OpenWalnut  1.2.5
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WSegmentationFault.h
00001 //---------------------------------------------------------------------------
00002 //
00003 // Project: OpenWalnut ( http://www.openwalnut.org )
00004 //
00005 // Copyright 2009 OpenWalnut Community, BSV@Uni-Leipzig and CNCF@MPI-CBS
00006 // For more information see http://www.openwalnut.org/copying
00007 //
00008 // This file is part of OpenWalnut.
00009 //
00010 // OpenWalnut is free software: you can redistribute it and/or modify
00011 // it under the terms of the GNU Lesser General Public License as published by
00012 // the Free Software Foundation, either version 3 of the License, or
00013 // (at your option) any later version.
00014 //
00015 // OpenWalnut is distributed in the hope that it will be useful,
00016 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00018 // GNU Lesser General Public License for more details.
00019 //
00020 // You should have received a copy of the GNU Lesser General Public License
00021 // along with OpenWalnut. If not, see <http://www.gnu.org/licenses/>.
00022 //
00023 //---------------------------------------------------------------------------
00024 
00025 #ifndef WSEGMENTATIONFAULT_H
00026 #define WSEGMENTATIONFAULT_H
00027 
00028 #ifdef __linux__
00029 // This is highly platform dependent. Used for backtrace functionality.
00030 #include <signal.h>
00031 #endif  // __linux__
00032 
00033 #include <string>
00034 
00035 #include <boost/lexical_cast.hpp>
00036 
00037 #include "WException.h"
00038 #include "WExportCommon.h"
00039 
00040 #ifdef __linux__
00041 // This is highly platform dependent. Used for backtrace functionality.
00042 
00043 /**
00044  * Template class for every signal which can be handled.
00045  */
00046 template <class SignalExceptionClass> class SignalTranslator
00047 {
00048 public:
00049     SignalTranslator()
00050     {
00051         static SingletonTranslator s_objTranslator;
00052     }
00053 
00054 protected:
00055 
00056 private:
00057     class SingletonTranslator
00058     {
00059     public:  // NOLINT
00060         SingletonTranslator()
00061         {
00062             signal( SignalExceptionClass::getSignalNumber(), SignalHandler );
00063         }
00064 
00065         static void SignalHandler( int signum )
00066         {
00067             throw SignalExceptionClass( std::string( "SIGNAL: " ) +
00068                                         boost::lexical_cast<std::string>( signum ) );
00069         }
00070     };
00071 };
00072 #endif  // __linux__
00073 
00074 /**
00075  * Base exception class for handling segmentation faults.
00076  * It throws segmentation faults as exceptions. Please remember that SIGSEGV is not
00077  * recoverable, which means it can NOT be catched!
00078  * Also note that this will only work on Linux.
00079  */
00080 class OWCOMMON_EXPORT WSegmentationFault: public WException
00081 {
00082 public:
00083 
00084     /**
00085      * Default constructor.
00086      * \param msg name of the exception. mostly the default "Segmentation Fault"
00087      */
00088     explicit WSegmentationFault( const std::string& msg = "Segmentation Fault" );
00089 
00090     /**
00091      * Destructor.
00092      */
00093     virtual ~WSegmentationFault() throw();
00094 
00095     /**
00096      * Defines signal type to handle.
00097      * @return The signal number.
00098      */
00099     static int getSignalNumber() throw();
00100 
00101     /**
00102      * Installs this exception as signal handler for SIGSEGV.
00103      * This will just work on Linux.
00104      */
00105     static void installSignalHandler() throw();
00106 
00107 protected:
00108 
00109 private:
00110 };
00111 
00112 #endif  // WSEGMENTATIONFAULT_H
00113 
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