2003/0314/port/proc.c (diff list | history)

2003/0301/sys/src/9/port/proc.c:259,264 – 2003/0314/sys/src/9/port/proc.c:259,279 (short | long | prev | next)
Add yield. rsc Mon Mar 20 20:49:43 2006
1990/0227		splx(s); }
2003/0314		/* * yield the processor to any other runnable process */ void yield(void) { if(anyready()){ up->yield = 1; sched(); } } /* * pick a process to run */
1990/0227		Proc* runproc(void) {
2003/0301/sys/src/9/port/proc.c:282,294 – 2003/0314/sys/src/9/port/proc.c:297,311
2003/0228		for(i = 0;; i++){ /*
2003/0301		* find the highest priority target process that this
2003/0228		* processor can run given affinity constraints
2003/0314		* processor can run given affinity constraints. *
2003/0228		*/ for(rq = &runq[Nrq-1]; rq >= runq; rq--){
2003/0301		tp = rq->head; if(tp == 0)
2003/0228		continue;
2003/0301		for(; tp; tp = tp->rnext){
2003/0314		for(tp = rq->head; tp; tp = tp->rnext){ if(tp->yield){ tp->yield = 0; continue; }
2003/0301		if(tp->mp == nil || tp->mp == MACHP(m->machno) || (!tp->wired && i > 0))
2003/0228		goto found;