public void ExecuteWrapper()
{
// C# way
if (ProgressTask == null || ProgressTask.Status == TaskStatus.RanToCompletion)
{
ProgressTask = CreateTask();
ProgressTask.Start();
}
else
{
CancelToken.Cancel();
ProgressTask.Wait();
object val = ProgressTask.Result;
ProgressTask = null;
}
// Android way
//if (Build.VERSION.SdkInt >= BuildVersionCodes.Honeycomb)
//{
// ExecuteOnExecutor(AsyncTask.ThreadPoolExecutor);
//}
//else
//{
// Execute();
//}
}
public void Stop()
{
if (CancelToken != null)
{
CancelToken.Cancel();
}
}
private void Cancel()
{
CancelToken?.Cancel();
CancelToken?.Dispose();
CancelToken = null;
WorkerTask = null;
Finished?.Invoke();
}
public void Cancel()
{
if (CancelToken == null)
{
throw new ValidationException("Not cancelable");
}
CancelToken.Cancel();
State = CompletionState.Canceled; // handled by the manager instead?
}
/// <summary>
/// Dispose 方法
/// </summary>
/// <param name="disposing"></param>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (CancelToken != null)
{
CancelToken.Cancel();
CancelToken.Dispose();
CancelToken = null;
}
}
}
public InstagramTabViewModel()
{
this.CancelToken = new CancellationTokenSource();
this.CancelWorkAction = () =>
{
CancelToken.Cancel();
};
CancelToken.Token.Register(() =>
{
this.CancelToken = new CancellationTokenSource();
NotifyPropertyChanged(nameof(CancelToken));
});
}
private void CancelFutureTasks()
{
_backupTimer?.Dispose();
_backupTimer = null;
try
{
CancelToken?.Cancel();
}
catch
{
}
}
private void OnClickRunButton(object sender, EventArgs e)
{
if (sess.Machine.IsRunning)
{
// stop machine thread without using Thread.Abort.
// we should never Abort machine execution thread because it may corrupt the VM.
runCancelToken.Cancel();
}
else
{
runCancelToken.Reset();
StartMachineRun();
}
}
/// <summary>
/// Cancels this instance.
/// </summary>
private void Cancel()
{
lock (_cancelSync)
{
CancelToken?.Cancel();
}
//wait for the current process to finish. It should be respecting the cancel
//token, so it should not take long.
while (Running)
{
Thread.Sleep(20);
}
CancelTokenDestroy();
}
public void ControlC(object sender, ConsoleCancelEventArgs args)
{
if (!IsRunning)
{
return;
}
//Debug.WriteLine("ControlC waiting for lock...");
lock (runLocker)
{
//Debug.WriteLine("ControlC got lock.");
if (ct != null)
{
args.Cancel = true;
ct.Cancel();
}
}
}
public void CancelRequest()
{
try
{
#if DOT_NET
// kill the task - we've timed out
IsCancelled = true;
if (WebRequest != null)
{
CancelToken.Cancel();
}
#else
CleanupRequest();
#endif
}
catch (Exception)
{
}
}
public void DisableFutureBackups()
{
_updateTimerSemaphore.Wait();
try
{
BackupTimer?.Dispose();
BackupTimer = null;
try
{
CancelToken?.Cancel();
}
catch {}
}
finally
{
_updateTimerSemaphore.Release();
}
}
/// <summary>
/// 停止
/// </summary>
private void DoStop()
{
//取消
CancelToken.Cancel();
//停止数据泵服务
//PumpControler.Stop();
//停止工作线程池
lock (WorkThreadPoolLock)
{
WorkThreadPool.ForEach(st => st.Stop());
WorkThreadPool = null;
}
//停止后台工作主线程
if (MainWorkThread.IsAlive)
{
MainWorkThread.Stop();
}
}
public void CancelRequest()
{
try
{
#if DOT_NET
// kill the task - we've timed out
IsCancelled = true;
if (WebRequest != null)
{
CancelToken.Cancel();
}
#else
/* disposing of the www class causes unity editor to lock up
* if (WebRequest != null)
* {
* WebRequest.Dispose();
* }*/
#endif
}
catch (Exception)
{
}
}
protected override void InternalExecute(object parameter)
{
CancelToken.Cancel();
}
public void StopMining()
{
CancelToken.Cancel();
}
public async Task <Chain> StartMining()
{
try
{
await commitLocker.WaitAsync();
if (!CancelToken.IsCancellationRequested && !Mining)
{
Mining = true;
}
else
{
Log.Warning("Already Mining...");
return(null);
}
}
finally
{
commitLocker.Release();
}
Mining = true;
if (CurrentBlock == null)
{
var genesis = await Genesis();
if (genesis != null)
{
var tx = TransactManager.ProcessTransaction(genesis.Transactions.First());
return(new Chain(this, genesis, Pool, tx, threads));
}
}
else
{
var block = new Block();
block.Header.Depth = CurrentBlock.Header.Depth + 1;
block.Header.PreviousBlockHash = CurrentBlock.Header.Hash;
block.Header.Difficult = GetTargetDiff();
byte[] root = new byte[0];
var deposit = new Immutable.Deposit(DepositManager, TransactManager);
List <Deposit> ellegibleDeposits = null;
(deposit, ellegibleDeposits, root) = deposit.ProcessDeposits(root, await GetDepositPool());
var transact = deposit.TransactManager;
block.Deposits = ellegibleDeposits;
var book = new Book(BookManager, transact);
var ellegibleOffers = new List <Offer>();
(book, ellegibleOffers, root) = book.ProcessOffers(root, await GetOfferPool());
transact = book.TransactManager;
block.Offers = ellegibleOffers;
var ellegibleOfferCancels = new List <OfferCancel>();
(book, ellegibleOfferCancels, root) = book.ProcessOfferCancels(root, await GetOfferCancelPool());
transact = book.TransactManager;
block.OfferCancels = ellegibleOfferCancels;
List <Transaction> ellegibleTransactions = null;
(transact, ellegibleTransactions, root) = transact.ProcessTransactions(root, minerWallet, await GetTransactionPool(), CancelToken);
block.Transactions = ellegibleTransactions;
if (CancelToken.IsCancellationRequested)
{
return(null);
}
var withdrawal = new Immutable.Withdrawal(WithdrawalManager, transact);
List <Withdrawal> ellegibleWithdrawals = null;
(withdrawal, ellegibleWithdrawals, root) = withdrawal.ProcessWithdrawals(root, await GetWithdrawalPool());
transact = withdrawal.TransactManager;
block.Withdrawals = ellegibleWithdrawals;
block.Offers = ellegibleOffers;
Log.Information("Mining New Block");
Log.Information(ellegibleTransactions.Count + " transactions");
Log.Information(ellegibleDeposits.Count + " deposits");
Log.Information(ellegibleWithdrawals.Count + " withdrawals");
Log.Information(ellegibleOffers.Count + " offers");
block.Header.MerkleRoot = root;
block.Header.TimeStamp = DateTime.Now;
var result = await Mine(block, CancelToken);
if (result != null)
{
Log.Debug("Getting commit lock");
try
{
await commitLocker.WaitAsync();
if (!CancelToken.IsCancellationRequested)
{
Log.Debug("Got commit lock");
CancelToken.Cancel();
Mining = false;
Mined = true;
transact.Balance.BlockHash = result.HashStr;
transact.Balance.Timestamp = result.Timestamp;
book.BlockHash = result.HashStr;
book.Timestamp = result.Timestamp;
return(new Chain(this, transact, deposit, withdrawal, book, result, CurrentBlock, Pool, threads));
}
}
finally
{
commitLocker.Release();
}
}
}
return(await Task <Chain> .FromResult((Chain)null));
}
private async Task <Chain> ProcessBlock(Block block)
{
Log.Debug("Starting process block");
if (Previous == null && CurrentBlock == null && block.Header.PreviousBlockHash == null)
{
Log.Debug("Creating genesis chain");
CancelToken.Cancel();
Mining = false;
Log.Debug("Genesis chain pool created");
if (block.Transactions.Count() != 1 ||
block.Transactions.First().Outputs[0].Wallet != "VMBxDa9XQbsAW67k7avuo7HcXKxz4nizetAPi4FB5Upcj3eCD" ||
block.Transactions.First().Outputs[0].Size != 28987200)
{
Log.Error("Genesis block with invalid transaction");
return(null);
}
var tx = TransactManager.ProcessTransaction(block.Transactions.First());
return(new Chain(this, block, Pool, tx, threads));
}
Log.Debug("Certifying dificulty");
var lastDeth = this.GetLastBlockDepth();
if (CurrentBlock != null && (CurrentBlock.Header.Depth - 20) >= lastDeth && block.Header.Difficult != GetTargetDiff())
{
Log.Error("Invalid Block Difficulty");
return(null);
}
Log.Debug("Verifying Depth");
if (CurrentBlock != null && block.Header.Depth != CurrentBlock.Header.Depth + 1)
{
Log.Error("Invalid Block Depth");
Log.Error("Current Block Depth " + CurrentBlock.Header.Depth);
Log.Error("Current Block Hash " + CurrentBlock.HashStr);
Log.Error("Received Block Depth " + block.Header.Depth);
Log.Error("Received Block Previous Hash " + block.PreviousHashStr);
return(null);
}
Log.Debug("Verifying previous hash null");
if (block.Header.PreviousBlockHash == null)
{
Log.Error("Received Empty previous block hash after genesis");
return(null);
}
Log.Debug("Verifying previous block hash match");
if (CurrentBlock != null && !block.Header.PreviousBlockHash.SequenceEqual(CurrentBlock.Header.Hash))
{
Log.Error("Invalid Previous Block Hash");
Log.Error("PreviusBlockHash " + Base58.Bitcoin.Encode(new Span <Byte>(block.Header.PreviousBlockHash)));
Log.Error("LastBlockHash " + Base58.Bitcoin.Encode(new Span <Byte>(CurrentBlock.Header.Hash)));
return(null);
}
if (block.Timestamp < CurrentBlock.Timestamp || block.Timestamp > DateTime.Now.ToUniversalTime())
{
Log.Error("Block with invalid timestamp");
return(null);
}
Log.Debug("Block Header validated.");
var transact = TransactManager;
var result = false;
byte[] root = new byte[0];
Log.Debug("Validatig deposits");
var deposit = new Immutable.Deposit(DepositManager, transact);
if (block.Deposits != null && block.DepositsDictionary.Count > 0)
{
foreach (var dp in block.Deposits)
{
if (CancelToken.IsCancellationRequested)
{
return(null);
}
if (!await Pool.Contains(dp))
{
Log.Error("Block with invalid deposit");
return(null);
}
deposit = deposit.ProcessDeposit(dp);
root = CryptoHelper.Hash(Base58.Bitcoin.Encode(new Span <Byte>(root)) + dp.ToString());
}
}
transact = deposit.TransactManager;
Log.Debug("Deposits validated");
Log.Debug("Validating book");
var book = new Book(BookManager, transact);
var trades = new List <Trade>();
if (block.OffersDictionary.Count > 0)
{
foreach (var of in block.Offers)
{
if (CancelToken.IsCancellationRequested)
{
return(null);
}
if (!await Pool.Contains(of))
{
Log.Error("Block with invalid offer");
return(null);
}
var clone = of.Clone();
clone.CleanTrades();
(result, book) = book.ProcessOffer(clone);
if (!result)
{
Log.Error("Block with invalid offer");
return(null);
}
foreach (var t in of.Trades)
{
if (!clone.Trades.Any(c => c.Equals(t)))
{
Log.Error("Block with invalid trade");
return(null);
}
root = CryptoHelper.Hash(Base58.Bitcoin.Encode(new Span <Byte>(root)) + t.ToString());
}
clone.Trades = of.Trades;
trades.AddRange(of.Trades);
root = CryptoHelper.Hash(Base58.Bitcoin.Encode(new Span <Byte>(root)) + clone.ToString());
}
}
book.Trades = trades.ToImmutableList();
transact = book.TransactManager;
if (block.OffersCancelDictionary.Count > 0)
{
foreach (var of in block.OfferCancels)
{
if (CancelToken.IsCancellationRequested)
{
return(null);
}
if (!await Pool.Contains(of))
{
Log.Error("Block with invalid offer cancel");
return(null);
}
var clone = of.Clone();
(result, book) = book.ProcessOfferCancel(clone);
if (!result)
{
Log.Error("Block with invalid offer cancel");
return(null);
}
root = CryptoHelper.Hash(Base58.Bitcoin.Encode(new Span <Byte>(root)) + clone.ToString());
}
}
transact = book.TransactManager;
Log.Debug("Book validated, validating transactions");
(result, transact, root) = await ValidateTransactions(root, block, transact);
if (!result)
{
return(null);
}
Log.Debug("Transactions validated, validating withdrawals");
var withdrawal = new Immutable.Withdrawal(WithdrawalManager, transact);
if (block.Withdrawals != null && block.WithdrawalsDictionary.Count > 0)
{
foreach (var wd in block.Withdrawals)
{
if (CancelToken.IsCancellationRequested)
{
return(null);
}
if (!await Pool.Contains(wd) && !withdrawal.CanProcess(wd))
{
Log.Error("Block with invalid withdrawal.");
return(null);
}
withdrawal = withdrawal.ProcessWithdrawal(wd);
root = CryptoHelper.Hash(Base58.Bitcoin.Encode(new Span <Byte>(root)) + wd.ToString());
}
}
transact = withdrawal.TransactManager;
Log.Debug("withdrawals validated");
if (!block.Header.MerkleRoot.SequenceEqual(root))
{
Log.Error("Block with invalid merkle root");
return(null);
}
Log.Debug("Merkle root validated, getting commit lock");
try
{
await commitLocker.WaitAsync();
Log.Debug("commit lock gained");
if (!CancelToken.IsCancellationRequested)
{
CancelToken.Cancel();
Log.Debug("Block references last block, appending");
Mining = false;
transact.Balance.BlockHash = block.HashStr;
transact.Balance.Timestamp = block.Timestamp;
book.BlockHash = block.HashStr;
book.Timestamp = block.Timestamp;
return(new Chain(this, transact, deposit, withdrawal, book, block, CurrentBlock, Pool, threads));
}
}
finally
{
commitLocker.Release();
}
return(null);
}
public void StopAll()
{
CancelToken.Cancel();
IsRunning = false;
}
private void CancelClicked(object sender, RoutedEventArgs e)
{
CancelToken.Cancel();
Cancelled = true;
(this.FindName("CancelButton") as Button).IsEnabled = false;
}
public override void Cancel() => CancelToken.Cancel();
