Merge pull request #578 from dantudor/Coin-sort

Sort available coins for staking by coin age descending

Author: mxaddict

src/wallet/wallet.cpp

@@ -274,6 +274,10 @@ void CWallet::AvailableCoinsForStaking(vector<COutput>& vCoins, unsigned int nSp
                 }
         }
     }
+
+    if (GetBoolArg("-stakingsortbycoinage",false)) {
+        std::sort(vCoins.begin(), vCoins.end(), sortByCoinAgeDescending());
+    }
 }
 
 // Select some coins without random shuffle or best subset approximation

src/wallet/wallet.h

@@ -513,7 +513,13 @@ class COutput
     std::string ToString() const;
 };
 
-
+struct sortByCoinAgeDescending
+{
+    inline bool operator() (const COutput& cOutput1, const COutput& cOutput2)
+    {
+        return (cOutput1.tx->nTime > cOutput2.tx->nTime);
+    }
+};
 
 
 /** Private key that includes an expiration date in case it never gets used. */