private Task FlushAsync()
{
_InnerCommitable.Clear();
_Commitable.Commit();
_Commitable.Clear();
var t = Task.Run(() =>
{
_InnerCommitable.Commit();
_LastFlush = DateTimeOffset.UtcNow;
});
_Commiting = t;
return(t);
}
/// <summary>
/// Pull blocks, validate them and update the UTXO Set
/// </summary>
/// <param name="utxo">UTXO Set</param>
/// <param name="puller">Block source</param>
/// <returns>Stream of validated blocks</returns>
public IEnumerable <Block> Run(CoinViewStack utxoStack, BlockPuller puller)
{
var utxo = utxoStack.Top;
var cache = utxoStack.Find <CacheCoinView>();
var lookaheadPuller = puller as ILookaheadBlockPuller;
puller.SetLocation(utxo.Tip);
ThresholdConditionCache bip9 = new ThresholdConditionCache(_ConsensusParams);
StopWatch watch = new StopWatch();
bool rejected = false;
while (true)
{
Block block = null;
while (true)
{
rejected = false;
try
{
using (watch.Start(o => PerformanceCounter.AddBlockFetchingTime(o)))
{
block = puller.NextBlock();
}
ChainedBlock next;
ContextInformation context;
ConsensusFlags flags;
using (watch.Start(o => PerformanceCounter.AddBlockProcessingTime(o)))
{
CheckBlockHeader(block.Header);
next = new ChainedBlock(block.Header, block.Header.GetHash(), utxo.Tip);
context = new ContextInformation(next, this._ConsensusParams);
ContextualCheckBlockHeader(block.Header, context);
var states = bip9.GetStates(utxo.Tip);
flags = new ConsensusFlags(next, states, _ConsensusParams);
ContextualCheckBlock(block, flags, context);
CheckBlock(block);
}
var commitable = new CommitableCoinView(next, utxo);
using (watch.Start(o => PerformanceCounter.AddUTXOFetchingTime(o)))
{
commitable.FetchCoins(GetIdsToFetch(block, flags.EnforceBIP30));
}
commitable.SetInner(NullCoinView.Instance);
Task prefetching = GetPrefetchingTask(cache, lookaheadPuller, flags);
using (watch.Start(o => PerformanceCounter.AddBlockProcessingTime(o)))
{
ExecuteBlock(block, next, flags, commitable, null);
}
using (watch.Start(o => PerformanceCounter.AddUTXOFetchingTime(o)))
{
prefetching.Wait();
commitable.Commit(utxo);
}
}
catch (ConsensusErrorException ex)
{
rejected = true;
if (ex.ConsensusError == ConsensusErrors.TimeTooNew)
{
puller.Reject(block, RejectionMode.Temporary);
}
else
{
puller.Reject(block, RejectionMode.Permanent);
}
}
if (!rejected)
{
yield return(block);
}
}
}
}
