private void ConsumeData()
{
while (this.IsBlockModeActive)
{
QueuedBlockMsg queuedBlockMsg = this.m_oldestMessage;
if (queuedBlockMsg == null)
{
return;
}
if (queuedBlockMsg.WasProcessed)
{
queuedBlockMsg = queuedBlockMsg.NextMsg;
if (queuedBlockMsg == null)
{
return;
}
}
queuedBlockMsg.WasProcessed = true;
this.m_oldestMessage = queuedBlockMsg;
this.m_consumer.Write(queuedBlockMsg.EmitContext, queuedBlockMsg.LogDataBuf, queuedBlockMsg.LogDataStartOffset);
if (this.m_oldestMessage.IOBuffer != this.m_oldestBuffer && this.m_oldestMessage.IOBuffer != null)
{
this.RemoveOldestBuffer();
}
}
}
private void ProcessInput(QueuedBlockMsg dataMsg)
{
dataMsg.GetMessageSize();
if (this.m_newestMessage != null)
{
this.m_newestMessage.NextMsg = dataMsg;
this.m_newestMessage = dataMsg;
}
else
{
this.m_newestMessage = dataMsg;
this.m_oldestMessage = dataMsg;
}
bool flag = BitMasker.IsOn((int)dataMsg.EmitContext.grbitOperationalFlags, 16);
if (PassiveBlockMode.IsDebugTraceEnabled)
{
long num = StopwatchStamp.TicksToMicroSeconds(dataMsg.ReadDurationInTics);
PassiveBlockMode.Tracer.TraceDebug((long)this.GetHashCode(), "MessageArrived({0}) Gen=0x{1:X} Sector=0x{2:X} JBits=0x{3:X} EmitSeq=0x{4:X} LogDataLen=0x{5:X} ReadUSec={6}", new object[]
{
this.DatabaseName,
dataMsg.EmitContext.lgposLogData.lGeneration,
dataMsg.EmitContext.lgposLogData.isec,
(int)dataMsg.EmitContext.grbitOperationalFlags,
dataMsg.EmitContext.qwSequenceNum,
dataMsg.LogDataLength,
num
});
}
this.Copier.PerfmonCounters.RecordGranularBytesReceived((long)dataMsg.LogDataLength, flag);
ExchangeNetworkPerfmonCounters perfCounters = this.m_netChannel.PerfCounters;
if (perfCounters != null)
{
perfCounters.RecordLogCopyThruputReceived((long)dataMsg.LogDataLength);
if (dataMsg.CompressedLogDataLength > 0)
{
perfCounters.RecordCompressedDataReceived(dataMsg.CompressedLogDataLength, dataMsg.LogDataLength, NetworkPath.ConnectionPurpose.LogCopy);
}
}
this.TriggerConsumer();
if (flag || DateTime.UtcNow >= this.m_nextPingDue)
{
uint lGeneration = (uint)dataMsg.EmitContext.lgposLogData.lGeneration;
if (flag)
{
this.Copier.TrackKnownEndOfLog((long)((ulong)lGeneration), dataMsg.EmitContext.logtimeEmit);
}
NetworkTransportException ex;
bool flag2;
this.TrySendStatusMessageToActive(flag ? PassiveStatusMsg.Flags.AckEndOfGeneration : PassiveStatusMsg.Flags.None, dataMsg.RequestAckCounter, out ex, out flag2);
if (ex != null)
{
throw ex;
}
}
}
private void ProcessReadCallback(PassiveReadRequest ioReq, int bytesAvailable, bool completionIsSynchronous, Exception readEx)
{
PassiveBlockMode.Tracer.TraceFunction <string>((long)this.GetHashCode(), "ProcessReadCallback({0}) entered", this.DatabaseName);
lock (this.m_workerLock)
{
this.DisableTimer();
Exception ex = null;
bool flag2 = false;
try
{
this.m_recursionDepth++;
DiagCore.RetailAssert(this.m_recursionDepth == 1 || completionIsSynchronous, "recursive async completion", new object[0]);
ioReq.CompletionWasProcessed = true;
if (completionIsSynchronous)
{
ioReq.CompletedSynchronously = completionIsSynchronous;
}
if (readEx != null)
{
PassiveBlockMode.Tracer.TraceError <string, Exception>((long)this.GetHashCode(), "ProcessReadCallback({0}) read failed: ex={1}", this.DatabaseName, readEx);
ex = new NetworkCommunicationException(this.Configuration.SourceMachine, readEx.Message, readEx);
}
else if (bytesAvailable == 0)
{
PassiveBlockMode.Tracer.TraceError <string>((long)this.GetHashCode(), "ProcessReadCallback({0}) active closed connection", this.DatabaseName);
ex = new NetworkEndOfDataException(this.Configuration.SourceMachine, ReplayStrings.NetworkReadEOF);
}
else if (ioReq.Channel != this.m_netChannel)
{
ex = new NetworkEndOfDataException(this.Configuration.SourceMachine, ReplayStrings.NetworkReadEOF);
flag2 = true;
ioReq.Channel.Close();
}
else if (!this.IsBlockModeActive)
{
PassiveBlockMode.Tracer.TraceError <string>((long)this.GetHashCode(), "Discarding read since BM was already terminated", this.DatabaseName);
}
else
{
QueuedBlockMsg queuedBlockMsg = this.ReadInputMessage(ioReq.Channel);
if (queuedBlockMsg != null)
{
this.ProcessInput(queuedBlockMsg);
if (BitMasker.IsOn((int)queuedBlockMsg.EmitContext.grbitOperationalFlags, 2))
{
this.HandleActiveDismount();
return;
}
if (BitMasker.IsOn((int)queuedBlockMsg.EmitContext.grbitOperationalFlags, 16))
{
this.Copier.TrackLastContactTime(queuedBlockMsg.MessageUtc);
}
}
if (this.m_recursionDepth == 1)
{
while (this.IsBlockModeActive)
{
PassiveReadRequest passiveReadRequest = this.StartRead();
if (!passiveReadRequest.CompletionWasProcessed)
{
if (!this.m_runningAcll)
{
this.ScheduleTimer();
break;
}
break;
}
}
}
else
{
PassiveBlockMode.Tracer.TraceDebug <int>((long)this.GetHashCode(), "Recursive read avoided. Depth={0}", this.m_recursionDepth);
}
}
}
catch (NetworkTransportException ex2)
{
ex = ex2;
}
catch (NetworkRemoteException ex3)
{
ex = ex3;
}
catch (GranularReplicationOverflowException ex4)
{
ex = ex4;
}
finally
{
this.m_recursionDepth--;
if (ex != null && !flag2)
{
this.Terminate();
}
PassiveBlockMode.Tracer.TraceFunction <string>((long)this.GetHashCode(), "ProcessReadCallback({0}) exits", this.DatabaseName);
}
}
}
