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Spent per txout
Change some internal data structures to keep track of spentness of each wallet transaction output separately, to support partially-spent transactions: * an update to the data structures (vfSpent in CWalletTx instead of fSpent) * a backward-compatible update to the wallet disk format. Old clients reading back an updated wallet will ignore partially spent transactions when creating new ones, and may report a wrong balance, though. * some helper functions (CWalletTx: IsSpent, MarkSpent, MarkDirty to reset cached values, GetAvailableCredit which only counts unredeemed outputs)
This commit is contained in:
Pieter Wuille
parent
b7ebc662eb
commit
335e878be8
66
main.cpp
66
main.cpp
@ -136,11 +136,7 @@ bool AddToWallet(const CWalletTx& wtxIn)
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wtx.fFromMe = wtxIn.fFromMe;
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fUpdated = true;
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}
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if (wtxIn.fSpent && wtxIn.fSpent != wtx.fSpent)
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{
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wtx.fSpent = wtxIn.fSpent;
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fUpdated = true;
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}
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fUpdated |= wtx.UpdateSpent(wtxIn.vfSpent);
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}
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//// debug print
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@ -221,10 +217,10 @@ void WalletUpdateSpent(const COutPoint& prevout)
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if (mi != mapWallet.end())
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{
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CWalletTx& wtx = (*mi).second;
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if (!wtx.fSpent && wtx.vout[prevout.n].IsMine())
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if (!wtx.IsSpent(prevout.n) && wtx.vout[prevout.n].IsMine())
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{
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printf("WalletUpdateSpent found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
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wtx.fSpent = true;
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wtx.MarkSpent(prevout.n);
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wtx.WriteToDisk();
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vWalletUpdated.push_back(prevout.hash);
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}
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@ -939,34 +935,34 @@ void ReacceptWalletTransactions()
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foreach(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
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{
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CWalletTx& wtx = item.second;
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if (wtx.fSpent && wtx.IsCoinBase())
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if (wtx.IsCoinBase() && wtx.IsSpent(0))
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continue;
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CTxIndex txindex;
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bool fUpdated = false;
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if (txdb.ReadTxIndex(wtx.GetHash(), txindex))
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{
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// Update fSpent if a tx got spent somewhere else by a copy of wallet.dat
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if (!wtx.fSpent)
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if (txindex.vSpent.size() != wtx.vout.size())
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{
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if (txindex.vSpent.size() != wtx.vout.size())
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printf("ERROR: ReacceptWalletTransactions() : txindex.vSpent.size() %d != wtx.vout.size() %d\n", txindex.vSpent.size(), wtx.vout.size());
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continue;
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}
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for (int i = 0; i < txindex.vSpent.size(); i++)
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{
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if (!txindex.vSpent[i].IsNull() && wtx.vout[i].IsMine())
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{
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printf("ERROR: ReacceptWalletTransactions() : txindex.vSpent.size() %d != wtx.vout.size() %d\n", txindex.vSpent.size(), wtx.vout.size());
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continue;
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}
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for (int i = 0; i < txindex.vSpent.size(); i++)
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{
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if (!txindex.vSpent[i].IsNull() && wtx.vout[i].IsMine())
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{
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wtx.fSpent = true;
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vMissingTx.push_back(txindex.vSpent[i]);
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}
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}
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if (wtx.fSpent)
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{
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printf("ReacceptWalletTransactions found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
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wtx.WriteToDisk();
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wtx.MarkSpent(i);
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fUpdated = true;
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vMissingTx.push_back(txindex.vSpent[i]);
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}
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}
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if (fUpdated)
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{
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printf("ReacceptWalletTransactions found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
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wtx.MarkDirty();
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wtx.WriteToDisk();
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}
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}
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else
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{
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@ -3732,9 +3728,9 @@ int64 GetBalance()
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for (map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
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{
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CWalletTx* pcoin = &(*it).second;
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if (!pcoin->IsFinal() || pcoin->fSpent || !pcoin->IsConfirmed())
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if (!pcoin->IsFinal() || !pcoin->IsConfirmed())
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continue;
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nTotal += pcoin->GetCredit();
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nTotal += pcoin->GetAvailableCredit();
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}
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}
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@ -3763,14 +3759,17 @@ bool SelectCoinsMinConf(int64 nTargetValue, int nConfMine, int nConfTheirs, set<
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foreach(CWalletTx* pcoin, vCoins)
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{
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if (!pcoin->IsFinal() || pcoin->fSpent || !pcoin->IsConfirmed())
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if (!pcoin->IsFinal() || !pcoin->IsConfirmed())
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continue;
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if (pcoin->IsCoinBase() && pcoin->GetBlocksToMaturity() > 0)
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continue;
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int nDepth = pcoin->GetDepthInMainChain();
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if (nDepth < (pcoin->IsFromMe() ? nConfMine : nConfTheirs))
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continue;
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int64 n = pcoin->GetCredit();
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int64 n = pcoin->GetAvailableCredit();
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if (n <= 0)
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continue;
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if (n == nTargetValue)
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@ -4017,12 +4016,11 @@ bool CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey)
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// Mark old coins as spent
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set<CWalletTx*> setCoins;
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foreach(const CTxIn& txin, wtxNew.vin)
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setCoins.insert(&mapWallet[txin.prevout.hash]);
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foreach(CWalletTx* pcoin, setCoins)
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{
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pcoin->fSpent = true;
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pcoin->WriteToDisk();
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vWalletUpdated.push_back(pcoin->GetHash());
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CWalletTx &pcoin = mapWallet[txin.prevout.hash];
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pcoin.MarkSpent(txin.prevout.n);
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pcoin.WriteToDisk();
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vWalletUpdated.push_back(pcoin.GetHash());
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}
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}
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124
main.h
124
main.h
@ -738,6 +738,7 @@ public:
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fMerkleVerified = false;
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}
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IMPLEMENT_SERIALIZE
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(
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nSerSize += SerReadWrite(s, *(CTransaction*)this, nType, nVersion, ser_action);
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@ -774,15 +775,17 @@ public:
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unsigned int fTimeReceivedIsTxTime;
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unsigned int nTimeReceived; // time received by this node
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char fFromMe;
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char fSpent;
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string strFromAccount;
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vector<char> vfSpent;
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// memory only
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mutable char fDebitCached;
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mutable char fCreditCached;
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mutable char fAvailableCreditCached;
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mutable char fChangeCached;
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mutable int64 nDebitCached;
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mutable int64 nCreditCached;
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mutable int64 nAvailableCreditCached;
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mutable int64 nChangeCached;
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// memory only UI hints
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@ -814,13 +817,15 @@ public:
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fTimeReceivedIsTxTime = false;
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nTimeReceived = 0;
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fFromMe = false;
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fSpent = false;
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strFromAccount.clear();
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vfSpent.clear();
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fDebitCached = false;
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fCreditCached = false;
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fAvailableCreditCached = false;
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fChangeCached = false;
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nDebitCached = 0;
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nCreditCached = 0;
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nAvailableCreditCached = 0;
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nChangeCached = 0;
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nTimeDisplayed = 0;
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nLinesDisplayed = 0;
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@ -832,22 +837,96 @@ public:
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CWalletTx* pthis = const_cast<CWalletTx*>(this);
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if (fRead)
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pthis->Init();
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nSerSize += SerReadWrite(s, *(CMerkleTx*)this, nType, nVersion, ser_action);
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char fSpent = false;
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if (!fRead)
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{
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pthis->mapValue["fromaccount"] = pthis->strFromAccount;
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string str;
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foreach(char f, vfSpent)
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{
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str += (f ? '1' : '0');
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if (f)
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fSpent = true;
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}
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pthis->mapValue["spent"] = str;
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}
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nSerSize += SerReadWrite(s, *(CMerkleTx*)this, nType, nVersion,ser_action);
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READWRITE(vtxPrev);
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pthis->mapValue["fromaccount"] = pthis->strFromAccount;
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READWRITE(mapValue);
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pthis->strFromAccount = pthis->mapValue["fromaccount"];
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pthis->mapValue.erase("fromaccount");
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pthis->mapValue.erase("version");
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READWRITE(vOrderForm);
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READWRITE(fTimeReceivedIsTxTime);
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READWRITE(nTimeReceived);
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READWRITE(fFromMe);
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READWRITE(fSpent);
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if (fRead)
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{
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pthis->strFromAccount = pthis->mapValue["fromaccount"];
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if (mapValue.count("spent"))
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foreach(char c, pthis->mapValue["spent"])
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pthis->vfSpent.push_back(c != '0');
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else
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pthis->vfSpent.assign(vout.size(), fSpent);
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}
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pthis->mapValue.erase("fromaccount");
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pthis->mapValue.erase("version");
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pthis->mapValue.erase("spent");
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)
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// marks certain txout's as spent
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// returns true if any update took place
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bool UpdateSpent(const vector<char>& vfNewSpent)
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{
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bool fReturn = false;
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for (int i=0; i < vfNewSpent.size(); i++)
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{
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if (i == vfSpent.size())
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break;
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if (vfNewSpent[i] && !vfSpent[i])
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{
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vfSpent[i] = true;
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fReturn = true;
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fAvailableCreditCached = false;
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}
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}
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return fReturn;
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}
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void MarkDirty()
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{
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fCreditCached = false;
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fAvailableCreditCached = false;
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fDebitCached = false;
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fChangeCached = false;
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}
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void MarkSpent(unsigned int nOut)
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{
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if (nOut >= vout.size())
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throw runtime_error("CWalletTx::MarkSpent() : nOut out of range");
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vfSpent.resize(vout.size());
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if (!vfSpent[nOut])
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{
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vfSpent[nOut] = true;
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fAvailableCreditCached = false;
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}
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}
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bool IsSpent(unsigned int nOut) const
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{
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if (nOut >= vout.size())
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throw runtime_error("CWalletTx::IsSpent() : nOut out of range");
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if (nOut >= vfSpent.size())
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return false;
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return (!!vfSpent[nOut]);
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}
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int64 GetDebit() const
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{
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if (vin.empty())
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@ -873,6 +952,33 @@ public:
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return nCreditCached;
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}
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int64 GetAvailableCredit(bool fUseCache=true) const
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{
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// Must wait until coinbase is safely deep enough in the chain before valuing it
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if (IsCoinBase() && GetBlocksToMaturity() > 0)
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return 0;
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if (fUseCache && fAvailableCreditCached)
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return nAvailableCreditCached;
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int64 nCredit = 0;
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for (int i = 0; i < vout.size(); i++)
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{
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if (!IsSpent(i))
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{
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const CTxOut &txout = vout[i];
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nCredit += txout.GetCredit();
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if (!MoneyRange(nCredit))
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throw runtime_error("CWalletTx::GetAvailableCredit() : value out of range");
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}
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}
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nAvailableCreditCached = nCredit;
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fAvailableCreditCached = true;
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return nCredit;
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}
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int64 GetChange() const
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{
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if (fChangeCached)
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