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Use FillChar for debug fill patterns of 40 bytes and larger #96

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Use FillChar for debug fill patterns of 40 bytes and larger #96

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15 changes: 15 additions & 0 deletions FastMM5.pas
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Original file line number Diff line number Diff line change
Expand Up @@ -4243,6 +4243,14 @@ procedure FillFreedDebugBlockWithDebugPattern(APDebugBlockHeader: PFastMM_DebugB
LByteOffset := APDebugBlockHeader.UserSize;
LPUserArea := PByte(APDebugBlockHeader) + CDebugBlockHeaderSize;

{Use FillChar above the measured crossover and retain the scalar path for smaller blocks.}
if LByteOffset >= 40 then
begin
FillChar(LPUserArea^, LByteOffset, CDebugFillByteFreedBlock);
PPointerArray(LPUserArea)[0] := TFastMM_FreedObject;
Exit;
end;

{Store a pointer to the freed object class if the block is large enough.}
if LByteOffset >= CTObjectInstanceSize then
begin
Expand Down Expand Up @@ -4290,6 +4298,13 @@ procedure FillAllocatedDebugBlockWithDebugPattern(APDebugBlockHeader: PFastMM_De
LByteOffset := APDebugBlockHeader.UserSize;
LPUserArea := PByte(APDebugBlockHeader) + CDebugBlockHeaderSize;

{Use FillChar above the measured crossover and retain the scalar path for smaller blocks.}
if LByteOffset >= 40 then
begin
FillChar(LPUserArea^, LByteOffset, CDebugFillByteAllocatedBlock);
Exit;
end;

if LByteOffset and 1 <> 0 then
begin
Dec(LByteOffset);
Expand Down