Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
19 years ago

Memory statistics

Hi all, is it somehow possible to obtain statistic information about the memory usage of a NIOS2 program at runtime? I tried to use the "struct mstats" from the GNU extensions but it seems th...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
19 years ago

I'm also searching for function which returns the amount of memory usage.

I only found function mallinfo from newlib, but it gives not the information I need.

But maybe enought for your application.

Regards

Usage: 

#include <malloc.h>
        struct mallinfo meminfo;
        meminfo=mallinfo();
       # define OUT(DATA) printf("meminfo.%s = %d\n",#DATA,meminfo.DATA);
        OUT(arena);    // This is the total size of memory allocated with sbrk by malloc, in bytes.
        OUT(ordblks);  // This is the number of chunks not in use.
        OUT(hblks);    // This is the total number of chunks allocated with mmap.
        OUT(hblkhd);   // This is the total size of memory allocated with mmap, in bytes. 
        OUT(uordblks); // This is the total size of memory occupied by chunks handed out by malloc.  
        OUT(fordblks); // This is the total size of memory occupied by free (not in use) chunks.
        OUT(keepcost); // This is the size of the top-most releasable chunk that normally borders the end of the heap