private IEthashDataSet GetOrAddCache(uint epoch, bool precompute = true)
{
IEthashDataSet dataSet = _cacheCache.Get(epoch);
if (dataSet == null)
{
uint cacheSize = GetCacheSize(epoch);
Keccak seed = GetSeedHash(epoch);
if (_logger.IsDebug)
{
_logger.Debug($"Building cache for epoch {epoch}");
}
_cacheStopwatch.Restart();
dataSet = new EthashCache(cacheSize, seed.Bytes);
_cacheStopwatch.Stop();
if (_logger.IsDebug)
{
_logger.Debug($"Cache for epoch {epoch} built in {_cacheStopwatch.ElapsedMilliseconds}ms");
}
_cacheCache.Set(epoch, dataSet);
}
uint epochToPrecompute = epoch + 1;
if (precompute && _epochsRequested.TryAdd(epochToPrecompute, null))
{
if (_logger.IsDebug)
{
_logger.Debug($"Asking to precompute epoch {epochToPrecompute}");
}
PrecomputeCache(epochToPrecompute).ContinueWith(t =>
{
if (t.IsFaulted)
{
if (_logger.IsError)
{
_logger.Error($"Precompute failure at epoch {epochToPrecompute}");
}
}
else
{
if (_logger.IsDebug)
{
_logger.Debug($"Epoch precompute success at {epochToPrecompute}");
}
}
});
}
return(dataSet);
}
private Task <IEthashDataSet> BuildCache(uint epoch)
{
return(Task.Run(() =>
{
uint cacheSize = GetCacheSize(epoch);
Keccak seed = GetSeedHash(epoch);
if (_logger.IsInfo)
{
_logger.Info($"Building ethash cache for epoch {epoch}");
}
_cacheStopwatch.Restart();
IEthashDataSet dataSet = new EthashCache(cacheSize, seed.Bytes);
_cacheStopwatch.Stop();
if (_logger.IsInfo)
{
_logger.Info($"Cache for epoch {epoch} with size {cacheSize} nd seed {seed.Bytes.ToHexString()} built in {_cacheStopwatch.ElapsedMilliseconds}ms");
}
return dataSet;
}));
}
// TODO: in a separate thread
private IEthashDataSet GetOrAddCache(uint epoch)
{
IEthashDataSet dataSet = _cacheCache.Get(epoch);
if (dataSet == null)
{
uint cacheSize = GetCacheSize(epoch);
Keccak seed = GetSeedHash(epoch);
if (_logger.IsInfo)
{
_logger.Info($"Building cache for epoch {epoch}");
}
_cacheStopwatch.Restart();
dataSet = new EthashCache(cacheSize, seed.Bytes);
_cacheStopwatch.Stop();
if (_logger.IsInfo)
{
_logger.Info($"Cache for epoch {epoch} built in {_cacheStopwatch.ElapsedMilliseconds}ms");
}
_cacheCache.Set(epoch, dataSet);
}
return(dataSet);
}