PUBLIC void schedule()
{
PROCESS* p;
int greatest_priority=0;
int i;
while (!greatest_priority)
{
if (firstLen-firstHead>0)
{
p_proc_ready=firstQueue[firstHead];
//greatest_priority=p_proc_ready->ticks;
greatest_priority=p_proc_ready->priority;
break;
}
else if(secondLen-secondHead>0)
{
for (i=0; i<secondLen; i++)
{
p=secondQueue[i];
if (p->state!=kRUNNABLE || p->ticks==0) continue;
if (p->ticks > greatest_priority)
{
greatest_priority = p->ticks;
p_proc_ready = p;
}
/*{
if (p->priority>greatest_priority && p->ticks!=0)
{
greatest_priority=p->priority;
p_proc_ready=p;
}
}*/
}
}
else
{
for(i=0;i<lastLen;i++)
{
p=lastQueue[i];
if (p->ticks > greatest_priority)
{
greatest_priority = p->ticks;
p_proc_ready = p;
}
}
}
if (!greatest_priority) initializeAllPro();
}
p_proc_ready->state=kRUNNING;
}
PUBLIC void schedule()
{
PROCESS* p;
int greatest_priority=0;
int i;
while (!greatest_priority)
{
if (firstLen-firstHead>0)
{
p_proc_ready=firstQueue[firstHead]; //第一个队列按照先到先得
greatest_priority=p_proc_ready->ticks;
break;
}
else //第二个队列按照优先级
{
for (i=0; i<secondLen; i++) //第二个队列增设判断是否为runnable状态
{
p=secondQueue[i];
if (p->state!=kRUNNABLE || p->ticks==0) continue;
if (p->ticks > greatest_priority)
{
greatest_priority = p->ticks;
p_proc_ready = p;
}
/*{ 下面代码被卡死。。。我也不懂为什么。。
if (p->priority>greatest_priority && p->ticks!=0)
{
greatest_priority=p->priority;
p_proc_ready=p;
}
}*/
}
}
if (!greatest_priority) initializeAllPro();
}
p_proc_ready->state=kRUNNING;
}
