AssignCancellationToken()

void System.Threading.Tasks.Task< TResult >.AssignCancellationToken ( CancellationToken cancellationToken, Task< TResult > antecedent, TaskContinuation continuation )

inlineprivateinherited

Definition at line 1330 of file Task.cs.

    {
        ContingentProperties contingentProperties = EnsureContingentPropertiesInitializedUnsafe();
        contingentProperties.m_cancellationToken = cancellationToken;
        try
        {
            if ((Options & (TaskCreationOptions)13312) != 0)
            {
                return;
            }
            if (cancellationToken.IsCancellationRequested)
            {
                InternalCancel();
                return;
            }
            CancellationTokenRegistration value = ((antecedent != null) ? cancellationToken.UnsafeRegister(delegate(object t)
            {
                TupleSlim<Task, Task, TaskContinuation> tupleSlim = (TupleSlim<Task, Task, TaskContinuation>)t;
                Task item = tupleSlim.Item1;
                Task item2 = tupleSlim.Item2;
                item2.RemoveContinuation(tupleSlim.Item3);
                item.InternalCancel();
            }, new TupleSlim<Task, Task, TaskContinuation>(this, antecedent, continuation)) : cancellationToken.UnsafeRegister(delegate(object t)
            {
                ((Task)t).InternalCancel();
            }, this));
            contingentProperties.m_cancellationRegistration = new StrongBox<CancellationTokenRegistration>(value);
        }
        catch
        {
            Task task = m_contingentProperties?.m_parent;
            if (task != null && (Options & TaskCreationOptions.AttachedToParent) != 0 && (task.Options & TaskCreationOptions.DenyChildAttach) == 0)
            {
                task.DisregardChild();
            }
            throw;
        }
    }

References System.Threading.Tasks.Task< TResult >.Task(), System.cancellationToken, System.Threading.Tasks.Task< TResult >.DisregardChild(), System.Threading.Tasks.Task< TResult >.EnsureContingentPropertiesInitializedUnsafe(), System.Threading.Tasks.Task< TResult >.InternalCancel(), System.item, System.Threading.Tasks.Task< TResult >.m_contingentProperties, System.Threading.Tasks.Task< TResult >.ContingentProperties.m_parent, System.Threading.Tasks.Task< TResult >.Options, System.task, and System.value.

Referenced by System.Threading.Tasks.Task< TResult >.TaskConstructorCore().