improve error logging with file paths and context

Author: Sahil-u07

concore.hpp

@@ -320,12 +320,9 @@ class Concore{
                     throw 505;
                 }
             }
-            //observed retry count in C++ from various tests is approx 80.
             catch(...){
-                cout<<"Read error";
+                cerr << "Error reading " << inpath << port << "/" << name << " (retry " << retrycount << ")" << endl;
             }
-            
-            
         }
         s += ins;
 
@@ -381,9 +378,8 @@ class Concore{
                     throw 505;
                 }
             }
-            //observed retry count in C++ from various tests is approx 80.
             catch(...){
-                std::cout << "Read error" << std::endl;
+                cerr << "Error reading from shared memory port " << port << " name " << name << " (retry " << retrycount << ")" << endl;
             }
         }
         s += ins;
@@ -458,7 +454,7 @@ class Concore{
             }
 
         catch(...){
-            cout<<"skipping +"<<outpath<<port<<" /"<<name;
+            cerr << "Error writing to " << outpath << port << "/" << name << endl;
         }
     }
 
@@ -483,7 +479,7 @@ class Concore{
             else throw 505;
         }
         catch(...){
-            cout<<"skipping +"<<outpath<<port<<" /"<<name;
+            cerr << "Error writing to " << outpath << port << "/" << name << endl;
         }
     }
 
@@ -513,7 +509,7 @@ class Concore{
             }
 
         catch(...){
-            cout<<"skipping +"<<outpath<<port<<" /"<<name;
+            cerr << "Error writing to shared memory port " << port << " name " << name << endl;
         }
     }
 
@@ -534,7 +530,7 @@ class Concore{
             else throw 505;
         }
         catch(...){
-            cout<<"skipping +"<<outpath<<port<<" /"<<name;
+            cerr << "Error writing to shared memory port " << port << " name " << name << endl;
         }
     }