toybchan/minimal-heap
1
0
Fork 0
mirror of https://github.com/ToyB-Chan/minimal-heap.git synced 2026-07-13 21:51:16 +02:00
Code Issues Packages Projects Releases Wiki Activity

performance speedup

Browse Source
This commit is contained in:
toybchan
2026-06-08 07:47:44 +02:00
parent 5a84b57b25
commit c134adc3b1
3 changed files with 25 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
minimal_heap.c
View File

@@ -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)
{

4
minimal_heap.h
View File

@@ -28,6 +28,7 @@ typedef struct _MIHP_HeapStats
size_t NumTotalSegments;
size_t NumTotalOccupiedSegments;
size_t TotalSize;
size_t TotalOccupiedSize;
} MIHP_HeapStats;
// This structs size must be multiple of 8
@@ -73,7 +74,7 @@ typedef struct _MIHP_HeapCorruptionInfo
} MIHP_HeapCorruptionInfo;
/* Hooks to be implemented by the library user */
void* MIHP_PlatformRequestMemory(size_t size); // Alignment must at least be alingment of size_t
void* MIHP_PlatformRequestMemory(size_t size); // Alignment must at least be alignment of size_t
bool MIHP_PlatformFreeMemory(void* ptr, size_t size);
void MIHP_PlatformOnHeapCorruptionDetected(MIHP_HeapCorruptionInfo info);
/* === */
@@ -93,6 +94,7 @@ typedef struct _MIHP_HeapInfo
MIHP_HeapConfig Config;
MIHP_HeapStats Stats;
MIHP_HeapMemoryAreaHeader* FirstArea;
MIHP_HeapMemoryAreaHeader* LastSuccessfulAllocationArea;
MIHP_HEAP_LOCK_TYPE HeapLock;
} MIHP_HeapInfo;

4
minimal_heap_test.c
View File

@@ -21,7 +21,7 @@ void MIHP_PlatformOnHeapCorruptionDetected(MIHP_HeapCorruptionInfo info)
__debugbreak();
}
#define NUM_ALLOCATIONS (4096 * 512)
#define NUM_ALLOCATIONS (4096 * 128)
void* myptrs[NUM_ALLOCATIONS] = { 0 };
@@ -31,7 +31,7 @@ int main()
config.AllocationInitialValue = 0xbe;
config.AllocationAlignment = 16;
config.MinimalMemoryAreaSize = 4096 * 32;
config.MaximalMemoryAreaSize = 4096ull * 4096ull * 4096ull;
config.MaximalMemoryAreaSize = 4096ull * 4096ull;
MIHP_HeapInfo* myHeap = MIHP_CreateHeap(config);
for (int i = 0; i < NUM_ALLOCATIONS; i++)