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mm: Add a bunch of assertions

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This commit is contained in:
YAMAMOTO Takashi
2020-02-13 17:06:05 +09:00
committed by patacongo
parent c1a32fb9dd
commit 46ad645efc
6 changed files with 37 additions and 2 deletions
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mm/mm_heap/mm_mallinfo.c
+19 -2
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@@ -60,6 +60,7 @@
int mm_mallinfo(FAR struct mm_heap_s *heap, FAR struct mallinfo *info)
{
FAR struct mm_allocnode_s *node;
FAR struct mm_allocnode_s *prev;
size_t mxordblk = 0;
int ordblks = 0; /* Number of non-inuse chunks */
size_t uordblks = 0; /* Total allocated space */
@@ -84,9 +85,11 @@ int mm_mallinfo(FAR struct mm_heap_s *heap, FAR struct mallinfo *info)
mm_takesemaphore(heap);
for (node = heap->mm_heapstart[region];
for (prev = NULL, node = heap->mm_heapstart[region];
node < heap->mm_heapend[region];
node = (FAR struct mm_allocnode_s *)((FAR char *)node + node->size))
prev = node,
node = (FAR struct mm_allocnode_s *)
((FAR char *)node + node->size))
{
minfo("region=%d node=%p size=%u preceding=%u (%c)\n",
region, node, (unsigned int)node->size,
@@ -97,10 +100,21 @@ int mm_mallinfo(FAR struct mm_heap_s *heap, FAR struct mallinfo *info)
if ((node->preceding & MM_ALLOC_BIT) != 0)
{
DEBUGASSERT(node->size >= SIZEOF_MM_ALLOCNODE);
uordblks += node->size;
}
else
{
FAR struct mm_freenode_s *fnode;
DEBUGASSERT(node->size >= SIZEOF_MM_FREENODE);
fnode = (FAR void *)node;
DEBUGASSERT(fnode->blink->flink == fnode);
DEBUGASSERT(fnode->blink->size <= fnode->size);
DEBUGASSERT(fnode->flink == NULL ||
fnode->flink->blink == fnode);
DEBUGASSERT(fnode->flink == NULL ||
fnode->flink->size == 0 ||
fnode->flink->size >= fnode->size);
ordblks++;
fordblks += node->size;
if (node->size > mxordblk)
@@ -108,6 +122,9 @@ int mm_mallinfo(FAR struct mm_heap_s *heap, FAR struct mallinfo *info)
mxordblk = node->size;
}
}
DEBUGASSERT(prev == NULL ||
prev->size == (node->preceding & ~MM_ALLOC_BIT));
}
minfo("region=%d node=%p heapend=%p\n",