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Array based RangeList that caches Address/EndAddress (#2642)

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* Array based RangeList that caches Address/EndAddress

In isolation, this was more than 2x faster than the RangeList that checks using the interface. In practice I'm seeing much better results than I expected. The array is used because checking it is slightly faster than using a list, which loses time to struct copies, but I still want that data locality.

A method has been added to the list to update the cached end address, as some users of the RangeList currently modify it dynamically.

Greatly improves performance in Super Mario Odyssey, Xenoblade and any other GPU limited games.

* Address Feedback
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riperiperi 2021-09-19 13:22:26 +01:00 committed by GitHub
parent b0af010247
commit 7379bc2f39
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4 changed files with 149 additions and 42 deletions
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2
Ryujinx.Graphics.Gpu/Memory/BufferModifiedRangeList.cs
View file

@ -365,7 +365,7 @@ namespace Ryujinx.Graphics.Gpu.Memory
{
lock (_lock)
{
Items.Clear();
Count = 0;
}
}
}

164
Ryujinx.Memory/Range/RangeList.cs
View file

@ -1,6 +1,7 @@
using System;
using System.Collections;
using System.Collections.Generic;
using System.Runtime.CompilerServices;
namespace Ryujinx.Memory.Range
{
@ -10,18 +11,40 @@ namespace Ryujinx.Memory.Range
/// <typeparam name="T">Type of the range.</typeparam>
public class RangeList<T> : IEnumerable<T> where T : IRange
{
private readonly struct RangeItem<TValue> where TValue : IRange
{
public readonly ulong Address;
public readonly ulong EndAddress;
public readonly TValue Value;
public RangeItem(TValue value)
{
Value = value;
Address = value.Address;
EndAddress = value.Address + value.Size;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public bool OverlapsWith(ulong address, ulong endAddress)
{
return Address < endAddress && address < EndAddress;
}
}
private const int ArrayGrowthSize = 32;
private const int BackingGrowthSize = 1024;
protected readonly List<T> Items;
public int Count => Items.Count;
private RangeItem<T>[] _items;
public int Count { get; protected set; }
/// <summary>
/// Creates a new range list.
/// </summary>
public RangeList()
{
Items = new List<T>();
_items = new RangeItem<T>[BackingGrowthSize];
}
/// <summary>
@ -37,7 +60,40 @@ namespace Ryujinx.Memory.Range
index = ~index;
}
Items.Insert(index, item);
Insert(index, new RangeItem<T>(item));
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private void Insert(int index, RangeItem<T> item)
{
if (Count + 1 > _items.Length)
{
Array.Resize(ref _items, _items.Length + ArrayGrowthSize);
}
if (index >= Count)
{
if (index == Count)
{
_items[Count++] = item;
}
}
else
{
Array.Copy(_items, index, _items, index + 1, Count - index);
_items[index] = item;
Count++;
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private void RemoveAt(int index)
{
if (index < --Count)
{
Array.Copy(_items, index + 1, _items, index, Count - index);
}
}
/// <summary>
@ -51,21 +107,21 @@ namespace Ryujinx.Memory.Range
if (index >= 0)
{
while (index > 0 && Items[index - 1].Address == item.Address)
while (index > 0 && _items[index - 1].Address == item.Address)
{
index--;
}
while (index < Items.Count)
while (index < Count)
{
if (Items[index].Equals(item))
if (_items[index].Value.Equals(item))
{
Items.RemoveAt(index);
RemoveAt(index);
return true;
}
if (Items[index].Address > item.Address)
if (_items[index].Address > item.Address)
{
break;
}
@ -77,6 +133,40 @@ namespace Ryujinx.Memory.Range
return false;
}
/// <summary>
/// Updates an item's end address.
/// </summary>
/// <param name="item">The item to be updated</param>
public void UpdateEndAddress(T item)
{
int index = BinarySearch(item.Address);
if (index >= 0)
{
while (index > 0 && _items[index - 1].Address == item.Address)
{
index--;
}
while (index < Count)
{
if (_items[index].Value.Equals(item))
{
_items[index] = new RangeItem<T>(item);
return;
}
if (_items[index].Address > item.Address)
{
break;
}
index++;
}
}
}
/// <summary>
/// Gets the first item on the list overlapping in memory with the specified item.
/// </summary>
@ -103,14 +193,14 @@ namespace Ryujinx.Memory.Range
/// <returns>The overlapping item, or the default value for the type if none found</returns>
public T FindFirstOverlap(ulong address, ulong size)
{
int index = BinarySearch(address, size);
int index = BinarySearch(address, address + size);
if (index < 0)
{
return default(T);
}
return Items[index];
return _items[index].Value;
}
/// <summary>
@ -137,21 +227,23 @@ namespace Ryujinx.Memory.Range
ulong endAddress = address + size;
foreach (T item in Items)
for (int i = 0; i < Count; i++)
{
ref RangeItem<T> item = ref _items[i];
if (item.Address >= endAddress)
{
break;
}
if (item.OverlapsWith(address, size))
if (item.OverlapsWith(address, endAddress))
{
if (outputIndex == output.Length)
{
Array.Resize(ref output, outputIndex + ArrayGrowthSize);
}
output[outputIndex++] = item;
output[outputIndex++] = item.Value;
}
}
@ -192,11 +284,13 @@ namespace Ryujinx.Memory.Range
// when none of the items on the list overlaps with each other.
int outputIndex = 0;
int index = BinarySearch(address, size);
ulong endAddress = address + size;
int index = BinarySearch(address, endAddress);
if (index >= 0)
{
while (index > 0 && Items[index - 1].OverlapsWith(address, size))
while (index > 0 && _items[index - 1].OverlapsWith(address, endAddress))
{
index--;
}
@ -208,9 +302,9 @@ namespace Ryujinx.Memory.Range
Array.Resize(ref output, outputIndex + ArrayGrowthSize);
}
output[outputIndex++] = Items[index++];
output[outputIndex++] = _items[index++].Value;
}
while (index < Items.Count && Items[index].OverlapsWith(address, size));
while (index < Count && _items[index].OverlapsWith(address, endAddress));
}
return outputIndex;
@ -230,14 +324,14 @@ namespace Ryujinx.Memory.Range
if (index >= 0)
{
while (index > 0 && Items[index - 1].Address == address)
while (index > 0 && _items[index - 1].Address == address)
{
index--;
}
while (index < Items.Count)
while (index < Count)
{
T overlap = Items[index++];
ref RangeItem<T> overlap = ref _items[index++];
if (overlap.Address != address)
{
@ -249,7 +343,7 @@ namespace Ryujinx.Memory.Range
Array.Resize(ref output, outputIndex + ArrayGrowthSize);
}
output[outputIndex++] = overlap;
output[outputIndex++] = overlap.Value;
}
}
@ -264,7 +358,7 @@ namespace Ryujinx.Memory.Range
private int BinarySearch(ulong address)
{
int left = 0;
int right = Items.Count - 1;
int right = Count - 1;
while (left <= right)
{
@ -272,7 +366,7 @@ namespace Ryujinx.Memory.Range
int middle = left + (range >> 1);
T item = Items[middle];
ref RangeItem<T> item = ref _items[middle];
if (item.Address == address)
{
@ -296,12 +390,12 @@ namespace Ryujinx.Memory.Range
/// Performs binary search for items overlapping a given memory range.
/// </summary>
/// <param name="address">Start address of the range</param>
/// <param name="size">Size in bytes of the range</param>
/// <param name="endAddress">End address of the range</param>
/// <returns>List index of the item, or complement index of nearest item with lower value on the list</returns>
private int BinarySearch(ulong address, ulong size)
private int BinarySearch(ulong address, ulong endAddress)
{
int left = 0;
int right = Items.Count - 1;
int right = Count - 1;
while (left <= right)
{
@ -309,9 +403,9 @@ namespace Ryujinx.Memory.Range
int middle = left + (range >> 1);
T item = Items[middle];
ref RangeItem<T> item = ref _items[middle];
if (item.OverlapsWith(address, size))
if (item.OverlapsWith(address, endAddress))
{
return middle;
}
@ -331,12 +425,18 @@ namespace Ryujinx.Memory.Range
public IEnumerator<T> GetEnumerator()
{
return Items.GetEnumerator();
for (int i = 0; i < Count; i++)
{
yield return _items[i].Value;
}
}
IEnumerator IEnumerable.GetEnumerator()
{
return Items.GetEnumerator();
for (int i = 0; i < Count; i++)
{
yield return _items[i].Value;
}
}
}
}

13
Ryujinx.Memory/WindowsShared/EmulatedSharedMemoryWindows.cs
View file

@ -41,10 +41,12 @@ namespace Ryujinx.Memory.WindowsShared
return Address < address + size && address < EndAddress;
}
public void ExtendTo(ulong endAddress)
public void ExtendTo(ulong endAddress, RangeList<SharedMemoryMapping> list)
{
EndAddress = endAddress;
Size = endAddress - Address;
list.UpdateEndAddress(this);
}
public void AddBlocks(IEnumerable<int> blocks)
@ -300,14 +302,14 @@ namespace Ryujinx.Memory.WindowsShared
_mappings.Remove(endOverlap);
startOverlap.ExtendTo(endOverlap.EndAddress);
startOverlap.ExtendTo(endOverlap.EndAddress, _mappings);
startOverlap.AddBlocks(blocks);
startOverlap.AddBlocks(endOverlap.Blocks);
}
else if (startOverlap != null)
{
startOverlap.ExtendTo(endAddress);
startOverlap.ExtendTo(endAddress, _mappings);
startOverlap.AddBlocks(blocks);
}
@ -317,7 +319,7 @@ namespace Ryujinx.Memory.WindowsShared
if (endOverlap != null)
{
mapping.ExtendTo(endOverlap.EndAddress);
mapping.ExtendTo(endOverlap.EndAddress, _mappings);
mapping.AddBlocks(endOverlap.Blocks);
@ -381,6 +383,7 @@ namespace Ryujinx.Memory.WindowsShared
if (mapping.EndAddress > endAddress)
{
var newMapping = (SharedMemoryMapping)mapping.Split(endAddress);
_mappings.UpdateEndAddress(mapping);
_mappings.Add(newMapping);
if ((endAddress & MappingMask) != 0)
@ -400,7 +403,9 @@ namespace Ryujinx.Memory.WindowsShared
// If the first region starts before the decommit address, split it by modifying its end address.
if (mapping.Address < address)
{
var oldMapping = mapping;
mapping = (SharedMemoryMapping)mapping.Split(address);
_mappings.UpdateEndAddress(oldMapping);
if ((address & MappingMask) != 0)
{

12
Ryujinx.Memory/WindowsShared/PlaceholderList.cs
View file

@ -32,10 +32,12 @@ namespace Ryujinx.Memory.WindowsShared
return Address < address + size && address < EndAddress;
}
public void ExtendTo(ulong end)
public void ExtendTo(ulong end, RangeList<PlaceholderBlock> list)
{
EndAddress = end;
Size = end - Address;
list.UpdateEndAddress(this);
}
}
@ -126,13 +128,13 @@ namespace Ryujinx.Memory.WindowsShared
if (overlapStart && first.IsGranular)
{
first.ExtendTo(endId);
first.ExtendTo(endId, _placeholders);
}
else
{
if (overlapStart)
{
first.ExtendTo(id);
first.ExtendTo(id, _placeholders);
}
_placeholders.Add(new PlaceholderBlock(id, endId - id, true));
@ -189,7 +191,7 @@ namespace Ryujinx.Memory.WindowsShared
if (block.Address < id && blockEnd > id)
{
block.ExtendTo(id);
block.ExtendTo(id, _placeholders);
extendBlock = null;
}
else
@ -223,7 +225,7 @@ namespace Ryujinx.Memory.WindowsShared
else
{
extendFrom = extendBlock.Address;
extendBlock.ExtendTo(block.IsGranular ? extent : block.EndAddress);
extendBlock.ExtendTo(block.IsGranular ? extent : block.EndAddress, _placeholders);
}
if (block.IsGranular)