71 lines
2.6 KiB
C
71 lines
2.6 KiB
C
/****************************************************************************
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* mm/umm_heap/umm_heap.h
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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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#ifndef __MM_UMM_HEAP_UMM_HEAP_H
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#define __MM_UMM_HEAP_UMM_HEAP_H
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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 <nuttx/addrenv.h>
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#include <nuttx/userspace.h>
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#include <nuttx/mm/mm.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#if defined(CONFIG_ARCH_ADDRENV) && defined(__KERNEL__)
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/* In the kernel build, there are multiple user heaps; one for each task
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* group. In this build configuration, the user heap structure lies
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* in a reserved region at the beginning of the .bss/.data address
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* space (CONFIG_ARCH_DATA_VBASE). The size of that region is given by
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* ARCH_DATA_RESERVE_SIZE
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*/
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# define USR_HEAP (ARCH_DATA_RESERVE->ar_usrheap)
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#elif defined(CONFIG_BUILD_PROTECTED) && defined(__KERNEL__)
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/* In the protected mode, there are two heaps: A kernel heap and a single
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* user heap. Kernel code must obtain the address of the user heap data
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* structure from the userspace interface.
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*/
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# define USR_HEAP (*USERSPACE->us_heap)
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#else
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/* Otherwise, the user heap data structures are in common .bss */
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# define USR_HEAP g_mmheap
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#ifdef CONFIG_BUILD_KERNEL
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void umm_try_initialize(void);
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#endif
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#endif /* __MM_UMM_HEAP_UMM_HEAP_H */
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