/// <summary>
/// Ctor.
/// </summary>
/// <param name="statementResultService">handles result delivery</param>
/// <param name="dispatchService">for performing the dispatch</param>
/// <param name="msecTimeout">timeout for preserving dispatch order through blocking</param>
/// <param name="timeSourceService">time source provider</param>
/// <param name="threadLocalManager">The thread local manager.</param>
public UpdateDispatchViewBlockingSpin(StatementResultService statementResultService, DispatchService dispatchService, long msecTimeout, TimeSourceService timeSourceService, IThreadLocalManager threadLocalManager)
: base(statementResultService, dispatchService, threadLocalManager)
{
_currentFutureSpin = new UpdateDispatchFutureSpin(timeSourceService); // use a completed future as a start
_msecTimeout = msecTimeout;
_timeSourceService = timeSourceService;
}
/// <summary>Ctor. </summary>
/// <param name="view">is the blocking dispatch view through which to execute a dispatch</param>
/// <param name="earlier">is the older future</param>
/// <param name="msecTimeout">is the timeout period to wait for listeners to complete a prior dispatch</param>
/// <param name="timeSourceService">time source provider</param>
public UpdateDispatchFutureSpin(UpdateDispatchViewBlockingSpin view,
UpdateDispatchFutureSpin earlier,
long msecTimeout,
TimeSourceService timeSourceService)
{
_view = view;
_earlier = earlier;
_msecTimeout = msecTimeout;
_timeSourceService = timeSourceService;
}
public override void NewResult(UniformPair <EventBean[]> result)
{
StatementResultService.Indicate(result);
var isDispatchWaiting = IsDispatchWaiting;
if (!isDispatchWaiting.Value)
{
UpdateDispatchFutureSpin nextFutureSpin;
lock (this)
{
nextFutureSpin = new UpdateDispatchFutureSpin(this, _currentFutureSpin, _msecTimeout, _timeSourceService);
_currentFutureSpin = nextFutureSpin;
}
DispatchService.AddExternal(nextFutureSpin);
isDispatchWaiting.Value = true;
}
}
public void Execute()
{
if (!_earlier._isCompleted)
{
long spinStartTime = _timeSourceService.GetTimeMillis();
while (!_earlier._isCompleted)
{
Thread.Yield();
long spinDelta = _timeSourceService.GetTimeMillis() - spinStartTime;
if (spinDelta > _msecTimeout)
{
Log.Info("Spin wait timeout exceeded in listener dispatch for statement '" + _view.StatementResultService.StatementName + "'");
break;
}
}
}
_view.Execute();
_isCompleted = true;
_earlier = null;
}