exacct_calculate_proc_usage
exacct_calculate_proc_usage(p, pu, mask, EW_FINAL, wstat);
extern void exacct_calculate_proc_usage(proc_t *, proc_usage_t *,
exacct_calculate_proc_usage(p, pu, ac_mask, EW_PARTIAL, 0);
exacct_calculate_proc_usage(p, pu, ac_mask, flag, 0);