public bool Enqueue(T value, TimeSpan timeout)
{
_monitor.Lock();
try
{
if (_receiveRequests.Count > 0)
{
var receiver = _receiveRequests.First !;
_receiveRequests.RemoveFirst();
receiver.Value.Element = value;
receiver.Value.IsDone = true;
receiver.Value.Condition.Signal();
return(true);
}
if (timeout == TimeSpan.Zero)
{
return(false);
}
var node = _sendRequests.AddLast(new SendRequest(_monitor.NewCondition(), value));
var deadline = Deadline.FromTimeout(timeout);
while (true)
{
TimeSpan remaining = deadline.Remaining();
try
{
node.Value.Condition.Await(remaining);
}
catch (ThreadInterruptedException)
{
if (node.Value.IsDone)
{
Thread.CurrentThread.Interrupt();
return(true);
}
_sendRequests.Remove(node);
throw;
}
if (node.Value.IsDone)
{
return(true);
}
remaining = deadline.Remaining();
if (remaining <= TimeSpan.Zero)
{
_sendRequests.Remove(node);
return(false);
}
}
}
finally
{
_monitor.Unlock();
}
}
public void Await(TimeSpan timeout)
{
Monitor.Enter(_conditionMonitor);
_parentLock.Unlock();
try
{
Monitor.Wait(_conditionMonitor, timeout);
}
finally
{
Monitor.Exit(_conditionMonitor);
_parentLock.LockNonInterruptibly(out var wasInterrupted);
if (wasInterrupted)
{
throw new ThreadInterruptedException();
}
}
}