private Task TryPrefetchAsync(ConsensusFlags flags)
{
Task prefetching = Task.FromResult <bool>(true);
if (UTXOSet is CachedCoinView)
{
var nextBlock = this.Puller.TryGetLookahead(0);
if (nextBlock != null)
{
prefetching = UTXOSet.FetchCoinsAsync(GetIdsToFetch(nextBlock, flags.EnforceBIP30));
}
}
return(prefetching);
}
public void AcceptBlock(BlockResult result)
{
ContextInformation context;
ConsensusFlags flags;
using (watch.Start(o => Validator.PerformanceCounter.AddBlockProcessingTime(o)))
{
Validator.CheckBlockHeader(result.Block.Header);
if (result.Block.Header.HashPrevBlock != Tip.HashBlock)
{
return; // reorg
}
result.ChainedBlock = new ChainedBlock(result.Block.Header, result.Block.Header.GetHash(), Tip);
result.ChainedBlock = Chain.GetBlock(result.ChainedBlock.HashBlock) ?? result.ChainedBlock;
//Liberate from memory the block created above if possible
context = new ContextInformation(result.ChainedBlock, Validator.ConsensusParams);
Validator.ContextualCheckBlockHeader(result.Block.Header, context);
flags = GetFlags(result.ChainedBlock);
Validator.ContextualCheckBlock(result.Block, flags, context);
Validator.CheckBlock(result.Block);
}
var set = new UnspentOutputSet();
using (watch.Start(o => Validator.PerformanceCounter.AddUTXOFetchingTime(o)))
{
var ids = GetIdsToFetch(result.Block, flags.EnforceBIP30);
var coins = UTXOSet.FetchCoinsAsync(ids).GetAwaiter().GetResult();
set.SetCoins(coins);
}
TryPrefetchAsync(flags);
using (watch.Start(o => Validator.PerformanceCounter.AddBlockProcessingTime(o)))
{
Validator.ExecuteBlock(result.Block, result.ChainedBlock, flags, set, null);
}
UTXOSet.SaveChangesAsync(set.GetCoins(UTXOSet), null, Tip.HashBlock, result.ChainedBlock.HashBlock);
_Tip = result.ChainedBlock;
}