113 lines
3.7 KiB
C
113 lines
3.7 KiB
C
/****************************************************************************
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* apps/system/free/free.c
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*
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* Copyright (C) 2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/progmem.h>
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#include <stdio.h>
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#include <stdlib.h>
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/* \todo Max block size only works on uniform prog mem */
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void free_getprogmeminfo(struct mallinfo * mem)
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{
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uint16_t page = 0, stpage = 0xFFFF;
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uint16_t pagesize = 0;
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int status;
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mem->arena = 0;
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mem->fordblks = 0;
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mem->uordblks = 0;
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mem->mxordblk = 0;
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for (status=0, page=0; status >= 0; page++) {
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status = up_progmem_ispageerased(page);
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pagesize = up_progmem_pagesize(page);
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mem->arena += pagesize;
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/* Is this beginning of new free space section */
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if (status == 0) {
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if (stpage == 0xFFFF) stpage = page;
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mem->fordblks += pagesize;
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}
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else if (status != 0) {
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mem->uordblks += pagesize;
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if (stpage != 0xFFFF && up_progmem_isuniform()) {
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stpage = page - stpage;
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if (stpage > mem->mxordblk)
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mem->mxordblk = stpage;
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stpage = 0xFFFF;
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}
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}
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}
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mem->mxordblk *= pagesize;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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int free_main(int argc, char **argv)
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{
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struct mallinfo data;
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struct mallinfo prog;
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#ifdef CONFIG_CAN_PASS_STRUCTS
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data = mallinfo();
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#else
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(void)mallinfo(&data);
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#endif
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free_getprogmeminfo(&prog);
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printf(" total used free largest\n");
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printf("Data: %11d%11d%11d%11d\n",
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data.arena, data.uordblks, data.fordblks, data.mxordblk);
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printf("Prog: %11d%11d%11d%11d\n",
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prog.arena, prog.uordblks, prog.fordblks, prog.mxordblk);
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return OK;
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}
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