1991/0806/port/sysproc.c (diff list | history)

1991/0724/sys/src/9/port/sysproc.c:562,564 – 1991/0806/sys/src/9/port/sysproc.c:562,607 (short | long | prev | next)
1991/0705		{ return ibrk(arg[0], BSEG);
1991/0605		}
1991/0806		long sysrendezvous(ulong *arg) { Proc *p, *d, **l; int s, tag; ulong val; tag = arg[0]; l = &REND(u->p->pgrp, tag); lock(u->p->pgrp); for(p = *l; p; p = p->rendhash) { if(p->rendtag == tag) { *l = p->rendhash; val = p->rendval; p->rendval = arg[1]; if(p->state != Rendezvous) panic("rendezvous"); ready(p); unlock(u->p->pgrp); return val; } l = &p->rendhash; } /* Going to sleep here */ p = u->p; p->rendtag = tag; p->rendval = arg[1]; p->rendhash = *l; *l = p; unlock(p->pgrp); s = splhi(); u->p->state = Rendezvous; sched(); splx(s); return u->p->rendval; }