100 lines
3.3 KiB
C
100 lines
3.3 KiB
C
/****************************************************************************
|
|
* mm/mm_zalloc.c
|
|
*
|
|
* Copyright (C) 2007, 2009, 2014 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include <nuttx/mm.h>
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: mm_zalloc
|
|
*
|
|
* Description:
|
|
* mm_zalloc calls mm_malloc, then zeroes out the allocated chunk.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_MM_MULTIHEAP
|
|
FAR void *mm_zalloc(FAR struct mm_heap_s *heap, size_t size)
|
|
{
|
|
FAR void *alloc = mm_malloc(heap, size);
|
|
if (alloc)
|
|
{
|
|
memset(alloc, 0, size);
|
|
}
|
|
|
|
return alloc;
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: zalloc
|
|
*
|
|
* Description:
|
|
* zalloc calls malloc, then zeroes out the allocated chunk.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_MM_USER_HEAP
|
|
FAR void *zalloc(size_t size)
|
|
{
|
|
#ifdef CONFIG_MM_MULTIHEAP
|
|
return mm_zalloc(&g_mmheap, size);
|
|
#else
|
|
FAR void *alloc = malloc(size);
|
|
if (alloc)
|
|
{
|
|
memset(alloc, 0, size);
|
|
}
|
|
|
|
return alloc;
|
|
#endif
|
|
}
|
|
#endif
|