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L4 completely add support for multi predictor, working on ver 5 mat para

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This commit is contained in:
Youmu Liu
2026-04-10 18:05:40 +08:00
parent b5bee5c442
commit 8a66c1697a
16 changed files with 602 additions and 191 deletions
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StgSharp.Common/HighPerformance/Memory/L4.Evict.cs
+26 -17
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@@ -62,29 +62,38 @@ namespace StgSharp.HighPerformance.Memory
int remain = count;
Vector128<byte> three = Vector128.Create((byte)0x03);
byte* p = (byte*)_eviction;
for (int i = 0; (i < CacheLineCount) && (remain > 0); i += 16)
_predictors.RequestSpanOperation();
Span<IL4Predict> pSpan = _predictors.AsSpan();
try
{
int evictMask = _intrinsic.ScanEvict(p + i, three);
while ((evictMask != 0) && (remain > 0))
for (int i = 0; (i < CacheLineCount) && (remain > 0); i += 16)
{
int bitPos = BitOperations.TrailingZeroCount(evictMask);
int index = bitPos + i;
CacheLineHead* head = &_head[index];
if (Interlocked.CompareExchange(ref head->_refCount, int.MinValue, 0) == 0)
int evictMask = _intrinsic.ScanEvict(p + i, three);
while ((evictMask != 0) && (remain > 0))
{
// EvictLine(i + index);
_ = _map.TryRemove(head->_origin, out _);
int id = (int)head->_predictor;
IL4Predict predict = _predictions[id] ??
throw new L4PredictUnregisteredException(id);
predict.WriteBack(head->_origin, head->_profile, new ReadOnlySpan<byte>((byte*)head->_address, Unsafe.SizeOf<CacheLineData>()));
RecycleLine(index);
remain--;
int bitPos = BitOperations.TrailingZeroCount(evictMask);
int index = bitPos + i;
CacheLineHead* head = &_head[index];
if (Interlocked.CompareExchange(ref head->_refCount, int.MinValue, 0) == 0)
{
// EvictLine(i + index);
_ = _map.TryRemove(head->_origin, out _);
int id = (int)head->_predictor;
IL4Predict predict = pSpan[id] ??
throw new L4PredictUnregisteredException(id);
predict.WriteBack(head->_origin, head->_profile, new ReadOnlySpan<byte>((byte*)head->_address, Unsafe.SizeOf<CacheLineData>()));
RecycleLine(index);
remain--;
}
evictMask &= evictMask - 1;
}
evictMask &= evictMask - 1;
}
return remain;
}
finally
{
_predictors.ReleaseSpanOperation();
}
return remain;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]