public void Start(JobQueue queue, bool alwaysRunning)
{
var processor = new JobProcessor(config, currentDb, manager, indexUpdater, indexReader);
var running = true;
while (running)
{
var curSize = queue.Size();
while (curSize > 0)
{
var loop = 0;
while (loop < curSize)
{
try
{
processor.Add(queue.Dequeue());
}
catch (Exception ex)
{
log.ErrorException("Dequeue Exception", ex);
}
loop++;
}
curSize = queue.Size();
}
processor.Flush(true);
running = Wait(queue, alwaysRunning, processor.ProcessCount);
}
}
bool Wait(JobQueue queue, bool alwaysRunning, long processCount)
{
var ret = false;
var exitMethod = false;
var dtCountdown = DateTime.UtcNow + TimeSpan.FromSeconds(30);
var sw = new SpinWait();
if (traceEnabled && Waiting != null)
{
Waiting(this, new WaitEventArgs(processCount, queue.ID));
}
while (!exitMethod)
{
var localStopping = stopping;
// Exit if Timeout and not always running
// Or Signaled from Manager to stop job
if ((!alwaysRunning && dtCountdown > DateTime.UtcNow) || (localStopping == 1))
{
exitMethod = true;
}
else
{
// Something in queue to process
if (queue.Size() > 0)
{
ret = true;
exitMethod = true;
}
else
{
sw.SpinOnce();
}
}
}
return ret;
}
void InitializeQueues()
{
int queueSize;
if (!Int32.TryParse(config.GetSetting(SettingKeys.Manager_QueueSize), out queueSize))
{
queueSize = 1024;
}
whenToStartNewTask = Math.Min((int)(queueSize * 0.5), 50);
for (int i = 0; i < queues.Length; i++)
{
queues[i] = new JobQueue(queueSize, traceEnabled);
}
}