RanchiMall/FLO-wallet-core
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FIFO selection wallet.cpp

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This wallet.cpp version selects the UTXOs based on FIFO i.e, the coins received first will be spent first
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saizsassin 2018-05-10 15:33:37 +05:30 committed by GitHub
parent 51293f733e
commit 235f78b0c1
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1 changed files with 23 additions and 21 deletions
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44
src/wallet/wallet.cpp
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@ -2458,9 +2458,10 @@ bool CWallet::SelectCoinsMinConf(const CAmount& nTargetValue, const int nConfMin
bool CWallet::SelectCoins(const std::vector<COutput>& vAvailableCoins, const CAmount& nTargetValue, std::set<CInputCoin>& setCoinsRet, CAmount& nValueRet, const CCoinControl* coinControl) const bool CWallet::SelectCoins(const std::vector<COutput>& vAvailableCoins, const CAmount& nTargetValue, std::set<CInputCoin>& setCoinsRet, CAmount& nValueRet, const CCoinControl* coinControl) const
{ {
/*This selectCoins function selects the coins (UTXOs) in FIFO order i.e, the coins that is received first will be sent to spending first*/ /*This selectCoins function selects the coins (UTXOs) in FIFO order i.e, the coins that is received first will be sent to spending first*/
//get the received time of each coin and store in set time (using set because the content will be automatically stored in ascending order of the data) //get the received time of each coin and store in set time (using set because the content will be automatically stored in ascending order of the data)
std::vector<COutput> vCoinsTmp(vAvailableCoins); std::vector<COutput> vCoinsTmp(vAvailableCoins);
std::vector<COutput>::iterator it; std::vector<COutput>::iterator it;
std::set<unsigned int> time; std::set<unsigned int> time;
@ -2489,26 +2490,26 @@ bool CWallet::SelectCoins(const std::vector<COutput>& vAvailableCoins, const CAm
} }
// calculate value from preset inputs and store them in PresetCoins set // calculate value from preset inputs and store them in PresetCoins set
std::vector<CInputCoin> setPresetCoins; std::vector<CInputCoin> setPresetCoins;
CAmount nValueFromPresetInputs = 0; CAmount nValueFromPresetInputs = 0;
setPresetCoins.clear(); setPresetCoins.clear();
std::vector<COutPoint> vPresetInputs; std::vector<COutPoint> vPresetInputs;
if (coinControl) if (coinControl)
coinControl->ListSelected(vPresetInputs); coinControl->ListSelected(vPresetInputs);
for (const COutPoint& outpoint : vPresetInputs) for (const COutPoint& outpoint : vPresetInputs)
{ {
std::map<uint256, CWalletTx>::const_iterator it = mapWallet.find(outpoint.hash); std::map<uint256, CWalletTx>::const_iterator it = mapWallet.find(outpoint.hash);
if (it != mapWallet.end()) if (it != mapWallet.end())
{ {
const CWalletTx* pcoin = &it->second; const CWalletTx* pcoin = &it->second;
// Clearly invalid input, fail // Clearly invalid input, fail
if (pcoin->tx->vout.size() <= outpoint.n) if (pcoin->tx->vout.size() <= outpoint.n)
return false; return false;
nValueFromPresetInputs += pcoin->tx->vout[outpoint.n].nValue; nValueFromPresetInputs += pcoin->tx->vout[outpoint.n].nValue;
setPresetCoins.push_back(CInputCoin(pcoin, outpoint.n)); setPresetCoins.push_back(CInputCoin(pcoin, outpoint.n));
} else } else
return false; // TODO: Allow non-wallet inputs return false; // TODO: Allow non-wallet inputs
} }
@ -2521,13 +2522,13 @@ bool CWallet::SelectCoins(const std::vector<COutput>& vAvailableCoins, const CAm
++it; ++it;
} }
//insert all preset Inputs to the setCoinsRet (returning set of selected utxo) //insert all preset Inputs to the setCoinsRet (returning set of selected utxo)
setCoinsRet.clear(); setCoinsRet.clear();
setCoinsRet.insert(setPresetCoins.begin(), setPresetCoins.end()); setCoinsRet.insert(setPresetCoins.begin(), setPresetCoins.end());
nValueRet = nValueFromPresetInputs; nValueRet = nValueFromPresetInputs;
//return true if total preset input value is greater than required amount //return true if total preset input value is greater than required amount
if (nValueFromPresetInputs >= nTargetValue) if (nValueFromPresetInputs >= nTargetValue)
return true; return true;
//select UTXOs from vCoins and insert into setCoinsRet (returning set of selected utxo) until required amount is obtained //select UTXOs from vCoins and insert into setCoinsRet (returning set of selected utxo) until required amount is obtained
@ -4372,3 +4373,4 @@ bool CMerkleTx::AcceptToMemoryPool(const CAmount& nAbsurdFee, CValidationState&
{ {
return ::AcceptToMemoryPool(mempool, state, tx, true, nullptr, nullptr, false, nAbsurdFee); return ::AcceptToMemoryPool(mempool, state, tx, true, nullptr, nullptr, false, nAbsurdFee);
} }