void ThreadProc( )
{
while (true)
{
Rock.Mobile.Util.Debug.WriteLine("ThreadProc: Sleeping...");
QueueProcessHandle.WaitOne( );
Rock.Mobile.Util.Debug.WriteLine("ThreadProc: Waking for work");
// while there are requests pending, process them
while (RequestQueue.IsEmpty == false)
{
Rock.Mobile.Util.Debug.WriteLine("ThreadProc: Processing Request");
// get the web request out of the queue
RequestUpdateHandle.WaitOne( ); //Wait to make sure no other thread is using the Queue
IWebRequestObject requestObj = null;
RequestQueue.TryDequeue(out requestObj); //yank it out
RequestUpdateHandle.Set( ); // all clear
if (requestObj != null)
{
// execute it
requestObj.ProcessRequest( );
}
}
}
}
/// <summary>
/// The one entry point, this is where requests should be sent
/// </summary>
public void TryPushRequest(IWebRequestObject requestObj, IResultHandler resultHandler)
{
// first, lock the queue
RequestUpdateHandle.WaitOne( );
// now we can be sure that it won't be pulled out and processed while we're trying to attach a handler.
IWebRequestObject currObj = RequestQueue.Where(r => r.GetRequestUrl( ) == requestObj.GetRequestUrl( )).SingleOrDefault( );
if (currObj != null)
{
Rock.Mobile.Util.Debug.WriteLine(string.Format("{0} already requested. Not queueing.", currObj.GetRequestUrl( )));
currObj.AttachResultHandler(resultHandler);
}
else
{
RequestQueue.Enqueue(requestObj);
Rock.Mobile.Util.Debug.WriteLine("Setting Wait Handle");
QueueProcessHandle.Set( );
}
// notify the thread it's ok to pull out more queue objects
RequestUpdateHandle.Set( );
}