Merge pull request #3115 from sipa/walletmain

Interaction cleanups between main and wallet

1 files changed, 46 insertions, 119 deletions

diff --git a/src/main.cpp b/src/main.cpp
index 49fc7abbaf..3d339b4fdd 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -74,93 +74,52 @@ int64 nTransactionFee = 0;
 
 // These functions dispatch to one or all registered wallets
 
-
-void RegisterWallet(CWallet* pwalletIn)
-{
-    {
-        LOCK(cs_setpwalletRegistered);
-        setpwalletRegistered.insert(pwalletIn);
-    }
-}
-
-void UnregisterWallet(CWallet* pwalletIn)
-{
-    {
-        LOCK(cs_setpwalletRegistered);
-        setpwalletRegistered.erase(pwalletIn);
-    }
-}
-
-void UnregisterAllWallets()
-{
-    LOCK(cs_setpwalletRegistered);
-    setpwalletRegistered.clear();
-}
-
-// get the wallet transaction with the given hash (if it exists)
-bool static GetTransaction(const uint256& hashTx, CWalletTx& wtx)
-{
-    LOCK(cs_setpwalletRegistered);
-    BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
-        if (pwallet->GetTransaction(hashTx,wtx))
-            return true;
-    return false;
-}
-
-// erases transaction with the given hash from all wallets
-void static EraseFromWallets(uint256 hash)
-{
-    LOCK(cs_setpwalletRegistered);
-    BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
-        pwallet->EraseFromWallet(hash);
-}
-
-// make sure all wallets know about the given transaction, in the given block
-void SyncWithWallets(const uint256 &hash, const CTransaction& tx, const CBlock* pblock, bool fUpdate)
-{
-    LOCK(cs_setpwalletRegistered);
-    BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
-        pwallet->AddToWalletIfInvolvingMe(hash, tx, pblock, fUpdate);
+namespace {
+struct CMainSignals {
+    // Notifies listeners of updated transaction data (passing hash, transaction, and optionally the block it is found in.
+    boost::signals2::signal<void (const uint256 &, 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;
+} g_signals;
 }
 
-// notify wallets about a new best chain
-void static SetBestChain(const CBlockLocator& loc)
-{
-    LOCK(cs_setpwalletRegistered);
-    BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
-        pwallet->SetBestChain(loc);
-}
-
-// notify wallets about an updated transaction
-void static UpdatedTransaction(const uint256& hashTx)
-{
-    LOCK(cs_setpwalletRegistered);
-    BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
-        pwallet->UpdatedTransaction(hashTx);
+void RegisterWallet(CWalletInterface* pwalletIn) {
+    g_signals.SyncTransaction.connect(boost::bind(&CWalletInterface::SyncTransaction, pwalletIn, _1, _2, _3));
+    g_signals.EraseTransaction.connect(boost::bind(&CWalletInterface::EraseFromWallet, pwalletIn, _1));
+    g_signals.UpdatedTransaction.connect(boost::bind(&CWalletInterface::UpdatedTransaction, pwalletIn, _1));
+    g_signals.SetBestChain.connect(boost::bind(&CWalletInterface::SetBestChain, pwalletIn, _1));
+    g_signals.Inventory.connect(boost::bind(&CWalletInterface::Inventory, pwalletIn, _1));
+    g_signals.Broadcast.connect(boost::bind(&CWalletInterface::ResendWalletTransactions, pwalletIn));
 }
 
-// dump all wallets
-void static PrintWallets(const CBlock& block)
-{
-    LOCK(cs_setpwalletRegistered);
-    BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
-        pwallet->PrintWallet(block);
+void UnregisterWallet(CWalletInterface* pwalletIn) {
+    g_signals.Broadcast.disconnect(boost::bind(&CWalletInterface::ResendWalletTransactions, pwalletIn));
+    g_signals.Inventory.disconnect(boost::bind(&CWalletInterface::Inventory, pwalletIn, _1));
+    g_signals.SetBestChain.disconnect(boost::bind(&CWalletInterface::SetBestChain, pwalletIn, _1));
+    g_signals.UpdatedTransaction.disconnect(boost::bind(&CWalletInterface::UpdatedTransaction, pwalletIn, _1));
+    g_signals.EraseTransaction.disconnect(boost::bind(&CWalletInterface::EraseFromWallet, pwalletIn, _1));
+    g_signals.SyncTransaction.disconnect(boost::bind(&CWalletInterface::SyncTransaction, pwalletIn, _1, _2, _3));
 }
 
-// notify wallets about an incoming inventory (for request counts)
-void static Inventory(const uint256& hash)
-{
-    LOCK(cs_setpwalletRegistered);
-    BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
-        pwallet->Inventory(hash);
+void UnregisterAllWallets() {
+    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();
 }
 
-// ask wallets to resend their transactions
-void static ResendWalletTransactions()
-{
-    LOCK(cs_setpwalletRegistered);
-    BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
-        pwallet->ResendWalletTransactions();
+void SyncWithWallets(const uint256 &hash, const CTransaction &tx, const CBlock *pblock) {
+    g_signals.SyncTransaction(hash, tx, pblock);
 }
 
 //////////////////////////////////////////////////////////////////////////////
@@ -931,8 +890,8 @@ bool CTxMemPool::accept(CValidationState &state, const CTransaction &tx, bool fL
     ///// are we sure this is ok when loading transactions or restoring block txes
     // If updated, erase old tx from wallet
     if (ptxOld)
-        EraseFromWallets(ptxOld->GetHash());
-    SyncWithWallets(hash, tx, NULL, true);
+        g_signals.EraseTransaction(ptxOld->GetHash());
+    g_signals.SyncTransaction(hash, tx, NULL);
 
     LogPrint("mempool", "CTxMemPool::accept() : accepted %s (poolsz %"PRIszu")\n",
            hash.ToString().c_str(),
@@ -1095,27 +1054,6 @@ bool CMerkleTx::AcceptToMemoryPool(bool fLimitFree)
 }
 
 
-
-bool CWalletTx::AcceptWalletTransaction()
-{
-    {
-        LOCK(mempool.cs);
-        // Add previous supporting transactions first
-        BOOST_FOREACH(CMerkleTx& tx, vtxPrev)
-        {
-            if (!tx.IsCoinBase())
-            {
-                uint256 hash = tx.GetHash();
-                if (!mempool.exists(hash) && pcoinsTip->HaveCoins(hash))
-                    tx.AcceptToMemoryPool(false);
-            }
-        }
-        return AcceptToMemoryPool(false);
-    }
-    return false;
-}
-
-
 // Return transaction in tx, and if it was found inside a block, its hash is placed in hashBlock
 bool GetTransaction(const uint256 &hash, CTransaction &txOut, uint256 &hashBlock, bool fAllowSlow)
 {
@@ -1992,7 +1930,7 @@ bool ConnectBlock(CBlock& block, CValidationState& state, CBlockIndex* pindex, C
 
     // Watch for transactions paying to me
     for (unsigned int i = 0; i < block.vtx.size(); i++)
-        SyncWithWallets(block.GetTxHash(i), block.vtx[i], &block, true);
+        g_signals.SyncTransaction(block.GetTxHash(i), block.vtx[i], &block);
 
     return true;
 }
@@ -2126,7 +2064,7 @@ bool SetBestChain(CValidationState &state, CBlockIndex* pindexNew)
 
     // Update best block in wallet (so we can detect restored wallets)
     if ((pindexNew->nHeight % 20160) == 0 || (!fIsInitialDownload && (pindexNew->nHeight % 144) == 0))
-        ::SetBestChain(chainActive.GetLocator(pindexNew));
+        g_signals.SetBestChain(chainActive.GetLocator(pindexNew));
 
     // New best block
     nTimeBestReceived = GetTime();
@@ -2206,7 +2144,7 @@ bool AddToBlockIndex(CBlock& block, CValidationState& state, const CDiskBlockPos
         CheckForkWarningConditions();
         // Notify UI to display prev block's coinbase if it was ours
         static uint256 hashPrevBestCoinBase;
-        UpdatedTransaction(hashPrevBestCoinBase);
+        g_signals.UpdatedTransaction(hashPrevBestCoinBase);
         hashPrevBestCoinBase = block.GetTxHash(0);
     } else
         CheckForkWarningConditionsOnNewFork(pindexNew);
@@ -3041,8 +2979,6 @@ void PrintBlockTree()
             DateTimeStrFormat("%Y-%m-%d %H:%M:%S", block.GetBlockTime()).c_str(),
             block.vtx.size());
 
-        PrintWallets(block);
-
         // put the main time-chain first
         vector<CBlockIndex*>& vNext = mapNext[pindex];
         for (unsigned int i = 0; i < vNext.size(); i++)
@@ -3331,7 +3267,7 @@ void static ProcessGetData(CNode* pfrom)
             }
 
             // Track requests for our stuff.
-            Inventory(inv.hash);
+            g_signals.Inventory(inv.hash);
         }
     }
 
@@ -3593,7 +3529,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
             }
 
             // Track requests for our stuff
-            Inventory(inv.hash);
+            g_signals.Inventory(inv.hash);
         }
     }
 
@@ -4215,7 +4151,7 @@ bool SendMessages(CNode* pto, bool fSendTrickle)
         // transactions become unconfirmed and spams other nodes.
         if (!fReindex && !fImporting && !IsInitialBlockDownload())
         {
-            ResendWalletTransactions();
+            g_signals.Broadcast();
         }
 
         //
@@ -4243,15 +4179,6 @@ bool SendMessages(CNode* pto, bool fSendTrickle)
                     hashRand = Hash(BEGIN(hashRand), END(hashRand));
                     bool fTrickleWait = ((hashRand & 3) != 0);
 
-                    // always trickle our own transactions
-                    if (!fTrickleWait)
-                    {
-                        CWalletTx wtx;
-                        if (GetTransaction(inv.hash, wtx))
-                            if (wtx.fFromMe)
-                                fTrickleWait = true;
-                    }
-
                     if (fTrickleWait)
                     {
                         vInvWait.push_back(inv);