how to find size /memory space occupied by a "process"

Question

I was asked to write a c/cpp program to find size of any process in an interview. can any one tell me how this could be achieve ?

p.s.- before marking the que as duplicate - plz read it carefully : I have asked how to find via c/cpp program not just with any unix/linux shell command

There is already a similar question [here.][1] [1]: http://stackoverflow.com/questions/1558402/memory-usage-of-current-process-in-c — samairtimer, May 08 '14 at 06:09

score 2 · Accepted Answer · edited May 23 '17 at 12:01

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You can make use of getrusage. But keep in mind that it is not implemented on all systems.

Or by reading the /proc/[pid]/statm

Otherwise, try one of these (command line options).

edited May 23 '17 at 12:01

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answered May 08 '14 at 06:08

brokenfoot

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6502 · Answer 2 · 2014-05-08T06:10:31.657

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It's not part of standard C++ and thus depends on the operating system.

On linux for example that is done by accessing /proc filesystem.

Another option is of course to just call a system command like ps and parse its output (that is is what I'd do in a Python script).

Being able to interpret the numbers you can get is however another non trivial problem.

edited May 08 '14 at 06:10

answered May 08 '14 at 06:03

6502

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score 0 · Answer 3 · answered May 08 '14 at 06:12

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Use

size <executable>

Output

   text    data     bss     dec     hex filename
1361623    1984    2708 1366315  14d92b <executable>

It shows text, data, bss and total size

answered May 08 '14 at 06:12

user207064

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how to find size /memory space occupied by a "process"

3 Answers3