forked from Imagelibrary/rtems
101 lines
3.0 KiB
C
101 lines
3.0 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/**
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* @file
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*
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* @ingroup MallocSupport
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*
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* @brief This header file provides the implementation of
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* _Malloc_Initialize_for_multiple_areas().
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*/
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/*
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* Copyright (C) 2012, 2020 embedded brains GmbH & Co. KG
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _RTEMS_MALLOCINITMULTI_H
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#define _RTEMS_MALLOCINITMULTI_H
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#include <rtems/malloc.h>
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#include <rtems/score/heapimpl.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @ingroup MallocSupport
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*
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* @brief Initializes the separate C Program Heap with support for more than
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* one memory area.
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*
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* This implementation should be used by BSPs which provide more than one
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* memory area via _Memory_Get() to implement
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* _Workspace_Malloc_initialize_separate().
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*/
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static inline Heap_Control *_Malloc_Initialize_for_multiple_areas(
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Heap_Control *heap
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)
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{
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const Memory_Information *mem;
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Heap_Initialization_or_extend_handler init_or_extend;
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uintptr_t page_size;
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size_t i;
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mem = _Memory_Get();
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RTEMS_Malloc_Heap = heap;
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init_or_extend = _Heap_Initialize;
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page_size = CPU_HEAP_ALIGNMENT;
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for (i = 0; i < _Memory_Get_count( mem ); ++i) {
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Memory_Area *area;
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uintptr_t space_available;
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area = _Memory_Get_area( mem, i );
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space_available = ( *init_or_extend )(
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heap,
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_Memory_Get_free_begin( area ),
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_Memory_Get_free_size( area ),
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page_size
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);
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if ( space_available > 0 ) {
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_Memory_Consume( area, _Memory_Get_free_size( area ) );
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init_or_extend = _Heap_Extend;
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}
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}
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if ( init_or_extend == _Heap_Initialize ) {
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_Internal_error( INTERNAL_ERROR_NO_MEMORY_FOR_HEAP );
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}
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return heap;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* _RTEMS_MALLOCINITMULTI_H */
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