toybchan/minimal-heap
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performance speedup

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toybchan
2026-06-08 07:47:44 +02:00
parent 5a84b57b25
commit c134adc3b1
3 changed files with 25 additions and 5 deletions
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22
minimal_heap.c
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@@ -24,6 +24,7 @@ MIHP_HeapInfo* MIHP_CreateHeap(MIHP_HeapConfig config)
heap->Config = config;
heap->FirstArea = MIHP_CreateHeapMemoryArea(heap, config.MinimalMemoryAreaSize);
heap->LastAllocationArea = heap->FirstArea;
if (heap->FirstArea == NULL)
{
MIHP_PlatformFreeMemory(heap, sizeof(MIHP_HeapInfo));
@@ -70,12 +71,24 @@ void* MIHP_Allocate(MIHP_HeapInfo* heap, size_t size)
MIHP_LOCK_HEAP(&heap->HeapLock);
bool checkedLastAllocationArea = false;
MIHP_HeapMemoryAreaHeader* nextArea = heap->FirstArea;
while (nextArea)
{
MIHP_HeapMemoryAreaHeader* currentArea = nextArea;
MIHP_HeapMemoryAreaHeader* currentArea = NULL;
if (!checkedLastAllocationArea)
{
currentArea = heap->LastAllocationArea;
checkedLastAllocationArea = true;
}
else
{
currentArea = nextArea;
nextArea = currentArea->NextArea;
}
MIHP_ValidateHeapMemoryAreaHeader(heap, currentArea);
nextArea = currentArea->NextArea;
if (currentArea->NumOccupiedSegments == currentArea->NumSegments)
continue;
@@ -108,6 +121,8 @@ void* MIHP_Allocate(MIHP_HeapInfo* heap, size_t size)
currentArea->Checksum = MIHP_GenerateHeapMemoryAreaChecksum(currentArea);
heap->Stats.NumTotalOccupiedSegments++;
heap->Stats.TotalOccupiedSize += targetSegment->OccupiedSize;
heap->LastAllocationArea = currentArea;
MIHP_UNLOCK_HEAP(&heap->HeapLock);
@@ -163,6 +178,8 @@ bool MIHP_Free(MIHP_HeapInfo* heap, void* ptr)
MIHP_HeapMemoryAreaHeader* area = segment->OwningMemoryArea;
MIHP_ValidateHeapMemoryAreaHeader(heap, area);
size_t occupiedSize = segment->OccupiedSize;
segment->OccupiedSize = 0;
segment->Checksum = MIHP_GenerateHeapSegmentChecksum(segment);
@@ -170,6 +187,7 @@ bool MIHP_Free(MIHP_HeapInfo* heap, void* ptr)
area->Checksum = MIHP_GenerateHeapMemoryAreaChecksum(area);
heap->Stats.NumTotalOccupiedSegments--;
heap->Stats.TotalOccupiedSize -= occupiedSize;
if (area->NumOccupiedSegments == 0 && heap->Stats.NumMemoryAreas > 1)
{