private void CheckExpire(TaskTimer timer)
{
// get the next scheduled item
UpdateRecord data = null;
lock (_data) {
if (_queue.Count == 0)
{
_queueTimer.Change(_delay, TaskEnv.Current);
return;
}
Tuplet <string, DateTime> key = _queue.Peek();
if (key.Item2 > DateTime.UtcNow)
{
_queueTimer.Change(key.Item2, TaskEnv.Current);
return;
}
data = _data[key.Item1];
_queue.Dequeue();
_data.Remove(key.Item1);
}
_dispatcher.Dispatch(data);
// check for optimal sleep interval
lock (_data) {
if (_queue.Count == 0)
{
_queueTimer.Change(_delay, TaskEnv.Current);
return;
}
Tuplet <string, DateTime> key = _queue.Peek();
_queueTimer.Change(key.Item2, TaskEnv.Current);
}
}
private void CheckExpire(TaskTimer timer)
{
while (true)
{
// get the next scheduled item
UpdateRecord data = null;
lock (_data) {
if (_queue.Count == 0)
{
_queueTimer.Change(_delay, TaskEnv.None);
return;
}
Tuplet <DateTime, XUri> key = _queue.Peek();
if (key.Item1 > DateTime.UtcNow)
{
_queueTimer.Change(key.Item1, TaskEnv.None);
return;
}
data = _data[key.Item2];
_queue.Dequeue();
_data.Remove(key.Item2);
}
Interlocked.Increment(ref _pendingCount);
_dispatcher.Dispatch(data, new Result(TimeSpan.MaxValue)).WhenDone(r => {
// cleanup items from the queue
var poll = false;
foreach (var itemId in data.QueueIds)
{
if (!_persistentQueue.CommitDequeue(itemId))
{
// if we couldn't take an item, it must have gone back to the queue, so we better poll again
poll = true;
}
}
if (poll)
{
_poll = true;
}
Interlocked.Decrement(ref _pendingCount);
if (r.HasException)
{
_log.Error(string.Format("dispatch of '{0}' encountered an error", data.Id), r.Exception);
}
});
}
}