HashFunc.h

Go to the documentation of this file.
00001 //
00002 // Copyright (C) 2006 Institut fuer Telematik, Universitaet Karlsruhe (TH)
00003 //
00004 // This program is free software; you can redistribute it and/or
00005 // modify it under the terms of the GNU General Public License
00006 // as published by the Free Software Foundation; either version 2
00007 // of the License, or (at your option) any later version.
00008 //
00009 // This program is distributed in the hope that it will be useful,
00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012 // GNU General Public License for more details.
00013 //
00014 // You should have received a copy of the GNU General Public License
00015 // along with this program; if not, write to the Free Software
00016 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
00017 //
00018 
00024 #ifndef __HASHFUNC
00025 #define __HASHFUNC
00026 
00027 #include <oversim_mapset.h>
00028 #include <oversim_byteswap.h>
00029 
00030 #include <IPvXAddress.h>
00031 #include <TransportAddress.h>
00032 
00033 #if defined(HAVE_GCC_TR1) || defined(HAVE_MSVC_TR1)
00034 namespace std { namespace tr1 {
00035 #else
00036 namespace __gnu_cxx {
00037 #endif
00038 
00042 template<> struct hash<IPvXAddress> : std::unary_function<IPvXAddress, std::size_t>
00043 {
00050     std::size_t operator()(const IPvXAddress& addr) const
00051     {
00052         if (addr.isIPv6()) {
00053             return bswap_32(addr.get6().words()[0]) ^
00054                    bswap_32(addr.get6().words()[1]) ^
00055                    bswap_32(addr.get6().words()[2]) ^
00056                    bswap_32(addr.get6().words()[3]);
00057         } else {
00058             return bswap_32(addr.get4().getInt());
00059         }
00060     }
00061 };
00062 
00063 
00067 template<> struct hash<TransportAddress> : std::unary_function<TransportAddress, std::size_t>
00068 {
00075     std::size_t operator()(const TransportAddress& addr) const
00076     {
00077         if (addr.getAddress().isIPv6()) {
00078             return ((bswap_32(addr.getAddress().get6().words()[0]) ^
00079                      bswap_32(addr.getAddress().get6().words()[1]) ^
00080                      bswap_32(addr.getAddress().get6().words()[2]) ^
00081                      bswap_32(addr.getAddress().get6().words()[3])) ^
00082                       addr.getPort());
00083         } else {
00084             return (bswap_32(addr.getAddress().get4().getInt()) ^
00085                     addr.getPort());
00086         }
00087     }
00088 };
00089 
00090 }
00091 #if defined(HAVE_GCC_TR1) || defined(HAVE_MSVC_TR1)
00092 }
00093 #endif
00094 
00095 #endif
Generated on Wed May 26 16:21:14 2010 for OverSim by  doxygen 1.6.3