private ICoinsView RemoveNoLock(SmartCoin coin)
{
var coinsToRemove = DescendantOfAndSelfNoLock(coin);
foreach (var toRemove in coinsToRemove)
{
if (!Coins.Remove(toRemove))
{
SpentCoins.Remove(toRemove);
}
var removedCoinOutPoint = toRemove.OutPoint;
// If we can find it in our outpoint to coins cache.
if (TryGetSpenderSmartCoinsByOutPointNoLock(removedCoinOutPoint, out var coinsByOutPoint))
{
// Go through all the coins of that cache where the coin is the coin we are wishing to remove.
foreach (var coinByOutPoint in coinsByOutPoint.Where(x => x == toRemove))
{
// Remove the coin from the set, and if the set becomes empty as a consequence remove the key too.
if (CoinsByOutPoint[removedCoinOutPoint].Remove(coinByOutPoint) && !CoinsByOutPoint[removedCoinOutPoint].Any())
{
CoinsByOutPoint.Remove(removedCoinOutPoint);
}
}
}
}
InvalidateSnapshot = true;
return(coinsToRemove);
}
public bool TryAdd(SmartCoin coin)
{
var added = false;
lock (Lock)
{
if (!SpentCoins.Contains(coin))
{
added = Coins.Add(coin);
if (added)
{
if (ClustersByScriptPubKey.TryGetValue(coin.ScriptPubKey, out var cluster))
{
coin.Cluster = cluster;
}
else
{
ClustersByScriptPubKey.Add(coin.ScriptPubKey, coin.Cluster);
}
foreach (var spentOutPoint in coin.SpentOutputs)
{
var outPoint = spentOutPoint;
var newCoinSet = new HashSet <SmartCoin> {
coin
};
// If we don't succeed to add a new entry to the dictionary.
if (!CoinsByOutPoint.TryAdd(outPoint, newCoinSet))
{
var previousCoinTxId = CoinsByOutPoint[outPoint].First().TransactionId;
// Then check if we're in the same transaction as the previous coins in the dictionary are.
if (coin.TransactionId == previousCoinTxId)
{
// If we are in the same transaction, then just add it to value set.
CoinsByOutPoint[outPoint].Add(coin);
}
else
{
// If we aren't in the same transaction, then it's a conflict, so replace the old set with the new one.
CoinsByOutPoint[outPoint] = newCoinSet;
}
}
}
InvalidateSnapshot = true;
}
}
}
return(added);
}
private bool TryGetSpenderSmartCoinsByOutPointNoLock(OutPoint outPoint, out HashSet <SmartCoin> coins)
{
return(CoinsByOutPoint.TryGetValue(outPoint, out coins));
}
