exception.hpp

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/*
---------------------------------------------------------------------------

    This file is part of uHAL.

    uHAL is a hardware access library and programming framework
    originally developed for upgrades of the Level-1 trigger of the CMS
    experiment at CERN.

    uHAL is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    uHAL is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with uHAL.  If not, see <http://www.gnu.org/licenses/>.


      Andrew Rose, Imperial College, London
      email: awr01 <AT> imperial.ac.uk

      Marc Magrans de Abril, CERN
      email: marc.magrans.de.abril <AT> cern.ch

---------------------------------------------------------------------------
*/

#ifndef _uhal_log_exception_hpp_
#define _uhal_log_exception_hpp_

#include <exception>
#include <string>
#include <sys/time.h>

#ifdef USE_BACKTRACE
#include "boost/thread.hpp"
#endif


#define UHAL_DEFINE_DERIVED_EXCEPTION_CLASS( ClassName , BaseClassName, ClassDescription )\
 class ClassName : public BaseClassName {\
 public:\
 ClassName() : BaseClassName() {}\
 void ThrowAsDerivedType_(){ throw ClassName(*this); } \
 exception* clone(){ return new ClassName(*this); } \
 protected:\
 std::string description() const throw() { return std::string( ClassDescription ); } \
};

#define UHAL_DEFINE_EXCEPTION_CLASS( ClassName , ClassDescription ) UHAL_DEFINE_DERIVED_EXCEPTION_CLASS(ClassName, uhal::exception::exception, ClassDescription)

#define ExceptionClass UHAL_DEFINE_EXCEPTION_CLASS




#define ThrowAsDerivedType() ThrowAsDerivedType_(); throw 0;


#ifdef USE_BACKTRACE
#define MaxExceptionHistoryLength 100
#endif

namespace uhal
{

  namespace exception
  {

    class exception : public std::exception
    {
      public:
        exception ();

        exception ( const exception& aExc );

        exception& operator= ( const exception& aExc );

        virtual ~exception() throw();

        virtual const char* what() const throw();

        virtual void ThrowAsDerivedType_() = 0;

        virtual exception* clone() = 0;

        void append ( const char* aCStr ) throw();


      protected:
        virtual std::string description() const throw() = 0;

      private:
#ifdef USE_BACKTRACE

        std::vector< void* > mBacktrace;

        boost::thread::id mThreadId;
#endif
        timeval mTime;

        char* mString;

        char* mAdditionalInfo;
    };

  }
}


#endif