#3160: No exception safety in Control.Concurrent.QSem QSemN and SampleVar
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Reporter: ChrisKuklewicz | Owner:
Type: bug | Status: new
Priority: normal | Milestone: 7.2.1
Component: libraries/base | Version: 7.0.2
Keywords: | Testcase:
Blockedby: | Difficulty: Unknown
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: None/Unknown
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Changes (by ChrisKuklewicz):
* cc: ChrisKuklewicz (added)
* version: 6.10.2 => 7.0.2
Comment:
I have uploaded [http://hackage.haskell.org/package/SafeSemaphore
SafeSemaphore] to hackage. The MSem and MSemQ there can supersede QSem
and QSemN. The included TestKillSem.hs demonstrates the error in QSem &
QSemN and the fix in MSem & MSemN.
You can browse TestKillSem and its results online at the
[http://haskell.org/haskellwiki/SafeConcurrent#TestKillSem haskell wiki
page].
The API for QSem is improved in MSem to handle negative numbers and is
based on Integer instead of Int.
The API for QSemN is greatly expanded in MSemN.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3160#comment:8>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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