Equalizer  1.4.1
co/exception.h
00001 
00002 /* Copyright (c) 2011, Cedric Stalder <cedric.stalder@gmail.com>
00003  *               2012, Stefan.Eilemann@epfl.ch
00004  *
00005  * This library is free software; you can redistribute it and/or modify it under
00006  * the terms of the GNU Lesser General Public License version 2.1 as published
00007  * by the Free Software Foundation.
00008  *
00009  * This library is distributed in the hope that it will be useful, but WITHOUT
00010  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
00011  * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
00012  * details.
00013  *
00014  * You should have received a copy of the GNU Lesser General Public License
00015  * along with this library; if not, write to the Free Software Foundation, Inc.,
00016  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
00017  */
00018 
00019 #ifndef CO_EXCEPTION_H
00020 #define CO_EXCEPTION_H
00021 #include <sstream>
00022 
00023 namespace co
00024 {
00025     class Exception;
00026     std::ostream& operator << ( std::ostream& os, const Exception& e );
00027 
00029     class Exception : public std::exception
00030     {
00031     public:
00032         enum Type
00033         {
00034             TIMEOUT_WRITE,   
00035             TIMEOUT_READ,    
00036             TIMEOUT_BARRIER, 
00037             TIMEOUT_COMMANDQUEUE, 
00038             CUSTOM      = 20 // leave some room
00039         };
00040 
00042         Exception( const uint32_t type ) : _type( type ) {}
00043 
00045         virtual ~Exception() throw() {}
00046 
00048         virtual uint32_t getType() const { return _type; }
00049 
00050         virtual const char* what() const throw()
00051         {
00052             std::stringstream os;
00053             os << *this;
00054             return os.str().c_str();
00055         }
00056 
00057     private:
00059         const uint32_t _type;
00060     };
00061 
00062     inline std::ostream& operator << ( std::ostream& os, const Exception& e )
00063     {
00064         switch( e.getType() )
00065         {
00066           case Exception::TIMEOUT_WRITE:
00067               return os << " Timeout on write operation";
00068           case Exception::TIMEOUT_READ:
00069               return os << " Timeout on read operation";
00070           case Exception::TIMEOUT_BARRIER:
00071               return os << " Timeout on barrier";
00072           case Exception::TIMEOUT_COMMANDQUEUE:
00073               return os << " Timeout on command queue";
00074           default:
00075               return os << " Unknown Exception";
00076         }
00077     }
00078 }
00079 
00080 #endif // CO_EXCEPTION_H
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