操作系统-进程管理源代码

操作系统-进程管理源代码
调试通过可以运行。

//#include "conio.h"
#include "stdio.h"
#include "stdlib.h"
struct jincheng_type
{
int pid;
int youxian;
int daxiao;
int xiaoxi;
int live;
};

struct jincheng_type neicun[30],waicun[30];
int num=0,pid_l;
char m;
create( ) /* 创建进程 */
{
if(num>=30)
{
printf("\n内存已满，请先结束或换出进程\n");
}
else
{
printf("\n请输入新进程的pid\n");
scanf("%d",&neicun[num+1].pid);
printf("\n请输入新进程的优先级\n");
scanf("%d",&neicun[num+1].youxian);
printf("\n请输入新进程的大小\n");
scanf("%d",&neicun[num+1].daxiao);
printf("\n请输入新进程的消息\n");
scanf("%d",&neicun[num+1].xiaoxi);
neicun[num+1].live=1;
num++;
}
m=getchar();
return neicun[num-1].live;
}
viewrun( )/*查看运行进程*/
{
int id;
printf("\n请输入需要查看的进程的pid\n");
scanf("%d",&id);

if(id>0&&id<=30&&neicun[id].live==1)
{
printf("\n进程的pid是: %d\n",neicun[id].pid);
printf("进程的优先级是: %d\n",neicun[id].youxian);
printf("进程的大小是:%d\n",neicun[id].daxiao);
printf("进程的消息是:%d\n",neicun[id].xiaoxi);
}
else
{
printf("\n所查看运行进程不存在\n");
}
printf("请按回车退出查看\n");
id=getchar();
}
tihuan()/*替换某个进程*/
{
int pid1,pid2;
char c;
printf("\n请输入被替换进程的pid\n");
scanf("%d",&pid1);
printf("\n请输入替换进程的pid\n");
scanf("%d",&pid2);
if(pid1>0&&pid1<=30&&neicun[pid1].live==1)
{
if(neicun[pid1].youxian>neicun[pid2].youxian)
{
waicun[30].pid=neicun[pid1].pid;
waicun[30].youxian=neicun[pid1].youxian;
waicun[30].daxiao=neicun[pid1].daxiao;
waicun[30].xiaoxi=neicun[pid1].xiaoxi;

neicun[pid1].pid=neicun[pid2].pid;
neicun[pid1].youxian=neicun[pid2].youxian;
neicun[pid1].daxiao=neicun[pid2].daxiao;
neicun[pid1].xiaoxi=neicun[pid2].xiaoxi;

neicun[pid2].pid=waicun[30].pid;
neicun[pid2].youxian=waicun[30].youxian;
neicun[pid2].daxiao=waicun[30].daxiao;
neicun[pid2].xiaoxi=waicun[30].xiaoxi;

printf("\n替换完成\n");
printf("\n被替换进程的pid是: %d\n",waicun[30].pid);
printf("被替换进程的优先级是: %d\n",waicun[30].youxian);
printf("被替换进程的大小是:%d\
n",waicun[30].daxiao);
printf("被替换进程的消息是:%d\n",waicun[30].xiaoxi);
}
else
{
printf("\n进程优先级不够大");
}
}
else
{
printf("所查看运行进程不存在");
}

printf("请按回车退出换出进程\n");
c=getchar();
return;
}
kill()/*中断运行进程*/
{

int id;
char a;
printf("\n请输入需要中断的进程的pid\n");
scanf("%d",&id);
if(id>0&&id<30&&neicun[id].live==1)
{
neicun[id].live=0;
printf("该进程已经中断!");
}
else
{
printf("该进程不存在!");
}
printf("请按回车退出\n");
a=getchar();
return ;
}
tongxun( )/*进程之间通信*/
{
int tpid1,tpid2;
int buffer;
char d;
printf("\n请输入通信源进程pid\n");
scanf("%d",&tpid1);
printf("\n请输入通信目的进程pid\n");
scanf("%d",&tpid2);
if(tpid1>0&&tpid1<30&&neicun[tpid1].live==1)
{
buffer=neicun[tpid1].xiaoxi;
neicun[tpid1].xiaoxi=neicun[tpid2].xiaoxi;
neicun[tpid2].xiaoxi=buffer;
printf("\n源进程的消息是: %d\n",neicun[tpid1].xiaoxi);
printf("\n目的进程的消息是: %d\n",neicun[tpid2].xiaoxi);
}
else
{
printf("\n所通信的运行进程不存在\n");
}
printf("\n请按回车退出进程通信\n");
d=getchar();
return 0;
}
main()
{
int n,m,i;
char a;
n=1;
while(n==1)
{
//system("cls");
printf("\n********************************************");
printf("\n* 进程管理系统 *");
printf("\n********************************************");
printf("\n 1.创建新的进程 2.查看运行进程 ");
printf("\n 3.替换某个进程 4.中断运行进程 ");
printf("\n 5.进程之间通信 6.退出 ");
printf("\n********************************************");
printf("\n请选择（1～6) ");
a=getchar();


switch(a)
{
case'1':
create( );
break;
case'2':
viewrun( );
break;
case'3':
tihuan();
break;
case'4':
kill( );
break;
case'5':
tongxun( );
break;
case'6': exit(0);
default: n=0;
}

}
}