public int LoopOnce()
{
if (this.TaskQueue.Count == 0)
{
return(0);
}
if (this.ReadyTasks.Count > 0)
{
throw new InvalidOperationException("Concurrent call is not allowed");
}
object locker = this.Locker;
lock (locker)
{
DateTime utcNow = DateTime.UtcNow;
LinkedListNode <Looper.LooperTask> linkedListNode = this.TaskQueue.First;
while (linkedListNode != null)
{
Looper.LooperTask value = linkedListNode.Value;
if (value.When <= utcNow)
{
this.ReadyTasks.Add(value);
LinkedListNode <Looper.LooperTask> node = linkedListNode;
linkedListNode = linkedListNode.Next;
this.TaskQueue.Remove(node);
}
else
{
linkedListNode = linkedListNode.Next;
}
}
}
int count = this.ReadyTasks.Count;
if (count == 0)
{
return(0);
}
for (int i = 0; i < count; i++)
{
this.ReadyTasks[i].Action();
}
this.ReadyTasks.Clear();
return(count);
}
public void Schedule(Action action, DateTime when, bool atFrontQueue)
{
Assert.NotNull(action, "action");
object locker = this.Locker;
lock (locker)
{
Looper.LooperTask value = new Looper.LooperTask(action, when);
if (atFrontQueue)
{
this.TaskQueue.AddFirst(value);
}
else
{
this.TaskQueue.AddLast(value);
}
}
}