public virtual void Enqueue(QueueMessage message)
{
if (message == null)
{
return;
}
lock (lockObj)
{
rearIndex = (rearIndex + 1) % this.Messages.Length;
if (rearIndex == this.allowedMessageSize)
{
return;
}
Messages[rearIndex] = message;
if (QueueIsFull())
{
QueueMessage[] temp = new QueueMessage[rearIndex + 2];
Array.Copy(Messages, 0, temp, 0, temp.Length - 1);
Messages = temp;
}
CurrentOffset = rearIndex;
message.SetQueueId(this.QueueId); // recorde queueId in queue message
message.SetOffset(this.CurrentOffset); //recode queue current offset
}
}
public virtual QueueMessage Dequeue()
{
lock (lockObj)
{
if (QueueIsEmpty())
{
return(null);
}
QueueMessage[] temp = new QueueMessage[rearIndex + 1];
QueueMessage message = Messages[frontIndex];
Array.Copy(Messages, frontIndex + 1, temp, frontIndex, rearIndex);
Messages = temp;
this.rearIndex -= 1;
CurrentOffset = frontIndex;
message.SetOffset(this.CurrentOffset);//recode queue current offset
return(message);
}
}