public void HeartbeatReadTimerCallback(object state)
{
lock (_heartBeatReadLock)
{
if (m_hasDisposedHeartBeatReadTimer)
{
return;
}
bool shouldTerminate = false;
try
{
if (!m_closed)
{
if (!m_heartbeatRead.WaitOne(0))
{
m_missedHeartbeats++;
}
else
{
m_missedHeartbeats = 0;
}
// We check against 8 = 2 * 4 because we need to wait for at
// least two complete heartbeat setting intervals before
// complaining, and we've set the socket timeout to a quarter
// of the heartbeat setting in setHeartbeat above.
if (m_missedHeartbeats > 2 * 4)
{
string description = string.Format("Heartbeat missing with heartbeat == {0} seconds", m_heartbeat);
var eose = new EndOfStreamException(description);
ESLog.Error(description, eose);
ShutdownReport.Add(new ShutdownReportEntry(description, eose));
HandleMainLoopException(
new ShutdownEventArgs(ShutdownInitiator.Library, 0, "End of stream", eose));
shouldTerminate = true;
}
}
if (shouldTerminate)
{
TerminateMainloop();
FinishClose();
}
else if (_heartbeatReadTimer != null)
{
_heartbeatReadTimer.Change(Heartbeat * 1000, Timeout.Infinite);
}
}
catch (ObjectDisposedException)
{
// timer is already disposed,
// e.g. due to shutdown
}
catch (NullReferenceException)
{
// timer has already been disposed from a different thread after null check
// this event should be rare
}
}
}
public void LogCloseError(string error, Exception ex)
{
ESLog.Error(error, ex);
ShutdownReport.Add(new ShutdownReportEntry(error, ex));
}