source: rtems/cpukit/libcsupport/src/rtems_memalign.c @ 1c6926c1

5
Last change on this file since 1c6926c1 was 9d1f3943, checked in by Sebastian Huber <sebastian.huber@…>, on 02/25/16 at 08:02:43

malloc: Add _Malloc_System_state()

Replace malloc_is_system_state_OK() with _Malloc_System_state() to allow
early allocations, e.g. in bsp_start(). Here the _Thread_Executing is
NULL, thus an _API_Mutex_Lock() would lead to a NULL pointer access.

Move malloc() support code to general case
rtems_heap_allocate_aligned_with_boundary(). Use
rtems_heap_allocate_aligned_with_boundary() to avoid duplicated code.
  • Property mode set to 100644
File size: 916 bytes
Line 
1/**
2 *  @file
3 *
4 *  @brief RTEMS Variation on Aligned Memory Allocation
5 *  @ingroup MallocSupport
6 */
7
8/*
9 *  COPYRIGHT (c) 1989-2008.
10 *  On-Line Applications Research Corporation (OAR).
11 *
12 *  The license and distribution terms for this file may be
13 *  found in the file LICENSE in this distribution or at
14 *  http://www.rtems.org/license/LICENSE.
15 */
16
17#if HAVE_CONFIG_H
18#include "config.h"
19#endif
20
21#ifdef RTEMS_NEWLIB
22#include "malloc_p.h"
23
24#include <stdlib.h>
25#include <errno.h>
26
27int rtems_memalign(
28  void   **pointer,
29  size_t   alignment,
30  size_t   size
31)
32{
33  void *return_this;
34
35  /*
36   *  Parameter error checks
37   */
38  if ( !pointer )
39    return EINVAL;
40
41  *pointer = NULL;
42
43  /*
44   *  Perform the aligned allocation requested
45   */
46  return_this = rtems_heap_allocate_aligned_with_boundary( size, alignment, 0 );
47  if ( !return_this )
48    return ENOMEM;
49
50  *pointer = return_this;
51  return 0;
52}
53#endif
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