dejafu/dejafu/dejafu.cabal
2017-02-25 01:16:46 +00:00

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-- Initial monad-conc.cabal generated by cabal init. For further
-- documentation, see http://haskell.org/cabal/users-guide/
name: dejafu
version: 0.5.1.0
synopsis: Systematic testing for Haskell concurrency.
description:
/[Déjà Fu is] A martial art in which the user's limbs move in time as well as space, […] It is best described as "the feeling that you have been kicked in the head this way before"/ -- Terry Pratchett, Thief of Time
.
Concurrency is nice, deadlocks and race conditions not so much. The
@Par@ monad family, as defined in
<https://hackage.haskell.org/package/abstract-par/docs/Control-Monad-Par-Class.html abstract-par>
provides deterministic parallelism, but sometimes we can tolerate a
bit of nondeterminism.
.
This package builds on the
<https://hackage.haskell.org/package/concurrency concurrency>
package by enabling you to systematically and deterministically test
your concurrent programs.
.
== Déjà Fu with 'IO':
.
The core assumption underlying Déjà Fu is that any apparent
nondeterminism arises purely from the scheduling behaviour. To put
it another way, a given computation, parametrised with a fixed set
of scheduling decisions, is deterministic.
.
Whilst this assumption may not hold in general when 'IO' is
involved, you should strive to produce test cases where it does.
.
== Memory Model
.
The testing functionality supports a few different memory models,
for computations which use non-synchronised `CRef` operations. The
supported models are:
.
* __Sequential Consistency:__ A program behaves as a simple
interleaving of the actions in different threads. When a CRef is
written to, that write is immediately visible to all threads.
.
* __Total Store Order (TSO):__ Each thread has a write buffer. A
thread sees its writes immediately, but other threads will only
see writes when they are committed, which may happen later. Writes
are committed in the same order that they are created.
.
* __Partial Store Order (PSO):__ Each CRef has a write buffer. A
thread sees its writes immediately, but other threads will only
see writes when they are committed, which may happen later. Writes
to different CRefs are not necessarily committed in the same order
that they are created.
.
If a testing function does not take the memory model as a parameter,
it uses TSO.
.
See the <https://github.com/barrucadu/dejafu README> for more
details.
homepage: https://github.com/barrucadu/dejafu
license: MIT
license-file: LICENSE
author: Michael Walker
maintainer: mike@barrucadu.co.uk
-- copyright:
category: Concurrency
build-type: Simple
-- extra-source-files:
cabal-version: >=1.10
source-repository head
type: git
location: https://github.com/barrucadu/dejafu.git
source-repository this
type: git
location: https://github.com/barrucadu/dejafu.git
tag: dejafu-0.5.1.0
library
exposed-modules: Test.DejaFu
, Test.DejaFu.Conc
, Test.DejaFu.Common
, Test.DejaFu.Schedule
, Test.DejaFu.SCT
, Test.DejaFu.STM
, Test.DejaFu.Conc.Internal
, Test.DejaFu.Conc.Internal.Common
, Test.DejaFu.Conc.Internal.Memory
, Test.DejaFu.Conc.Internal.Threading
, Test.DejaFu.SCT.Internal
, Test.DejaFu.STM.Internal
-- other-modules:
-- other-extensions:
build-depends: base >=4.8 && <5
, concurrency ==1.1.0.*
, containers >=0.5 && <0.6
, deepseq >=1.1 && <2
, exceptions >=0.7 && <0.9
, monad-loops >=0.4 && <0.5
, mtl >=2.2 && <2.3
, random >=1.0 && <1.2
, ref-fd >=0.4 && <0.5
, semigroups >=0.16 && <0.19
, transformers >=0.4 && <0.6
, transformers-base >=0.4 && <0.5
-- hs-source-dirs:
default-language: Haskell2010
ghc-options: -Wall