internal InternalPartitionEnumerator(IEnumerator <TSource> sharedReader, Partitioner.SharedLong sharedIndex, Partitioner.SharedBool hasNoElementsLeft, object sharedLock, Partitioner.SharedInt activePartitionCount, Partitioner.DynamicPartitionerForIEnumerable <TSource> .InternalPartitionEnumerable enumerable, bool useSingleChunking)
: base(sharedReader, sharedIndex, useSingleChunking)
{
this.m_hasNoElementsLeft = hasNoElementsLeft;
this.m_sharedLock = sharedLock;
this.m_enumerable = enumerable;
this.m_activePartitionCount = activePartitionCount;
if (this.m_activePartitionCount == null)
{
return;
}
Interlocked.Increment(ref this.m_activePartitionCount.Value);
}
internal InternalPartitionEnumerable(IEnumerator <TSource> sharedReader, bool useSingleChunking, bool isStaticPartitioning)
{
this.m_sharedReader = sharedReader;
this.m_sharedIndex = new Partitioner.SharedLong(-1L);
this.m_hasNoElementsLeft = new Partitioner.SharedBool(false);
this.m_sourceDepleted = new Partitioner.SharedBool(false);
this.m_sharedLock = new object();
this.m_useSingleChunking = useSingleChunking;
if (!this.m_useSingleChunking)
{
this.m_FillBuffer = new KeyValuePair <long, TSource> [(PlatformHelper.ProcessorCount > 4 ? 4: 1) * Partitioner.GetDefaultChunkSize <TSource>()];
}
if (isStaticPartitioning)
{
this.m_activePartitionCount = new Partitioner.SharedInt(0);
}
else
{
this.m_activePartitionCount = (Partitioner.SharedInt)null;
}
}
public bool MoveNext()
{
if (this.m_localOffset == null)
{
this.m_localOffset = new Partitioner.SharedInt(-1);
this.m_currentChunkSize = new Partitioner.SharedInt(0);
this.m_doublingCountdown = 3;
}
if (this.m_localOffset.Value < this.m_currentChunkSize.Value - 1)
{
++this.m_localOffset.Value;
return(true);
}
int requestedChunkSize;
if (this.m_currentChunkSize.Value == 0)
{
requestedChunkSize = 1;
}
else if (this.m_doublingCountdown > 0)
{
requestedChunkSize = this.m_currentChunkSize.Value;
}
else
{
requestedChunkSize = Math.Min(this.m_currentChunkSize.Value * 2, this.m_maxChunkSize);
this.m_doublingCountdown = 3;
}
this.m_doublingCountdown = this.m_doublingCountdown - 1;
if (!this.GrabNextChunk(requestedChunkSize))
{
return(false);
}
this.m_localOffset.Value = 0;
return(true);
}
