Added the eoTimeCounter that allows to use time as a base counter

for statistics (when you compare things that are not using the same
evaluation function for instance)

eo/src/utils/checkpointing

@@ -14,6 +14,7 @@
 #include <utils/eoFDCStat.h>
 #include <utils/eoMOFitnessStat.h>
 #include <utils/eoPopStat.h>
+#include <utils/eoTimeCounter.h>
 
 // and make_help - any better suggestion to include it?
 void make_help(eoParser & _parser);

eo/src/utils/eoTimeCounter.h

@@ -0,0 +1,65 @@
+// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
+
+//-----------------------------------------------------------------------------
+// eoTimeCounter.h
+// (c) Marc Schoenauer, Maarten Keijzer, and GeNeura Team, 2002
+/* 
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library 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
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+    Contact: todos@geneura.ugr.es, http://geneura.ugr.es
+             Marc.Schoenauer@inria.fr
+             mkeijzer@dhi.dk
+ */
+//-----------------------------------------------------------------------------
+
+#ifndef _eoTimeCounter_h
+#define _eoTimeCounter_h
+
+#include <sys/times.h>
+#include <utils/eoStat.h>
+
+
+/**
+    An eoStat that simply gives the user time since first generation
+    It has to be tempatized by EOT because it must be an eoStat
+*/
+class eoTimeCounter : public eoUpdater, public eoValueParam<double>
+{
+public:
+  eoTimeCounter() : eoValueParam<double>(0.0, "Time") // : firstTime(true)  
+  {}
+
+  /** simply stores the time spent in process in its value() */    
+  virtual void operator()()
+  {
+    // ask for system time
+    times(&tmsStruct);
+//     if (firstTime)	/* first generation */
+//       {
+// 	firstTime=false;
+// 	firstUtime = tmsStruct.tms_utime;
+//       }
+    // store elapsed user time
+//     value(tmsStruct.tms_utime - firstUtime);
+    value()=double(tmsStruct.tms_utime)/100;
+  }
+  
+private:
+//   bool firstTime;
+//   clock_t firstUtime;
+  struct tms tmsStruct;	// stores time
+};
+
+#endif