PRSTOP_CALLED
if (lwp->lwp_pcb.pcb_flags & PRSTOP_CALLED)
lwp->lwp_pcb.pcb_flags |= PRSTOP_CALLED;
ttolwp(curthread)->lwp_pcb.pcb_flags &= ~PRSTOP_CALLED;
if (lwp->lwp_pcb.pcb_flags & PRSTOP_CALLED)
lwp->lwp_pcb.pcb_flags |= PRSTOP_CALLED;
ttolwp(curthread)->lwp_pcb.pcb_flags &= ~PRSTOP_CALLED;