nuttx/mm/mm_heap/mm_checkcorruption.c
Xuxingliang b9e59ad0a7 mm: add macro to judge if node/prenode is free
Signed-off-by: Xuxingliang <xuxingliang@xiaomi.com>
2023-09-12 22:09:36 +08:00

80 lines
2.7 KiB
C

/****************************************************************************
* mm/mm_heap/mm_checkcorruption.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <assert.h>
#include <sched.h>
#include <nuttx/arch.h>
#include <nuttx/mm/mm.h>
#include <nuttx/irq.h>
#include "mm_heap/mm.h"
/****************************************************************************
* Private Functions
****************************************************************************/
static void checkcorruption_handler(FAR struct mm_allocnode_s *node,
FAR void *arg)
{
size_t nodesize = MM_SIZEOF_NODE(node);
if (MM_NODE_IS_ALLOC(node))
{
assert(nodesize >= MM_SIZEOF_ALLOCNODE);
}
else
{
FAR struct mm_freenode_s *fnode = (FAR void *)node;
assert(nodesize >= MM_MIN_CHUNK);
assert(fnode->blink->flink == fnode);
assert(MM_SIZEOF_NODE(fnode->blink) <= nodesize);
assert(fnode->flink == NULL ||
fnode->flink->blink == fnode);
assert(fnode->flink == NULL ||
MM_SIZEOF_NODE(fnode->flink) == 0 ||
MM_SIZEOF_NODE(fnode->flink) >= nodesize);
}
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: mm_checkcorruption
*
* Description:
* mm_checkcorruption is used to check whether memory heap is normal.
*
****************************************************************************/
void mm_checkcorruption(FAR struct mm_heap_s *heap)
{
mm_foreach(heap, checkcorruption_handler, NULL);
}