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TSR Berry 2023-04-08 01:22:00 +02:00 • committed by Mary
parent cd124bda58
commit cee7121058
3466 changed files with 55 additions and 55 deletions
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src/Ryujinx.Graphics.Vulkan/MemoryAllocatorBlockList.cs Normal file
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using Ryujinx.Common;
using Silk.NET.Vulkan;
using System;
using System.Collections.Generic;
using System.Diagnostics;
namespace Ryujinx.Graphics.Vulkan
{
class MemoryAllocatorBlockList : IDisposable
{
private const ulong InvalidOffset = ulong.MaxValue;
public class Block : IComparable<Block>
{
public DeviceMemory Memory { get; private set; }
public IntPtr HostPointer { get; private set; }
public ulong Size { get; }
public bool Mapped => HostPointer != IntPtr.Zero;
private readonly struct Range : IComparable<Range>
{
public ulong Offset { get; }
public ulong Size { get; }
public Range(ulong offset, ulong size)
{
Offset = offset;
Size = size;
}
public int CompareTo(Range other)
{
return Offset.CompareTo(other.Offset);
}
}
private readonly List<Range> _freeRanges;
public Block(DeviceMemory memory, IntPtr hostPointer, ulong size)
{
Memory = memory;
HostPointer = hostPointer;
Size = size;
_freeRanges = new List<Range>
{
new Range(0, size)
};
}
public ulong Allocate(ulong size, ulong alignment)
{
for (int i = 0; i < _freeRanges.Count; i++)
{
var range = _freeRanges[i];
ulong alignedOffset = BitUtils.AlignUp<ulong>(range.Offset, alignment);
ulong sizeDelta = alignedOffset - range.Offset;
ulong usableSize = range.Size - sizeDelta;
if (sizeDelta < range.Size && usableSize >= size)
{
_freeRanges.RemoveAt(i);
if (sizeDelta != 0)
{
InsertFreeRange(range.Offset, sizeDelta);
}
ulong endOffset = range.Offset + range.Size;
ulong remainingSize = endOffset - (alignedOffset + size);
if (remainingSize != 0)
{
InsertFreeRange(endOffset - remainingSize, remainingSize);
}
return alignedOffset;
}
}
return InvalidOffset;
}
public void Free(ulong offset, ulong size)
{
InsertFreeRangeComingled(offset, size);
}
private void InsertFreeRange(ulong offset, ulong size)
{
var range = new Range(offset, size);
int index = _freeRanges.BinarySearch(range);
if (index < 0)
{
index = ~index;
}
_freeRanges.Insert(index, range);
}
private void InsertFreeRangeComingled(ulong offset, ulong size)
{
ulong endOffset = offset + size;
var range = new Range(offset, size);
int index = _freeRanges.BinarySearch(range);
if (index < 0)
{
index = ~index;
}
if (index < _freeRanges.Count && _freeRanges[index].Offset == endOffset)
{
endOffset = _freeRanges[index].Offset + _freeRanges[index].Size;
_freeRanges.RemoveAt(index);
}
if (index > 0 && _freeRanges[index - 1].Offset + _freeRanges[index - 1].Size == offset)
{
offset = _freeRanges[index - 1].Offset;
_freeRanges.RemoveAt(--index);
}
range = new Range(offset, endOffset - offset);
_freeRanges.Insert(index, range);
}
public bool IsTotallyFree()
{
if (_freeRanges.Count == 1 && _freeRanges[0].Size == Size)
{
Debug.Assert(_freeRanges[0].Offset == 0);
return true;
}
return false;
}
public int CompareTo(Block other)
{
return Size.CompareTo(other.Size);
}
public unsafe void Destroy(Vk api, Device device)
{
if (Mapped)
{
api.UnmapMemory(device, Memory);
HostPointer = IntPtr.Zero;
}
if (Memory.Handle != 0)
{
api.FreeMemory(device, Memory, null);
Memory = default;
}
}
}
private readonly List<Block> _blocks;
private readonly Vk _api;
private readonly Device _device;
public int MemoryTypeIndex { get; }
public bool ForBuffer { get; }
private readonly int _blockAlignment;
public MemoryAllocatorBlockList(Vk api, Device device, int memoryTypeIndex, int blockAlignment, bool forBuffer)
{
_blocks = new List<Block>();
_api = api;
_device = device;
MemoryTypeIndex = memoryTypeIndex;
ForBuffer = forBuffer;
_blockAlignment = blockAlignment;
}
public unsafe MemoryAllocation Allocate(ulong size, ulong alignment, bool map)
{
// Ensure we have a sane alignment value.
if ((ulong)(int)alignment != alignment || (int)alignment <= 0)
{
throw new ArgumentOutOfRangeException(nameof(alignment), $"Invalid alignment 0x{alignment:X}.");
}
for (int i = 0; i < _blocks.Count; i++)
{
var block = _blocks[i];
if (block.Mapped == map && block.Size >= size)
{
ulong offset = block.Allocate(size, alignment);
if (offset != InvalidOffset)
{
return new MemoryAllocation(this, block, block.Memory, GetHostPointer(block, offset), offset, size);
}
}
}
ulong blockAlignedSize = BitUtils.AlignUp<ulong>(size, (ulong)_blockAlignment);
var memoryAllocateInfo = new MemoryAllocateInfo()
{
SType = StructureType.MemoryAllocateInfo,
AllocationSize = blockAlignedSize,
MemoryTypeIndex = (uint)MemoryTypeIndex
};
_api.AllocateMemory(_device, memoryAllocateInfo, null, out var deviceMemory).ThrowOnError();
IntPtr hostPointer = IntPtr.Zero;
if (map)
{
unsafe
{
void* pointer = null;
_api.MapMemory(_device, deviceMemory, 0, blockAlignedSize, 0, ref pointer).ThrowOnError();
hostPointer = (IntPtr)pointer;
}
}
var newBlock = new Block(deviceMemory, hostPointer, blockAlignedSize);
InsertBlock(newBlock);
ulong newBlockOffset = newBlock.Allocate(size, alignment);
Debug.Assert(newBlockOffset != InvalidOffset);
return new MemoryAllocation(this, newBlock, deviceMemory, GetHostPointer(newBlock, newBlockOffset), newBlockOffset, size);
}
private static IntPtr GetHostPointer(Block block, ulong offset)
{
if (block.HostPointer == IntPtr.Zero)
{
return IntPtr.Zero;
}
return (IntPtr)((nuint)(nint)block.HostPointer + offset);
}
public unsafe void Free(Block block, ulong offset, ulong size)
{
block.Free(offset, size);
if (block.IsTotallyFree())
{
for (int i = 0; i < _blocks.Count; i++)
{
if (_blocks[i] == block)
{
_blocks.RemoveAt(i);
break;
}
}
block.Destroy(_api, _device);
}
}
private void InsertBlock(Block block)
{
int index = _blocks.BinarySearch(block);
if (index < 0)
{
index = ~index;
}
_blocks.Insert(index, block);
}
public unsafe void Dispose()
{
for (int i = 0; i < _blocks.Count; i++)
{
_blocks[i].Destroy(_api, _device);
}
}
}
}