Merge pull request #4599

src/init.cpp

@@ -369,6 +369,14 @@ std::string LicenseInfo()
            "\n";
 }
 
+static void BlockNotifyCallback(const uint256& hashNewTip)
+{
+    std::string strCmd = GetArg("-blocknotify", "");
+
+    boost::replace_all(strCmd, "%s", hashNewTip.GetHex());
+    boost::thread t(runCommand, strCmd); // thread runs free
+}
+
 struct CImportingNow
 {
     CImportingNow() {
@@ -1185,6 +1193,9 @@ bool AppInit2(boost::thread_group& threadGroup)
 #endif // !ENABLE_WALLET
     // ********************************************************* Step 9: import blocks
 
+    if (mapArgs.count("-blocknotify"))
+        uiInterface.NotifyBlockTip.connect(BlockNotifyCallback);
+
     // scan for better chains in the block chain database, that are not yet connected in the active best chain
     CValidationState state;
     if (!ActivateBestChain(state))

src/main.cpp

@@ -1387,10 +1387,8 @@ void Misbehaving(NodeId pnode, int howmuch)
 void static InvalidChainFound(CBlockIndex* pindexNew)
 {
     if (!pindexBestInvalid || pindexNew->nChainWork > pindexBestInvalid->nChainWork)
-    {
         pindexBestInvalid = pindexNew;
-        uiInterface.NotifyBlocksChanged();
-    }
+
     LogPrintf("InvalidChainFound: invalid block=%s  height=%d  log2_work=%.8g  date=%s\n",
       pindexNew->GetBlockHash().ToString(), pindexNew->nHeight,
       log(pindexNew->nChainWork.getdouble())/log(2.0), DateTimeStrFormat("%Y-%m-%d %H:%M:%S",
@@ -2151,18 +2149,15 @@ bool ActivateBestChain(CValidationState &state, CBlock *pblock) {
             uint256 hashNewTip = pindexNewTip->GetBlockHash();
             // Relay inventory, but don't relay old inventory during initial block download.
             int nBlockEstimate = Checkpoints::GetTotalBlocksEstimate();
+            {
             LOCK(cs_vNodes);
             BOOST_FOREACH(CNode* pnode, vNodes)
                 if (chainActive.Height() > (pnode->nStartingHeight != -1 ? pnode->nStartingHeight - 2000 : nBlockEstimate))
                     pnode->PushInventory(CInv(MSG_BLOCK, hashNewTip));
-
-            std::string strCmd = GetArg("-blocknotify", "");
-            if (!strCmd.empty()) {
-                boost::replace_all(strCmd, "%s", hashNewTip.GetHex());
-                boost::thread t(runCommand, strCmd); // thread runs free
             }
+
+            uiInterface.NotifyBlockTip(hashNewTip);
         }
-        uiInterface.NotifyBlocksChanged();
     } while(pindexMostWork != chainActive.Tip());
 
     return true;

src/qt/clientmodel.cpp

@@ -209,12 +209,6 @@ static void ShowProgress(ClientModel *clientmodel, const std::string &title, int
                               Q_ARG(int, nProgress));
 }
 
-static void NotifyBlocksChanged(ClientModel *clientmodel)
-{
-    // This notification is too frequent. Don't trigger a signal.
-    // Don't remove it, though, as it might be useful later.
-}
-
 static void NotifyNumConnectionsChanged(ClientModel *clientmodel, int newNumConnections)
 {
     // Too noisy: qDebug() << "NotifyNumConnectionsChanged : " + QString::number(newNumConnections);
@@ -234,7 +228,6 @@ void ClientModel::subscribeToCoreSignals()
 {
     // Connect signals to client
     uiInterface.ShowProgress.connect(boost::bind(ShowProgress, this, _1, _2));
-    uiInterface.NotifyBlocksChanged.connect(boost::bind(NotifyBlocksChanged, this));
     uiInterface.NotifyNumConnectionsChanged.connect(boost::bind(NotifyNumConnectionsChanged, this, _1));
     uiInterface.NotifyAlertChanged.connect(boost::bind(NotifyAlertChanged, this, _1, _2));
 }
@@ -243,7 +236,6 @@ void ClientModel::unsubscribeFromCoreSignals()
 {
     // Disconnect signals from client
     uiInterface.ShowProgress.disconnect(boost::bind(ShowProgress, this, _1, _2));
-    uiInterface.NotifyBlocksChanged.disconnect(boost::bind(NotifyBlocksChanged, this));
     uiInterface.NotifyNumConnectionsChanged.disconnect(boost::bind(NotifyNumConnectionsChanged, this, _1));
     uiInterface.NotifyAlertChanged.disconnect(boost::bind(NotifyAlertChanged, this, _1, _2));
 }

src/ui_interface.h

@@ -78,9 +78,6 @@ public:
     /** Translate a message to the native language of the user. */
     boost::signals2::signal<std::string (const char* psz)> Translate;
 
-    /** Block chain changed. */
-    boost::signals2::signal<void ()> NotifyBlocksChanged;
-
     /** Number of network connections changed. */
     boost::signals2::signal<void (int newNumConnections)> NotifyNumConnectionsChanged;
 
@@ -95,6 +92,9 @@ public:
 
     /** Show progress e.g. for verifychain */
     boost::signals2::signal<void (const std::string &title, int nProgress)> ShowProgress;
+
+    /** New block has been accepted */
+    boost::signals2::signal<void (const uint256& hash)> NotifyBlockTip;
 };
 
 extern CClientUIInterface uiInterface;