/* doesn't work, feel free to finish this */
#include "torsmo.h"
#include <kstat.h>

static kstat_ctl_t *kstat;
static int kstat_updated;

static void update_kstat() {
  if (kstat == NULL) {
    kstat = kstat_open();
    if (kstat == NULL) {
      ERR("can't open kstat: %s", strerror(errno));
    }
  }

  if (kstat_chain_update(kstat) == -1) {
    perror("kstat_chain_update");
    return;
  }
}

void prepare_update() {
  kstat_updated = 0;
}

double get_uptime() {
  kstat_t *ksp;

  update_kstat();

  ksp = kstat_lookup(kstat, "unix", -1, "system_misc");
  if (ksp != NULL) {
    if (kstat_read(kstat, ksp, NULL) >= 0) {
      kstat_named_t *knp;
      knp = (kstat_named_t *) kstat_data_lookup(ksp, "boot_time");
      if (knp != NULL) {
        return get_time() - (double) knp->value.ui32;
      }
    }
  }
}

void update_meminfo() {
  /* TODO */
}