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predict method of l4

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This commit is contained in:
Youmu Liu
2026-10-19 18:38:43 +08:00
parent d1efb15e3f
commit e349bcc4dd
7 changed files with 195 additions and 62 deletions
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src/Nitload.Common/HighPerformance/Memory/L4.CacheLine.cs
+39 -3
View File
@@ -6,6 +6,7 @@
// -----------------------------------------------------------------------------
using System.Runtime.InteropServices;
using System.Xml.Serialization;
namespace Nitload.Common.HighPerformance.Memory
{
@@ -27,10 +28,38 @@ namespace Nitload.Common.HighPerformance.Memory
internal const uint MaxBufferSize = 0xFFFFFFFF - 64U;
[FieldOffset(16)] internal AllocationState State;
[FieldOffset(31)] internal AllocationState State;
public static uint SizeOf { get; } = (uint)Unsafe.SizeOf<CacheLineMetadata>();
/// <summary>
/// only available in L4.Predict()
/// </summary>
public void CheckCount()
{
uint count = Volatile.Read(ref ConsumeCount);
if (ushort.MaxValue < count)
{
uint delta = unchecked(0u - count);
_ = Interlocked.Add(ref ConsumeCount, delta);
_ = Interlocked.Add(ref PredictCount, delta);
}
}
public void IncreaseConsumeCount()
{
unchecked {
_ = Interlocked.Increment(ref ConsumeCount);
}
}
public void IncreasePredictCount()
{
unchecked {
_ = Interlocked.Increment(ref PredictCount);
}
}
#region tlsf linked list
[FieldOffset(0)] public short NextLevel;
@@ -42,8 +71,15 @@ namespace Nitload.Common.HighPerformance.Memory
#region buffer
[FieldOffset(8)] public uint PositionMask;
[FieldOffset(12)] public uint SizeMask;
[FieldOffset(8)] public ulong Position;
[FieldOffset(16)] public uint SizeMask;
#endregion
#region count
[FieldOffset(20)] public uint PredictCount;
[FieldOffset(24)] public uint ConsumeCount;
#endregion
}