#include "stdio.h"
float TIME; /*总需要的时间*/
float SPACE=4.0; /*功能部件数目*/
float INUM=5.0; /*需要流水处理的指令数目*/
int time = 1;/*记录运行时候时间周期*/
int slice=1;/*记录第几个时间片时的情况*/
void show(slice) /*显示流水线时空图*/
{
int i,j;
for(i=0;i<SPACE;i++)
{
for(j=0;j<slice;j++)
{
switch(i)
{
case 0:
if(j>=3)
printf("NL%d ",j-2);
else
printf(" ");
break;
case 1:
if(j>=2&&j<=TIME-2)
printf("MA%d ",j-1);
else
printf(" ");
break;
case 2:
if(j>=1&&j<=TIME-3)
printf("EA%d ",j);
else
printf(" ");
break;
case 3:
if(j<=TIME-4)
printf("ED%d ",j+1);
else
printf(" ");
}
}
printf("\n");
}
}
main()
{
char ch = ' ';
printf("请输入流水处理指令数目：");
scanf("%f",&INUM);
TIME=INUM+(SPACE-1);
Lable:
do{
printf("请输入要查看的时间片：");
scanf("%d",&slice);
}while(slice>TIME);
show(slice);
if(slice==TIME)
{
printf("流水线的吞吐率为：%f\n",INUM/TIME);
printf("流水线的加速比为：%f\n",INUM*SPACE/TIME);
printf("流水线的效率为：%f\n",INUM/TIME);
}
else
{
do
{
printf("继续？(Y/N)");
ch=getch();
printf("\n");
if(ch=='Y'||ch=='y')
goto Lable;
else if(ch=='N'||ch=='n')
break;
}while(ch!='Y'&&ch!='N'&&ch!='y'&&ch!='n');
}
}
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