sample code for pstat_getdynamic()

1 test_pstat_getdynamic.c

/* test_pstat_getdynamic.c */
#include <stdio.h>
#include <sys/pstat.h>

int main() {
    struct pst_dynamic buf;

    if(pstat_getdynamic(&buf, sizeof(buf), 1, 0) != 1) {
        perror("pstat_getdynamic()");
        return -1;
    }

    printf("++++++++++----------++++++++++----------++++++++++----------\n");

    printf("last run process ID = %d\n", buf.psd_last_pid);
    printf("run queue length = %d\n", buf.psd_rq);
    printf("jobs in disk wait = %d\n", buf.psd_dw);
    printf("jobs in page wait = %d\n", buf.psd_pw);
    printf("jobs sleeping in core = %d\n", buf.psd_sl);
    printf("swapped out runnable jobs = %d\n", buf.psd_sw);

    printf("total virtual memory = %d\n", buf.psd_vm);
    printf("active virtual memory = %d\n", buf.psd_avm);
    printf("virt mem text = %d\n", buf.psd_vmtxt);
    printf("active virt mem text = %d\n", buf.psd_avmtxt);
    printf("free memory pages = %d\n", buf.psd_free);

    printf("global cpu time/state =\n");
    int i, j;
    for(i = 0; i < buf.psd_proc_cnt; ++ i) {
        printf("%2d:", i);
        for(j = 0; j < PST_MAX_CPUSTATES; ++ j) {
            printf(" %d/", buf.psd_mp_cpu_time[i][j]);
        }
        printf("\n");
    }

    printf("global run queue lengths 1/5/15 min. = %lf/ %lf/ %lf/\n",
        buf.psd_avg_1_min, buf.psd_avg_5_min, buf.psd_avg_15_min);

    printf("# of active proc  table entries = %d\n", buf.psd_activeprocs);
    printf("# of active inode table entries = %d\n", buf.psd_activeinodes);
    printf("# of active file  table entries = %d\n", buf.psd_activefiles);

    printf("Number of process structures currently allocated = %d\n", buf.psd_numprocsallocd);
    printf("Number of thread structures currently allocated = %d\n", buf.psd_numkthreadsallocd);
    printf("# of active threads on system = %d\n", buf.psd_activethreads);

    return 0;
}