public static void ServiceStatusChanged(IntPtr parameter)
{
try
{
WinApi.Advapi32.SERVICE_NOTIFY n = Marshal.PtrToStructure <WinApi.Advapi32.SERVICE_NOTIFY>(parameter);
//Log.Main.Trace("Service status: " + n.ServiceStatus.dwCurrentState);
if (serviceStatus == n.ServiceStatus.dwCurrentState)//on some Windows ServiceStatusChanged is invoked many times!
{
return;
}
serviceStatus = n.ServiceStatus.dwCurrentState;
ServiceControllerStatus status;
switch (n.ServiceStatus.dwCurrentState)
{
case 1: //stopped
status = ServiceControllerStatus.Stopped;
_this = null;
break;
case 4: //running
status = ServiceControllerStatus.Running;
lock (instanceContext)
{
_this?.Unsubscribe();
_this?.Close();
_this = new CisteraScreenCaptureService.UiApiClient(instanceContext);
_this.Subscribe();
//beginKeepAliveServiceConnection();//it seems to be redundant because of infinite timeout, but sometimes the channel gets closed due to errors
}
break;
default:
throw new Exception("Unknown option: " + n.ServiceStatus.dwCurrentState);
}
Log.Main.Inform("Service status: " + status);
SysTray.This.ServiceStateChanged(status);
}
catch (Exception e)
{
Log.Main.Error(e);
}
finally
{
serviceStatusChangedManualResetEvent.Set();
}
}
static void beginMonitorServiceStartStop()
{
try
{
IntPtr hSCM = WinApi.Advapi32.OpenSCManager(null, null, WinApi.Advapi32.SCM_ACCESS.SC_MANAGER_CONNECT);//(WinApi.Advapi32.SCM_ACCESS)0xF003F);//
if (hSCM == IntPtr.Zero)
{
throw new Exception("OpenSCManager: " + ErrorRoutines.GetLastError());
}
IntPtr hService = WinApi.Advapi32.OpenService(hSCM, Cliver.CisteraScreenCaptureService.Program.SERVICE_NAME, WinApi.Advapi32.OpenServiceDesiredAccess.SERVICE_QUERY_STATUS);
if (hService == IntPtr.Zero)
{
throw new Exception("OpenService: " + ErrorRoutines.GetLastError());
}
ThreadRoutines.StartTry(() =>
{
for (; ;)
{
serviceSatusChangedNotify = new WinApi.Advapi32.SERVICE_NOTIFY();
serviceSatusChangedNotify.dwVersion = 2;
serviceSatusChangedNotify.pfnNotifyCallback = Marshal.GetFunctionPointerForDelegate(serviceStatusChangedDelegate);
serviceSatusChangedNotify.pContext = IntPtr.Zero;
serviceSatusChangedNotify.dwNotificationStatus = 0;
WinApi.Advapi32.SERVICE_STATUS_PROCESS process;
process.dwServiceType = 0;
process.dwCurrentState = 0;
process.dwControlsAccepted = 0;
process.dwWin32ExitCode = 0;
process.dwServiceSpecificExitCode = 0;
process.dwCheckPoint = 0;
process.dwWaitHint = 0;
process.dwProcessId = 0;
process.dwServiceFlags = 0;
serviceSatusChangedNotify.ServiceStatus = process;
serviceSatusChangedNotify.dwNotificationTriggered = 0;
serviceSatusChangedNotify.pszServiceNames = Marshal.StringToHGlobalUni(Cliver.CisteraScreenCaptureService.Program.SERVICE_NAME);
notifyHandle = GCHandle.Alloc(serviceSatusChangedNotify, GCHandleType.Pinned);
unmanagedNotifyStructure = notifyHandle.AddrOfPinnedObject();
if (0 != WinApi.Advapi32.NotifyServiceStatusChange(hService, WinApi.Advapi32.NotifyMask.SERVICE_NOTIFY_RUNNING | WinApi.Advapi32.NotifyMask.SERVICE_NOTIFY_STOPPED, unmanagedNotifyStructure))
{
LogMessage.Error("NotifyServiceStatusChange: " + ErrorRoutines.GetLastError());
}
serviceStatusChangedManualResetEvent.Reset();
serviceStatusChangedManualResetEvent.WaitOne();
notifyHandle.Free();
}
},
null,
() =>
{
try
{
notifyHandle.Free();
}
catch { }
}
);
}
catch (Exception e)
{
LogMessage.Error(e);
}
}
