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Add withIOCtx #24

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merged 2 commits into from
Dec 11, 2024
Merged

Add withIOCtx #24

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11f3cf8
Add `withIOCtx`
jorisdral Dec 10, 2024
553fbef
Add `index-state` to `cabal.project`
jorisdral Dec 10, 2024
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5 changes: 5 additions & 0 deletions cabal.project
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Original file line number Diff line number Diff line change
@@ -1 +1,6 @@
index-state:
-- Bump this if you need newer packages from Hackage
-- current date: quickcheck-lockstep-0.6.0
, hackage.haskell.org 2024-12-10T00:00:00Z

packages: .
8 changes: 6 additions & 2 deletions src/System/IO/BlockIO.hs
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Expand Up @@ -7,9 +7,10 @@ module System.IO.BlockIO (

-- * I\/O context and initialisation
IOCtx,
initIOCtx,
IOCtxParams(..),
defaultIOCtxParams,
withIOCtx,
initIOCtx,
closeIOCtx,

-- * Performing I\/O
Expand All @@ -34,7 +35,7 @@ import Control.Concurrent.MVar
import Control.Concurrent.QSemN
import Control.Concurrent.Chan
import Control.Exception (mask_, throw, ArrayException(UndefinedElement),
finally, assert, throwIO)
finally, assert, throwIO, bracket)
import System.IO.Error
import GHC.IO.Exception (IOErrorType(ResourceVanished, InvalidArgument))

Expand Down Expand Up @@ -90,6 +91,9 @@ defaultIOCtxParams =
ioctxConcurrencyLimit = 64 * 3
}

withIOCtx :: IOCtxParams -> (IOCtx -> IO a) -> IO a
withIOCtx params = bracket (initIOCtx params) closeIOCtx

initIOCtx :: IOCtxParams -> IO IOCtx
initIOCtx IOCtxParams {ioctxBatchSizeLimit, ioctxConcurrencyLimit} = do
#if MIN_VERSION_base(4,16,0)
Expand Down
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