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tweaked growth rate

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toybchan
2026-06-10 07:19:33 +02:00
parent 8a148cf489
commit e507521bf8
3 changed files with 10 additions and 8 deletions
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6
minimal_heap.h
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@@ -1,4 +1,4 @@
/* Version 1.7 */
/* Version 1.8 */
#ifndef __MINIMAL_HEAP_H__
#define __MINIMAL_HEAP_H__
@@ -169,8 +169,8 @@ void MIHP_ValidateHeapSegmentHeader(const MIHP_Heap* heap, const MIHP_HeapSegmen
size_t MIHP_GetMinimalPayloadSize(const MIHP_Heap* heap);
/* */
#if MIHP_IMPLEMENTATION
#include "minimal_heap_implementation.inl"
#endif
#if MIHP_IMPLEMENTATION
#include "minimal_heap_implementation.inl"
#endif

7
minimal_heap_implementation.inl
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@@ -8,7 +8,7 @@ MIHP_HeapConfig MIHP_MakeDefaultConfigPreset()
MIHP_HeapConfig cfg = { 0 };
cfg.MinMemoryAreaSize = 4096 * 32;
cfg.MaxMemoryAreaSize = 4096 * 4096 * 8;
cfg.MaxMemoryAreaSize = 4096 * 4096 * 128;
cfg.MinTotalTraversalsBeforeHeapExpansion = 10'000;
cfg.MinHeapTraversalPercentToExpand = 80;
@@ -187,10 +187,11 @@ void* MIHP_Allocate(MIHP_Heap* heap, size_t size)
/* No free segment found (in time), allocate new area */
size_t newAreaSize = heap->Stats.TotalSize;
size_t newAreaSize = heap->Stats.TotalSize / 4; // growth-rate of 1.25
while (newAreaSize < size)
newAreaSize = MIHP_MIN(heap->Config.MaxMemoryAreaSize, newAreaSize * 2);
newAreaSize = MIHP_MIN(heap->Config.MaxMemoryAreaSize, newAreaSize + newAreaSize / 4);
MIHP_HeapMemoryAreaHeader* newArea = MIHP_CreateHeapMemoryArea(heap, newAreaSize);
if (newArea == NULL)

5
minimal_heap_test.c
View File

@@ -26,7 +26,7 @@ void OnHeapCorruptionDetectedCallback(const MIHP_Heap* heap, MIHP_HeapCorruption
__debugbreak();
}
#define NUM_ALLOCATIONS (4096 * 4)
#define NUM_ALLOCATIONS (4096 * 4096)
void* myptrs[NUM_ALLOCATIONS] = { 0 };
@@ -37,8 +37,9 @@ int main()
config.PlatformRequestMemoryFn = RequestMemory;
config.PlatformFreeMemoryFn = FreeMemory;
config.OnHeapCorruptionDetectedFn = OnHeapCorruptionDetectedCallback;
config.MaxMemoryAreaSize *= 16;
config.HeapValidationMode = MIHP_HVM_Checksum;
config.HeapValidationMode = MIHP_HVM_MagicNumber;
MIHP_Heap myHeap = { 0 };
MIHP_InitializeHeap(&myHeap, config);