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Re: node name

A quick question. The following is a fragment from scheduler.cc
My question is why          

     p->uid_ = - p->uid_;

What does it mean?


void ListScheduler::run()
{ 
        /*XXX*/
        instance_ = this;
        while (queue_ != 0 && !halted_) {
          //printf("got here, ");
                Event* p = queue_;
                queue_ = p->next_;
                clock_ = p->time_;
                //printf("clock_ %f, before p->uid_:%d,", clock_, p->uid_);
                p->uid_ = - p->uid_;
                //printf("after p->uid_:%d,", p->uid_);
                p->handler_->handle(p);
                //printf("queue%d, halted%d\n",queue_, halted_);
        }
}


--Shaogang 
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