Function resetpriority

freebsd/kern/sched_4bsd.c:603–616

* Compute the priority of a process when running in user mode. * Arrange to reschedule if the resulting priority is better * than that of the current process. */

 * than that of the current process.
 */
static void
resetpriority(struct thread *td)
{
	u_int newpriority;

	if (td->td_pri_class != PRI_TIMESHARE)
		return;
	newpriority = PUSER +
	    td_get_sched(td)->ts_estcpu / INVERSE_ESTCPU_WEIGHT +
	    NICE_WEIGHT * (td->td_proc->p_nice - PRIO_MIN);
	newpriority = min(max(newpriority, PRI_MIN_TIMESHARE),
	    PRI_MAX_TIMESHARE);
	sched_user_prio(td, newpriority);
}

/*
 * Update the thread's priority when the associated process's user