private void RequestQueue_BufferOverflowed(AsyncTargetWrapperOverflowAction action, int limit, int count, AsyncLogEventInfo e)
{
if (BufferOverflowed != null)
{
BufferOverflowed.Invoke(action, limit, count, e);
}
}
/// <summary>
/// Enqueues another item. If the queue is overflown the appropriate
/// action is taken as specified by <see cref="OnOverflow"/>.
/// </summary>
/// <param name="logEventInfo">The log event info.</param>
/// <returns>Queue was empty before enqueue</returns>
public bool Enqueue(AsyncLogEventInfo logEventInfo)
{
lock (this)
{
if (this.logEventInfoQueue.Count >= this.RequestLimit)
{
InternalLogger.Debug("Async queue is full");
switch (this.OnOverflow)
{
case AsyncTargetWrapperOverflowAction.Discard:
InternalLogger.Debug("Discarding one element from queue");
var dequeued = this.logEventInfoQueue.Dequeue();
if (BufferOverflowed != null)
{
BufferOverflowed.Invoke(this.OnOverflow, this.RequestLimit, this.logEventInfoQueue.Count, dequeued);
}
break;
case AsyncTargetWrapperOverflowAction.Grow:
InternalLogger.Debug("The overflow action is Grow, adding element anyway");
if (BufferOverflowed != null)
{
BufferOverflowed.Invoke(this.OnOverflow, this.RequestLimit, this.logEventInfoQueue.Count, logEventInfo);
}
break;
case AsyncTargetWrapperOverflowAction.Block:
while (this.logEventInfoQueue.Count >= this.RequestLimit)
{
InternalLogger.Debug("Blocking because the overflow action is Block...");
if (BufferOverflowed != null)
{
BufferOverflowed.Invoke(this.OnOverflow, this.RequestLimit, this.logEventInfoQueue.Count, logEventInfo);
}
System.Threading.Monitor.Wait(this);
InternalLogger.Trace("Entered critical section.");
}
InternalLogger.Trace("Limit ok.");
break;
}
}
this.logEventInfoQueue.Enqueue(logEventInfo);
return(this.logEventInfoQueue.Count == 1);
}
}
