public static int perfmon(UDTSOCKET u, CPerfMon perf, bool clear)
{
try
{
CUDT udt = s_UDTUnited.lookup(u);
udt.sample(perf, clear);
return 0;
}
catch (CUDTException e)
{
s_UDTUnited.setError(new CUDTException(e));
return ERROR;
}
catch (Exception e)
{
s_UDTUnited.setError(new CUDTException(-1, 0, 0));
return ERROR;
}
}
public void sample(CPerfMon perf, bool clear)
{
if (!m_bConnected)
throw new CUDTException(2, 2, 0);
if (m_bBroken || m_bClosing)
throw new CUDTException(2, 1, 0);
Int64 currtime = CClock.getTime();
perf.msTimeStamp = (currtime - m_StartTime) / 1000;
perf.pktSent = m_llTraceSent;
perf.pktRecv = m_llTraceRecv;
perf.pktSndLoss = m_iTraceSndLoss;
perf.pktRcvLoss = m_iTraceRcvLoss;
perf.pktRetrans = m_iTraceRetrans;
perf.pktSentACK = m_iSentACK;
perf.pktRecvACK = m_iRecvACK;
perf.pktSentNAK = m_iSentNAK;
perf.pktRecvNAK = m_iRecvNAK;
perf.usSndDuration = m_llSndDuration;
perf.pktSentTotal = m_llSentTotal;
perf.pktRecvTotal = m_llRecvTotal;
perf.pktSndLossTotal = m_iSndLossTotal;
perf.pktRcvLossTotal = m_iRcvLossTotal;
perf.pktRetransTotal = m_iRetransTotal;
perf.pktSentACKTotal = m_iSentACKTotal;
perf.pktRecvACKTotal = m_iRecvACKTotal;
perf.pktSentNAKTotal = m_iSentNAKTotal;
perf.pktRecvNAKTotal = m_iRecvNAKTotal;
perf.usSndDurationTotal = m_llSndDurationTotal;
double interval = (double)(currtime - m_LastSampleTime);
perf.mbpsSendRate = (double)(m_llTraceSent) * m_iPayloadSize * 8.0 / interval;
perf.mbpsRecvRate = (double)(m_llTraceRecv) * m_iPayloadSize * 8.0 / interval;
perf.usPktSndPeriod = m_ullInterval / (double)(m_ullCPUFrequency);
perf.pktFlowWindow = m_iFlowWindowSize;
perf.pktCongestionWindow = (int)m_dCongestionWindow;
perf.pktFlightSize = CSeqNo.seqlen((Int32)(m_iSndLastAck), (Int32)(m_iSndCurrSeqNo));
perf.msRTT = m_iRTT/1000.0;
perf.mbpsBandwidth = m_iBandwidth * m_iPayloadSize * 8.0 / 1000000.0;
if (WAIT_OBJECT_0 == WaitForSingleObject(m_ConnectionLock, 0))
{
perf.byteAvailSndBuf = (null == m_pSndBuffer) ? 0 : (m_iSndBufSize - m_pSndBuffer.getCurrBufSize()) * m_iMSS;
perf.byteAvailRcvBuf = (null == m_pRcvBuffer) ? 0 : m_pRcvBuffer.getAvailBufSize() * m_iMSS;
m_ConnectionLock.ReleaseMutex();
}
else
{
perf.byteAvailSndBuf = 0;
perf.byteAvailRcvBuf = 0;
}
if (clear)
{
m_llTraceSent = m_llTraceRecv = m_iTraceSndLoss = m_iTraceSndLoss = m_iTraceRetrans = m_iSentACK = m_iRecvACK = m_iSentNAK = m_iRecvNAK = 0;
m_llSndDuration = 0;
m_LastSampleTime = currtime;
}
}
public static int perfmon(UDTSOCKET u, CPerfMon perf)
{
perfmon(u, perf, true);
}
// Functionality:
// read the performance data since last sample() call.
// Parameters:
// 0) [in, out] perf: pointer to a CPerfMon structure to record the performance data.
// 1) [in] clear: flag to decide if the local performance trace should be cleared.
// Returned value:
// None.
public void sample(CPerfMon perf)
{
sample(perf, true);
}
