Sophie: ghc-0:6.10.4-1mdv2010.0 i586

ghc-6.10.4-1mdv2010.0.i586.rpm

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>System.Posix.Signals</TITLE
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>unix-2.3.2.0: POSIX functionality</TD
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><A HREF="index.html"
>Contents</A
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><FONT SIZE="6"
>System.Posix.Signals</FONT
></TD
><TD ALIGN="right"
><TABLE CLASS="narrow" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="infohead"
>Portability</TD
><TD CLASS="infoval"
>non-portable (requires POSIX)</TD
></TR
><TR
><TD CLASS="infohead"
>Stability</TD
><TD CLASS="infoval"
>provisional</TD
></TR
><TR
><TD CLASS="infohead"
>Maintainer</TD
><TD CLASS="infoval"
>libraries@haskell.org</TD
></TR
></TABLE
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
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><TR
><TD
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="section4"
><B
>Contents</B
></TD
></TR
><TR
><TD
><DL
><DT
><A HREF="#1"
>The Signal type
</A
></DT
><DT
><A HREF="#2"
>Specific signals
</A
></DT
><DT
><A HREF="#3"
>Sending signals
</A
></DT
><DT
><A HREF="#4"
>Handling signals
</A
></DT
><DT
><A HREF="#5"
>Signal sets
</A
></DT
><DT
><A HREF="#6"
>The process signal mask
</A
></DT
><DT
><A HREF="#7"
>The alarm timer
</A
></DT
><DT
><A HREF="#8"
>Waiting for signals
</A
></DT
><DT
><A HREF="#9"
>The <TT
>NOCLDSTOP</TT
> flag
</A
></DT
></DL
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
>Description</TD
></TR
><TR
><TD CLASS="doc"
>POSIX signal support
</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
>Synopsis</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="decl"
><SPAN CLASS="keyword"
>type</SPAN
> <A HREF="#t%3ASignal"
>Signal</A
> = <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AnullSignal"
>nullSignal</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AinternalAbort"
>internalAbort</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigABRT"
>sigABRT</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3ArealTimeAlarm"
>realTimeAlarm</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigALRM"
>sigALRM</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AbusError"
>busError</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigBUS"
>sigBUS</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AprocessStatusChanged"
>processStatusChanged</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigCHLD"
>sigCHLD</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AcontinueProcess"
>continueProcess</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigCONT"
>sigCONT</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AfloatingPointException"
>floatingPointException</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigFPE"
>sigFPE</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AlostConnection"
>lostConnection</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigHUP"
>sigHUP</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AillegalInstruction"
>illegalInstruction</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigILL"
>sigILL</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AkeyboardSignal"
>keyboardSignal</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigINT"
>sigINT</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AkillProcess"
>killProcess</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigKILL"
>sigKILL</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AopenEndedPipe"
>openEndedPipe</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigPIPE"
>sigPIPE</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AkeyboardTermination"
>keyboardTermination</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigQUIT"
>sigQUIT</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsegmentationViolation"
>segmentationViolation</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigSEGV"
>sigSEGV</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsoftwareStop"
>softwareStop</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigSTOP"
>sigSTOP</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsoftwareTermination"
>softwareTermination</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigTERM"
>sigTERM</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AkeyboardStop"
>keyboardStop</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigTSTP"
>sigTSTP</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AbackgroundRead"
>backgroundRead</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigTTIN"
>sigTTIN</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AbackgroundWrite"
>backgroundWrite</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigTTOU"
>sigTTOU</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AuserDefinedSignal1"
>userDefinedSignal1</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigUSR1"
>sigUSR1</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AuserDefinedSignal2"
>userDefinedSignal2</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigUSR2"
>sigUSR2</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3ApollableEvent"
>pollableEvent</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigPOLL"
>sigPOLL</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AprofilingTimerExpired"
>profilingTimerExpired</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigPROF"
>sigPROF</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AbadSystemCall"
>badSystemCall</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigSYS"
>sigSYS</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AbreakpointTrap"
>breakpointTrap</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigTRAP"
>sigTRAP</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AurgentDataAvailable"
>urgentDataAvailable</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigURG"
>sigURG</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AvirtualTimerExpired"
>virtualTimerExpired</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigVTALRM"
>sigVTALRM</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AcpuTimeLimitExceeded"
>cpuTimeLimitExceeded</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigXCPU"
>sigXCPU</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AfileSizeLimitExceeded"
>fileSizeLimitExceeded</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsigXFSZ"
>sigXFSZ</A
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AraiseSignal"
>raiseSignal</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsignalProcess"
>signalProcess</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
> -&gt; <A HREF="../base/System-Posix-Types.html#t%3AProcessID"
>ProcessID</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsignalProcessGroup"
>signalProcessGroup</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
> -&gt; <A HREF="../base/System-Posix-Types.html#t%3AProcessGroupID"
>ProcessGroupID</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="decl"
><SPAN CLASS="keyword"
>data</SPAN
>  <A HREF="#t%3AHandler"
>Handler</A
>  </TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="decl"
>= <A HREF="#v%3ADefault"
>Default</A
></TD
></TR
><TR
><TD CLASS="decl"
>| <A HREF="#v%3AIgnore"
>Ignore</A
></TD
></TR
><TR
><TD CLASS="decl"
>| <A HREF="#v%3ACatch"
>Catch</A
> (<A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
>)</TD
></TR
><TR
><TD CLASS="decl"
>| <A HREF="#v%3ACatchOnce"
>CatchOnce</A
> (<A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
>)</TD
></TR
></TABLE
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AinstallHandler"
>installHandler</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
> -&gt; <A HREF="System-Posix-Signals.html#t%3AHandler"
>Handler</A
> -&gt; <A HREF="../base/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="System-Posix-Signals.html#t%3AHandler"
>Handler</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><SPAN CLASS="keyword"
>data</SPAN
>  <A HREF="#t%3ASignalSet"
>SignalSet</A
> </TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AemptySignalSet"
>emptySignalSet</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AfullSignalSet"
>fullSignalSet</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AaddSignal"
>addSignal</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
> -&gt; <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
> -&gt; <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AdeleteSignal"
>deleteSignal</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
> -&gt; <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
> -&gt; <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AinSignalSet"
>inSignalSet</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
> -&gt; <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
> -&gt; <A HREF="../ghc-prim/GHC-Bool.html#t%3ABool"
>Bool</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AgetSignalMask"
>getSignalMask</A
> :: <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsetSignalMask"
>setSignalMask</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AblockSignals"
>blockSignals</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AunblockSignals"
>unblockSignals</A
> :: <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AscheduleAlarm"
>scheduleAlarm</A
> :: <A HREF="../ghc-prim/GHC-Types.html#t%3AInt"
>Int</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Types.html#t%3AInt"
>Int</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AgetPendingSignals"
>getPendingSignals</A
> :: <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AawaitSignal"
>awaitSignal</A
> :: <A HREF="../base/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsetStoppedChildFlag"
>setStoppedChildFlag</A
> :: <A HREF="../ghc-prim/GHC-Bool.html#t%3ABool"
>Bool</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Bool.html#t%3ABool"
>Bool</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AqueryStoppedChildFlag"
>queryStoppedChildFlag</A
> :: <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Bool.html#t%3ABool"
>Bool</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="1"
><A NAME="1"
>The Signal type
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><SPAN CLASS="keyword"
>type</SPAN
> <A NAME="t:Signal"
><A NAME="t%3ASignal"
></A
></A
><B
>Signal</B
> = <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="2"
><A NAME="2"
>Specific signals
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:nullSignal"
><A NAME="v%3AnullSignal"
></A
></A
><B
>nullSignal</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:internalAbort"
><A NAME="v%3AinternalAbort"
></A
></A
><B
>internalAbort</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigABRT"
><A NAME="v%3AsigABRT"
></A
></A
><B
>sigABRT</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:realTimeAlarm"
><A NAME="v%3ArealTimeAlarm"
></A
></A
><B
>realTimeAlarm</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigALRM"
><A NAME="v%3AsigALRM"
></A
></A
><B
>sigALRM</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:busError"
><A NAME="v%3AbusError"
></A
></A
><B
>busError</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigBUS"
><A NAME="v%3AsigBUS"
></A
></A
><B
>sigBUS</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:processStatusChanged"
><A NAME="v%3AprocessStatusChanged"
></A
></A
><B
>processStatusChanged</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigCHLD"
><A NAME="v%3AsigCHLD"
></A
></A
><B
>sigCHLD</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:continueProcess"
><A NAME="v%3AcontinueProcess"
></A
></A
><B
>continueProcess</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigCONT"
><A NAME="v%3AsigCONT"
></A
></A
><B
>sigCONT</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:floatingPointException"
><A NAME="v%3AfloatingPointException"
></A
></A
><B
>floatingPointException</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigFPE"
><A NAME="v%3AsigFPE"
></A
></A
><B
>sigFPE</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:lostConnection"
><A NAME="v%3AlostConnection"
></A
></A
><B
>lostConnection</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigHUP"
><A NAME="v%3AsigHUP"
></A
></A
><B
>sigHUP</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:illegalInstruction"
><A NAME="v%3AillegalInstruction"
></A
></A
><B
>illegalInstruction</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigILL"
><A NAME="v%3AsigILL"
></A
></A
><B
>sigILL</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:keyboardSignal"
><A NAME="v%3AkeyboardSignal"
></A
></A
><B
>keyboardSignal</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigINT"
><A NAME="v%3AsigINT"
></A
></A
><B
>sigINT</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:killProcess"
><A NAME="v%3AkillProcess"
></A
></A
><B
>killProcess</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigKILL"
><A NAME="v%3AsigKILL"
></A
></A
><B
>sigKILL</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:openEndedPipe"
><A NAME="v%3AopenEndedPipe"
></A
></A
><B
>openEndedPipe</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigPIPE"
><A NAME="v%3AsigPIPE"
></A
></A
><B
>sigPIPE</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:keyboardTermination"
><A NAME="v%3AkeyboardTermination"
></A
></A
><B
>keyboardTermination</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigQUIT"
><A NAME="v%3AsigQUIT"
></A
></A
><B
>sigQUIT</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:segmentationViolation"
><A NAME="v%3AsegmentationViolation"
></A
></A
><B
>segmentationViolation</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigSEGV"
><A NAME="v%3AsigSEGV"
></A
></A
><B
>sigSEGV</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:softwareStop"
><A NAME="v%3AsoftwareStop"
></A
></A
><B
>softwareStop</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigSTOP"
><A NAME="v%3AsigSTOP"
></A
></A
><B
>sigSTOP</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:softwareTermination"
><A NAME="v%3AsoftwareTermination"
></A
></A
><B
>softwareTermination</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigTERM"
><A NAME="v%3AsigTERM"
></A
></A
><B
>sigTERM</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:keyboardStop"
><A NAME="v%3AkeyboardStop"
></A
></A
><B
>keyboardStop</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigTSTP"
><A NAME="v%3AsigTSTP"
></A
></A
><B
>sigTSTP</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:backgroundRead"
><A NAME="v%3AbackgroundRead"
></A
></A
><B
>backgroundRead</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigTTIN"
><A NAME="v%3AsigTTIN"
></A
></A
><B
>sigTTIN</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:backgroundWrite"
><A NAME="v%3AbackgroundWrite"
></A
></A
><B
>backgroundWrite</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigTTOU"
><A NAME="v%3AsigTTOU"
></A
></A
><B
>sigTTOU</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:userDefinedSignal1"
><A NAME="v%3AuserDefinedSignal1"
></A
></A
><B
>userDefinedSignal1</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigUSR1"
><A NAME="v%3AsigUSR1"
></A
></A
><B
>sigUSR1</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:userDefinedSignal2"
><A NAME="v%3AuserDefinedSignal2"
></A
></A
><B
>userDefinedSignal2</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigUSR2"
><A NAME="v%3AsigUSR2"
></A
></A
><B
>sigUSR2</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:pollableEvent"
><A NAME="v%3ApollableEvent"
></A
></A
><B
>pollableEvent</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigPOLL"
><A NAME="v%3AsigPOLL"
></A
></A
><B
>sigPOLL</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:profilingTimerExpired"
><A NAME="v%3AprofilingTimerExpired"
></A
></A
><B
>profilingTimerExpired</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigPROF"
><A NAME="v%3AsigPROF"
></A
></A
><B
>sigPROF</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:badSystemCall"
><A NAME="v%3AbadSystemCall"
></A
></A
><B
>badSystemCall</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigSYS"
><A NAME="v%3AsigSYS"
></A
></A
><B
>sigSYS</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:breakpointTrap"
><A NAME="v%3AbreakpointTrap"
></A
></A
><B
>breakpointTrap</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigTRAP"
><A NAME="v%3AsigTRAP"
></A
></A
><B
>sigTRAP</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:urgentDataAvailable"
><A NAME="v%3AurgentDataAvailable"
></A
></A
><B
>urgentDataAvailable</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigURG"
><A NAME="v%3AsigURG"
></A
></A
><B
>sigURG</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:virtualTimerExpired"
><A NAME="v%3AvirtualTimerExpired"
></A
></A
><B
>virtualTimerExpired</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigVTALRM"
><A NAME="v%3AsigVTALRM"
></A
></A
><B
>sigVTALRM</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:cpuTimeLimitExceeded"
><A NAME="v%3AcpuTimeLimitExceeded"
></A
></A
><B
>cpuTimeLimitExceeded</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigXCPU"
><A NAME="v%3AsigXCPU"
></A
></A
><B
>sigXCPU</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:fileSizeLimitExceeded"
><A NAME="v%3AfileSizeLimitExceeded"
></A
></A
><B
>fileSizeLimitExceeded</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:sigXFSZ"
><A NAME="v%3AsigXFSZ"
></A
></A
><B
>sigXFSZ</B
> :: <A HREF="../base/Foreign-C-Types.html#t%3ACInt"
>CInt</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="3"
><A NAME="3"
>Sending signals
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:raiseSignal"
><A NAME="v%3AraiseSignal"
></A
></A
><B
>raiseSignal</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="doc"
><TT
>raiseSignal int</TT
> calls <TT
>kill</TT
> to signal the current process
   with interrupt signal <TT
>int</TT
>. 
</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:signalProcess"
><A NAME="v%3AsignalProcess"
></A
></A
><B
>signalProcess</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
> -&gt; <A HREF="../base/System-Posix-Types.html#t%3AProcessID"
>ProcessID</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="doc"
><TT
>signalProcess int pid</TT
> calls <TT
>kill</TT
> to signal process <TT
>pid</TT
> 
   with interrupt signal <TT
>int</TT
>.
</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:signalProcessGroup"
><A NAME="v%3AsignalProcessGroup"
></A
></A
><B
>signalProcessGroup</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
> -&gt; <A HREF="../base/System-Posix-Types.html#t%3AProcessGroupID"
>ProcessGroupID</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="doc"
><TT
>signalProcessGroup int pgid</TT
> calls <TT
>kill</TT
> to signal 
  all processes in group <TT
>pgid</TT
> with interrupt signal <TT
>int</TT
>.
</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="4"
><A NAME="4"
>Handling signals
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><SPAN CLASS="keyword"
>data</SPAN
>  <A NAME="t:Handler"
><A NAME="t%3AHandler"
></A
></A
><B
>Handler</B
>  </TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="ndoc"
>The actions to perform when a signal is received.
</TD
></TR
><TR
><TD CLASS="section4"
>Constructors</TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="1" CELLPADDING="0"
><TR
><TD CLASS="arg"
><A NAME="v:Default"
><A NAME="v%3ADefault"
></A
></A
><B
>Default</B
></TD
><TD CLASS="rdoc"
></TD
></TR
><TR
><TD CLASS="arg"
><A NAME="v:Ignore"
><A NAME="v%3AIgnore"
></A
></A
><B
>Ignore</B
></TD
><TD CLASS="rdoc"
></TD
></TR
><TR
><TD CLASS="arg"
><A NAME="v:Catch"
><A NAME="v%3ACatch"
></A
></A
><B
>Catch</B
> (<A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
>)</TD
><TD CLASS="rdoc"
></TD
></TR
><TR
><TD CLASS="arg"
><A NAME="v:CatchOnce"
><A NAME="v%3ACatchOnce"
></A
></A
><B
>CatchOnce</B
> (<A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
>)</TD
><TD CLASS="rdoc"
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="section4"
><IMG SRC="minus.gif" CLASS="coll" ONCLICK="toggle(this,'i:Handler')" ALT="show/hide"
> Instances</TD
></TR
><TR
><TD CLASS="body"
><DIV ID="i:Handler" STYLE="display:block;"
><TABLE CLASS="vanilla" CELLSPACING="1" CELLPADDING="0"
><TR
><TD CLASS="decl"
><A HREF="../base/Data-Typeable.html#t%3ATypeable"
>Typeable</A
> <A HREF="System-Posix-Signals.html#t%3AHandler"
>Handler</A
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:installHandler"
><A NAME="v%3AinstallHandler"
></A
></A
><B
>installHandler</B
></TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="arg"
>:: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
></TD
><TD CLASS="rdoc"
></TD
></TR
><TR
><TD CLASS="arg"
>-&gt; <A HREF="System-Posix-Signals.html#t%3AHandler"
>Handler</A
></TD
><TD CLASS="rdoc"
></TD
></TR
><TR
><TD CLASS="arg"
>-&gt; <A HREF="../base/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
></TD
><TD CLASS="rdoc"
>other signals to block
</TD
></TR
><TR
><TD CLASS="arg"
>-&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="System-Posix-Signals.html#t%3AHandler"
>Handler</A
></TD
><TD CLASS="rdoc"
>old handler
</TD
></TR
><TR
><TD CLASS="ndoc" COLSPAN="2"
><TT
>installHandler int handler iset</TT
> calls <TT
>sigaction</TT
> to install an
   interrupt handler for signal <TT
>int</TT
>.  If <TT
>handler</TT
> is <TT
>Default</TT
>,
   <TT
>SIG_DFL</TT
> is installed; if <TT
>handler</TT
> is <TT
>Ignore</TT
>, <TT
>SIG_IGN</TT
> is
   installed; if <TT
>handler</TT
> is <TT
>Catch action</TT
>, a handler is installed
   which will invoke <TT
>action</TT
> in a new thread when (or shortly after) the
   signal is received.
   If <TT
>iset</TT
> is <TT
>Just s</TT
>, then the <TT
>sa_mask</TT
> of the <TT
>sigaction</TT
> structure
   is set to <TT
>s</TT
>; otherwise it is cleared.  The previously installed
   signal handler for <TT
>int</TT
> is returned
</TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="5"
><A NAME="5"
>Signal sets
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><SPAN CLASS="keyword"
>data</SPAN
>  <A NAME="t:SignalSet"
><A NAME="t%3ASignalSet"
></A
></A
><B
>SignalSet</B
>  </TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:emptySignalSet"
><A NAME="v%3AemptySignalSet"
></A
></A
><B
>emptySignalSet</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:fullSignalSet"
><A NAME="v%3AfullSignalSet"
></A
></A
><B
>fullSignalSet</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:addSignal"
><A NAME="v%3AaddSignal"
></A
></A
><B
>addSignal</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
> -&gt; <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
> -&gt; <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:deleteSignal"
><A NAME="v%3AdeleteSignal"
></A
></A
><B
>deleteSignal</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
> -&gt; <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
> -&gt; <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:inSignalSet"
><A NAME="v%3AinSignalSet"
></A
></A
><B
>inSignalSet</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignal"
>Signal</A
> -&gt; <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
> -&gt; <A HREF="../ghc-prim/GHC-Bool.html#t%3ABool"
>Bool</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="6"
><A NAME="6"
>The process signal mask
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:getSignalMask"
><A NAME="v%3AgetSignalMask"
></A
></A
><B
>getSignalMask</B
> :: <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
></TD
></TR
><TR
><TD CLASS="doc"
><TT
>getSignalMask</TT
> calls <TT
>sigprocmask</TT
> to determine the
   set of interrupts which are currently being blocked.
</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:setSignalMask"
><A NAME="v%3AsetSignalMask"
></A
></A
><B
>setSignalMask</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="doc"
><TT
>setSignalMask mask</TT
> calls <TT
>sigprocmask</TT
> with
   <TT
>SIG_SETMASK</TT
> to block all interrupts in <TT
>mask</TT
>.
</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:blockSignals"
><A NAME="v%3AblockSignals"
></A
></A
><B
>blockSignals</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="doc"
><TT
>blockSignals mask</TT
> calls <TT
>sigprocmask</TT
> with
   <TT
>SIG_BLOCK</TT
> to add all interrupts in <TT
>mask</TT
> to the
  set of blocked interrupts.
</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:unblockSignals"
><A NAME="v%3AunblockSignals"
></A
></A
><B
>unblockSignals</B
> :: <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="doc"
><TT
>unblockSignals mask</TT
> calls <TT
>sigprocmask</TT
> with
   <TT
>SIG_UNBLOCK</TT
> to remove all interrupts in <TT
>mask</TT
> from the
   set of blocked interrupts. 
</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="7"
><A NAME="7"
>The alarm timer
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:scheduleAlarm"
><A NAME="v%3AscheduleAlarm"
></A
></A
><B
>scheduleAlarm</B
> :: <A HREF="../ghc-prim/GHC-Types.html#t%3AInt"
>Int</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Types.html#t%3AInt"
>Int</A
></TD
></TR
><TR
><TD CLASS="doc"
><TT
>scheduleAlarm i</TT
> calls <TT
>alarm</TT
> to schedule a real time
   alarm at least <TT
>i</TT
> seconds in the future.
</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="8"
><A NAME="8"
>Waiting for signals
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:getPendingSignals"
><A NAME="v%3AgetPendingSignals"
></A
></A
><B
>getPendingSignals</B
> :: <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
></TD
></TR
><TR
><TD CLASS="doc"
><TT
>getPendingSignals</TT
> calls <TT
>sigpending</TT
> to obtain
   the set of interrupts which have been received but are currently blocked.
</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:awaitSignal"
><A NAME="v%3AawaitSignal"
></A
></A
><B
>awaitSignal</B
> :: <A HREF="../base/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> <A HREF="System-Posix-Signals.html#t%3ASignalSet"
>SignalSet</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="doc"
><TT
>awaitSignal iset</TT
> suspends execution until an interrupt is received.
 If <TT
>iset</TT
> is <TT
>Just s</TT
>, <TT
>awaitSignal</TT
> calls <TT
>sigsuspend</TT
>, installing
 <TT
>s</TT
> as the new signal mask before suspending execution; otherwise, it
 calls <TT
>pause</TT
>.  <TT
>awaitSignal</TT
> returns on receipt of a signal.  If you
 have installed any signal handlers with <TT
>installHandler</TT
>, it may be
 wise to call <TT
>yield</TT
> directly after <TT
>awaitSignal</TT
> to ensure that the
 signal handler runs as promptly as possible.
</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="9"
><A NAME="9"
>The <TT
>NOCLDSTOP</TT
> flag
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:setStoppedChildFlag"
><A NAME="v%3AsetStoppedChildFlag"
></A
></A
><B
>setStoppedChildFlag</B
> :: <A HREF="../ghc-prim/GHC-Bool.html#t%3ABool"
>Bool</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Bool.html#t%3ABool"
>Bool</A
></TD
></TR
><TR
><TD CLASS="doc"
>Tells the system whether or not to set the <TT
>SA_NOCLDSTOP</TT
> flag when
 installing new signal handlers.
</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:queryStoppedChildFlag"
><A NAME="v%3AqueryStoppedChildFlag"
></A
></A
><B
>queryStoppedChildFlag</B
> :: <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Bool.html#t%3ABool"
>Bool</A
></TD
></TR
><TR
><TD CLASS="doc"
>Queries the current state of the stopped child flag.
</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="botbar"
>Produced by <A HREF="http://www.haskell.org/haddock/"
>Haddock</A
> version 2.4.2</TD
></TR
></TABLE
></BODY
></HTML
>