// Get Taskpool started by kicking off some tasks
/// <summary>
/// Procedure gets the TaskPool started by kicking off a few
/// TPTask threads.
/// </summary>
public static void Initialize()
{
if (TPTask.Tasks != 0)
{
return;
}
try
{
lock (lstTasks.SyncRoot)
{
// If shutting down then exit
if (bShuttingDown)
{
return;
}
// If already initialized then exit
if (bInitialized)
{
return;
}
// Hook up event handlers and flag initialized
if (!bInitialized)
{
TPTask.TPTaskComplete += new TPTask.TPTaskCompleteHandler(OnTPTaskComplete);
bInitialized = true;
}
for (int i = 0; i < MIN_ACTIVE_TASKS; i++)
{
TPTaskInit init = new TPTaskInit();
// Create new TPTask
init.Task = new TPTask(ref leaderSignal, ref workSignal);
// Keep thread in ThreadPool
init.Task.RecycleTask = true;
// Create worker thread
init.Worker = new Thread(new ThreadStart(init.Task.Service));
// Start worker
init.Worker.Start();
// Add this task to our list of tasks
lstTasks.Add(init);
}
} //End-Lock on lstTasks
} //End-try
catch (Exception /*e*/)
{}
}
/// <summary>
/// Procedure shuts down the TaskPool by allowing the TPTask threads
/// running to finish what they are doing and exit the TaskPool(up to MAX_THREAD_WAIT)
/// before aborting each one.
/// </summary>
/// <remarks>To shutdown the TaskPool, iterate thru the list of
/// TPTasks and set their RecycleTask property to false,
/// so they terminate after they finish processing their current
/// request and wait (up to MAX_THREAD_WAIT) on each TPTask thread
/// to exit before aborting the TPTask thread.
/// </remarks>
public static void Shutdown()
{
lock (lstTasks.SyncRoot)
{
// Signal that we are shutting down
bShuttingDown = true;
workSignal.AllowReset = false;
workSignal.Signal();
for (int i = 0; i < lstTasks.Count; i++)
{
try
{
TPTaskInit init = (TPTaskInit)lstTasks[i];
// Do not recycle task
init.Task.RecycleTask = false;
// Wait on thread to exit.
// Instead of waiting indefinitely
// we may have have to interrupt it and
// catch the exception
init.Worker.Join(MAX_THREAD_WAIT);
if (init.Worker.IsAlive)
{
init.Worker.Abort();
}
}
catch (Exception e)
{
string strMsg = e.Message;
}
}
// Clear all tasks
lstTasks.Clear();
// Clear all client subscriptions
ClientNotification.Clear();
// Set threadpool as uninitialized
bInitialized = false;
} //End-lock lstTasks
} //End-Shutdown
