TransactionStatePromotedEnded.cs

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using System.Threading;
 
namespace System.Transactions;
 
internal abstract class TransactionStatePromotedEnded : TransactionStateEnded
{
    private static WaitCallback s_signalMethod;
 
    private static WaitCallback SignalMethod => LazyInitializer.EnsureInitialized<WaitCallback>(ref s_signalMethod, ref TransactionState.s_classSyncObject, () => SignalCallback);
 
    internal override void EnterState(InternalTransaction tx)
    {
        base.EnterState(tx);
        CommonEnterState(tx);
        if (!ThreadPool.QueueUserWorkItem(SignalMethod, tx))
        {
            throw TransactionException.CreateInvalidOperationException(TraceSourceType.TraceSourceLtm, System.SR.UnexpectedFailureOfThreadPool, null, tx?.DistributedTxId ?? Guid.Empty);
        }
    }
 
    internal override void AddOutcomeRegistrant(InternalTransaction tx, TransactionCompletedEventHandler transactionCompletedDelegate)
    {
        if (transactionCompletedDelegate != null)
        {
            TransactionEventArgs transactionEventArgs = new TransactionEventArgs();
            transactionEventArgs._transaction = tx._outcomeSource.InternalClone();
            transactionCompletedDelegate(transactionEventArgs._transaction, transactionEventArgs);
        }
    }
 
    internal override void EndCommit(InternalTransaction tx)
    {
        PromotedTransactionOutcome(tx);
    }
 
    internal override void CompleteBlockingClone(InternalTransaction tx)
    {
    }
 
    internal override void CompleteAbortingClone(InternalTransaction tx)
    {
    }
 
    internal override void CreateBlockingClone(InternalTransaction tx)
    {
        throw TransactionException.CreateTransactionStateException(tx._innerException, tx.DistributedTxId);
    }
 
    internal override void CreateAbortingClone(InternalTransaction tx)
    {
        throw TransactionException.CreateTransactionStateException(tx._innerException, tx.DistributedTxId);
    }
 
    internal override Guid get_Identifier(InternalTransaction tx)
    {
        return tx.PromotedTransaction.Identifier;
    }
 
    internal override void Promote(InternalTransaction tx)
    {
    }
 
    protected abstract void PromotedTransactionOutcome(InternalTransaction tx);
 
    private static void SignalCallback(object state)
    {
        InternalTransaction internalTransaction = (InternalTransaction)state;
        lock (internalTransaction)
        {
            internalTransaction.SignalAsyncCompletion();
            TransactionManager.TransactionTable.Remove(internalTransaction);
        }
    }
}