how much memory a C/C++ program is using

Question

We need to write a C/C++ code that will check whether the memory allocated to the program at the initial and the memory returned to the system is the same or not.

My idea is to find the memory usage at beginning and at ending and subtract.

But how to find the memory usage?

Any other idea please.

This will probably be highly dependent on which operating system you're using. Which operating system are you using? — , May 04 '12 at 05:31
possible duplicate: http://stackoverflow.com/questions/9748792/how-to-get-heap-size-of-a-program — jcomeau_ictx, May 04 '12 at 05:32
This might help too. http://stackoverflow.com/questions/131303/linux-how-to-measure-actual-memory-usage-of-an-application-or-process — ervinbosenbacher, May 05 '12 at 06:43

score 1 · Accepted Answer · edited May 23 '17 at 12:20

1

If you are using the Linux/Unix based OS , you can involve the top utility ans see the difference.no need to reinvent the wheel.

use this in your c code :

uint find_memory_usage()
{

  sprintf(cmd, "/bin/top");
  system(cmd);
}

You can use exec family functions or system call as well for this. This link on SO may also help. or this one.

edited May 23 '17 at 12:20

Community

1
1

answered May 06 '12 at 15:34

Raulp

6,261
11
73
129

score -1 · Answer 2 · answered May 04 '12 at 06:28

-1

I think this code will help you to find size of your c code:

#include<stdio.h>
#include<bios.h>
int main(void)
{
printf("memory size %d kbite\n", biosmemory());
return 0;
}

answered May 04 '12 at 06:28

Malarkodi

326
4
20

int main(void) { printf("memory size %d kbite\n", biosmemory()); int *a= new int[10000]; printf("memory size %d kbite\n", biosmemory()); } – kamal May 04 '12 at 07:23
1

What in the world is `bios.h`? I've never seen that header. – Cody Gray May 04 '12 at 07:45

how much memory a C/C++ program is using

2 Answers2