mirror of
https://gitlab.rtems.org/rtems/rtos/rtems.git
synced 2026-08-31 11:57:28 +08:00
Joel Sherrill
bd5984deb7
* libcsupport/src/free.c, libcsupport/src/malloc.c, libcsupport/src/malloc_initialize.c, libcsupport/src/malloc_p.h, libcsupport/src/malloc_sbrk_helpers.c, libcsupport/src/malloc_statistics_helpers.c, libcsupport/src/malloc_walk.c, libcsupport/src/mallocfreespace.c, libcsupport/src/mallocinfo.c, libcsupport/src/realloc.c, libcsupport/src/rtems_memalign.c, sapi/include/confdefs.h, score/inline/rtems/score/thread.inl: Add support for optionally having a unified work area. In other words, the RTEMS Workspace and C Program Heap are the same pool of memory.
92 lines
1.9 KiB
C
92 lines
1.9 KiB
C
/*
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* rtems_memalign() - Raw aligned allocate from Protected Heap
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*
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* COPYRIGHT (c) 1989-2008.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.com/license/LICENSE.
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*
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* $Id$
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*/
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifdef RTEMS_NEWLIB
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#include "malloc_p.h"
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#include <stdlib.h>
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#include <errno.h>
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int rtems_memalign(
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void **pointer,
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size_t alignment,
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size_t size
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)
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{
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void *return_this;
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/*
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* Parameter error checks
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*/
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if ( !pointer )
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return EINVAL;
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*pointer = NULL;
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/*
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* Do not attempt to allocate memory if not in correct system state.
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*/
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if ( _System_state_Is_up(_System_state_Get()) &&
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!malloc_is_system_state_OK() )
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return EINVAL;
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/*
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*
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* If some free's have been deferred, then do them now.
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*/
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malloc_deferred_frees_process();
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#if defined(RTEMS_MALLOC_BOUNDARY_HELPERS)
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/*
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* If the support for a boundary area at the end of the heap
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* block allocated is turned on, then adjust the size.
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*/
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if (rtems_malloc_boundary_helpers)
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size += (*rtems_malloc_boundary_helpers->overhead)();
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#endif
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/*
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* Perform the aligned allocation requested
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*/
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return_this = _Protected_heap_Allocate_aligned(
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RTEMS_Malloc_Heap,
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size,
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alignment
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);
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if ( !return_this )
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return ENOMEM;
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/*
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* If configured, update the more involved statistics
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*/
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if ( rtems_malloc_statistics_helpers )
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(*rtems_malloc_statistics_helpers->at_malloc)(pointer);
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#if defined(RTEMS_MALLOC_BOUNDARY_HELPERS)
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/*
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* If configured, set the boundary area
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*/
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if (rtems_malloc_boundary_helpers)
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(*rtems_malloc_boundary_helpers->at_malloc)(return_this, size);
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#endif
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*pointer = return_this;
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return 0;
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}
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#endif
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