Linux优先级时间片调度C++源码

【实例截图】

【核心代码】

int time()
{
    float time_temp=0;
	
    struct task_struct  copy_PCB[MAX][MAX];//备份
    for(int v=1; v<=temp; v  )
    {
		for(int u=1;u<=P[v];u  )
		{
			copy_PCB[v][u]=PCB[v][u];//对进程的初始化信息备份	
		}
    }
	time_temp=PCB[1][1].come_time;
	for(int i=1;i<=temp;i  )
	{
		while (PCB[i][P[i]].run_flag==0)
		{
		for(int j=1;j<=P[i];j  )
		{
			if(PCB[i][j].come_time>time_temp)
            {
                time_temp=PCB[i][j].come_time;
            }
            if(PCB[i][j].run_flag==0)//该进程还未结束
            {
                if(PCB[i][j].start_flag==0)  //该条件成立则说明，该进程是第一次执行，记录开始执行时间
                {
                    PCB[i][j].run_begin_time=time_temp;
                    PCB[i][j].start_flag=1;
                }
                if(PCB[i][j].run_time/time_counter>1)//至少有两倍的时间片未执行
                {
                    PCB[i][j].run_time=PCB[i][j].run_time-time_counter;
                    time_temp=time_temp time_counter;
                }
                else if(PCB[i][j].run_time-time_counter==0)
                {
                    time_temp=time_temp time_counter;
                    PCB[i][j].run_end_time=time_temp;
                    PCB[i][j].run_flag=1;
                    PCB[i][j].run_time=copy_PCB[i][j].run_time;
                }
                else//仅剩下不足一倍的时间片
                {
                    time_temp=time_temp PCB[i][j].run_time;
                    PCB[i][j].run_end_time=time_temp;
                    PCB[i][j].run_flag=1;
                    PCB[i][j].run_time=copy_PCB[i][j].run_time;
                }
            }
		}
	}
	}
	return 0;
}