Haskell Core Libraries (base package) Parent Contents Index

System.Posix.Signals Portability non-portable (requires POSIX) Stability provisional Maintainer libraries@haskell.org

Contents

The Signal type Specific signals Sending signals Handling signals Signal sets The process signal mask The alarm timer Waiting for signals

Description

POSIX signal support

Synopsis

type Signal = CInt nullSignal :: Signal internalAbort :: Signal sigABRT :: CInt realTimeAlarm :: Signal sigALRM :: CInt busError :: Signal sigBUS :: CInt processStatusChanged :: Signal sigCHLD :: CInt continueProcess :: Signal sigCONT :: CInt floatingPointException :: Signal sigFPE :: CInt lostConnection :: Signal sigHUP :: CInt illegalInstruction :: Signal sigILL :: CInt keyboardSignal :: Signal sigINT :: CInt killProcess :: Signal sigKILL :: CInt openEndedPipe :: Signal sigPIPE :: CInt keyboardTermination :: Signal sigQUIT :: CInt segmentationViolation :: Signal sigSEGV :: CInt softwareStop :: Signal sigSTOP :: CInt softwareTermination :: Signal sigTERM :: CInt keyboardStop :: Signal sigTSTP :: CInt backgroundRead :: Signal sigTTIN :: CInt backgroundWrite :: Signal sigTTOU :: CInt userDefinedSignal1 :: Signal sigUSR1 :: CInt userDefinedSignal2 :: Signal sigUSR2 :: CInt pollableEvent :: Signal sigPOLL :: CInt profilingTimerExpired :: Signal sigPROF :: CInt badSystemCall :: Signal sigSYS :: CInt breakpointTrap :: Signal sigTRAP :: CInt urgentDataAvailable :: Signal sigURG :: CInt virtualTimerExpired :: Signal sigVTALRM :: CInt cpuTimeLimitExceeded :: Signal sigXCPU :: CInt fileSizeLimitExceeded :: Signal sigXFSZ :: CInt raiseSignal :: Signal -> IO () signalProcess :: Signal -> ProcessID -> IO () signalProcessGroup :: Signal -> ProcessGroupID -> IO () data Handler = Default | Ignore | Catch (IO ()) | CatchOnce (IO ()) installHandler :: Signal -> Handler -> Maybe SignalSet -> IO Handler data SignalSet emptySignalSet :: SignalSet fullSignalSet :: SignalSet addSignal :: Signal -> SignalSet -> SignalSet deleteSignal :: Signal -> SignalSet -> SignalSet inSignalSet :: Signal -> SignalSet -> Bool getSignalMask :: IO SignalSet setSignalMask :: SignalSet -> IO () blockSignals :: SignalSet -> IO () unblockSignals :: SignalSet -> IO () scheduleAlarm :: Int -> IO Int getPendingSignals :: IO SignalSet awaitSignal :: Maybe SignalSet -> IO ()

The Signal type

type Signal = CInt

Specific signals

nullSignal :: Signal

internalAbort :: Signal

sigABRT :: CInt

realTimeAlarm :: Signal

sigALRM :: CInt

busError :: Signal

sigBUS :: CInt

processStatusChanged :: Signal

sigCHLD :: CInt

continueProcess :: Signal

sigCONT :: CInt

floatingPointException :: Signal

sigFPE :: CInt

lostConnection :: Signal

sigHUP :: CInt

illegalInstruction :: Signal

sigILL :: CInt

keyboardSignal :: Signal

sigINT :: CInt

killProcess :: Signal

sigKILL :: CInt

openEndedPipe :: Signal

sigPIPE :: CInt

keyboardTermination :: Signal

sigQUIT :: CInt

segmentationViolation :: Signal

sigSEGV :: CInt

softwareStop :: Signal

sigSTOP :: CInt

softwareTermination :: Signal

sigTERM :: CInt

keyboardStop :: Signal

sigTSTP :: CInt

backgroundRead :: Signal

sigTTIN :: CInt

backgroundWrite :: Signal

sigTTOU :: CInt

userDefinedSignal1 :: Signal

sigUSR1 :: CInt

userDefinedSignal2 :: Signal

sigUSR2 :: CInt

pollableEvent :: Signal

sigPOLL :: CInt

profilingTimerExpired :: Signal

sigPROF :: CInt

badSystemCall :: Signal

sigSYS :: CInt

breakpointTrap :: Signal

sigTRAP :: CInt

urgentDataAvailable :: Signal

sigURG :: CInt

virtualTimerExpired :: Signal

sigVTALRM :: CInt

cpuTimeLimitExceeded :: Signal

sigXCPU :: CInt

fileSizeLimitExceeded :: Signal

sigXFSZ :: CInt

Sending signals

raiseSignal :: Signal -> IO ()

signalProcess :: Signal -> ProcessID -> IO ()

signalProcessGroup :: Signal -> ProcessGroupID -> IO ()

Handling signals

data Handler

Constructors Default Ignore Catch (IO ()) CatchOnce (IO ())

installHandler :: Signal -> Handler -> Maybe SignalSet -> IO Handler

Signal sets

data SignalSet

emptySignalSet :: SignalSet

fullSignalSet :: SignalSet

addSignal :: Signal -> SignalSet -> SignalSet

deleteSignal :: Signal -> SignalSet -> SignalSet

inSignalSet :: Signal -> SignalSet -> Bool

The process signal mask

getSignalMask :: IO SignalSet

setSignalMask :: SignalSet -> IO ()

blockSignals :: SignalSet -> IO ()

unblockSignals :: SignalSet -> IO ()

The alarm timer

scheduleAlarm :: Int -> IO Int

Waiting for signals

getPendingSignals :: IO SignalSet

awaitSignal :: Maybe SignalSet -> IO ()

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