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R2RDump: normalize GC info totalInterruptibleLength #112003

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R2RDump: normalize GC info totalInterruptibleLength #112003

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baa6a9b
R2RDump: normalize totalInterruptibleLength
tomeksowi Jan 30, 2025
f3fe969
Early exit from GetTransitions like in gcinfodecoder.cpp
tomeksowi Jan 30, 2025
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11 changes: 9 additions & 2 deletions src/coreclr/tools/aot/ILCompiler.Reflection.ReadyToRun/Amd64/GcInfo.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -525,16 +525,21 @@ private Dictionary<int, List<BaseGcTransition>> GetTransitions(byte[] image, ref
int totalInterruptibleLength = 0;
if (NumInterruptibleRanges == 0)
{
totalInterruptibleLength = CodeLength;
totalInterruptibleLength = _gcInfoTypes.NormalizeCodeLength(CodeLength);
}
else
{
foreach (InterruptibleRange range in InterruptibleRanges)
{
totalInterruptibleLength += (int)(range.StopOffset - range.StartOffset);
uint normStart = _gcInfoTypes.NormalizeCodeOffset(range.StartOffset);
uint normStop = _gcInfoTypes.NormalizeCodeOffset(range.StopOffset);
totalInterruptibleLength += (int)(normStop - normStart);
}
}

if (SlotTable.NumTracked == 0)
return new Dictionary<int, List<BaseGcTransition>>();

int numChunks = (totalInterruptibleLength + _gcInfoTypes.NUM_NORM_CODE_OFFSETS_PER_CHUNK - 1) / _gcInfoTypes.NUM_NORM_CODE_OFFSETS_PER_CHUNK;
int numBitsPerPointer = (int)NativeReader.DecodeVarLengthUnsigned(image, _gcInfoTypes.POINTER_SIZE_ENCBASE, ref bitOffset);
if (numBitsPerPointer == 0)
Expand Down Expand Up @@ -629,6 +634,7 @@ private uint GetNumCouldBeLiveSlots(byte[] image, ref int bitOffset)
fSkip = !fSkip;
fReport = !fReport;
}
Debug.Assert(readSlots == numTracked);
}
else
{
Expand All @@ -642,6 +648,7 @@ private uint GetNumCouldBeLiveSlots(byte[] image, ref int bitOffset)
numCouldBeLiveSlots++;
}
}
Debug.Assert(numCouldBeLiveSlots > 0);
return numCouldBeLiveSlots;
}

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