上机报告操作系统进程调度

一：源程序：
#include "stdlib.h"
#include "stdio.h"
#include "conio.h"
struct jincheng_type
{
       int pid;
       int youxian;
       int daxiao;
};         //进程模拟。
struct jincheng_type jiuxu[20]; //就绪数组。
 
struct jincheng_type guaqi[20]; //挂起数组。
 
struct jincheng_type cpu;  //运行进程。
 
int NUM1=0,NUM2=0,first=0;
 
void create()
{
       if(NUM1>=20)
       {
              printf("\n就绪进程已满,请先删除或挂起进程\n");
       }
       else
       {
              if(first==0)
              {
                     printf("\n这是你第一次输入进程信息,它将直接调入CPU运行!");
                     printf("\n请输入新进程的pid\n");
                     scanf("%d",&cpu.pid);
                     printf("请输入新进程的优先级\n");
                     scanf("%d",&cpu.youxian);
                     printf("请输入新进程的大小\n");
                     scanf("%d",&cpu.daxiao);
                     first++;
              }
              else
              {
                     printf("\n请输入新进程的pid\n");
                     scanf("%d",&jiuxu[NUM1].pid);
                     printf("请输入新进程的优先级\n");
                     scanf("%d",&jiuxu[NUM1].youxian);
                     printf("请输入新进程的大小\n");
                     scanf("%d",&jiuxu[NUM1].daxiao);
                     NUM1++;
              }
       }
}
 
//新建进程。
 
void run()
{
       printf("\n现在正在运行的进程的资料如下:\n");
       printf("PID码为:%d;\n优先级为:%d;\n大小为:%d.",cpu.pid,cpu.youxian,cpu.daxiao);
}
 
//查看运行进程。
 
 
void huanchua()
{
       int i,p,m,n,t;
       p=jiuxu[0].youxian;
       for(i=0;i       {
              if(p>jiuxu[i].youxian)
              {
                     p=jiuxu[i].youxian;
              }
       }
       for(i=0;i<20;i++)
       {
              if(p==jiuxu[i].youxian)
              {
                     m=cpu.daxiao;
                     cpu.daxiao=jiuxu[i].daxiao;
                     n=cpu.pid;
                     cpu.pid=jiuxu[i].pid;
                     t=cpu.youxian;
                     cpu.youxian=jiuxu[i].youxian;
                     break;
              }
              else continue;
       }
       for(i;i       {
              jiuxu[i].daxiao=jiuxu[i+1].daxiao;
              jiuxu[i].pid=jiuxu[i+1].pid;
              jiuxu[i].youxian=jiuxu[i+1].youxian;
       }
       jiuxu[i].daxiao=m;
       jiuxu[i].pid=n;
       jiuxu[i].youxian=t;
}
 

 

void huanchub()
{
       int i,p;
       printf("\n请输入想要挂起的进程的PID码:\n(在以下中选:");
       for(i=0;i       {
              printf("%d ",jiuxu[i].pid);
       }
       printf(")\n");
       scanf("%d",&p);
       for(i=0;i       {
              if(p==jiuxu[i].pid)
              {
                     guaqi[NUM2].daxiao=jiuxu[i].daxiao;
                     guaqi[NUM2].pid=jiuxu[i].pid;
                     guaqi[NUM2].youxian=jiuxu[i].youxian;
                     NUM2++;
                     break;
              }
              else continue;
       }
       for(i;i       {
              jiuxu[i].daxiao=jiuxu[i+1].daxiao;
              jiuxu[i].pid=jiuxu[i+1].pid;
              jiuxu[i].youxian=jiuxu[i+1].youxian;
       }                  
       NUM1--;
}
void huanchuc()
{
       int i;

 

       jiuxu[NUM1].daxiao=guaqi[0].daxiao;
       jiuxu[NUM1].pid=guaqi[0].pid;
       jiuxu[NUM1].youxian=guaqi[0].youxian;
       NUM1++;
       for(i=0;i       {
              guaqi[i].daxiao=guaqi[i+1].daxiao;
              guaqi[i].pid=guaqi[i+1].pid;
              guaqi[i].youxian=guaqi[i+1].youxian;
       }
       NUM2--;
}
 
void huanchud()
{
       int i,p,m,n,t;
       printf("\n请输入想要运行的进程的PID码:\n(在以下中选:");
       for(i=0;i       {
              printf("%d ",jiuxu[i].pid);
       }
       printf(")\n");
       scanf("%d",&p);
       for(i=0;i       {
              if(p==jiuxu[i].pid)
              {
                     m=cpu.daxiao;
                     cpu.daxiao=jiuxu[i].daxiao;
                     jiuxu[i].daxiao=m;
                     n=cpu.pid;
                     cpu.pid=jiuxu[i].pid;
                     jiuxu[i].pid=n;
                     t=cpu.youxian;
                     cpu.youxian=jiuxu[i].youxian;
                     jiuxu[i].youxian=t;
                     break;
              }
              else continue;
       }
}
void huanchue()
{
       int i,p;
       printf("\n请输入想要调入就绪的进程的PID码:\n(在以下中选:");
       for(i=0;i