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name: | ||
slave-thread | ||
version: | ||
1.0.2.3 | ||
synopsis: | ||
A fundamental solution to ghost threads and silent exceptions | ||
description: | ||
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: | ||
. | ||
* When a forked thread dies due to an uncaught exception, | ||
the exception does not get raised in the main thread, | ||
which is why the program continues to run as if nothing happened, | ||
i.e., with the presumption that the already dead thread is running normally. | ||
Naturally this may very well bring your program to a chaotic state. | ||
. | ||
* Another issue is that one thread dying does not | ||
affect any of the threads forked from it. | ||
That's why your program may be accumulating ghost threads. | ||
. | ||
* Ever dealt with your program ignoring the \<Ctrl-C\> strikes? | ||
. | ||
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 master thread. | ||
This protects you from silent exceptions | ||
and lets you be sure of getting informed | ||
if your program gets brought to an erroneous state. | ||
category: | ||
Concurrency, Concurrent, Error Handling, Exceptions, Failure | ||
homepage: | ||
https://github.com/nikita-volkov/slave-thread | ||
bug-reports: | ||
https://github.com/nikita-volkov/slave-thread/issues | ||
author: | ||
Nikita Volkov <nikita.y.volkov@mail.ru> | ||
maintainer: | ||
Nikita Volkov <nikita.y.volkov@mail.ru> | ||
copyright: | ||
(c) 2014, Nikita Volkov | ||
license: | ||
MIT | ||
license-file: | ||
LICENSE | ||
build-type: | ||
Simple | ||
cabal-version: | ||
>=1.10 | ||
|
||
source-repository head | ||
type: | ||
git | ||
location: | ||
git://github.com/nikita-volkov/slave-thread.git | ||
|
||
library | ||
hs-source-dirs: | ||
library | ||
default-extensions: | ||
Arrows, BangPatterns, ConstraintKinds, DataKinds, DefaultSignatures, DeriveDataTypeable, DeriveFoldable, DeriveFunctor, DeriveGeneric, DeriveTraversable, EmptyDataDecls, FlexibleContexts, FlexibleInstances, FunctionalDependencies, GADTs, GeneralizedNewtypeDeriving, LambdaCase, LiberalTypeSynonyms, MagicHash, MultiParamTypeClasses, MultiWayIf, NoImplicitPrelude, NoMonomorphismRestriction, OverloadedStrings, PatternGuards, PatternSynonyms, ParallelListComp, QuasiQuotes, RankNTypes, RecordWildCards, ScopedTypeVariables, StandaloneDeriving, TemplateHaskell, TupleSections, TypeFamilies, TypeOperators, UnboxedTuples | ||
default-language: | ||
Haskell2010 | ||
exposed-modules: | ||
SlaveThread | ||
build-depends: | ||
base >=4.9 && <5, | ||
deferred-folds >=0.9 && <0.10, | ||
foldl >=1 && <2, | ||
mmorph >=1.0.4 && <2, | ||
partial-handler >=1 && <2, | ||
stm-containers >=1.1 && <1.2, | ||
transformers >=0.5 && <0.6 | ||
|
||
test-suite test | ||
type: | ||
exitcode-stdio-1.0 | ||
hs-source-dirs: | ||
test | ||
default-extensions: | ||
Arrows, BangPatterns, ConstraintKinds, DataKinds, DefaultSignatures, DeriveDataTypeable, DeriveFoldable, DeriveFunctor, DeriveGeneric, DeriveTraversable, EmptyDataDecls, FlexibleContexts, FlexibleInstances, FunctionalDependencies, GADTs, GeneralizedNewtypeDeriving, LambdaCase, LiberalTypeSynonyms, MagicHash, MultiParamTypeClasses, MultiWayIf, NoImplicitPrelude, NoMonomorphismRestriction, OverloadedStrings, PatternGuards, PatternSynonyms, ParallelListComp, QuasiQuotes, RankNTypes, RecordWildCards, ScopedTypeVariables, StandaloneDeriving, TemplateHaskell, TupleSections, TypeFamilies, TypeOperators, UnboxedTuples | ||
default-language: | ||
Haskell2010 | ||
ghc-options: | ||
-threaded | ||
"-with-rtsopts=-N" | ||
-funbox-strict-fields | ||
main-is: | ||
Main.hs | ||
build-depends: | ||
HTF ==0.13.*, | ||
QuickCheck >=2.6 && <3, | ||
quickcheck-instances ==0.3.*, | ||
rerebase >=1 && <2, | ||
SafeSemaphore ==0.10.*, | ||
slave-thread |
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