ryujinx/Ryujinx.HLE/HOS/Kernel/Memory/KPageList.cs

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using Ryujinx.HLE.HOS.Kernel.Common;
using System.Collections;
using System.Collections.Generic;
namespace Ryujinx.HLE.HOS.Kernel.Memory
{
class KPageList : IEnumerable<KPageNode>
{
public LinkedList<KPageNode> Nodes { get; private set; }
public KPageList()
{
Nodes = new LinkedList<KPageNode>();
}
public KernelResult AddRange(ulong address, ulong pagesCount)
{
if (pagesCount != 0)
{
if (Nodes.Last != null)
{
KPageNode lastNode = Nodes.Last.Value;
if (lastNode.Address + lastNode.PagesCount * KMemoryManager.PageSize == address)
{
address = lastNode.Address;
pagesCount += lastNode.PagesCount;
Nodes.RemoveLast();
}
}
Nodes.AddLast(new KPageNode(address, pagesCount));
}
return KernelResult.Success;
}
public ulong GetPagesCount()
{
ulong sum = 0;
foreach (KPageNode node in Nodes)
{
sum += node.PagesCount;
}
return sum;
}
public bool IsEqual(KPageList other)
{
LinkedListNode<KPageNode> thisNode = Nodes.First;
LinkedListNode<KPageNode> otherNode = other.Nodes.First;
while (thisNode != null && otherNode != null)
{
if (thisNode.Value.Address != otherNode.Value.Address ||
thisNode.Value.PagesCount != otherNode.Value.PagesCount)
{
return false;
}
thisNode = thisNode.Next;
otherNode = otherNode.Next;
}
return thisNode == null && otherNode == null;
}
public IEnumerator<KPageNode> GetEnumerator()
{
return Nodes.GetEnumerator();
}
IEnumerator IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
}
}