protected override void State_Changed(SynchronizedStateEventArgs <SupercedableTaskState <TSource, TResult> > args)
{
using (SynchronizedStateChange <int> idChange = _currentTaskId.ChangeState())
idChange.NewState = args.CurrentState.TaskId;
args.CurrentState.ContinueWith(StateChangeContinuation);
}
public Task ChangeStateAsync(object userState, Action <SynchronizedStateChange <TState> > action)
{
return(Task.Factory.StartNew(o =>
{
object[] args = o as object[];
Action <SynchronizedStateChange <TState> > a = args[0] as Action <SynchronizedStateChange <TState> >;
using (SynchronizedStateChange <TState> changeState = ChangeState(args[1]))
a(changeState);
}, new object[] { action, userState }));
}
private void StateChangeContinuation(Task <TResult> task)
{
using (SynchronizedStateChange <int> idChange = _currentTaskId.ChangeState())
{
if (task.Id == _currentTaskId.CurrentState)
{
try { CurrentResult = task.Result; }
catch (Exception exception) { CurrentError = exception; }
}
}
}
public void StartNew(TSource source, Func <TSource, CancellationToken, TResult> function)
{
if (function == null)
{
throw new ArgumentNullException("function");
}
using (SynchronizedStateChange <SupercedableTaskState <TSource, TResult> > stateChange = ChangeState())
stateChange.NewState = SupercedableTaskState <TSource, TResult> .CheckSupercede(stateChange.CurrentState, source, function);
}
public void StartNew(TSource source, TResult value)
{
using (SynchronizedStateChange <SupercedableTaskState <TSource, TResult> > stateChange = ChangeState())
stateChange.NewState = SupercedableTaskState <TSource, TResult> .CheckSupercede(stateChange.CurrentState, source, value);
}