private static NativeMethods.ServiceState GetServiceStatus(IntPtr service)
{
var status = new NativeMethods.ServiceStatus();
if(NativeMethods.QueryServiceStatus(service, status) == 0)
{
throw new ServiceException("Failed to query service status.");
}
return status.dwCurrentState;
}
private static bool WaitForServiceStatus
(IntPtr service, NativeMethods.ServiceState waitStatus, NativeMethods.ServiceState desiredStatus)
{
var status = new NativeMethods.ServiceStatus();
NativeMethods.QueryServiceStatus(service, status);
if(status.dwCurrentState == desiredStatus)
{
return true;
}
var dwStartTickCount = Environment.TickCount;
var dwOldCheckPoint = status.dwCheckPoint;
while(status.dwCurrentState == waitStatus)
{
var dwWaitTime = status.dwWaitHint / 10;
if(dwWaitTime < 1000)
{
dwWaitTime = 1000;
}
else if(dwWaitTime > 10000)
{
dwWaitTime = 10000;
}
Thread.Sleep(dwWaitTime);
if(NativeMethods.QueryServiceStatus(service, status) == 0)
{
break;
}
if(status.dwCheckPoint > dwOldCheckPoint)
{
dwStartTickCount = Environment.TickCount;
dwOldCheckPoint = status.dwCheckPoint;
}
else
{
if((Environment.TickCount - dwStartTickCount) > status.dwWaitHint)
{
break;
}
}
}
return status.dwCurrentState == desiredStatus;
}
private static void StopService(IntPtr service)
{
var status = new NativeMethods.ServiceStatus();
NativeMethods.ControlService(service, NativeMethods.ServiceControl.Stop, status);
var changedStatus = WaitForServiceStatus
(service, NativeMethods.ServiceState.StopPending, NativeMethods.ServiceState.Stopped);
if(!changedStatus)
{
throw new ServiceException("Unable to stop service");
}
}