Getting VmSize of a running process

This is a discussion on Getting VmSize of a running process within the Linux Programming forums, part of the Platform Specific Boards category; Hi all, I'd be glad of any help with either or both of the following questions: 1. What would be ...

  1. #1
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    Getting VmSize of a running process

    Hi all,

    I'd be glad of any help with either or both of the following questions:

    1. What would be the preferred (or most efficient) way of getting an application's current VmSize programatically?

    2. Assuming (as I suspect) that the best way to get the above data is from /proc/<pid>/status, can anybody point me to the best way to parse this file?

    Essentially what I would need to do in that case is the C equivalent of the following:

    grep -i vmsize /proc/<pid>/status | awk '{print $2}'

    Thanks in anticipation,

    Ruairi

  2. #2
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    Mar 2003
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    Thanks very much for that. Here's exactly what worked in the end.

    Code:
            FILE *fp;
            int myint;
            int BUFFERSIZE=80;
            char *buf=malloc(85);
            if((fp = fopen("/proc/1/status","r"))){
                    while(fgets(buf, BUFFERSIZE, fp) != NULL){
                            if(strstr(buf, "VmSize") != NULL){
                                    if (sscanf(buf, "%*s %d", &myint) == 1){
                                            printf("VmSize is %d\n", myint);
                                    }
                            }
                    }
            }
    Now for some cleanup, and integration into the project

    Ruairķ

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