Last change
on this file since 5580b93 was
5580b93,
checked in by Sebastian Huber <sebastian.huber@…>, on 05/05/21 at 06:46:24
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libc: Reimplement posix_memlign()
Move all error checks into posix_memalign() so that the returned memory
pointer is set to NULL under all error conditions except
memptr == NULL.
Use parameter names of POSIX documentation.
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-
Property mode set to
100644
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File size:
906 bytes
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1 | /** |
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2 | * @file |
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3 | * |
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4 | * @ingroup libcsupport |
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5 | */ |
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6 | |
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7 | /* |
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8 | * COPYRIGHT (c) 1989-2008. |
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9 | * On-Line Applications Research Corporation (OAR). |
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10 | * |
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11 | * The license and distribution terms for this file may be |
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12 | * found in the file LICENSE in this distribution or at |
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13 | * http://www.rtems.org/license/LICENSE. |
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14 | */ |
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15 | |
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16 | #ifdef HAVE_CONFIG_H |
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17 | #include "config.h" |
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18 | #endif |
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19 | |
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20 | #ifdef RTEMS_NEWLIB |
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21 | #include "malloc_p.h" |
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22 | |
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23 | #include <stdlib.h> |
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24 | #include <errno.h> |
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25 | |
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26 | int posix_memalign( |
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27 | void **memptr, |
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28 | size_t alignment, |
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29 | size_t size |
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30 | ) |
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31 | { |
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32 | RTEMS_OBFUSCATE_VARIABLE( memptr ); |
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33 | |
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34 | if ( memptr == NULL ) { |
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35 | return EINVAL; |
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36 | } |
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37 | |
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38 | *memptr = NULL; |
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39 | |
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40 | if ( alignment < sizeof( void * ) ) { |
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41 | return EINVAL; |
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42 | } |
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43 | |
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44 | if ( ( ( alignment - 1 ) & alignment ) != 0 ) { |
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45 | return EINVAL; |
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46 | } |
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47 | |
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48 | *memptr = rtems_heap_allocate_aligned_with_boundary( size, alignment, 0 ); |
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49 | |
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50 | if ( *memptr == NULL ) { |
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51 | return ENOMEM; |
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52 | } |
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53 | |
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54 | return 0; |
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55 | } |
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56 | #endif |
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