Haskell Hierarchical Libraries (base package)ContentsIndex
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
The NOCLDSTOP flag
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 ()
setStoppedChildFlag :: Bool -> IO Bool
queryStoppedChildFlag :: IO Bool
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 ()
The NOCLDSTOP flag
setStoppedChildFlag :: Bool -> IO Bool
Tells the system whether or not to set the SA_NOCLDSTOP flag when installing new signal handlers.
queryStoppedChildFlag :: IO Bool
Queries the current state of the stopped child flag.
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