c5ba9261bc
usage:echo <used/free> > /proc/memdump echo used > /proc/memdump // output all used memory node info(address + size) echo free > /proc/memdump // output all free memory node info(address + size) Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
122 lines
3.7 KiB
C
122 lines
3.7 KiB
C
/****************************************************************************
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* mm/mm_heap/mm_memdump.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdio.h>
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#include <malloc.h>
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#include <assert.h>
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#include <debug.h>
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#include <nuttx/mm/mm.h>
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#include "mm_heap/mm.h"
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struct memdump_info_s
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{
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pid_t pid;
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int blks;
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int size;
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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static void memdump_handler(FAR struct mm_allocnode_s *node, FAR void *arg)
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{
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FAR struct memdump_info_s *info = arg;
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if ((node->preceding & MM_ALLOC_BIT) != 0)
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{
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DEBUGASSERT(node->size >= SIZEOF_MM_ALLOCNODE);
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if (info->pid == -1)
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{
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info->blks++;
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info->size += node->size;
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syslog(LOG_INFO, "%12p%12" PRIu32 "\n",
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((FAR char *)node + SIZEOF_MM_ALLOCNODE),
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node->size);
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}
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}
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else
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{
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FAR struct mm_freenode_s *fnode = (FAR void *)node;
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DEBUGASSERT(node->size >= SIZEOF_MM_FREENODE);
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DEBUGASSERT(fnode->blink->flink == fnode);
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DEBUGASSERT(fnode->blink->size <= fnode->size);
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DEBUGASSERT(fnode->flink == NULL ||
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fnode->flink->blink == fnode);
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DEBUGASSERT(fnode->flink == NULL ||
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fnode->flink->size == 0 ||
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fnode->flink->size >= fnode->size);
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if (info->pid == -2)
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{
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info->blks++;
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info->size += node->size;
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syslog(LOG_INFO, "%12p%12" PRIu32 "\n",
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((FAR char *)node + SIZEOF_MM_ALLOCNODE),
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node->size);
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}
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}
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: mm_memdump
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*
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* Description:
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* mm_memdump returns a memory info about specified pid of task/thread.
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*
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****************************************************************************/
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void mm_memdump(FAR struct mm_heap_s *heap, pid_t pid)
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{
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struct memdump_info_s info;
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if (pid == -1)
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{
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syslog(LOG_INFO, "Dump all used memory node info:\n");
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}
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else if (pid == -2)
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{
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syslog(LOG_INFO, "Dump all free memory node info:\n");
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}
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syslog(LOG_INFO, "%12s%12s\n", "Address", "Size");
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info.blks = 0;
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info.size = 0;
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info.pid = pid;
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mm_foreach(heap, memdump_handler, &info);
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syslog(LOG_INFO, "%12s%12s\n", "Total Blks", "Total Size");
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syslog(LOG_INFO, "%12d%12d\n", info.blks, info.size);
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}
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