private bool TryFill()
{
var subscriptonsReadyForPolling = this.bufferPool
.Where(s => !s.IsPolling && !s.IsPoisoned && s.NewEventsQueue.Count < queueMaxCount)
.ToArray();
if (!subscriptonsReadyForPolling.Any())
// all subscriptions are being polled
return false;
foreach (var subscription in subscriptonsReadyForPolling)
{
subscription.IsPolling = true;
ThreadPool.UnsafeQueueUserWorkItem(new WaitCallback(_ =>
poller.PollSubscription(subscription.StreamType, subscription.Url, subscription.Token, subscription.CurrentBufferVersion)), null);
}
// there are subscriptions that are being polled
return true;
}
private bool TryFill(SubscriptionBuffer buffer)
{
if (!buffer.IsPolling && !buffer.IsPoisoned && buffer.NewEventsQueue.Count < queueMaxCount)
{
buffer.IsPolling = true;
try
{
if (!ThreadPool.UnsafeQueueUserWorkItem(new WaitCallback(_ =>
poller.PollSubscription(buffer.StreamType, buffer.Url, buffer.Token, buffer.CurrentBufferVersion)), null))
{
this.bus.Publish(new FatalErrorOcurred(new FatalErrorException("A work item could not be queued in Poller.TryFill()")));
}
}
catch (Exception ex)
{
this.bus.Publish(new FatalErrorOcurred(new FatalErrorException("A work item could not be queued in Poller.TryFill()", ex)));
throw;
}
return true;
}
return false;
}