Includes: Refactor: Move CValidationInterface and CMainSignals out of main

6 files changed, 123 insertions, 96 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index 2c607c632e..1b3e0d9d5b 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -138,6 +138,7 @@ BITCOIN_CORE_H = \
   utilmoneystr.h \
   utilstrencodings.h \
   utiltime.h \
+  validationinterface.h \
   version.h \
   wallet/crypter.h \
   wallet/walletdb.h \
@@ -191,6 +192,7 @@ libbitcoin_server_a_SOURCES = \
   timedata.cpp \
   txdb.cpp \
   txmempool.cpp \
+  validationinterface.cpp \
   $(JSON_H) \
   $(BITCOIN_CORE_H)
 
diff --git a/src/main.cpp b/src/main.cpp
index aa6f904574..0ffacc338e 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -5,9 +5,9 @@
 
 #include "main.h"
 
-#include "arith_uint256.h"
 #include "addrman.h"
 #include "alert.h"
+#include "arith_uint256.h"
 #include "chainparams.h"
 #include "checkpoints.h"
 #include "checkqueue.h"
@@ -21,6 +21,7 @@
 #include "undo.h"
 #include "util.h"
 #include "utilmoneystr.h"
+#include "validationinterface.h"
 
 #include <sstream>
 
@@ -158,68 +159,6 @@ namespace {
 
 //////////////////////////////////////////////////////////////////////////////
 //
-// dispatching functions
-//
-
-// These functions dispatch to one or all registered wallets
-
-namespace {
-
-struct CMainSignals {
-    /** Notifies listeners of updated transaction data (transaction, and optionally the block it is found in. */
-    boost::signals2::signal<void (const CTransaction &, const CBlock *)> SyncTransaction;
-    /** Notifies listeners of an erased transaction (currently disabled, requires transaction replacement). */
-    boost::signals2::signal<void (const uint256 &)> EraseTransaction;
-    /** Notifies listeners of an updated transaction without new data (for now: a coinbase potentially becoming visible). */
-    boost::signals2::signal<void (const uint256 &)> UpdatedTransaction;
-    /** Notifies listeners of a new active block chain. */
-    boost::signals2::signal<void (const CBlockLocator &)> SetBestChain;
-    /** Notifies listeners about an inventory item being seen on the network. */
-    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
-
-void RegisterValidationInterface(CValidationInterface* pwalletIn) {
-    g_signals.SyncTransaction.connect(boost::bind(&CValidationInterface::SyncTransaction, pwalletIn, _1, _2));
-    g_signals.EraseTransaction.connect(boost::bind(&CValidationInterface::EraseFromWallet, pwalletIn, _1));
-    g_signals.UpdatedTransaction.connect(boost::bind(&CValidationInterface::UpdatedTransaction, pwalletIn, _1));
-    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));
-    g_signals.UpdatedTransaction.disconnect(boost::bind(&CValidationInterface::UpdatedTransaction, pwalletIn, _1));
-    g_signals.EraseTransaction.disconnect(boost::bind(&CValidationInterface::EraseFromWallet, pwalletIn, _1));
-    g_signals.SyncTransaction.disconnect(boost::bind(&CValidationInterface::SyncTransaction, pwalletIn, _1, _2));
-}
-
-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();
-    g_signals.UpdatedTransaction.disconnect_all_slots();
-    g_signals.EraseTransaction.disconnect_all_slots();
-    g_signals.SyncTransaction.disconnect_all_slots();
-}
-
-void SyncWithWallets(const CTransaction &tx, const CBlock *pblock) {
-    g_signals.SyncTransaction(tx, pblock);
-}
-
-//////////////////////////////////////////////////////////////////////////////
-//
 // Registration of network node signals.
 //
 
@@ -1897,7 +1836,7 @@ bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pin
 
     // Watch for changes to the previous coinbase transaction.
     static uint256 hashPrevBestCoinBase;
-    g_signals.UpdatedTransaction(hashPrevBestCoinBase);
+    GetMainSignals().UpdatedTransaction(hashPrevBestCoinBase);
     hashPrevBestCoinBase = block.vtx[0].GetHash();
 
     int64_t nTime4 = GetTimeMicros(); nTimeCallbacks += nTime4 - nTime3;
@@ -1956,7 +1895,7 @@ bool static FlushStateToDisk(CValidationState &state, FlushStateMode mode) {
             return state.Abort("Failed to write to coin database");
         // Update best block in wallet (so we can detect restored wallets).
         if (mode != FLUSH_STATE_IF_NEEDED) {
-            g_signals.SetBestChain(chainActive.GetLocator());
+            GetMainSignals().SetBestChain(chainActive.GetLocator());
         }
         nLastWrite = GetTimeMicros();
     }
@@ -2080,7 +2019,7 @@ bool static ConnectTip(CValidationState &state, CBlockIndex *pindexNew, CBlock *
         CCoinsViewCache view(pcoinsTip);
         CInv inv(MSG_BLOCK, pindexNew->GetBlockHash());
         bool rv = ConnectBlock(*pblock, state, pindexNew, view);
-        g_signals.BlockChecked(*pblock, state);
+        GetMainSignals().BlockChecked(*pblock, state);
         if (!rv) {
             if (state.IsInvalid())
                 InvalidBlockFound(pindexNew, state);
@@ -3471,7 +3410,7 @@ void static ProcessGetData(CNode* pfrom)
             }
 
             // Track requests for our stuff.
-            g_signals.Inventory(inv.hash);
+            GetMainSignals().Inventory(inv.hash);
 
             if (inv.type == MSG_BLOCK || inv.type == MSG_FILTERED_BLOCK)
                 break;
@@ -3765,7 +3704,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
             }
 
             // Track requests for our stuff
-            g_signals.Inventory(inv.hash);
+            GetMainSignals().Inventory(inv.hash);
 
             if (pfrom->nSendSize > (SendBufferSize() * 2)) {
                 Misbehaving(pfrom->GetId(), 50);
@@ -4536,7 +4475,7 @@ bool SendMessages(CNode* pto, bool fSendTrickle)
         // transactions become unconfirmed and spams other nodes.
         if (!fReindex && !fImporting && !IsInitialBlockDownload())
         {
-            g_signals.Broadcast();
+            GetMainSignals().Broadcast();
         }
 
         //
diff --git a/src/main.h b/src/main.h
index 936cd43e99..b0bab6f7bf 100644
--- a/src/main.h
+++ b/src/main.h
@@ -133,15 +133,6 @@ extern CBlockIndex *pindexBestHeader;
 /** Minimum disk space required - used in CheckDiskSpace() */
 static const uint64_t nMinDiskSpace = 52428800;
 
-/** Register a wallet to receive updates from core */
-void RegisterValidationInterface(CValidationInterface* pwalletIn);
-/** Unregister a wallet from core */
-void UnregisterValidationInterface(CValidationInterface* pwalletIn);
-/** Unregister all wallets from core */
-void UnregisterAllValidationInterfaces();
-/** Push an updated transaction to all registered wallets */
-void SyncWithWallets(const CTransaction& tx, const CBlock* pblock = NULL);
-
 /** Register with a network node to receive its signals */
 void RegisterNodeSignals(CNodeSignals& nodeSignals);
 /** Unregister a network node */
@@ -152,7 +143,7 @@ void UnregisterNodeSignals(CNodeSignals& nodeSignals);
  * block is made active. Note that it does not, however, guarantee that the
  * specific block passed to it has been checked for validity!
  * 
- * @param[out]  state   This may be set to an Error state if any error occurred processing it, including during validation/connection/etc of otherwise unrelated blocks during reorganisation; or it may be set to an Invalid state if pblock is itself invalid (but this is not guaranteed even when the block is checked). If you want to *possibly* get feedback on whether pblock is valid, you must also install a CValidationInterface - this will have its BlockChecked method called whenever *any* block completes validation.
+ * @param[out]  state   This may be set to an Error state if any error occurred processing it, including during validation/connection/etc of otherwise unrelated blocks during reorganisation; or it may be set to an Invalid state if pblock is itself invalid (but this is not guaranteed even when the block is checked). If you want to *possibly* get feedback on whether pblock is valid, you must also install a CValidationInterface (see validationinterface.h) - this will have its BlockChecked method called whenever *any* block completes validation.
  * @param[in]   pfrom   The node which we are receiving the block from; it is added to mapBlockSource and may be penalised if the block is invalid.
  * @param[in]   pblock  The block we want to process.
  * @param[out]  dbp     If pblock is stored to disk (or already there), this will be set to its location.
@@ -512,19 +503,4 @@ extern CCoinsViewCache *pcoinsTip;
 /** Global variable that points to the active block tree (protected by cs_main) */
 extern CBlockTreeDB *pblocktree;
 
-
-class CValidationInterface {
-protected:
-    virtual void SyncTransaction(const CTransaction &tx, const CBlock *pblock) {};
-    virtual void EraseFromWallet(const uint256 &hash) {};
-    virtual void SetBestChain(const CBlockLocator &locator) {};
-    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();
-};
-
 #endif // BITCOIN_MAIN_H
diff --git a/src/validationinterface.cpp b/src/validationinterface.cpp
new file mode 100644
index 0000000000..ae4cd3c592
--- /dev/null
+++ b/src/validationinterface.cpp
@@ -0,0 +1,47 @@
+// Copyright (c) 2009-2010 Satoshi Nakamoto
+// Copyright (c) 2009-2014 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include "validationinterface.h"
+
+static CMainSignals g_signals;
+
+CMainSignals& GetMainSignals()
+{
+    return g_signals;
+}
+
+void RegisterValidationInterface(CValidationInterface* pwalletIn) {
+    g_signals.SyncTransaction.connect(boost::bind(&CValidationInterface::SyncTransaction, pwalletIn, _1, _2));
+    g_signals.EraseTransaction.connect(boost::bind(&CValidationInterface::EraseFromWallet, pwalletIn, _1));
+    g_signals.UpdatedTransaction.connect(boost::bind(&CValidationInterface::UpdatedTransaction, pwalletIn, _1));
+    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));
+    g_signals.UpdatedTransaction.disconnect(boost::bind(&CValidationInterface::UpdatedTransaction, pwalletIn, _1));
+    g_signals.EraseTransaction.disconnect(boost::bind(&CValidationInterface::EraseFromWallet, pwalletIn, _1));
+    g_signals.SyncTransaction.disconnect(boost::bind(&CValidationInterface::SyncTransaction, pwalletIn, _1, _2));
+}
+
+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();
+    g_signals.UpdatedTransaction.disconnect_all_slots();
+    g_signals.EraseTransaction.disconnect_all_slots();
+    g_signals.SyncTransaction.disconnect_all_slots();
+}
+
+void SyncWithWallets(const CTransaction &tx, const CBlock *pblock) {
+    g_signals.SyncTransaction(tx, pblock);
+}
diff --git a/src/validationinterface.h b/src/validationinterface.h
new file mode 100644
index 0000000000..b21b6e5782
--- /dev/null
+++ b/src/validationinterface.h
@@ -0,0 +1,62 @@
+// Copyright (c) 2009-2010 Satoshi Nakamoto
+// Copyright (c) 2009-2014 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_VALIDATIONINTERFACE_H
+#define BITCOIN_VALIDATIONINTERFACE_H
+
+#include <boost/signals2/signal.hpp>
+
+class CBlock;
+class CBlockLocator;
+class CTransaction;
+class CValidationInterface;
+class CValidationState;
+class uint256;
+
+// These functions dispatch to one or all registered wallets
+
+/** Register a wallet to receive updates from core */
+void RegisterValidationInterface(CValidationInterface* pwalletIn);
+/** Unregister a wallet from core */
+void UnregisterValidationInterface(CValidationInterface* pwalletIn);
+/** Unregister all wallets from core */
+void UnregisterAllValidationInterfaces();
+/** Push an updated transaction to all registered wallets */
+void SyncWithWallets(const CTransaction& tx, const CBlock* pblock = NULL);
+
+class CValidationInterface {
+protected:
+    virtual void SyncTransaction(const CTransaction &tx, const CBlock *pblock) {};
+    virtual void EraseFromWallet(const uint256 &hash) {};
+    virtual void SetBestChain(const CBlockLocator &locator) {};
+    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();
+};
+
+struct CMainSignals {
+    /** Notifies listeners of updated transaction data (transaction, and optionally the block it is found in. */
+    boost::signals2::signal<void (const CTransaction &, const CBlock *)> SyncTransaction;
+    /** Notifies listeners of an erased transaction (currently disabled, requires transaction replacement). */
+    boost::signals2::signal<void (const uint256 &)> EraseTransaction;
+    /** Notifies listeners of an updated transaction without new data (for now: a coinbase potentially becoming visible). */
+    boost::signals2::signal<void (const uint256 &)> UpdatedTransaction;
+    /** Notifies listeners of a new active block chain. */
+    boost::signals2::signal<void (const CBlockLocator &)> SetBestChain;
+    /** Notifies listeners about an inventory item being seen on the network. */
+    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;
+};
+
+CMainSignals& GetMainSignals();
+
+#endif // BITCOIN_VALIDATIONINTERFACE_H
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index 3f5f2859b6..3010444978 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -7,12 +7,13 @@
 #define BITCOIN_WALLET_H
 
 #include "amount.h"
-#include "primitives/block.h"
-#include "primitives/transaction.h"
 #include "key.h"
 #include "keystore.h"
 #include "main.h"
+#include "primitives/block.h"
+#include "primitives/transaction.h"
 #include "ui_interface.h"
+#include "validationinterface.h"
 #include "wallet/crypter.h"
 #include "wallet/wallet_ismine.h"
 #include "wallet/walletdb.h"