Thread Pool with windows service

Question

Hi

I was wondering the best way to implement a multi threaded windows service, to be used in similar fashion to the windows task scheduler service with added functionality.

Does anybody know of any resources or can anybody point me inthe right direction. I so far plan to have a main thread running as part of a threadpool, and each time I need to start a new task, start a new thread and add it to the thread pool. I assume then the task has finished, the thread will automatically stop and be removed from the threadpool.

Stopping the service will stop any subsequent threads from starting, using simple bool flags, but not stop any threads already running from finishing

Pseudocode would be something like this

Thread main = new thread()
Bool running;

OnStart()
{
running = true;
main.threadstart = MainThreadWorker;
main.start;
}

OnStop() { running = false; }

MainThreadWorker()
{
while (running)
{
If (new task)
{
Start New thread;
Add new thread to Threadpool;
}

if (running) {mainthread.sleep (Some interval)}
}
Somehow kill the threadpool here;
}

thanks for your help

Alexey Kovaltchuk · Answer

hello! there's no way to kill ThreadPool you can't abort it! and there is more porblems in Managed Windows Services: when the service starts in OnStart you launching the service worker thread. in the worker thread you may use the ThreadPool.QueueUserWorkItem(...). but there is one issue: when you trying to stop your service (for example via services.msc) while some task are running in the ThreadPool your service will never accept the stop event and the OnStop will never be called until ThreadPool finishes all it's tasks. so the state of service will be StopPending. because all tasks of ThreadPool cannot be canceled ThreadPool is not the best choise when writing Windows Service.