Merge pull request #3239 from gavinandresen/mempool_verbose

Add verbose flag to getrawmempool

src/coins.cpp

@@ -178,3 +178,19 @@ bool CCoinsViewCache::HaveInputs(const CTransaction& tx)
     }
     return true;
 }
+
+double CCoinsViewCache::GetPriority(const CTransaction &tx, int nHeight)
+{
+    if (tx.IsCoinBase())
+        return 0.0;
+    double dResult = 0.0;
+    BOOST_FOREACH(const CTxIn& txin, tx.vin)
+    {
+        const CCoins &coins = GetCoins(txin.prevout.hash);
+        if (!coins.IsAvailable(txin.prevout.n)) continue;
+        if (coins.nHeight < nHeight) {
+            dResult += coins.vout[txin.prevout.n].nValue * (nHeight-coins.nHeight);
+        }
+    }
+    return tx.ComputePriority(dResult);
+}

src/coins.h

@@ -340,13 +340,15 @@ public:
 
         @param[in] tx	transaction for which we are checking input total
         @return	Sum of value of all inputs (scriptSigs)
-        @see CTransaction::FetchInputs
      */
     int64_t GetValueIn(const CTransaction& tx);
 
     // Check whether all prevouts of the transaction are present in the UTXO set represented by this view
     bool HaveInputs(const CTransaction& tx);
 
+    // Return priority of tx at height nHeight
+    double GetPriority(const CTransaction &tx, int nHeight);
+
     const CTxOut &GetOutputFor(const CTxIn& input);
 
 private:

src/core.cpp

@@ -106,6 +106,37 @@ bool CTransaction::IsNewerThan(const CTransaction& old) const
     return fNewer;
 }
 
+int64_t CTransaction::GetValueOut() const
+{
+    int64_t nValueOut = 0;
+    BOOST_FOREACH(const CTxOut& txout, vout)
+    {
+        nValueOut += txout.nValue;
+        if (!MoneyRange(txout.nValue) || !MoneyRange(nValueOut))
+            throw std::runtime_error("CTransaction::GetValueOut() : value out of range");
+    }
+    return nValueOut;
+}
+
+double CTransaction::ComputePriority(double dPriorityInputs, unsigned int nTxSize) const
+{
+    // In order to avoid disincentivizing cleaning up the UTXO set we don't count
+    // the constant overhead for each txin and up to 110 bytes of scriptSig (which
+    // is enough to cover a compressed pubkey p2sh redemption) for priority.
+    // Providing any more cleanup incentive than making additional inputs free would
+    // risk encouraging people to create junk outputs to redeem later.
+    if (nTxSize == 0)
+        nTxSize = ::GetSerializeSize(*this, SER_NETWORK, PROTOCOL_VERSION);
+    BOOST_FOREACH(const CTxIn& txin, vin)
+    {
+        unsigned int offset = 41U + std::min(110U, (unsigned int)txin.scriptSig.size());
+        if (nTxSize > offset)
+            nTxSize -= offset;
+    }
+    if (nTxSize == 0) return 0.0;
+    return dPriorityInputs / nTxSize;
+}
+
 std::string CTransaction::ToString() const
 {
     std::string str;

src/core.h

@@ -14,6 +14,10 @@
 
 class CTransaction;
 
+/** No amount larger than this (in satoshi) is valid */
+static const int64_t MAX_MONEY = 21000000 * COIN;
+inline bool MoneyRange(int64_t nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); }
+
 /** An outpoint - a combination of a transaction hash and an index n into its vout */
 class COutPoint
 {
@@ -50,11 +54,11 @@ public:
 class CInPoint
 {
 public:
-    CTransaction* ptx;
+    const CTransaction* ptx;
     unsigned int n;
 
     CInPoint() { SetNull(); }
-    CInPoint(CTransaction* ptxIn, unsigned int nIn) { ptx = ptxIn; n = nIn; }
+    CInPoint(const CTransaction* ptxIn, unsigned int nIn) { ptx = ptxIn; n = nIn; }
     void SetNull() { ptx = NULL; n = (unsigned int) -1; }
     bool IsNull() const { return (ptx == NULL && n == (unsigned int) -1); }
 };
@@ -217,6 +221,14 @@ public:
     uint256 GetHash() const;
     bool IsNewerThan(const CTransaction& old) const;
 
+    // Return sum of txouts.
+    int64_t GetValueOut() const;
+    // GetValueIn() is a method on CCoinsViewCache, because
+    // inputs must be known to compute value in.
+
+    // Compute priority, given priority of inputs and (optionally) tx size
+    double ComputePriority(double dPriorityInputs, unsigned int nTxSize=0) const;
+
     bool IsCoinBase() const
     {
         return (vin.size() == 1 && vin[0].prevout.IsNull());

src/main.cpp

@@ -379,21 +379,6 @@ bool IsFinalTx(const CTransaction &tx, int nBlockHeight, int64_t nBlockTime)
     return true;
 }
 
-/** Amount of bitcoins spent by the transaction.
-    @return sum of all outputs (note: does not include fees)
- */
-int64_t GetValueOut(const CTransaction& tx)
-{
-    int64_t nValueOut = 0;
-    BOOST_FOREACH(const CTxOut& txout, tx.vout)
-    {
-        nValueOut += txout.nValue;
-        if (!MoneyRange(txout.nValue) || !MoneyRange(nValueOut))
-            throw std::runtime_error("GetValueOut() : value out of range");
-    }
-    return nValueOut;
-}
-
 //
 // Check transaction inputs, and make sure any
 // pay-to-script-hash transactions are evaluating IsStandard scripts
@@ -660,7 +645,6 @@ bool AcceptToMemoryPool(CTxMemPool& pool, CValidationState &state, const CTransa
         return false;
 
     // Check for conflicts with in-memory transactions
-    CTransaction* ptxOld = NULL;
     {
     LOCK(pool.cs); // protect pool.mapNextTx
     for (unsigned int i = 0; i < tx.vin.size(); i++)
@@ -670,22 +654,6 @@ bool AcceptToMemoryPool(CTxMemPool& pool, CValidationState &state, const CTransa
         {
             // Disable replacement feature for now
             return false;
-
-            // Allow replacing with a newer version of the same transaction
-            if (i != 0)
-                return false;
-            ptxOld = pool.mapNextTx[outpoint].ptx;
-            if (IsFinalTx(*ptxOld))
-                return false;
-            if (!tx.IsNewerThan(*ptxOld))
-                return false;
-            for (unsigned int i = 0; i < tx.vin.size(); i++)
-            {
-                COutPoint outpoint = tx.vin[i].prevout;
-                if (!pool.mapNextTx.count(outpoint) || pool.mapNextTx[outpoint].ptx != ptxOld)
-                    return false;
-            }
-            break;
         }
     }
     }
@@ -734,8 +702,13 @@ bool AcceptToMemoryPool(CTxMemPool& pool, CValidationState &state, const CTransa
         // you should add code here to check that the transaction does a
         // reasonable number of ECDSA signature verifications.
 
-        int64_t nFees = view.GetValueIn(tx)-GetValueOut(tx);
-        unsigned int nSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION);
+        int64_t nValueIn = view.GetValueIn(tx);
+        int64_t nValueOut = tx.GetValueOut();
+        int64_t nFees = nValueIn-nValueOut;
+        double dPriority = view.GetPriority(tx, chainActive.Height());
+
+        CTxMemPoolEntry entry(tx, nFees, GetTime(), dPriority, chainActive.Height());
+        unsigned int nSize = entry.GetTxSize();
 
         // Don't accept it if it can't get into a block
         int64_t txMinFee = GetMinFee(tx, nSize, true, GMF_RELAY);
@@ -779,22 +752,10 @@ bool AcceptToMemoryPool(CTxMemPool& pool, CValidationState &state, const CTransa
         {
             return error("AcceptToMemoryPool: : ConnectInputs failed %s", hash.ToString().c_str());
         }
+        // Store transaction in memory
+        pool.addUnchecked(hash, entry);
     }
 
-    // Store transaction in memory
-    {
-        if (ptxOld)
-        {
-            LogPrint("mempool", "AcceptToMemoryPool: : replacing tx %s with new version\n", ptxOld->GetHash().ToString().c_str());
-            pool.remove(*ptxOld);
-        }
-        pool.addUnchecked(hash, tx);
-    }
-
-    ///// are we sure this is ok when loading transactions or restoring block txes
-    // If updated, erase old tx from wallet
-    if (ptxOld)
-        g_signals.EraseTransaction(ptxOld->GetHash());
     g_signals.SyncTransaction(hash, tx, NULL);
 
     return true;
@@ -1370,12 +1331,12 @@ bool CheckInputs(const CTransaction& tx, CValidationState &state, CCoinsViewCach
 
         }
 
-        if (nValueIn < GetValueOut(tx))
+        if (nValueIn < tx.GetValueOut())
             return state.DoS(100, error("CheckInputs() : %s value in < value out", tx.GetHash().ToString().c_str()),
                              REJECT_INVALID, "in < out");
 
         // Tally transaction fees
-        int64_t nTxFee = nValueIn - GetValueOut(tx);
+        int64_t nTxFee = nValueIn - tx.GetValueOut();
         if (nTxFee < 0)
             return state.DoS(100, error("CheckInputs() : %s nTxFee < 0", tx.GetHash().ToString().c_str()),
                              REJECT_INVALID, "fee < 0");
@@ -1628,7 +1589,7 @@ bool ConnectBlock(CBlock& block, CValidationState& state, CBlockIndex* pindex, C
                                      REJECT_INVALID, "too many sigops");
             }
 
-            nFees += view.GetValueIn(tx)-GetValueOut(tx);
+            nFees += view.GetValueIn(tx)-tx.GetValueOut();
 
             std::vector<CScriptCheck> vChecks;
             if (!CheckInputs(tx, state, view, fScriptChecks, flags, nScriptCheckThreads ? &vChecks : NULL))
@@ -1648,10 +1609,10 @@ bool ConnectBlock(CBlock& block, CValidationState& state, CBlockIndex* pindex, C
     if (fBenchmark)
         LogPrintf("- Connect %u transactions: %.2fms (%.3fms/tx, %.3fms/txin)\n", (unsigned)block.vtx.size(), 0.001 * nTime, 0.001 * nTime / block.vtx.size(), nInputs <= 1 ? 0 : 0.001 * nTime / (nInputs-1));
 
-    if (GetValueOut(block.vtx[0]) > GetBlockValue(pindex->nHeight, nFees))
+    if (block.vtx[0].GetValueOut() > GetBlockValue(pindex->nHeight, nFees))
         return state.DoS(100,
                          error("ConnectBlock() : coinbase pays too much (actual=%"PRId64" vs limit=%"PRId64")",
-                               GetValueOut(block.vtx[0]), GetBlockValue(pindex->nHeight, nFees)),
+                               block.vtx[0].GetValueOut(), GetBlockValue(pindex->nHeight, nFees)),
                          REJECT_INVALID, "coinbase too large");
 
     if (!control.Wait())

src/main.h

@@ -49,9 +49,6 @@ static const unsigned int MAX_BLOCKFILE_SIZE = 0x8000000; // 128 MiB
 static const unsigned int BLOCKFILE_CHUNK_SIZE = 0x1000000; // 16 MiB
 /** The pre-allocation chunk size for rev?????.dat files (since 0.8) */
 static const unsigned int UNDOFILE_CHUNK_SIZE = 0x100000; // 1 MiB
-/** No amount larger than this (in satoshi) is valid */
-static const int64_t MAX_MONEY = 21000000 * COIN;
-inline bool MoneyRange(int64_t nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); }
 /** Coinbase transaction outputs can only be spent after this number of new blocks (network rule) */
 static const int COINBASE_MATURITY = 100;
 /** Threshold for nLockTime: below this value it is interpreted as block number, otherwise as UNIX timestamp. */
@@ -320,11 +317,6 @@ bool IsStandardTx(const CTransaction& tx, std::string& reason);
 
 bool IsFinalTx(const CTransaction &tx, int nBlockHeight = 0, int64_t nBlockTime = 0);
 
-/** Amount of bitcoins spent by the transaction.
-    @return sum of all outputs (note: does not include fees)
- */
-int64_t GetValueOut(const CTransaction& tx);
-
 /** Undo information for a CBlock */
 class CBlockUndo
 {

src/miner.cpp

@@ -93,12 +93,12 @@ unsigned int static ScanHash_CryptoPP(char* pmidstate, char* pdata, char* phash1
 class COrphan
 {
 public:
-    CTransaction* ptx;
+    const CTransaction* ptx;
     set<uint256> setDependsOn;
     double dPriority;
     double dFeePerKb;
 
-    COrphan(CTransaction* ptxIn)
+    COrphan(const CTransaction* ptxIn)
     {
         ptx = ptxIn;
         dPriority = dFeePerKb = 0;
@@ -118,7 +118,7 @@ uint64_t nLastBlockTx = 0;
 uint64_t nLastBlockSize = 0;
 
 // We want to sort transactions by priority and fee, so:
-typedef boost::tuple<double, double, CTransaction*> TxPriority;
+typedef boost::tuple<double, double, const CTransaction*> TxPriority;
 class TxPriorityCompare
 {
     bool byFee;
@@ -191,9 +191,10 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn)
         // This vector will be sorted into a priority queue:
         vector<TxPriority> vecPriority;
         vecPriority.reserve(mempool.mapTx.size());
-        for (map<uint256, CTransaction>::iterator mi = mempool.mapTx.begin(); mi != mempool.mapTx.end(); ++mi)
+        for (map<uint256, CTxMemPoolEntry>::iterator mi = mempool.mapTx.begin();
+             mi != mempool.mapTx.end(); ++mi)
         {
-            CTransaction& tx = (*mi).second;
+            const CTransaction& tx = mi->second.GetTx();
             if (tx.IsCoinBase() || !IsFinalTx(tx))
                 continue;
 
@@ -228,7 +229,7 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn)
                     }
                     mapDependers[txin.prevout.hash].push_back(porphan);
                     porphan->setDependsOn.insert(txin.prevout.hash);
-                    nTotalIn += mempool.mapTx[txin.prevout.hash].vout[txin.prevout.n].nValue;
+                    nTotalIn += mempool.mapTx[txin.prevout.hash].GetTx().vout[txin.prevout.n].nValue;
                     continue;
                 }
                 const CCoins &coins = view.GetCoins(txin.prevout.hash);
@@ -244,24 +245,12 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn)
 
             // Priority is sum(valuein * age) / modified_txsize
             unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION);
-            unsigned int nTxSizeMod = nTxSize;
-            // In order to avoid disincentivizing cleaning up the UTXO set we don't count
-            // the constant overhead for each txin and up to 110 bytes of scriptSig (which
-            // is enough to cover a compressed pubkey p2sh redemption) for priority.
-            // Providing any more cleanup incentive than making additional inputs free would
-            // risk encouraging people to create junk outputs to redeem later.
-            BOOST_FOREACH(const CTxIn& txin, tx.vin)
-            {
-                unsigned int offset = 41U + min(110U, (unsigned int)txin.scriptSig.size());
-                if (nTxSizeMod > offset)
-                    nTxSizeMod -= offset;
-            }
-            dPriority /= nTxSizeMod;
+            dPriority = tx.ComputePriority(dPriority, nTxSize);
 
             // This is a more accurate fee-per-kilobyte than is used by the client code, because the
             // client code rounds up the size to the nearest 1K. That's good, because it gives an
             // incentive to create smaller transactions.
-            double dFeePerKb =  double(nTotalIn-GetValueOut(tx)) / (double(nTxSize)/1000.0);
+            double dFeePerKb =  double(nTotalIn-tx.GetValueOut()) / (double(nTxSize)/1000.0);
 
             if (porphan)
             {
@@ -269,7 +258,7 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn)
                 porphan->dFeePerKb = dFeePerKb;
             }
             else
-                vecPriority.push_back(TxPriority(dPriority, dFeePerKb, &(*mi).second));
+                vecPriority.push_back(TxPriority(dPriority, dFeePerKb, &mi->second.GetTx()));
         }
 
         // Collect transactions into block
@@ -286,7 +275,7 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn)
             // Take highest priority transaction off the priority queue:
             double dPriority = vecPriority.front().get<0>();
             double dFeePerKb = vecPriority.front().get<1>();
-            CTransaction& tx = *(vecPriority.front().get<2>());
+            const CTransaction& tx = *(vecPriority.front().get<2>());
 
             std::pop_heap(vecPriority.begin(), vecPriority.end(), comparer);
             vecPriority.pop_back();
@@ -318,7 +307,7 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn)
             if (!view.HaveInputs(tx))
                 continue;
 
-            int64_t nTxFees = view.GetValueIn(tx)-GetValueOut(tx);
+            int64_t nTxFees = view.GetValueIn(tx)-tx.GetValueOut();
 
             nTxSigOps += GetP2SHSigOpCount(tx, view);
             if (nBlockSigOps + nTxSigOps >= MAX_BLOCK_SIGOPS)

src/qt/transactiondesc.cpp

@@ -194,7 +194,7 @@ QString TransactionDesc::toHTML(CWallet *wallet, CWalletTx &wtx, int vout, int u
                     strHTML += "<b>" + tr("Credit") + ":</b> " + BitcoinUnits::formatWithUnit(unit, nValue) + "<br>";
                 }
 
-                int64_t nTxFee = nDebit - GetValueOut(wtx);
+                int64_t nTxFee = nDebit - wtx.GetValueOut();
                 if (nTxFee > 0)
                     strHTML += "<b>" + tr("Transaction fee") + ":</b> " + BitcoinUnits::formatWithUnit(unit, -nTxFee) + "<br>";
             }

src/qt/transactionrecord.cpp

@@ -95,7 +95,7 @@ QList<TransactionRecord> TransactionRecord::decomposeTransaction(const CWallet *
             //
             // Debit
             //
-            int64_t nTxFee = nDebit - GetValueOut(wtx);
+            int64_t nTxFee = nDebit - wtx.GetValueOut();
 
             for (unsigned int nOut = 0; nOut < wtx.vout.size(); nOut++)
             {

src/rpcblockchain.cpp

@@ -153,28 +153,79 @@ Value settxfee(const Array& params, bool fHelp)
 
 Value getrawmempool(const Array& params, bool fHelp)
 {
-    if (fHelp || params.size() != 0)
+    if (fHelp || params.size() > 1)
         throw runtime_error(
-            "getrawmempool\n"
+            "getrawmempool ( verbose )\n"
             "\nReturns all transaction ids in memory pool as a json array of string transaction ids.\n"
-            "\nResult:\n"
-            "[                       (json array of string)\n"
+            "\nArguments:\n"
+            "1. verbose           (boolean, optional, default=false) true for a json object, false for array of transaction ids\n"
+            "\nResult: (for verbose = false):\n"
+            "[                     (json array of string)\n"
             "  \"transactionid\"     (string) The transaction id\n"
             "  ,...\n"
             "]\n"
+            "\nResult: (for verbose = true):\n"
+            "{                           (json object)\n"
+            "  \"transactionid\" : {       (json object)\n"
+            "    \"size\" : n,             (numeric) transaction size in bytes\n"
+            "    \"fee\" : n,              (numeric) transaction fee in bitcoins\n"
+            "    \"time\" : n,             (numeric) local time transaction entered pool in seconds since 1 Jan 1970 GMT\n"
+            "    \"height\" : n,           (numeric) block height when transaction entered pool\n"
+            "    \"startingpriority\" : n, (numeric) priority when transaction entered pool\n"
+            "    \"currentpriority\" : n,  (numeric) transaction priority now\n"
+            "    \"depends\" : [           (array) unconfirmed transactions used as inputs for this transaction\n"
+            "        \"transactionid\",    (string) parent transaction id\n"
+            "       ... ]\n"
+            "  }, ...\n"
+            "]\n"
             "\nExamples\n"
-            + HelpExampleCli("getrawmempool", "")
-            + HelpExampleRpc("getrawmempool", "")
+            + HelpExampleCli("getrawmempool", "true")
+            + HelpExampleRpc("getrawmempool", "true")
         );
 
-    vector<uint256> vtxid;
-    mempool.queryHashes(vtxid);
+    bool fVerbose = false;
+    if (params.size() > 0)
+        fVerbose = params[0].get_bool();
+
+    if (fVerbose)
+    {
+        LOCK(mempool.cs);
+        Object o;
+        BOOST_FOREACH(const PAIRTYPE(uint256, CTxMemPoolEntry)& entry, mempool.mapTx)
+        {
+            const uint256& hash = entry.first;
+            const CTxMemPoolEntry& e = entry.second;
+            Object info;
+            info.push_back(Pair("size", (int)e.GetTxSize()));
+            info.push_back(Pair("fee", ValueFromAmount(e.GetFee())));
+            info.push_back(Pair("time", (boost::int64_t)e.GetTime()));
+            info.push_back(Pair("height", (int)e.GetHeight()));
+            info.push_back(Pair("startingpriority", e.GetPriority(e.GetHeight())));
+            info.push_back(Pair("currentpriority", e.GetPriority(chainActive.Height())));
+            const CTransaction& tx = e.GetTx();
+            set<string> setDepends;
+            BOOST_FOREACH(const CTxIn& txin, tx.vin)
+            {
+                if (mempool.exists(txin.prevout.hash))
+                    setDepends.insert(txin.prevout.hash.ToString());
+            }
+            Array depends(setDepends.begin(), setDepends.end());
+            info.push_back(Pair("depends", depends));
+            o.push_back(Pair(hash.ToString(), info));
+        }
+        return o;
+    }
+    else
+    {
+        vector<uint256> vtxid;
+        mempool.queryHashes(vtxid);
 
-    Array a;
-    BOOST_FOREACH(const uint256& hash, vtxid)
-        a.push_back(hash.ToString());
+        Array a;
+        BOOST_FOREACH(const uint256& hash, vtxid)
+            a.push_back(hash.ToString());
 
-    return a;
+        return a;
+    }
 }
 
 Value getblockhash(const Array& params, bool fHelp)

src/rpcclient.cpp

@@ -176,6 +176,7 @@ Array RPCConvertValues(const std::string &strMethod, const std::vector<std::stri
     if (strMethod == "verifychain"            && n > 0) ConvertTo<boost::int64_t>(params[0]);
     if (strMethod == "verifychain"            && n > 1) ConvertTo<boost::int64_t>(params[1]);
     if (strMethod == "keypoolrefill"          && n > 0) ConvertTo<boost::int64_t>(params[0]);
+    if (strMethod == "getrawmempool"          && n > 0) ConvertTo<bool>(params[0]);
 
     return params;
 }

src/rpcwallet.cpp

@@ -1673,7 +1673,7 @@ Value gettransaction(const Array& params, bool fHelp)
     int64_t nCredit = wtx.GetCredit();
     int64_t nDebit = wtx.GetDebit();
     int64_t nNet = nCredit - nDebit;
-    int64_t nFee = (wtx.IsFromMe() ? GetValueOut(wtx) - nDebit : 0);
+    int64_t nFee = (wtx.IsFromMe() ? wtx.GetValueOut() - nDebit : 0);
 
     entry.push_back(Pair("amount", ValueFromAmount(nNet - nFee)));
     if (wtx.IsFromMe())

src/test/miner_tests.cpp

@@ -99,7 +99,7 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
     {
         tx.vout[0].nValue -= 1000000;
         hash = tx.GetHash();
-        mempool.addUnchecked(hash, tx);
+        mempool.addUnchecked(hash, CTxMemPoolEntry(tx, 11, GetTime(), 111.0, 11));
         tx.vin[0].prevout.hash = hash;
     }
     BOOST_CHECK(pblocktemplate = CreateNewBlockWithKey(reservekey));
@@ -119,7 +119,7 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
     {
         tx.vout[0].nValue -= 10000000;
         hash = tx.GetHash();
-        mempool.addUnchecked(hash, tx);
+        mempool.addUnchecked(hash, CTxMemPoolEntry(tx, 11, GetTime(), 111.0, 11));
         tx.vin[0].prevout.hash = hash;
     }
     BOOST_CHECK(pblocktemplate = CreateNewBlockWithKey(reservekey));
@@ -128,7 +128,7 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
 
     // orphan in mempool
     hash = tx.GetHash();
-    mempool.addUnchecked(hash, tx);
+    mempool.addUnchecked(hash, CTxMemPoolEntry(tx, 11, GetTime(), 111.0, 11));
     BOOST_CHECK(pblocktemplate = CreateNewBlockWithKey(reservekey));
     delete pblocktemplate;
     mempool.clear();
@@ -138,7 +138,7 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
     tx.vin[0].prevout.hash = txFirst[1]->GetHash();
     tx.vout[0].nValue = 4900000000LL;
     hash = tx.GetHash();
-    mempool.addUnchecked(hash, tx);
+    mempool.addUnchecked(hash, CTxMemPoolEntry(tx, 11, GetTime(), 111.0, 11));
     tx.vin[0].prevout.hash = hash;
     tx.vin.resize(2);
     tx.vin[1].scriptSig = CScript() << OP_1;
@@ -146,7 +146,7 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
     tx.vin[1].prevout.n = 0;
     tx.vout[0].nValue = 5900000000LL;
     hash = tx.GetHash();
-    mempool.addUnchecked(hash, tx);
+    mempool.addUnchecked(hash, CTxMemPoolEntry(tx, 11, GetTime(), 111.0, 11));
     BOOST_CHECK(pblocktemplate = CreateNewBlockWithKey(reservekey));
     delete pblocktemplate;
     mempool.clear();
@@ -157,7 +157,7 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
     tx.vin[0].scriptSig = CScript() << OP_0 << OP_1;
     tx.vout[0].nValue = 0;
     hash = tx.GetHash();
-    mempool.addUnchecked(hash, tx);
+    mempool.addUnchecked(hash, CTxMemPoolEntry(tx, 11, GetTime(), 111.0, 11));
     BOOST_CHECK(pblocktemplate = CreateNewBlockWithKey(reservekey));
     delete pblocktemplate;
     mempool.clear();
@@ -170,12 +170,12 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
     script = CScript() << OP_0;
     tx.vout[0].scriptPubKey.SetDestination(script.GetID());
     hash = tx.GetHash();
-    mempool.addUnchecked(hash, tx);
+    mempool.addUnchecked(hash, CTxMemPoolEntry(tx, 11, GetTime(), 111.0, 11));
     tx.vin[0].prevout.hash = hash;
     tx.vin[0].scriptSig = CScript() << (std::vector<unsigned char>)script;
     tx.vout[0].nValue -= 1000000;
     hash = tx.GetHash();
-    mempool.addUnchecked(hash,tx);
+    mempool.addUnchecked(hash, CTxMemPoolEntry(tx, 11, GetTime(), 111.0, 11));
     BOOST_CHECK(pblocktemplate = CreateNewBlockWithKey(reservekey));
     delete pblocktemplate;
     mempool.clear();
@@ -186,10 +186,10 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
     tx.vout[0].nValue = 4900000000LL;
     tx.vout[0].scriptPubKey = CScript() << OP_1;
     hash = tx.GetHash();
-    mempool.addUnchecked(hash, tx);
+    mempool.addUnchecked(hash, CTxMemPoolEntry(tx, 11, GetTime(), 111.0, 11));
     tx.vout[0].scriptPubKey = CScript() << OP_2;
     hash = tx.GetHash();
-    mempool.addUnchecked(hash, tx);
+    mempool.addUnchecked(hash, CTxMemPoolEntry(tx, 11, GetTime(), 111.0, 11));
     BOOST_CHECK(pblocktemplate = CreateNewBlockWithKey(reservekey));
     delete pblocktemplate;
     mempool.clear();

src/txmempool.cpp

@@ -8,6 +8,33 @@
 
 using namespace std;
 
+CTxMemPoolEntry::CTxMemPoolEntry()
+{
+    nHeight = MEMPOOL_HEIGHT;
+}
+
+CTxMemPoolEntry::CTxMemPoolEntry(const CTransaction& _tx, int64_t _nFee,
+                                 int64_t _nTime, double _dPriority,
+                                 unsigned int _nHeight):
+    tx(_tx), nFee(_nFee), nTime(_nTime), dPriority(_dPriority), nHeight(_nHeight)
+{
+    nTxSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION);
+}
+
+CTxMemPoolEntry::CTxMemPoolEntry(const CTxMemPoolEntry& other)
+{
+    *this = other;
+}
+
+double
+CTxMemPoolEntry::GetPriority(unsigned int currentHeight) const
+{
+    int64_t nValueIn = tx.GetValueOut()+nFee;
+    double deltaPriority = ((double)(currentHeight-nHeight)*nValueIn)/nTxSize;
+    double dResult = dPriority + deltaPriority;
+    return dResult;
+}
+
 CTxMemPool::CTxMemPool()
 {
     // Sanity checks off by default for performance, because otherwise
@@ -42,16 +69,17 @@ void CTxMemPool::AddTransactionsUpdated(unsigned int n)
 }
 
 
-bool CTxMemPool::addUnchecked(const uint256& hash, const CTransaction &tx)
+bool CTxMemPool::addUnchecked(const uint256& hash, const CTxMemPoolEntry &entry)
 {
     // Add to memory pool without checking anything.
     // Used by main.cpp AcceptToMemoryPool(), which DOES do
     // all the appropriate checks.
     LOCK(cs);
     {
-        mapTx[hash] = tx;
+        mapTx[hash] = entry;
+        const CTransaction& tx = mapTx[hash].GetTx();
         for (unsigned int i = 0; i < tx.vin.size(); i++)
-            mapNextTx[tx.vin[i].prevout] = CInPoint(&mapTx[hash], i);
+            mapNextTx[tx.vin[i].prevout] = CInPoint(&tx, i);
         nTransactionsUpdated++;
     }
     return true;
@@ -113,13 +141,15 @@ void CTxMemPool::check(CCoinsViewCache *pcoins) const
     LogPrint("mempool", "Checking mempool with %u transactions and %u inputs\n", (unsigned int)mapTx.size(), (unsigned int)mapNextTx.size());
 
     LOCK(cs);
-    for (std::map<uint256, CTransaction>::const_iterator it = mapTx.begin(); it != mapTx.end(); it++) {
+    for (std::map<uint256, CTxMemPoolEntry>::const_iterator it = mapTx.begin(); it != mapTx.end(); it++) {
         unsigned int i = 0;
-        BOOST_FOREACH(const CTxIn &txin, it->second.vin) {
+        const CTransaction& tx = it->second.GetTx();
+        BOOST_FOREACH(const CTxIn &txin, tx.vin) {
             // Check that every mempool transaction's inputs refer to available coins, or other mempool tx's.
-            std::map<uint256, CTransaction>::const_iterator it2 = mapTx.find(txin.prevout.hash);
+            std::map<uint256, CTxMemPoolEntry>::const_iterator it2 = mapTx.find(txin.prevout.hash);
             if (it2 != mapTx.end()) {
-                assert(it2->second.vout.size() > txin.prevout.n && !it2->second.vout[txin.prevout.n].IsNull());
+                const CTransaction& tx2 = it2->second.GetTx();
+                assert(tx2.vout.size() > txin.prevout.n && !tx2.vout[txin.prevout.n].IsNull());
             } else {
                 CCoins &coins = pcoins->GetCoins(txin.prevout.hash);
                 assert(coins.IsAvailable(txin.prevout.n));
@@ -127,37 +157,38 @@ void CTxMemPool::check(CCoinsViewCache *pcoins) const
             // Check whether its inputs are marked in mapNextTx.
             std::map<COutPoint, CInPoint>::const_iterator it3 = mapNextTx.find(txin.prevout);
             assert(it3 != mapNextTx.end());
-            assert(it3->second.ptx == &it->second);
+            assert(it3->second.ptx == &tx);
             assert(it3->second.n == i);
             i++;
         }
     }
     for (std::map<COutPoint, CInPoint>::const_iterator it = mapNextTx.begin(); it != mapNextTx.end(); it++) {
         uint256 hash = it->second.ptx->GetHash();
-        std::map<uint256, CTransaction>::const_iterator it2 = mapTx.find(hash);
+        map<uint256, CTxMemPoolEntry>::const_iterator it2 = mapTx.find(hash);
+        const CTransaction& tx = it2->second.GetTx();
         assert(it2 != mapTx.end());
-        assert(&it2->second == it->second.ptx);
-        assert(it2->second.vin.size() > it->second.n);
+        assert(&tx == it->second.ptx);
+        assert(tx.vin.size() > it->second.n);
         assert(it->first == it->second.ptx->vin[it->second.n].prevout);
     }
 }
 
-void CTxMemPool::queryHashes(std::vector<uint256>& vtxid)
+void CTxMemPool::queryHashes(vector<uint256>& vtxid)
 {
     vtxid.clear();
 
     LOCK(cs);
     vtxid.reserve(mapTx.size());
-    for (map<uint256, CTransaction>::iterator mi = mapTx.begin(); mi != mapTx.end(); ++mi)
+    for (map<uint256, CTxMemPoolEntry>::iterator mi = mapTx.begin(); mi != mapTx.end(); ++mi)
         vtxid.push_back((*mi).first);
 }
 
 bool CTxMemPool::lookup(uint256 hash, CTransaction& result) const
 {
     LOCK(cs);
-    std::map<uint256, CTransaction>::const_iterator i = mapTx.find(hash);
+    map<uint256, CTxMemPoolEntry>::const_iterator i = mapTx.find(hash);
     if (i == mapTx.end()) return false;
-    result = i->second;
+    result = i->second.GetTx();
     return true;
 }
 

src/txmempool.h

@@ -12,6 +12,33 @@
 /** Fake height value used in CCoins to signify they are only in the memory pool (since 0.8) */
 static const unsigned int MEMPOOL_HEIGHT = 0x7FFFFFFF;
 
+/*
+ * CTxMemPool stores these:
+ */
+class CTxMemPoolEntry
+{
+private:
+    CTransaction tx;
+    int64_t nFee; // Cached to avoid expensive parent-transaction lookups
+    size_t nTxSize; // ... and avoid recomputing tx size
+    int64_t nTime; // Local time when entering the mempool
+    double dPriority; // Priority when entering the mempool
+    unsigned int nHeight; // Chain height when entering the mempool
+
+public:
+    CTxMemPoolEntry(const CTransaction& _tx, int64_t _nFee,
+                    int64_t _nTime, double _dPriority, unsigned int _nHeight);
+    CTxMemPoolEntry();
+    CTxMemPoolEntry(const CTxMemPoolEntry& other);
+
+    const CTransaction& GetTx() const { return this->tx; }
+    double GetPriority(unsigned int currentHeight) const;
+    int64_t GetFee() const { return nFee; }
+    size_t GetTxSize() const { return nTxSize; }
+    int64_t GetTime() const { return nTime; }
+    unsigned int GetHeight() const { return nHeight; }
+};
+
 /*
  * CTxMemPool stores valid-according-to-the-current-best-chain
  * transactions that may be included in the next block.
@@ -30,7 +57,7 @@ private:
 
 public:
     mutable CCriticalSection cs;
-    std::map<uint256, CTransaction> mapTx;
+    std::map<uint256, CTxMemPoolEntry> mapTx;
     std::map<COutPoint, CInPoint> mapNextTx;
 
     CTxMemPool();
@@ -44,7 +71,7 @@ public:
     void check(CCoinsViewCache *pcoins) const;
     void setSanityCheck(bool _fSanityCheck) { fSanityCheck = _fSanityCheck; }
 
-    bool addUnchecked(const uint256& hash, const CTransaction &tx);
+    bool addUnchecked(const uint256& hash, const CTxMemPoolEntry &entry);
     bool remove(const CTransaction &tx, bool fRecursive = false);
     bool removeConflicts(const CTransaction &tx);
     void clear();

src/wallet.cpp

@@ -655,7 +655,7 @@ void CWalletTx::GetAmounts(list<pair<CTxDestination, int64_t> >& listReceived,
     int64_t nDebit = GetDebit();
     if (nDebit > 0) // debit>0 means we signed/sent this transaction
     {
-        int64_t nValueOut = GetValueOut(*this);
+        int64_t nValueOut = GetValueOut();
         nFee = nDebit - nValueOut;
     }
 
@@ -1342,15 +1342,7 @@ bool CWallet::CreateTransaction(const vector<pair<CScript, int64_t> >& vecSend,
                     strFailReason = _("Transaction too large");
                     return false;
                 }
-                unsigned int nTxSizeMod = nBytes;
-                // See miner.c's dPriority logic for the matching network-node side code.
-                BOOST_FOREACH(const CTxIn& txin, (*(CTransaction*)&wtxNew).vin)
-                {
-                    unsigned int offset = 41U + min(110U, (unsigned int)txin.scriptSig.size());
-                    if (nTxSizeMod > offset)
-                        nTxSizeMod -= offset;
-                }
-                dPriority /= nTxSizeMod;
+                dPriority = wtxNew.ComputePriority(dPriority, nBytes);
 
                 // Check that enough fee is included
                 int64_t nPayFee = nTransactionFee * (1 + (int64_t)nBytes / 1000);