public void Enqueue(T value)
{
if (this.writeStatus.ElementList.ValueList[this.writeStatus.WriteArrayIndex].Valid)
{
int num = this.writeStatus.ElementList.ValueList.Length << 1;
if (num == -2147483648)
{
throw new OutOfMemoryException("Can't reserve more entry.");
}
SingleFreeQueue2 <T> .WriteStatus writeStatus = new SingleFreeQueue2 <T> .WriteStatus();
writeStatus.ElementList = new SingleFreeQueue2 <T> .ElementList(num);
writeStatus.ElementList.ValueList[0].Value = value;
writeStatus.ElementList.ValueList[0].Valid = true;
writeStatus.WriteSequence = 1;
writeStatus.WriteArrayIndex = 1;
SingleFreeQueue2 <T> .ElementList elementList = this.writeStatus.ElementList;
this.writeStatus = writeStatus;
elementList.NextList = writeStatus.ElementList;
}
else
{
this.writeStatus.ElementList.ValueList[this.writeStatus.WriteArrayIndex].Value = value;
this.writeStatus.ElementList.ValueList[this.writeStatus.WriteArrayIndex].Valid = true;
this.writeStatus.WriteSequence++;
this.writeStatus.WriteArrayIndex = (this.writeStatus.WriteSequence & this.writeStatus.ElementList.ValueList.Length - 1);
}
}
public void Clear()
{
SingleFreeQueue2 <T> .WriteStatus writeStatus = this.writeStatus;
if (this.readStatus.ElementList != writeStatus.ElementList)
{
this.readStatus.ReadArrayIndex = 0;
this.readStatus.ReadSequence = 0;
while (this.readStatus.ElementList != writeStatus.ElementList)
{
this.readStatus.ElementList = this.readStatus.ElementList.NextList;
}
}
int num = this.readStatus.ElementList.ValueList.Length;
int writeSequence = writeStatus.WriteSequence;
int num2 = writeSequence & num - 1;
if (this.readStatus.ReadArrayIndex < num2)
{
Array.Clear(this.readStatus.ElementList.ValueList, this.readStatus.ReadArrayIndex, writeSequence - this.readStatus.ReadSequence);
}
else if (writeSequence - this.readStatus.ReadSequence > 0)
{
Array.Clear(this.readStatus.ElementList.ValueList, this.readStatus.ReadArrayIndex, num - this.readStatus.ReadArrayIndex);
Array.Clear(this.readStatus.ElementList.ValueList, 0, num2);
}
this.readStatus.ReadSequence = writeSequence;
this.readStatus.ReadArrayIndex = num2;
Array.Clear(this.readStatus.CachedValueList, 0, this.readStatus.CachedValueList.Length);
this.readStatus.Index = 0;
}
private void ExtendThreadQueue(int threadID)
{
int i;
for (i = this.threadLocalQueue.Length * 2; i <= threadID; i *= 2)
{
}
SingleFreeQueue2 <KeyValuePair <int, T> >[] destinationArray = new SingleFreeQueue2 <KeyValuePair <int, T> > [i];
Array.Copy(this.threadLocalQueue, destinationArray, this.threadLocalQueue.Length);
this.threadLocalQueue = destinationArray;
}
private void LoadCache()
{
bool flag = this.readStatus.ElementList.NextList != null;
if (!this.readStatus.ElementList.ValueList[this.readStatus.ReadArrayIndex].Valid)
{
if (!flag)
{
return;
}
this.readStatus.ReadSequence = 0;
this.readStatus.ReadArrayIndex = 0;
this.readStatus.ElementList = this.readStatus.ElementList.NextList;
}
int num = this.readStatus.ElementList.ValueList.Length;
SingleFreeQueue2 <T> .WriteStatus writeStatus = this.writeStatus;
int num2;
if (writeStatus.ElementList == this.readStatus.ElementList)
{
num2 = writeStatus.WriteSequence - this.readStatus.ReadSequence;
if (num2 > this.cacheLength)
{
num2 = this.cacheLength;
}
}
else
{
num2 = this.cacheLength;
}
if (this.readStatus.ReadArrayIndex + num2 > num)
{
num2 = num - this.readStatus.ReadArrayIndex;
}
Array.Copy(this.readStatus.ElementList.ValueList, this.readStatus.ReadArrayIndex, this.readStatus.CachedValueList, 0, num2);
Array.Clear(this.readStatus.ElementList.ValueList, this.readStatus.ReadArrayIndex, num2);
this.readStatus.ReadSequence += num2;
this.readStatus.ReadArrayIndex = (this.readStatus.ReadSequence & num - 1);
}
public void Enqueue(IEnumerable <T> collection)
{
SingleFreeQueue2 <T> .ElementList elementList = null;
SingleFreeQueue2 <T> .ElementList elementList2 = this.writeStatus.ElementList;
int num = this.writeStatus.WriteSequence;
int num2 = this.writeStatus.WriteArrayIndex;
int num3 = 0;
try
{
foreach (T value in collection)
{
if (elementList2.ValueList[num2].Valid)
{
int num4 = elementList2.ValueList.Length << 1;
if (num4 == -2147483648)
{
throw new OutOfMemoryException("Can't reserve more entry.");
}
SingleFreeQueue2 <T> .ElementList elementList3 = new SingleFreeQueue2 <T> .ElementList(num4);
if (elementList == null)
{
elementList = elementList3;
elementList2 = elementList3;
num3 = num - this.writeStatus.WriteSequence;
}
else
{
elementList2.NextList = elementList3;
elementList2 = elementList3;
}
num = 0;
num2 = 0;
}
elementList2.ValueList[num2].Value = value;
elementList2.ValueList[num2].Valid = true;
num++;
num2 = (num & elementList2.ValueList.Length - 1);
}
if (elementList == null)
{
this.writeStatus.WriteSequence = num;
this.writeStatus.WriteArrayIndex = num2;
}
else
{
SingleFreeQueue2 <T> .WriteStatus writeStatus = new SingleFreeQueue2 <T> .WriteStatus();
writeStatus.ElementList = elementList2;
writeStatus.WriteSequence = num;
writeStatus.WriteArrayIndex = num2;
SingleFreeQueue2 <T> .ElementList elementList4 = this.writeStatus.ElementList;
this.writeStatus = writeStatus;
elementList4.NextList = elementList;
}
}
catch (OutOfMemoryException)
{
if (elementList == null)
{
num3 = num - this.writeStatus.WriteSequence;
}
if (this.writeStatus.WriteArrayIndex + num3 > this.writeStatus.ElementList.ValueList.Length)
{
int num5 = this.writeStatus.ElementList.ValueList.Length - this.writeStatus.WriteArrayIndex;
Array.Clear(this.writeStatus.ElementList.ValueList, this.writeStatus.WriteArrayIndex, num5);
Array.Clear(this.writeStatus.ElementList.ValueList, 0, num3 - num5);
}
else
{
Array.Clear(this.writeStatus.ElementList.ValueList, this.writeStatus.WriteArrayIndex, num3);
}
throw;
}
}
public void Enqueue <U>(ArraySegment <U> collection, Converter <U, T> converter)
{
SingleFreeQueue2 <T> .ElementList elementList = null;
SingleFreeQueue2 <T> .ElementList elementList2 = this.writeStatus.ElementList;
int num = this.writeStatus.WriteSequence;
int num2 = this.writeStatus.WriteArrayIndex;
int num3 = 0;
try
{
for (int i = 0; i < collection.Count; i++)
{
if (elementList2.ValueList[num2].Valid)
{
int num4 = elementList2.ValueList.Length << 1;
if (num4 == -2147483648)
{
throw new OutOfMemoryException("Can't reserve more entry.");
}
SingleFreeQueue2 <T> .ElementList elementList3 = new SingleFreeQueue2 <T> .ElementList(num4);
if (elementList == null)
{
elementList = elementList3;
elementList2 = elementList3;
num3 = num - this.writeStatus.WriteSequence;
}
else
{
elementList2.NextList = elementList3;
elementList2 = elementList3;
}
num = 0;
num2 = 0;
}
elementList2.ValueList[num2].Value = converter(collection.Array[i + collection.Offset]);
elementList2.ValueList[num2].Valid = true;
num++;
num2 = (num & elementList2.ValueList.Length - 1);
}
if (elementList == null)
{
this.writeStatus.WriteSequence = num;
this.writeStatus.WriteArrayIndex = num2;
}
else
{
SingleFreeQueue2 <T> .WriteStatus writeStatus = new SingleFreeQueue2 <T> .WriteStatus();
writeStatus.ElementList = elementList2;
writeStatus.WriteSequence = num;
writeStatus.WriteArrayIndex = num2;
SingleFreeQueue2 <T> .ElementList elementList4 = this.writeStatus.ElementList;
this.writeStatus = writeStatus;
elementList4.NextList = elementList;
}
}
catch (OutOfMemoryException)
{
if (elementList == null)
{
num3 = num - this.writeStatus.WriteSequence;
}
if (this.writeStatus.WriteArrayIndex + num3 > this.writeStatus.ElementList.ValueList.Length)
{
int num5 = this.writeStatus.ElementList.ValueList.Length - this.writeStatus.WriteArrayIndex;
Array.Clear(this.writeStatus.ElementList.ValueList, this.writeStatus.WriteArrayIndex, num5);
Array.Clear(this.writeStatus.ElementList.ValueList, 0, num3 - num5);
}
else
{
Array.Clear(this.writeStatus.ElementList.ValueList, this.writeStatus.WriteArrayIndex, num3);
}
throw;
}
}
