public void Start(IFthService service)
{
if (!ServiceThreads.ContainsKey(service))
{
var t = Fi.Tech.SafeCreateThread(() => {
try {
var rt = service.Run();
if (rt != null)
{
rt?.Wait();
}
if (service is IFthCyclicService cServ)
{
var rt2 = cServ.MainLoopInit();
if (rt2 != null)
{
rt2?.Wait();
}
cServ.BreakMainLoop = false;
cServ.InterruptIssued = false;
Task[] lt = new Task[1];
int l = 0;
while (!cServ.BreakMainLoop && !cServ.InterruptIssued)
{
lt[l] = cServ.MainLoopIteration();
var prev = (l - 1) >= 0 ? l - 1 : lt.Length - 1;
if (lt[prev] != null && !lt[prev].IsCompleted)
{
lt[prev].Wait();
}
l = (l + 1) % lt.Length;
try {
Task.Delay(cServ.IterationDelay, CyclicServiceIterationResets[cServ].Token).Wait();
} catch (Exception) {
// this catch is because .Net throws on cancellation, cancelling is part of the main plan
// not the exceptional case for us here.
} finally {
CyclicServiceIterationResets[cServ] = new CancellationTokenSource();
}
}
}
} catch (Exception x) {
Fi.Tech.WriteLine($"Error Executing Service {service.GetType().Name} {x.Message}");
OnServiceError?.Invoke(service, x);
}
});
t.IsBackground = !service.IsCritical;
t.Name = $"fthservice_{idgen++}_{service.GetType().Name}";
t.Start();
Services.Add(service);
ServiceThreads[service] = t;
ServiceInfos[service] = new FthServiceInfo(service);
CyclicServiceIterationResets[service] = new CancellationTokenSource();
}
}
public IFthService InitService(Type svcType, params object[] args)
{
var svc = Services.FirstOrDefault(s => s.GetType() == svcType);
if (svc != null)
{
return(svc);
}
if (svcType != null)
{
IFthService instance = (IFthService)Activator.CreateInstance(svcType);
instance.Init(args);
Services.Add(instance);
return(instance);
}
return(null);
}
public void Stop(IFthService service)
{
if (ServiceThreads.ContainsKey(service))
{
service.InterruptIssued = true;
ServiceThreads[service].Join(TimeSpan.FromSeconds(12));
if (!service.IsCritical)
{
if (ServiceThreads[service].IsAlive)
{
ServiceThreads[service].Interrupt();
}
ServiceThreads.Remove(service);
ServiceInfos.Remove(service);
CyclicServiceIterationResets.Remove(service);
}
}
}
internal FthServiceInfo(IFthService service)
{
this.Name = service.GetType().Name;
}
