System.LibCPUID.CPUID

A wrapper around cpu_id_t from https://github.com/anrieff/libcpuid.

Usage:

cpuid >>= \case
 Left err -> error err
 Right CPUID {..} -> do
   mapM_ putStrLn
     [ "Available CPU information"
     , "------------------------------------------"
     , "vendor string: " ++ vendorString
     , "brand string: " ++ brandString
     , "has a time-stamp counter (TSC): " ++  if hasTSC then "yes" else "no"
     , "# physical cores per processor: " ++ show physicalCores
     , "# logical cores per processor: " ++ show logicalCores
     , "# processors: " ++ show (div totalLogicalCores logicalCores)
     ]

CPUID

data CPUID

CPU information and features.

Constructors

CPUID

Fields

• vendorString :: String

  CPU vendor string, e.g. "GenuineIntel".

• brandString :: String

  CPU brand string, e.g. "Intel(R) Core(TM) i5-7500 CPU @ 3.40GHz".

• hasTSC :: Bool

  Is a time-stamp counter available.

• physicalCores :: Int

  Number of physical cores per processor.

• logicalCores :: Int

  Number of logical cores per processor.

• totalLogicalCores :: Int

  Total number of logical cores, which is logicalCores multiplied by the number of processors.

Instances

Storable CPUID

Defined in System.LibCPUID.CPUID

Methods

sizeOf :: CPUID -> Int

alignment :: CPUID -> Int

peekElemOff :: Ptr CPUID -> Int -> IO CPUID

pokeElemOff :: Ptr CPUID -> Int -> CPUID -> IO ()

peekByteOff :: Ptr b -> Int -> IO CPUID

pokeByteOff :: Ptr b -> Int -> CPUID -> IO ()

peek :: Ptr CPUID -> IO CPUID

poke :: Ptr CPUID -> CPUID -> IO ()

cpuid :: IO (Either String CPUID)

Get CPU information and features, or an error message, if the CPU can't be identified by libcpuid.

isCPUIDPresent :: IO Bool

Check if the CPUID instruction is supported.