#include <stdio.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <iostream>
#include "../user.h"

#define   RUSAGE_SELF     0
#define   RUSAGE_CHILDREN     -1

/*
 gcc -shared -o yc_name.so yc_name.cpp
*/

using namespace std;

typedef vector<string> str_vector;

extern "C"
{
  export int extern_function(void *v_arg);

  int extern_function(void *v_arg)
  {
    user *p_user = (user*) v_arg;
    rusage* p_rusage = new rusage;
    getrusage( RUSAGE_SELF, p_rusage );
    char c_msg[1024];

    /* see man getrusage  */

    sprintf(c_msg, "getrusage:<br>\nmaxrss: %D (max resident set size)<br>\nixrss: %D (integral shared text memory size)<br>\nidrss: %D (integral unshared data size)<br>\nisrss %D (integral unshared stack size)<br>\nminflt: %D (page reclaims)<br>\nmajflt: %D (page faults)<br>\nnswap: %D (swaps)<br>\ninblock: %D (block input operations)<br>\noublock: %D (block output operations)<br>\nmsgsnd: %D (messages sent)<br>\nmsgrcv: %D (messages received)<br>\nnsignals: %D (signals received)<br>\nnvcsw: %D (voluntary context switches)<br>\nnivcsw: %D (involuntary context switches)<br>\n",
            p_rusage->ru_maxrss,
            p_rusage->ru_ixrss,
            p_rusage->ru_idrss,
            p_rusage->ru_isrss,
            p_rusage->ru_minflt,
            p_rusage->ru_majflt,
            p_rusage->ru_nswap,
            p_rusage->ru_inblock,
            p_rusage->ru_oublock,
            p_rusage->ru_msgsnd,
            p_rusage->ru_msgrcv,
            p_rusage->ru_nsignals,
            p_rusage->ru_nvcsw,
            p_rusage->ru_nivcsw
           );

    p_user->msg_post( new string( c_msg ) );
  }
}