61 lines
2.1 KiB
C
61 lines
2.1 KiB
C
/****************************************************************************
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* mm/mm_heap/mm_brkaddr.c
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*
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* SPDX-License-Identifier: Apache-2.0
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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 <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_brkaddr
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*
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* Description:
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* Return the break address of a heap region. Zero is returned if the
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* memory region is not initialized.
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*
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****************************************************************************/
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FAR void *mm_brkaddr(FAR struct mm_heap_s *heap, int region)
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{
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uintptr_t brkaddr;
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#if CONFIG_MM_REGIONS > 1
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DEBUGASSERT(heap && region < heap->mm_nregions);
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#else
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DEBUGASSERT(heap && region == 0);
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#endif
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brkaddr = (uintptr_t)heap->mm_heapend[region];
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return brkaddr ? (FAR void *)(brkaddr + MM_SIZEOF_ALLOCNODE) : NULL;
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}
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