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Make Vulkan memory allocator actually thread safe (#5575)

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* Make Vulkan memory allocator actually thread safe

* Make free thread safe too

* PR feedback
This commit is contained in:
gdkchan 2023-09-25 20:50:06 -03:00 committed by GitHub
parent ddc9ae2a83
commit 4a835bb2b9
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 74 additions and 24 deletions
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33
src/Ryujinx.Graphics.Vulkan/MemoryAllocator.cs
View file

@ -1,6 +1,7 @@
using Silk.NET.Vulkan;
using System;
using System.Collections.Generic;
using System.Threading;
namespace Ryujinx.Graphics.Vulkan
{
@ -13,6 +14,7 @@ namespace Ryujinx.Graphics.Vulkan
private readonly Device _device;
private readonly List<MemoryAllocatorBlockList> _blockLists;
private readonly int _blockAlignment;
private readonly ReaderWriterLockSlim _lock;
public MemoryAllocator(Vk api, VulkanPhysicalDevice physicalDevice, Device device)
{
@ -21,6 +23,7 @@ namespace Ryujinx.Graphics.Vulkan
_device = device;
_blockLists = new List<MemoryAllocatorBlockList>();
_blockAlignment = (int)Math.Min(int.MaxValue, MaxDeviceMemoryUsageEstimate / _physicalDevice.PhysicalDeviceProperties.Limits.MaxMemoryAllocationCount);
_lock = new(LockRecursionPolicy.NoRecursion);
}
public MemoryAllocation AllocateDeviceMemory(
@ -40,21 +43,37 @@ namespace Ryujinx.Graphics.Vulkan
private MemoryAllocation Allocate(int memoryTypeIndex, ulong size, ulong alignment, bool map, bool isBuffer)
{
for (int i = 0; i < _blockLists.Count; i++)
_lock.EnterReadLock();
try
{
var bl = _blockLists[i];
if (bl.MemoryTypeIndex == memoryTypeIndex && bl.ForBuffer == isBuffer)
for (int i = 0; i < _blockLists.Count; i++)
{
lock (bl)
var bl = _blockLists[i];
if (bl.MemoryTypeIndex == memoryTypeIndex && bl.ForBuffer == isBuffer)
{
return bl.Allocate(size, alignment, map);
}
}
}
finally
{
_lock.ExitReadLock();
}
var newBl = new MemoryAllocatorBlockList(_api, _device, memoryTypeIndex, _blockAlignment, isBuffer);
_blockLists.Add(newBl);
return newBl.Allocate(size, alignment, map);
_lock.EnterWriteLock();
try
{
var newBl = new MemoryAllocatorBlockList(_api, _device, memoryTypeIndex, _blockAlignment, isBuffer);
_blockLists.Add(newBl);
return newBl.Allocate(size, alignment, map);
}
finally
{
_lock.ExitWriteLock();
}
}
internal int FindSuitableMemoryTypeIndex(

65
src/Ryujinx.Graphics.Vulkan/MemoryAllocatorBlockList.cs
View file

@ -3,6 +3,7 @@ using Silk.NET.Vulkan;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Threading;
namespace Ryujinx.Graphics.Vulkan
{
@ -166,6 +167,8 @@ namespace Ryujinx.Graphics.Vulkan
private readonly int _blockAlignment;
private readonly ReaderWriterLockSlim _lock;
public MemoryAllocatorBlockList(Vk api, Device device, int memoryTypeIndex, int blockAlignment, bool forBuffer)
{
_blocks = new List<Block>();
@ -174,6 +177,7 @@ namespace Ryujinx.Graphics.Vulkan
MemoryTypeIndex = memoryTypeIndex;
ForBuffer = forBuffer;
_blockAlignment = blockAlignment;
_lock = new(LockRecursionPolicy.NoRecursion);
}
public unsafe MemoryAllocation Allocate(ulong size, ulong alignment, bool map)
@ -184,19 +188,28 @@ namespace Ryujinx.Graphics.Vulkan
throw new ArgumentOutOfRangeException(nameof(alignment), $"Invalid alignment 0x{alignment:X}.");
}
for (int i = 0; i < _blocks.Count; i++)
{
var block = _blocks[i];
_lock.EnterReadLock();
if (block.Mapped == map && block.Size >= size)
try
{
for (int i = 0; i < _blocks.Count; i++)
{
ulong offset = block.Allocate(size, alignment);
if (offset != InvalidOffset)
var block = _blocks[i];
if (block.Mapped == map && block.Size >= size)
{
return new MemoryAllocation(this, block, block.Memory, GetHostPointer(block, offset), offset, size);
ulong offset = block.Allocate(size, alignment);
if (offset != InvalidOffset)
{
return new MemoryAllocation(this, block, block.Memory, GetHostPointer(block, offset), offset, size);
}
}
}
}
finally
{
_lock.ExitReadLock();
}
ulong blockAlignedSize = BitUtils.AlignUp(size, (ulong)_blockAlignment);
@ -244,14 +257,23 @@ namespace Ryujinx.Graphics.Vulkan
if (block.IsTotallyFree())
{
for (int i = 0; i < _blocks.Count; i++)
_lock.EnterWriteLock();
try
{
if (_blocks[i] == block)
for (int i = 0; i < _blocks.Count; i++)
{
_blocks.RemoveAt(i);
break;
if (_blocks[i] == block)
{
_blocks.RemoveAt(i);
break;
}
}
}
finally
{
_lock.ExitWriteLock();
}
block.Destroy(_api, _device);
}
@ -259,13 +281,22 @@ namespace Ryujinx.Graphics.Vulkan
private void InsertBlock(Block block)
{
int index = _blocks.BinarySearch(block);
if (index < 0)
{
index = ~index;
}
_lock.EnterWriteLock();
_blocks.Insert(index, block);
try
{
int index = _blocks.BinarySearch(block);
if (index < 0)
{
index = ~index;
}
_blocks.Insert(index, block);
}
finally
{
_lock.ExitWriteLock();
}
}
public void Dispose()