private uint256[] GetIdsToPrefetch(Block block, CacheCoinView cache, bool enforceBIP30)
{
List <uint256> ids = new List <uint256>(block.Transactions.Count + block.Transactions.Where(tx => !tx.IsCoinBase).SelectMany(txin => txin.Inputs).Count());
foreach (var tx in block.Transactions)
{
if (enforceBIP30)
{
var txId = tx.GetHash();
if (cache == null || !cache.Contains(txId))
{
ids.Add(txId);
}
}
if (!tx.IsCoinBase)
{
foreach (var input in tx.Inputs)
{
if (cache == null || !cache.Contains(input.PrevOut.Hash))
{
ids.Add(input.PrevOut.Hash);
}
}
}
}
return(ids.ToArray());
}
private static Task GetPrefetchingTask(CacheCoinView cache, ILookaheadBlockPuller lookaheadPuller, ConsensusFlags flags)
{
Task prefetching = Task.FromResult <bool>(true);
if (cache != null && lookaheadPuller != null)
{
var nextBlock = lookaheadPuller.TryGetLookahead(0);
if (nextBlock != null)
{
prefetching = Task.Run(() => cache.FetchCoins(GetIdsToFetch(nextBlock, flags.EnforceBIP30)));
}
}
return(prefetching);
}
