Single DB transaction for all addresses in a message

Cuts disk activity at startup immensely

src/main.cpp

@@ -1899,6 +1899,8 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
             return error("message addr size() = %d", vAddr.size());
 
         // Store the new addresses
+        CAddrDB addrDB;
+        addrDB.TxnBegin();
         int64 nNow = GetAdjustedTime();
         int64 nSince = nNow - 10 * 60;
         BOOST_FOREACH(CAddress& addr, vAddr)
@@ -1910,7 +1912,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
                 continue;
             if (addr.nTime <= 100000000 || addr.nTime > nNow + 10 * 60)
                 addr.nTime = nNow - 5 * 24 * 60 * 60;
-            AddAddress(addr, 2 * 60 * 60);
+            AddAddress(addr, 2 * 60 * 60, &addrDB);
             pfrom->AddAddressKnown(addr);
             if (addr.nTime > nSince && !pfrom->fGetAddr && vAddr.size() <= 10 && addr.IsRoutable())
             {
@@ -1941,6 +1943,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
                 }
             }
         }
+        addrDB.TxnCommit();  // Save addresses (it's ok if this fails)
         if (vAddr.size() < 1000)
             pfrom->fGetAddr = false;
     }

src/net.cpp

@@ -440,7 +440,7 @@ void ThreadGetMyExternalIP(void* parg)
 
 
 
-bool AddAddress(CAddress addr, int64 nTimePenalty)
+bool AddAddress(CAddress addr, int64 nTimePenalty, CAddrDB *pAddrDB)
 {
     if (!addr.IsRoutable())
         return false;
@@ -455,7 +455,10 @@ bool AddAddress(CAddress addr, int64 nTimePenalty)
             // New address
             printf("AddAddress(%s)\n", addr.ToString().c_str());
             mapAddresses.insert(make_pair(addr.GetKey(), addr));
-            CAddrDB().WriteAddress(addr);
+            if (pAddrDB)
+                pAddrDB->WriteAddress(addr);
+            else
+                CAddrDB().WriteAddress(addr);
             return true;
         }
         else
@@ -477,7 +480,12 @@ bool AddAddress(CAddress addr, int64 nTimePenalty)
                 fUpdated = true;
             }
             if (fUpdated)
-                CAddrDB().WriteAddress(addrFound);
+            {
+                if (pAddrDB)
+                    pAddrDB->WriteAddress(addrFound);
+                else
+                    CAddrDB().WriteAddress(addrFound);
+            }
         }
     }
     return false;

src/net.h

@@ -14,6 +14,7 @@
 
 class CMessageHeader;
 class CAddress;
+class CAddrDB;
 class CInv;
 class CRequestTracker;
 class CNode;
@@ -39,7 +40,7 @@ bool ConnectSocket(const CAddress& addrConnect, SOCKET& hSocketRet, int nTimeout
 bool Lookup(const char *pszName, std::vector<CAddress>& vaddr, int nServices, int nMaxSolutions, bool fAllowLookup = false, int portDefault = 0, bool fAllowPort = false);
 bool Lookup(const char *pszName, CAddress& addr, int nServices, bool fAllowLookup = false, int portDefault = 0, bool fAllowPort = false);
 bool GetMyExternalIP(unsigned int& ipRet);
-bool AddAddress(CAddress addr, int64 nTimePenalty=0);
+bool AddAddress(CAddress addr, int64 nTimePenalty=0, CAddrDB *pAddrDB=NULL);
 void AddressCurrentlyConnected(const CAddress& addr);
 CNode* FindNode(unsigned int ip);
 CNode* ConnectNode(CAddress addrConnect, int64 nTimeout=0);