Gets information about resource utilization.

    Format

      #incloude <sys/resource.h>
      int getrusage (int who, struct rusage *r_usage);

1  –  Arguments

 who

    The process you want to get the resource usage for.

 r_usage

    A pointer to an object of type struct rusage in which the function
    can store the resource usage information.

2  –  Description

    The getrusage function provides measures of the resources used by the
    current process or its terminated and waited-for child processes.

    If the value of the who argument is RUSAGE_SELF, information is
    returned about resources used by the current process. If the value of
    the who argument is RUSAGE_CHILDREN, information is returned about
    resources used by the terminated and waited-for children of the
    current process. If the child is never waited for, the resource
    information for the child process is discarded and not included in
    the resource information provided by getrusage.

    Currently, only getting elapsed user time (ru_utime) and maximum
    resident memory (ru_maxrss) is supported.

3  –  Return Values

    0                  Successful completion.
    -1                 Indicates an error. errno contains the error.