malloc.h

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/*
 *  COPYRIGHT (c) 1989-2011.
 *  On-Line Applications Research Corporation (OAR).
 *
 *  The license and distribution terms for this file may in
 *  the file LICENSE in this distribution or at
 *  http://www.rtems.org/license/LICENSE.
 */

#ifndef _RTEMS_MALLOC_H
#define _RTEMS_MALLOC_H

#include <rtems.h>
#include <rtems/bspIo.h>
#include <rtems/libcsupport.h> /* for malloc_walk() */
#include <rtems/score/memory.h>

#include <stdint.h>

#ifdef __cplusplus
extern "C" {
#endif

extern Heap_Control *RTEMS_Malloc_Heap;

void RTEMS_Malloc_Initialize(
  const Memory_Information              *mem,
  Heap_Initialization_or_extend_handler  extend
);

extern ptrdiff_t RTEMS_Malloc_Sbrk_amount;

static inline void rtems_heap_set_sbrk_amount( ptrdiff_t sbrk_amount )
{
  RTEMS_Malloc_Sbrk_amount = sbrk_amount;
}

typedef void *(*rtems_heap_extend_handler)(
  Heap_Control *heap,
  size_t alloc_size
);

void *rtems_heap_extend_via_sbrk(
  Heap_Control *heap,
  size_t alloc_size
);

void *rtems_heap_null_extend(
  Heap_Control *heap,
  size_t alloc_size
);

extern const rtems_heap_extend_handler rtems_malloc_extend_handler;

/*
 * Malloc Plugin to Dirty Memory at Allocation Time
 */
typedef void (*rtems_malloc_dirtier_t)(void *, size_t);
extern rtems_malloc_dirtier_t rtems_malloc_dirty_helper;

void rtems_malloc_dirty_memory(
  void   *start,
  size_t  size
);

int rtems_memalign(
  void   **pointer,
  size_t   alignment,
  size_t   size
);

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;

void *rtems_malloc(size_t size)
  RTEMS_MALLOCLIKE RTEMS_ALLOC_SIZE(1) RTEMS_WARN_UNUSED_RESULT;

void *rtems_calloc(size_t nelem, size_t elsize)
  RTEMS_MALLOCLIKE RTEMS_ALLOC_SIZE_2(1, 2) RTEMS_WARN_UNUSED_RESULT;

rtems_status_code rtems_heap_extend(
  void *area_begin,
  uintptr_t area_size
);

void *rtems_heap_greedy_allocate(
  const uintptr_t *block_sizes,
  size_t block_count
);

void *rtems_heap_greedy_allocate_all_except_largest(
  uintptr_t *allocatable_size
);

void rtems_heap_greedy_free( void *opaque );

#ifdef __cplusplus
}
#endif

#endif