topic Re: Which command can be used to check a executable file's static memory size? in Operating System - Linux

Which command can be used to check a executable file's static memory size?

MA Qiang — Mon, 05 Jun 2006 08:03:38 GMT

Thanks.

Re: Which command can be used to check a executable file's static memory size?

Bill Hassell — Mon, 05 Jun 2006 08:15:47 GMT

Beleive it or not, the command is called size. As in:

size /usr/bin/fbackup

You can also get details with chatr:

chatr /usr/bin/frecover

Re: Which command can be used to check a executable file's static memory size?

MA Qiang — Mon, 05 Jun 2006 20:36:11 GMT

What is the unit of section sizes?

Re: Which command can be used to check a executable file's static memory size?

Dennis Handly — Mon, 05 Jun 2006 22:08:27 GMT

>What is the unit of section sizes?

If you read size(1), you'll see it's in decimal bytes, unless you use -x for hex.

Re: Which command can be used to check a executable file's static memory size?

MA Qiang — Sun, 11 Jun 2006 08:39:00 GMT

I have a c program:
> cat testmem.c
#include

void main()
{
float b[67106210];
b[1]=20.0;
printf("%f\n", b[1]);
}

The array size is about 67106210*4=268,424,840Bytest.

After compiled (cc testmem.c -o testmem.out'), I got testmem.out.

> size testmem.out
text data bss dec hex filename
7662 128 84 7874 1ec2 testmem.out

> size -x testmem.out
text data bss dec hex filename
0x1dee 0x80 0x54 7874 1ec2 testmem.out

How to find 268,424,840 in the output of size?

Re: Which command can be used to check a executable file's static memory size?

Dennis Handly — Mon, 12 Jun 2006 17:49:49 GMT

>How to find 268,424,840 in the output of size?

You can't. That isn't a "static" size since auto variables are allocated on the stack. If you move it to file scope, you'll see it.

>void main()

This is illegal, it must be "int main()".

Re: Which command can be used to check a executable file's static memory size?

MA Qiang — Mon, 12 Jun 2006 19:37:51 GMT

I modified the source:
#include

float b[67108863];

int main()
{
b[1]=20.0;
printf("%f\n", b[1]);
return 1;
}

then I got the output of size:
> size testmem.out
text data bss dec hex filename
7650 128 268435556 268443334 10001ec6 testmem.out

Thanks.

Re: Which command can be used to check a executable file's static memory size?

Dennis Handly — Mon, 12 Jun 2006 20:56:07 GMT

>return 1;

To return success, you return 0.

If you really want to know the frame sizes, you could look at:
/usr/ccs/bin/odump -unwind a.out
(You take the hex size and multiply by 8.)

For ELF files:
/usr/ccs/bin/elfdump -U a.out
(For PA64, hex size * 8. For IPF, it doesn't appear to be listed and you would have to disassemble the code.)