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/****************************************************************************
* apps/system/free/free.c
*
* Copyright (C) 2011 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 <nuttx/progmem.h>
#include <stdio.h>
#include <stdlib.h>
/****************************************************************************
* Private Functions
****************************************************************************/
/* TODO Max block size only works on uniform prog mem */
static void free_getprogmeminfo(struct mallinfo * mem)
{
size_t page = 0, stpage = 0xFFFF;
size_t pagesize = 0;
ssize_t status;
mem->arena = 0;
mem->fordblks = 0;
mem->uordblks = 0;
mem->mxordblk = 0;
for (status=0, page=0; status >= 0; page++)
{
status = up_progmem_ispageerased(page);
pagesize = up_progmem_pagesize(page);
mem->arena += pagesize;
/* Is this beginning of new free space section */
if (status == 0)
{
if (stpage == 0xFFFF) stpage = page;
mem->fordblks += pagesize;
}
else if (status != 0)
{
mem->uordblks += pagesize;
if (stpage != 0xFFFF && up_progmem_isuniform())
{
stpage = page - stpage;
if (stpage > mem->mxordblk)
{
mem->mxordblk = stpage;
}
stpage = 0xFFFF;
}
}
}
mem->mxordblk *= pagesize;
}
/****************************************************************************
* Public Functions
****************************************************************************/
#ifdef CONFIG_BUILD_KERNEL
int main(int argc, FAR char **argv)
#else
int free_main(int argc, char **argv)
#endif
{
struct mallinfo data;
struct mallinfo prog;
#ifdef CONFIG_CAN_PASS_STRUCTS
data = mallinfo();
#else
(void)mallinfo(&data);
#endif
free_getprogmeminfo(&prog);
printf(" total used free largest\n");
printf("Data: %11d%11d%11d%11d\n",
data.arena, data.uordblks, data.fordblks, data.mxordblk);
printf("Prog: %11d%11d%11d%11d\n",
prog.arena, prog.uordblks, prog.fordblks, prog.mxordblk);
return OK;
}
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