public bool Run(TaskInfo info, Message msg)
{
_action();
return true;
}
private void LoadAndExec(TaskInfo ti, int cnt)
{
IAsyncMessageQueue service = null;
ICommunicationObject co = null;
try
{
service = _factory();
co = service as ICommunicationObject;
service.BeginGetMessages(ti.Queue, cnt, ti.VisibilitySpan, (ar) =>
{
Message[] msgs = null;
try
{
msgs = service.EndGetMessages(ar);
if (co != null) co.Close();
}
catch (Exception ex)
{
ExProcessor(ex);
if (co != null) co.Abort();
}
finally
{
int dec = msgs == null ? -cnt : msgs.Length - cnt;
if (dec < 0)
{
Interlocked.Add(ref ti.m_cnt, dec);
}
Interlocked.Exchange(ref ti.m_isInLoad, 0);
}
if (msgs == null) return;
foreach (var imsg in msgs)
{
ThreadPool.QueueUserWorkItem((state) =>
{
var msg = (Message)state;
bool delete;
try
{
delete = ti.Task.Run(ti, msg);
}
catch (Exception ex)
{
ExProcessor(ex);
delete = true;
}
Interlocked.Decrement(ref ti.m_cnt);
if (delete)
{
IAsyncMessageQueue srv = null;
ICommunicationObject sco = null;
try
{
srv = _factory();
sco = service as ICommunicationObject;
srv.BeginDeleteMessage(ti.Queue, msg.Id, msg.PopReceipt, (ar2) =>
{
try
{
srv.EndDeleteMessage(ar2);
if (sco != null) sco.Close();
}
catch (Exception ex)
{
ExProcessor(ex);
if (sco != null) sco.Abort();
}
},
null);
}
catch (Exception ex)
{
ExProcessor(ex);
if (sco != null) sco.Abort();
}
}
}, imsg); // pass current msg through the state. we cannot use closures here.
}
}
, null);
}
catch (Exception ex)
{
ExProcessor(ex);
Interlocked.Add(ref ti.m_cnt, -cnt);
Interlocked.Exchange(ref ti.m_isInLoad, 0);
if (co != null) co.Abort();
}
}