public void MineBlock(double difficulty)
{
if (!_isMining)
{
Difficulty = difficulty;
_isMining = true;
var totalHashesCounter = 0;
DateTime startTime = DateTime.Now;
Task[] miningTasks = new Task[1];
//#if DEBUG
// Task[] miningTasks = new Task[1];
//#else
// Task[] miningTasks = new Task[Environment.ProcessorCount];
//#endif
var unsigned = new byte[] { 0, 0 };
for (int i = 0; i < miningTasks.Length; i++)
{
var startNonce = i;
miningTasks[i] = Task.Factory.StartNew(() =>
{
var taskHash = GenerateHash(startNonce);
while (difficulty < BigInteger.Log(new BigInteger(taskHash.Concat(unsigned).ToArray())))
{
if (!_isMining)
{
taskHash = null;
break;
}
startNonce = startNonce + miningTasks.Length;
taskHash = GenerateHash(startNonce);
totalHashesCounter++;
if (totalHashesCounter % 200000 == 0)
{
var currentElapsedTime = DateTime.Now - startTime;
BlockchainConsole.WriteLive($"MINING BLOCK {Height} - ELAPSED TIME: {currentElapsedTime.TotalSeconds} Seconds, DIFFICULTY: {difficulty}, HASH RATE: {Convert.ToInt64(totalHashesCounter / currentElapsedTime.TotalSeconds)}/Seconds");
}
}
if (taskHash != null)
{
Nonce = startNonce;
_isMining = false;
}
});
}
Task.WaitAll(miningTasks);
var elapsedTime = DateTime.Now - startTime;
BlockchainConsole.WriteLive(string.Empty);
BlockchainConsole.WriteLine($"ELAPSED TIME: {elapsedTime.TotalSeconds} Seconds, DIFFICULTY: {difficulty}, HASH RATE: {Convert.ToInt64(totalHashesCounter / elapsedTime.TotalSeconds)}/Seconds ", ConsoleEventType.Elapsed);
}
}
private void miningBlocks()
{
while (_isMining)
{
if (_networkSynchronizer.IsSynced)
{
var lastBlock = LastBlock();
lock (_memPool)
{
var miningAddress = Wallet.NewAddress();
using (BlockchainDbContext db = new BlockchainDbContext())
{
var mempoolHashes = _memPool.Select(m => m.GenerateHash());
var existingTransactionsInBlockchain = db.Transactions.Where(t => mempoolHashes.Contains(t.Hash)).ToList();
existingTransactionsInBlockchain.ForEach(t => _memPool.Remove(_memPool.First(m => m.Hash == t.Hash)));
var transactionsInBlock = _memPool.OrderByDescending(t => t.TransactionFee).Take(100).ToList();
transactionsInBlock.Insert(0, new Transaction(null, Wallet, new[] { new Output(miningAddress.Key, MiningReward) }.ToList()));
_nextBlock = lastBlock == null ? new Block(1, null, transactionsInBlock) : new Block(lastBlock.Height + 1, HashHelper.ByteArrayToHexString(lastBlock.GenerateHash()), transactionsInBlock);
}
}
_nextBlock.MineBlock(CalculateDifficulty(_nextBlock));
if (AddBlock(_nextBlock))
{
BlockchainConsole.WriteLine($"MINED BLOCK: {_nextBlock}", ConsoleEventType.MINEDBLOCK);
}
else
{
BlockchainConsole.WriteLine($"MINING FAILED: {_nextBlock}", ConsoleEventType.MININGFAILED);
}
}
else
{
Task.Delay(500);
}
}
}