Add CValidationInterface::BlockChecked notification

src/main.cpp

@@ -152,6 +152,8 @@ struct CMainSignals {
     boost::signals2::signal<void (const uint256 &)> Inventory;
     // Tells listeners to broadcast their data.
     boost::signals2::signal<void ()> Broadcast;
+    // Notifies listeners of a block validation result
+    boost::signals2::signal<void (const CBlock&, const CValidationState&)> BlockChecked;
 } g_signals;
 
 } // anon namespace
@@ -163,9 +165,11 @@ void RegisterValidationInterface(CValidationInterface* pwalletIn) {
     g_signals.SetBestChain.connect(boost::bind(&CValidationInterface::SetBestChain, pwalletIn, _1));
     g_signals.Inventory.connect(boost::bind(&CValidationInterface::Inventory, pwalletIn, _1));
     g_signals.Broadcast.connect(boost::bind(&CValidationInterface::ResendWalletTransactions, pwalletIn));
+    g_signals.BlockChecked.connect(boost::bind(&CValidationInterface::BlockChecked, pwalletIn, _1, _2));
 }
 
 void UnregisterValidationInterface(CValidationInterface* pwalletIn) {
+    g_signals.BlockChecked.disconnect(boost::bind(&CValidationInterface::BlockChecked, pwalletIn, _1, _2));
     g_signals.Broadcast.disconnect(boost::bind(&CValidationInterface::ResendWalletTransactions, pwalletIn));
     g_signals.Inventory.disconnect(boost::bind(&CValidationInterface::Inventory, pwalletIn, _1));
     g_signals.SetBestChain.disconnect(boost::bind(&CValidationInterface::SetBestChain, pwalletIn, _1));
@@ -175,6 +179,7 @@ void UnregisterValidationInterface(CValidationInterface* pwalletIn) {
 }
 
 void UnregisterAllValidationInterfaces() {
+    g_signals.BlockChecked.disconnect_all_slots();
     g_signals.Broadcast.disconnect_all_slots();
     g_signals.Inventory.disconnect_all_slots();
     g_signals.SetBestChain.disconnect_all_slots();
@@ -1868,7 +1873,9 @@ bool static ConnectTip(CValidationState &state, CBlockIndex *pindexNew, CBlock *
     {
         CCoinsViewCache view(pcoinsTip);
         CInv inv(MSG_BLOCK, pindexNew->GetBlockHash());
-        if (!ConnectBlock(*pblock, state, pindexNew, view)) {
+        bool rv = ConnectBlock(*pblock, state, pindexNew, view);
+        g_signals.BlockChecked(*pblock, state);
+        if (!rv) {
             if (state.IsInvalid())
                 InvalidBlockFound(pindexNew, state);
             return error("ConnectTip() : ConnectBlock %s failed", pindexNew->GetBlockHash().ToString());

src/main.h

@@ -648,6 +648,7 @@ protected:
     virtual void UpdatedTransaction(const uint256 &hash) {};
     virtual void Inventory(const uint256 &hash) {};
     virtual void ResendWalletTransactions() {};
+    virtual void BlockChecked(const CBlock&, const CValidationState&) {};
     friend void ::RegisterValidationInterface(CValidationInterface*);
     friend void ::UnregisterValidationInterface(CValidationInterface*);
     friend void ::UnregisterAllValidationInterfaces();