public override V Complete()
{
if (!done)
{
queue.ReleaseWrite(valueToPut);
return(successfulPut);
}
else
{
throw new InvalidOperationException("Put: Complete or Cancel can be called only once");
}
}
public static async Task Enqueue <T>(this IQueueSink <T> queue, T item, CancellationToken ctoken)
{
AcquireWriteResult result = await queue.AcquireWriteAsync(1, ctoken);
result.Visit <DBNull>
(
new Func <AcquireWriteSucceeded, DBNull>
(
succeeded =>
{
System.Diagnostics.Debug.Assert(succeeded.ItemCount == 1);
bool wasCancelled = false;
if (ctoken.IsCancellationRequested)
{
wasCancelled = true;
queue.ReleaseWrite();
}
else
{
queue.ReleaseWrite(item);
}
if (wasCancelled)
{
throw new OperationCanceledException(ctoken);
}
return(DBNull.Value);
}
),
new Func <AcquireWriteCancelled, DBNull>
(
cancelled => { throw new OperationCanceledException(ctoken); }
),
new Func <AcquireWriteFaulted, DBNull>
(
faulted => { throw faulted.Exception; }
)
);
}
public static void ReleaseWrite <T>(this IQueueSink <T> queue, T producedItem)
{
queue.ReleaseWrite(ImmutableList <T> .Empty.Add(producedItem));
}
public static void ReleaseWrite <T>(this IQueueSink <T> queue)
{
queue.ReleaseWrite(ImmutableList <T> .Empty);
}