///// <summary>
///// I was having a hard day.
///// </summary>
///// <returns></returns>
//public string DebugStr()
//{
// StringBuilder sb = new StringBuilder();
// sb.Append("<Ref ");
// sb.Append(Id);
// sb.Append(", ");
// if (_tinfo == null)
// sb.Append("NO");
// else
// sb.AppendFormat("{0} {1}", _tinfo.Status.get(), _tinfo.StartPoint);
// sb.Append(", ");
// if (_tvals == null)
// sb.Append("TVals: NO");
// else
// {
// sb.Append("TVals: ");
// TVal t = _tvals;
// do
// {
// sb.Append(t.Point);
// sb.Append(" ");
// } while ((t = t.Prior) != _tvals);
// }
// sb.Append(">");
// return sb.ToString();
//}
#endregion
#region IDeref Members
/// <summary>
/// Gets the (immutable) value the reference is holding.
/// </summary>
/// <returns>The value</returns>
public override object deref()
{
LockingTransaction t = LockingTransaction.getRunning();
if (t == null)
{
object ret = currentVal();
//Console.WriteLine("Thr {0}, {1}: No-trans get => {2}", Thread.CurrentThread.ManagedThreadId,DebugStr(), ret);
return(ret);
}
return(t.doGet(this, _tvals));
}
/// <summary>
/// Send an action (encapsulated message).
/// </summary>
/// <param name="action">The action to execute.</param>
/// <remarks>
/// <para>If there is a transaction running on this thread,
/// defer execution until the transaction ends
/// (enqueue the action on the transaction).</para>
/// <para>If there is already an action running, enqueue it (nested).</para>
/// <para>Otherwise, queue it for execution.</para>
/// </remarks>
internal static void DispatchAction(Action action)
{
LockingTransaction trans = LockingTransaction.getRunning();
if (trans != null)
{
trans.enqueue(action);
}
else if (_nested != null)
{
_nested = _nested.cons(action);
}
else
{
action.Agent.Enqueue(action);
}
}