private ThreadStart Updater <T1, T2>(AtomicReferenceArray <T1> lastBatches, System.Threading.CountdownEvent insertersDone, ReadWriteLock updateLock, ICollection <T2> updates) where T1 : Org.Neo4j.Kernel.Api.Index.IndexEntryUpdate <T1>
{
return(throwing(() =>
{
// Entity ids that have been removed, so that additions can reuse them
IList <long> removed = new List <long>();
RandomValues randomValues = RandomValues.create(new Random(Random.seed() + THREADS));
while (insertersDone.CurrentCount > 0)
{
// Do updates now and then
Thread.Sleep(10);
updateLock.writeLock().@lock();
try
{
using (IndexUpdater updater = _populator.newPopulatingUpdater(_nodePropertyAccessor))
{
for (int i = 0; i < THREADS; i++)
{
IList <IndexEntryUpdate <object> > batch = lastBatches.get(i);
if (batch != null)
{
IndexEntryUpdate <object> update = null;
switch (randomValues.Next(3))
{
case 0: // add
if (!removed.Empty)
{
long?id = removed.remove(randomValues.Next(removed.size()));
update = add(id, Descriptor, ValueGenerator.apply(randomValues));
}
break;
case 1: // remove
IndexEntryUpdate <object> removal = batch.get(randomValues.Next(batch.size()));
update = remove(removal.EntityId, Descriptor, removal.values());
removed.add(removal.EntityId);
break;
case 2: // change
removal = batch.get(randomValues.Next(batch.size()));
change(removal.EntityId, Descriptor, removal.values(), toArray(ValueGenerator.apply(randomValues)));
break;
default:
throw new System.ArgumentException();
}
if (update != null)
{
updater.process(update);
updates.Add(update);
}
}
}
}
}
finally
{
updateLock.writeLock().unlock();
}
}
}));
}