public IAsyncResult BeginWrite(ReaderWriterGateCallback callback, Object state,
AsyncCallback asyncCallback, Object asyncState)
{
AsyncResult <Object> ar = new AsyncResult <Object>(asyncCallback, asyncState);
ReaderWriterGateReleaser releaser = new ReaderWriterGateReleaser(callback, this, false, state, ar);
m_syncLock.Enter(true);
switch (m_state)
{
case ReaderWriterGateStates.Free: // If Free "RFW -> OBW, invoke, return
case ReaderWriterGateStates.ReservedForWriter:
m_state = ReaderWriterGateStates.OwnedByWriter;
ThreadPool.QueueUserWorkItem(releaser.Invoke);
break;
case ReaderWriterGateStates.OwnedByReaders: // If OBR | OBRAWP -> OBRAWP, queue, return
case ReaderWriterGateStates.OwnedByReadersAndWriterPending:
m_state = ReaderWriterGateStates.OwnedByReadersAndWriterPending;
m_qWriteRequests.Enqueue(releaser);
break;
case ReaderWriterGateStates.OwnedByWriter: // If OBW, queue, return
m_qWriteRequests.Enqueue(releaser);
break;
}
m_syncLock.Leave();
return(ar);
}
private void AddToValues(Int64 lowAddend, Int64 highAddend, Int64 currentAddend)
{
Boolean reportProgressUpdate;
m_lock.Enter(true);
reportProgressUpdate = SetValues(true, m_low + lowAddend, m_high + highAddend, m_current + currentAddend);
m_lock.Leave();
ReportProgressUpdate(reportProgressUpdate);
}
/// <summary>Implements the ResourceLock's Leave behavior.</summary>
protected override void OnLeave(Boolean exclusive)
{
m_resLock.Leave();
}