RTEMS  5.0.0
malloc.h
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1 
7 /*
8  * COPYRIGHT (c) 1989-2011.
9  * On-Line Applications Research Corporation (OAR).
10  *
11  * The license and distribution terms for this file may in
12  * the file LICENSE in this distribution or at
13  * http://www.rtems.org/license/LICENSE.
14  */
15 
16 #ifndef _RTEMS_MALLOC_H
17 #define _RTEMS_MALLOC_H
18 
19 #include <rtems.h>
20 #include <rtems/bspIo.h>
21 #include <rtems/libcsupport.h> /* for malloc_walk() */
22 
23 #include <stdint.h>
24 
25 #ifdef __cplusplus
26 extern "C" {
27 #endif
28 
44 
45 void RTEMS_Malloc_Initialize(
46  const Heap_Area *areas,
47  size_t area_count,
49 );
50 
51 extern ptrdiff_t RTEMS_Malloc_Sbrk_amount;
52 
53 static inline void rtems_heap_set_sbrk_amount( ptrdiff_t sbrk_amount )
54 {
55  RTEMS_Malloc_Sbrk_amount = sbrk_amount;
56 }
57 
58 typedef void *(*rtems_heap_extend_handler)(
59  Heap_Control *heap,
60  size_t alloc_size
61 );
62 
67  Heap_Control *heap,
68  size_t alloc_size
69 );
70 
71 void *rtems_heap_null_extend(
72  Heap_Control *heap,
73  size_t alloc_size
74 );
75 
76 extern const rtems_heap_extend_handler rtems_malloc_extend_handler;
77 
78 /*
79  * Malloc Plugin to Dirty Memory at Allocation Time
80  */
81 typedef void (*rtems_malloc_dirtier_t)(void *, size_t);
82 extern rtems_malloc_dirtier_t rtems_malloc_dirty_helper;
83 
92  void *start,
93  size_t size
94 );
95 
111 int rtems_memalign(
112  void **pointer,
113  size_t alignment,
114  size_t size
115 );
116 
138  size_t size,
139  uintptr_t alignment,
140  uintptr_t boundary
143 
155 void *rtems_malloc(size_t size)
156  RTEMS_MALLOCLIKE RTEMS_ALLOC_SIZE(1) RTEMS_WARN_UNUSED_RESULT;
157 
174 void *rtems_calloc(size_t nelem, size_t elsize)
175  RTEMS_MALLOCLIKE RTEMS_ALLOC_SIZE_2(1, 2) RTEMS_WARN_UNUSED_RESULT;
176 
191  void *area_begin,
192  uintptr_t area_size
193 );
194 
205  const uintptr_t *block_sizes,
206  size_t block_count
207 );
208 
219  uintptr_t *allocatable_size
220 );
221 
229 void rtems_heap_greedy_free( void *opaque );
230 
231 #ifdef __cplusplus
232 }
233 #endif
234 
235 #endif
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:289
void * rtems_malloc(size_t size) RTEMS_MALLOCLIKE RTEMS_ALLOC_SIZE(1) RTEMS_WARN_UNUSED_RESULT
Allocates a memory area of the specified size from the heap.
#define RTEMS_ALLOC_SIZE_2(_count_index, _size_index)
Tells the compiler the memory allocation item count and item size parameter of this function similar ...
Definition: basedefs.h:268
Heap area structure for table based heap initialization and extension.
Definition: heap.h:275
void * rtems_heap_extend_via_sbrk(Heap_Control *heap, size_t alloc_size)
RTEMS Extend Heap via Sbrk.
Definition: rtems_heap_extend_via_sbrk.c:34
void * rtems_calloc(size_t nelem, size_t elsize) RTEMS_MALLOCLIKE RTEMS_ALLOC_SIZE_2(1
Allocates a memory area for the specified count of elements from the heap.
void rtems_heap_greedy_free(void *opaque)
Frees space of a greedy allocation.
Definition: rtems_heap_greedy.c:58
rtems_status_code
Classic API Status.
Definition: status.h:43
void rtems_malloc_dirty_memory(void *start, size_t size)
Dirty Memory Function.
Definition: malloc_dirtier.c:28
#define RTEMS_MALLOCLIKE
Tells the compiler that this function is a memory allocation function similar to malloc().
Definition: basedefs.h:247
Definition: bootldr.h:42
Control block used to manage a heap.
Definition: heap.h:255
Heap_Control * RTEMS_Malloc_Heap
C program heap control.
Standard C Library Support.
Interface to Kernel Print Methods.
void * rtems_heap_greedy_allocate(const uintptr_t *block_sizes, size_t block_count)
Greedy allocate that empties the heap.
Definition: rtems_heap_greedy.c:28
#define RTEMS_ALLOC_SIZE(_index)
Tells the compiler the memory allocation size parameter of this function similar to malloc()...
Definition: basedefs.h:257
rtems_status_code rtems_heap_extend(void *area_begin, uintptr_t area_size)
Extends the memory available for the heap using the memory area starting at area_begin of size area_s...
int rtems_memalign(void **pointer, size_t alignment, size_t size)
RTEMS Variation on Aligned Memory Allocation.
void * rtems_heap_allocate_aligned_with_boundary(size_t size, uintptr_t alignment, uintptr_t boundary) RTEMS_MALLOCLIKE RTEMS_ALLOC_SIZE(1) RTEMS_ALLOC_ALIGN(2) RTEMS_WARN_UNUSED_RESULT
Allocates a memory area of size size bytes from the heap.
unsigned size
Definition: tte.h:74
#define RTEMS_WARN_UNUSED_RESULT
Tells the compiler that the result of this function should be used.
Definition: basedefs.h:287
void * rtems_heap_greedy_allocate_all_except_largest(uintptr_t *allocatable_size)
Greedy allocate all blocks except the largest free block.
Definition: rtems_heap_greedy.c:42
#define RTEMS_ALLOC_ALIGN(_index)
Tells the compiler the memory allocation alignment parameter of this function similar to aligned_allo...
Definition: basedefs.h:278