public override Coins AccessCoins(uint256 txId)
{
if (_CurrentPrefetch == null)
{
return(_Inner.AccessCoins(txId));
}
return(_CurrentPrefetch.GetAwaiter().GetResult().AccessCoins(txId));
}
private void CheckIntputs(Transaction tx, CoinView inputs, int nSpendHeight)
{
if (!inputs.HaveInputs(tx))
{
ConsensusErrors.BadTransactionMissingInput.Throw();
}
Money nValueIn = Money.Zero;
Money nFees = Money.Zero;
for (int i = 0; i < tx.Inputs.Count; i++)
{
var prevout = tx.Inputs[i].PrevOut;
var coins = inputs.AccessCoins(prevout.Hash);
// If prev is coinbase, check that it's matured
if (coins.Coinbase)
{
if (nSpendHeight - coins.Height < COINBASE_MATURITY)
{
ConsensusErrors.BadTransactionPrematureCoinbaseSpending.Throw();
}
}
// Check for negative or overflow input values
nValueIn += coins.TryGetOutput(prevout.N).Value;
if (!MoneyRange(coins.TryGetOutput(prevout.N).Value) || !MoneyRange(nValueIn))
{
ConsensusErrors.BadTransactionInputValueOutOfRange.Throw();
}
}
if (nValueIn < tx.TotalOut)
{
ConsensusErrors.BadTransactionInBelowOut.Throw();
}
// Tally transaction fees
Money nTxFee = nValueIn - tx.TotalOut;
if (nTxFee < 0)
{
ConsensusErrors.BadTransactionNegativeFee.Throw();
}
nFees += nTxFee;
if (!MoneyRange(nFees))
{
ConsensusErrors.BadTransactionFeeOutOfRange.Throw();
}
}
public override Coins AccessCoins(uint256 txId)
{
if (_NotFound.Contains(txId))
{
PerformanceCounter.AddHitCount(1);
return(null);
}
var cached = _Cache.AccessCoins(txId);
if (cached != null)
{
PerformanceCounter.AddHitCount(1);
return(cached);
}
PerformanceCounter.AddMissCount(1);
var coin = _Inner.AccessCoins(txId);
if (ReadThrough)
{
AddToCache(txId, coin);
}
return(coin);
}
