XnStatus XnSensorClient::WaitForReply(XnSensorServerCustomMessages ExpectedMessage)
{
XnStatus nRetVal = XN_STATUS_OK;
// wait for event
nRetVal = xnOSWaitEvent(m_hReplyEvent, XN_SENSOR_REPLY_TIMEOUT);
if (nRetVal != XN_STATUS_OK)
{
XN_LOG_WARNING_RETURN(nRetVal, XN_MASK_SENSOR_SERVER, "Timeout when waiting for reply from sensor server!");
}
// reset it
nRetVal = xnOSResetEvent(m_hReplyEvent);
XN_IS_STATUS_OK(nRetVal);
// check error code
if (m_LastReply.nRetVal != XN_STATUS_OK)
{
XN_LOG_WARNING_RETURN(m_LastReply.nRetVal, XN_MASK_SENSOR_SERVER, "Server returned an error: %s", xnGetStatusString(m_LastReply.nRetVal));
}
if (m_LastReply.Type != ExpectedMessage)
{
XN_LOG_WARNING_RETURN(XN_STATUS_ERROR, XN_MASK_SENSOR_SERVER, "Sensor server protocol error - invalid reply type!");
}
return (XN_STATUS_OK);
}
XnBool XnSensorServer::ShutdownIfPossible()
{
XnStatus nRetVal = XN_STATUS_OK;
// lock sessions list
XnAutoCSLocker locker(m_hSessionsLock);
// check if no sessions and no sensors
if (CanShutdown())
{
// lock the running lock
XnAutoMutexLocker serverRunningLock(m_hServerRunningMutex, XN_SENSOR_SERVER_RUNNING_MUTEX_TIMEOUT);
nRetVal = serverRunningLock.GetStatus();
if (nRetVal == XN_STATUS_OK)
{
// make sure no client is waiting to connect
CheckForNewClients(0);
// re-check shutdown condition
if (CanShutdown())
{
xnLogInfo(XN_MASK_SENSOR_SERVER, "No sensors are open and no client is connected. Shutting down...");
// reset the event (to notify server is no longer up)
nRetVal = xnOSResetEvent(m_hServerRunningEvent);
if (nRetVal != XN_STATUS_OK)
{
xnLogWarning(XN_MASK_SENSOR_SERVER, "Failed to reset sensor server event: %s - proceeding with shutdown.", xnGetStatusString(nRetVal));
XN_ASSERT(FALSE);
}
// and close the socket (to free the port for another server)
xnOSCloseSocket(m_hListenSocket);
m_hListenSocket = NULL;
return TRUE;
}
}
}
return FALSE;
}
void XnSensorServer::ShutdownServer()
{
XnStatus nRetVal = XN_STATUS_OK;
XnAutoMutexLocker serverRunningLock(m_hServerRunningMutex, XN_SENSOR_SERVER_RUNNING_MUTEX_TIMEOUT);
nRetVal = serverRunningLock.GetStatus();
if (nRetVal != XN_STATUS_OK)
{
//This could mean there's another server/client that's frozen and they're jamming the mutex...
xnLogWarning(XN_MASK_SENSOR_SERVER, "Failed to lock server mutex: %s - proceeding with shutdown.", xnGetStatusString(nRetVal));
XN_ASSERT(FALSE);
}
if (m_hServerRunningEvent != NULL)
{
nRetVal = xnOSResetEvent(m_hServerRunningEvent);
if (nRetVal != XN_STATUS_OK)
{
xnLogWarning(XN_MASK_SENSOR_SERVER, "Failed to reset sensor server event: %s - proceeding with shutdown.", xnGetStatusString(nRetVal));
XN_ASSERT(FALSE);
}
xnOSCloseEvent(&m_hServerRunningEvent);
m_hServerRunningEvent = NULL;
}
XN_ASSERT(m_sessions.IsEmpty());
if (m_hListenSocket != NULL)
{
xnOSCloseSocket(m_hListenSocket);
m_hListenSocket = NULL;
}
if (m_hSessionsLock != NULL)
{
xnOSCloseCriticalSection(&m_hSessionsLock);
m_hSessionsLock = NULL;
}
}
