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Merge from branch giga

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Nitload
2025-08-31 10:42:51 +08:00
parent 1fc687f7d0
commit 1a0ccdd8cb
1619 changed files with 2812 additions and 733136 deletions
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StgSharp.Common/HighPerformance/Memory/SlabAllocator.Chunked.cs
+15 -42
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@@ -32,21 +32,17 @@ using StgSharp.Threading;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace StgSharp.HighPerformance.Memory
{
internal sealed unsafe class ChunkedSlabAllocator<T> : SlabAllocator<T> where T: unmanaged
{
private readonly BufferExpansionLock _lock = new();
private ConcurrentStackBuffer<nuint> _buffers;
private ConcurrentStackBuffer<nuint> _recycle;
private BufferStack<nuint> _buffers;
private BufferStack<nuint> _recycle;
private readonly int _elementSize = Unsafe.SizeOf<T>();
private nuint _currentBuffer;
@@ -67,7 +63,7 @@ namespace StgSharp.HighPerformance.Memory
span[i] = _currentBuffer + (nuint)(i * _elementSize);
}
_buffers = new(4);
_recycle = new(span);
_recycle = BufferStackBuilder.Create(span);
_currentCapacity = count;
_currentIndex = (nuint)initCount;
}
@@ -77,42 +73,20 @@ namespace StgSharp.HighPerformance.Memory
if (_recycle.TryPop(out nuint handle)) {
return handle;
}
while (true)
nuint bufferHandle = _currentBuffer;
nuint curIndex = _currentIndex;
if (curIndex >= _currentCapacity)
{
nuint bufferHandle = Volatile.Read(ref _currentBuffer);
nuint curIndex = Volatile.Read(ref _currentIndex);
_lock.EnterMetaDataRead();
try
{
if (curIndex >= _currentCapacity)
{
_lock.ExitMetaDataRead();
_lock.EnterExpansionProcess();
try
{
nuint cap = Volatile.Read(ref _currentCapacity);
nuint newBuffer = (nuint)NativeMemory.Alloc(cap * (nuint)_elementSize);
_buffers.Push(bufferHandle);
_ = Interlocked.Exchange(ref _currentBuffer, newBuffer);
_ = Interlocked.Exchange(ref _currentIndex, 0);
}
finally
{
_lock.ExitExpansionProcess();
}
}
curIndex = Volatile.Read(ref _currentIndex);
_ = Interlocked.Add(
ref Unsafe.As<nuint, ulong>(ref _currentIndex), (ulong)_elementSize);
return _currentBuffer + ((nuint)_elementSize * curIndex);
}
finally
{
if (_lock.IsThreadReadingMetaData) {
_lock.ExitMetaDataRead();
}
}
nuint cap = _currentCapacity;
nuint newBuffer = (nuint)NativeMemory.Alloc(cap * (nuint)_elementSize);
_buffers.Push(bufferHandle);
_currentBuffer = newBuffer;
_currentIndex = 0;
}
curIndex = _currentIndex;
_ = Interlocked.Add(
ref Unsafe.As<nuint, ulong>(ref _currentIndex), (ulong)_elementSize);
return _currentBuffer + ((nuint)_elementSize * curIndex);
}
public override void Dispose()
@@ -121,7 +95,6 @@ namespace StgSharp.HighPerformance.Memory
while (_buffers.TryPop(out nuint buffer)) {
NativeMemory.Free((void*)buffer);
}
_lock.Dispose();
_buffers.Dispose();
_recycle.Dispose();
}