approach the problems related to thread deaths. When it's used naively the following typical problems arise:

This library solves all the issues above with a concept of a slave thread. A slave thread has the following properties:

  1. When it dies for whatever reason (exception or finishing normally) it kills all the slave threads that were forked from it. This protects you from ghost threads.

  2. It waits for all slaves to die and execute their finalizers before executing its own finalizer and getting released itself. This gives you hierarchical releasing of resources.

  3. When a slave thread dies with an uncaught exception it reraises it in the parent thread. This protects you from silent exceptions. If your program is brought to an erroneous state you can be sure of getting informed.

Versions 0.1.0, 0.1.1, 0.1.2, 0.1.3, 0.1.4, 0.1.5, 0.1.6,, 1.0.1,, 1.0.2
Dependencies base (>=4.5 && <4.8), base-prelude (>=0.1.3 && <0.2), list-t (>=0.2.4 && <0.3), mmorph (>=1.0.4 && <1.1), partial-handler (>=0.1.0 && <0.2), stm-containers (>=0.2.0 && <0.3), transformers (>=0.3 && <0.5) [details]
License MIT
Copyright (c) 2014, Nikita Volkov
Author Nikita Volkov <>
Maintainer Nikita Volkov <>
Category Concurrency, Concurrent, Error Handling, Exceptions, Failure
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Source repo head: git clone git://
Uploaded by NikitaVolkov at Sun Oct 19 04:21:19 UTC 2014
Distributions LTSHaskell:1.0.2, NixOS:1.0.2, Stackage:1.0.2, openSUSE:1.0.2
Downloads 3876 total (41 in the last 30 days)
Rating 2.0 (votes: 1) [estimated by rule of succession]
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Status Docs uploaded by user
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