Finalized Checkpointing, see t-eoCheckpointing for a test

eo/src/utils/eoFileMonitor.cpp

@@ -0,0 +1,58 @@
+#include <iostream>
+#include <fstream>
+#include <stdexcept>
+
+#include <utils/eoFileMonitor.h>
+#include <utils/compatibility.h>
+#include <utils/eoParam.h>
+
+using namespace std;
+
+void eoFileMonitor::operator()(void)
+{
+    if (firsttime)
+    {
+        firsttime = false;
+
+        // create file
+        ofstream os(filename.c_str()); 
+
+        if (!os)
+        {
+            string str = "eoFileMonitor: Could not open " + filename;
+            throw runtime_error(str);
+        }
+
+        iterator it = begin();
+
+        os << (*it)->longName();
+
+        ++it;
+
+        for (; it != end(); ++it)
+        {
+            os << ',' << (*it)->longName();
+        }
+    }
+    // ok, now the real saving. append to file
+
+    ofstream os(filename.c_str(), ios_base::app);
+
+    if (!os)
+    {
+        string str = "eoFileMonitor: Could not append to " + filename;
+        throw runtime_error(str);
+    }
+
+    iterator it = begin();
+    
+    os << '\n' << (*it)->getValue();
+
+    for(++it; it != end(); ++it)
+    {
+        os << ',' << (*it)->getValue();
+    }
+
+    // and we're there
+}
+