RTEMS 6.1-rc1
mallocinitmulti.h
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1/* SPDX-License-Identifier: BSD-2-Clause */
2
12/*
13 * Copyright (C) 2012, 2020 embedded brains GmbH & Co. KG
14 *
15 * Redistribution and use in source and binary forms, with or without
16 * modification, are permitted provided that the following conditions
17 * are met:
18 * 1. Redistributions of source code must retain the above copyright
19 * notice, this list of conditions and the following disclaimer.
20 * 2. Redistributions in binary form must reproduce the above copyright
21 * notice, this list of conditions and the following disclaimer in the
22 * documentation and/or other materials provided with the distribution.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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35 */
36
37#ifndef _RTEMS_MALLOCINITMULTI_H
38#define _RTEMS_MALLOCINITMULTI_H
39
40#include <rtems/malloc.h>
42
43#ifdef __cplusplus
44extern "C" {
45#endif
46
57static inline Heap_Control *_Malloc_Initialize_for_multiple_areas(
58 Heap_Control *heap
59)
60{
61 const Memory_Information *mem;
63 uintptr_t page_size;
64 size_t i;
65
66 mem = _Memory_Get();
67 RTEMS_Malloc_Heap = heap;
68 init_or_extend = _Heap_Initialize;
69 page_size = CPU_HEAP_ALIGNMENT;
70
71 for (i = 0; i < _Memory_Get_count( mem ); ++i) {
72 Memory_Area *area;
73 uintptr_t space_available;
74
75 area = _Memory_Get_area( mem, i );
76 space_available = ( *init_or_extend )(
77 heap,
78 _Memory_Get_free_begin( area ),
79 _Memory_Get_free_size( area ),
80 page_size
81 );
82
83 if ( space_available > 0 ) {
84 _Memory_Consume( area, _Memory_Get_free_size( area ) );
85 init_or_extend = _Heap_Extend;
86 }
87 }
88
89 if ( init_or_extend == _Heap_Initialize ) {
90 _Internal_error( INTERNAL_ERROR_NO_MEMORY_FOR_HEAP );
91 }
92
93 return heap;
94}
95
96#ifdef __cplusplus
97}
98#endif
99
100#endif /* _RTEMS_MALLOCINITMULTI_H */
Heap_Control * RTEMS_Malloc_Heap
C program heap control.
Definition: mallocheap.c:45
uintptr_t _Heap_Extend(Heap_Control *heap, void *area_begin, uintptr_t area_size, uintptr_t unused)
Extends the memory available for the heap.
Definition: heapextend.c:139
uintptr_t(* Heap_Initialization_or_extend_handler)(Heap_Control *heap, void *area_begin, uintptr_t area_size, uintptr_t page_size_or_unused)
Heap initialization and extend handler type.
Definition: heap.h:373
uintptr_t _Heap_Initialize(Heap_Control *heap, void *area_begin, uintptr_t area_size, uintptr_t page_size)
Initializes the heap control block.
Definition: heap.c:225
RTEMS_NO_RETURN void _Internal_error(Internal_errors_Core_list core_error)
Terminates the system with an INTERNAL_ERROR_CORE fatal source and the specified core error code.
Definition: interr.c:61
const Memory_Information * _Memory_Get(void)
Return the memory information of this platform.
Definition: bspgetworkarea.c:227
This header file provides interfaces of the Barrier Handler which are only used by the implementation...
This header file defines interfaces to support and use dynamic memory allocation.
Control block used to manage a heap.
Definition: heap.h:339
The memory area description.
Definition: memory.h:63
The memory information.
Definition: memory.h:83