98 lines
3.0 KiB
C
98 lines
3.0 KiB
C
/****************************************************************************
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* mm/mm_heap/mm_foreach.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <assert.h>
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#include <debug.h>
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#include <nuttx/mm/mm.h>
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#include "mm_heap/mm.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: mm_foreach
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*
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* Description:
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* Visit each node to run handler in heap.
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*
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****************************************************************************/
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void mm_foreach(FAR struct mm_heap_s *heap, mmchunk_handler_t handler,
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FAR void *arg)
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{
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FAR struct mm_allocnode_s *node;
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FAR struct mm_allocnode_s *prev;
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#if CONFIG_MM_REGIONS > 1
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int region;
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#else
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# define region 0
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#endif
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DEBUGASSERT(handler);
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/* Visit each region */
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#if CONFIG_MM_REGIONS > 1
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for (region = 0; region < heap->mm_nregions; region++)
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#endif
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{
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prev = NULL;
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/* Visit each node in the region
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* Retake the semaphore for each region to reduce latencies
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*/
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DEBUGVERIFY(mm_takesemaphore(heap));
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for (node = heap->mm_heapstart[region];
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node < heap->mm_heapend[region];
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node = (FAR struct mm_allocnode_s *)
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((FAR char *)node + node->size))
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{
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minfo("region=%d node=%p size=%u preceding=%u (%c)\n",
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region, node, (unsigned int)node->size,
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(unsigned int)(node->preceding & ~MM_ALLOC_BIT),
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(node->preceding & MM_ALLOC_BIT) ? 'A' : 'F');
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handler(node, arg);
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DEBUGASSERT(prev == NULL ||
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prev->size == (node->preceding & ~MM_ALLOC_BIT));
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prev = node;
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}
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minfo("region=%d node=%p heapend=%p\n",
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region, node, heap->mm_heapend[region]);
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DEBUGASSERT(node == heap->mm_heapend[region]);
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mm_givesemaphore(heap);
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}
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#undef region
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}
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