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trace-resources | BUG: CentiCpu on Darwin stuck
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‎cabal.project‎

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trace-resources
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trace-forward
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test-cputicks-darwin
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-- Needed when cross compiling
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extra-packages: alex
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‎test-cputicks-darwin/CHANGELOG.md‎

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# Revision history for test-cputicks-darwin
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## 0.1.0.0 -- YYYY-mm-dd
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* First version. Released on an unsuspecting world.

‎test-cputicks-darwin/LICENSE‎

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‎test-cputicks-darwin/app/Main.hs‎

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module Main where
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import Control.Concurrent
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import Control.Monad
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import Cardano.Logging.Resources
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import System.Random (randomRIO)
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main :: IO ()
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main = do
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writeCentiCpuOnChange
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forever $ do
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n <- randomRIO (1000, 10000)
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putStrLn $ show n ++ " isPrime ? " ++ show (isPrime n)
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threadDelay (1000 * 1000)
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-- just burn some CPU cycles
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isPrime :: Int -> Bool
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isPrime x = x `elem` primes x
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where
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isqrt = floor . sqrt . fromIntegral
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primes 2 = [2]
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primes n = 2:[i | i <- [3,5..n], all ((/= 0) . mod i) (primes (isqrt i))]
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writeCentiCpuOnChange :: IO ()
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writeCentiCpuOnChange =
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void $ forkIO $ resourceThread 0
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where
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delayMilliseconds :: Double
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delayMilliseconds = 750
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resourceThread oldVal = do
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threadDelay (round $ delayMilliseconds * 1000)
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maybeStats <- readResourceStats
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case maybeStats of
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Just Resources{rCentiCpu = cputicks}
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| cputicks /= oldVal -> putStrLn ("new CentiCpu: " ++ show cputicks) >> resourceThread cputicks
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_ -> resourceThread oldVal

‎test-cputicks-darwin/test-cputicks-darwin.cabal‎

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cabal-version: 3.0
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name: test-cputicks-darwin
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version: 0.1.0.0
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-- synopsis:
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-- description:
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license: Apache-2.0
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license-file: LICENSE
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author: Michael Karg
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maintainer: [email protected]
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-- copyright:
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category: Testing
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build-type: Simple
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extra-doc-files: CHANGELOG.md
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-- extra-source-files:
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common warnings
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ghc-options: -Wall -Wno-type-defaults
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executable test-cputicks-darwin
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import: warnings
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main-is: Main.hs
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-- other-modules:
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-- other-extensions:
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build-depends: base >=4.18
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, random
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, trace-resources
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ghc-options: -O1
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-threaded
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"-with-rtsopts=-T"
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hs-source-dirs: app
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default-language: Haskell2010

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