/// <summary>
/// Wait until results of bundled requests are retrieved.
/// </summary>
/// <note>
/// Calls to this method must be externally synchronized.
/// </note>
/// <param name="isFirst">
/// True iff this is the first thread entering the bundle
/// </param>
/// <returns>
/// True if this thread is supposed to perform an actual bundled
/// operation (burst); false otherwise
/// </returns>
public bool WaitForResults(bool isFirst)
{
m_cThreads++;
try
{
if (isFirst)
{
m_startTime = DateTimeUtils.GetSafeTimeMillis();
}
if (BundleSize < Bundler.SizeThreshold)
{
if (isFirst)
{
long lDelay = Bundler.DelayMillis;
do
{
Monitor.Wait(Lock, (int)lDelay);
lDelay = 0L;
}while (IsPending());
}
else
{
while (true)
{
Monitor.Wait(Lock);
if (IsProcessed())
{
return(false);
}
// spurious wake-up; continue waiting
}
}
}
if (IsProcessed())
{
return(false);
}
// this bundle should be closed and processed right away
SetStatus(STATUS_PENDING);
// update stats
TotalSize += BundleSize;
long total = ++TotalBundles;
if (total > 1000 && // allow the "hotspot" to kick in
total % ADJUSTMENT_FREQUENCY == 0 && IsMaster)
{
// attempt to adjust for every 1000 iterations of the master
// bundle
Bundler.Adjust();
}
}
catch (ThreadInterruptedException)
{
Thread.CurrentThread.Interrupt();
SetStatus(STATUS_EXCEPTION);
}
catch (Exception e)
{
// should never happen
--m_cThreads;
throw e;
}
return(true);
}
