Record Process State

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I need to implement a program in C to record all tasks done by process from starting to termination using Linux Environment(Cantos).

This program should give me the PID of the process and all the corresponding states of this process as it run for e.g running, sleeping, waiting, block and termination along with the total memory and CPU usage in each state.

Posted 5-May-15 15:18pm

zahoorsaleem

Updated 5-May-15 15:24pm

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Sergey Alexandrovich Kryukov 5-May-15 21:30pm

Define "task"...
What have you tried so far?
—SA

[no name] 5-May-15 21:32pm

Good story, what's your plan?

zahoorsaleem 5-May-15 21:40pm

I have use task_struct structure but unable to get solution

[no name] 5-May-15 22:01pm

You seem to be asking for code without making any effort yourself. This is the wrong place. Do your own work and get help when you face a real obstacle i.e. when you have a specific question.

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Ashish Tyagi 40 · Answer 1 · 2015-05-09T06:01:00

You can use top cammand to get process status:
suppose pid to be monitered is 16452

CSS

top -p 16452 -b | grep PID -A1
  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
16452 ashish    20   0  702608 189280  92164 S   0.0  2.3   2:55.74 chrome
--
  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
16452 ashish    20   0  702608 189280  92164 S   0.3  2.3   2:55.75 chrome
--

CPallini · Answer 2 · 2015-05-09T07:00:00

Solution 3

As suggested you may retrieve some average values (based on kernel indicators) but, at least in my opinion, you cannot track all the process state changes, this info is only available to the process scheduler.

Posted 9-May-15 7:00am

CPallini

Frankie-C · Answer 3 · 2015-05-09T08:08:00

Solution 4

After so many suggestions it seems more or less legal to suggest you to get the sources of *NIX command 'ps' that you can find here[^].
It seems to be exactly what you are looking for ;) ...

Posted 9-May-15 8:08am

Frankie-C