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mm_heap: heapsize align with MM_MIN_CHUNK. 

Signed-off-by: wangbowen6 <wangbowen6@xiaomi.com>
This commit is contained in:
wangbowen6 2022-02-21 18:22:40 +08:00 committed by Xiang Xiao
parent a0bde21f0f
commit 69e69740b5
3 changed files with 14 additions and 7 deletions
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4
mm/mm_heap/mm.h
View File

@ -146,6 +146,10 @@
#define SIZEOF_MM_FREENODE sizeof(struct mm_freenode_s)
/* What is the size of the start/end node? */
#define SIZEOF_MM_STARTENDNODE MM_MIN_CHUNK
/****************************************************************************
* Public Types
****************************************************************************/

12
mm/mm_heap/mm_initialize.c
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@ -118,15 +118,15 @@ void mm_addregion(FAR struct mm_heap_s *heap, FAR void *heapstart,
heap->mm_heapstart[IDX] = (FAR struct mm_allocnode_s *)
heapbase;
MM_ADD_BACKTRACE(heap, heap->mm_heapstart[IDX]);
heap->mm_heapstart[IDX]->size = SIZEOF_MM_ALLOCNODE;
heap->mm_heapstart[IDX]->size = SIZEOF_MM_STARTENDNODE;
heap->mm_heapstart[IDX]->preceding = MM_ALLOC_BIT;
node = (FAR struct mm_freenode_s *)
(heapbase + SIZEOF_MM_ALLOCNODE);
node->size = heapsize - 2*SIZEOF_MM_ALLOCNODE;
node->preceding = SIZEOF_MM_ALLOCNODE;
(heapbase + SIZEOF_MM_STARTENDNODE);
node->size = heapsize - 2*SIZEOF_MM_STARTENDNODE;
node->preceding = SIZEOF_MM_STARTENDNODE;
heap->mm_heapend[IDX] = (FAR struct mm_allocnode_s *)
(heapend - SIZEOF_MM_ALLOCNODE);
heap->mm_heapend[IDX]->size = SIZEOF_MM_ALLOCNODE;
(heapend - SIZEOF_MM_STARTENDNODE);
heap->mm_heapend[IDX]->size = SIZEOF_MM_STARTENDNODE;
heap->mm_heapend[IDX]->preceding = node->size | MM_ALLOC_BIT;
MM_ADD_BACKTRACE(heap, heap->mm_heapend[IDX]);

5
mm/mm_heap/mm_mallinfo.c
View File

@ -121,7 +121,10 @@ int mm_mallinfo(FAR struct mm_heap_s *heap, FAR struct mallinfo *info)
mm_foreach(heap, mallinfo_handler, info);
info->arena = heap->mm_heapsize;
info->uordblks += region * SIZEOF_MM_ALLOCNODE; /* account for the tail node */
/* Account for the tail node */
info->uordblks += region * SIZEOF_MM_STARTENDNODE;
DEBUGASSERT(info->uordblks + info->fordblks == heap->mm_heapsize);