void _st_vp_schedule(void)
{
st_thread_t *thread;
while (_ST_RUNQ.next != &_ST_RUNQ) {
/* Pull thread off of the run queue */
thread = _ST_THREAD_PTR(_ST_RUNQ.next);
_ST_DEL_RUNQ(thread);
ST_ASSERT(thread->state == _ST_ST_RUNNABLE);
/* Resume the thread */
thread->state = _ST_ST_RUNNING;
_ST_RESTORE_CONTEXT(thread);
}
{
/* If there are no threads to run, switch to the idle thread */
thread = _st_this_vp.idle_thread;
ST_ASSERT(thread->state == _ST_ST_RUNNABLE);
thread->state = _ST_ST_RUNNING;
_ST_RESTORE_CONTEXT(thread);
/* Resume the thread */
}
}
/* ARGSUSED */
void *_st_idle_thread_start(void *arg)
{
_st_thread_t *me = _ST_CURRENT_THREAD();
while (_st_active_count > 0) {
/* Idle vp till I/O is ready or the smallest timeout expired */
_ST_VP_IDLE();
/* Check sleep queue for expired threads */
_st_vp_check_clock();
me->state = _ST_ST_RUNNABLE;
_ST_SWITCH_CONTEXT(me);
}
_ST_RESTORE_CONTEXT(_st_this_vp.primorial_thread);
/* No more threads */
free(_st_this_vp.primorial_thread);
/* Free resources in use by event system */
(*_st_eventsys->free)();
return NULL;
}
