2023年实验报告实验七

浙江大学城市学院实验报告课程名称操作系统原理实验实验项目名称实验七进程通信一一消息队列学生姓名潘唯帆专业班级计算1003学号31001172实验成绩指导老师（署名）日期注意：务请保存好各自的源代码，已备后用。请上传到BB平台。一.实验目的和规定.了解Linux系统的进程间通信机构（IPC）;.理解Linux关于消息队列的概念；.掌握Linux支持消息队列的系统调用；.巩固进程同步概念。二、实验内容实现并发进程间消息的发送与接受。三、实验环节1、消息的发送与接受1）。编译运营给出的c1ient.c和server.c,观测运营结果。四、讨论、心得记录实验感受、上机过程中碰到的困难及解决办法、遗留的问题、意见和建议等。文件⑹编辑⑹查看&）终端①标签⑧帮助®）[rootolocalhostpanweifanj=gcc-oserverserver.cserver.c：Infunctionserver：server.c：22：警告：隐式声明与内建函数f)rintf不兼容server.c：26：警告：隐式声明与内建函数exit不兼容[rootelocalhostpanweifan]=./server(server)received(server)received(server)received(server)received(server)received(server)received(server)received(server)received(server)received(server)received[root®localhostpanweifan]=文件6编辑⑹查看Q)终端①标签⑥帮助出)[root®localhostpanwetfan]2gcc-oclientcltent.cclient.c：InfunctionClient"：client.c：22：警告：隐式声明与内建函数prtntf不兼容client.c：26：警告：隐式声明与内建函数exif不兼容[root^localhostpanweifan]=./client(client)sent(cltent)sent(client)sent(clienl)sent(client)sent(clienl)sent(client)sent(client)sent(client)sent(client)sent[root®localhostpanweifan)-12）请给上述程序添加同步控制，实现同步运营。

root@localhost:/panweifan文件的编辑©查看。终端①标签⑧帮助电)[root©localhostpanweifan1=./server(server)received(server)received(server)received(server)received(server)received(server)received(server)received(server)received(server)received(server)receive。|root©localhostpanweiianj-二#inc1udc<sys/typcs.h>#inelude<sys/msg.h>#inelude<sys/ipc.h>#defineMSGKEY75structmsgform(dongmtype;charmtcxt[1000];}msg;intmsgqid;voidserver()(/*创建75#消息队列*/omsgqid=msgget(MSGKEY,0777|IPC_CREAT);ado。/*接受消息*/0msgrcv(msgqid,&msg,1030,0,0);printf("(server)received\n");dockf(msg,0,0)；。}while(msg.mtype!=1);/*删除消息队列，归还资源*/msgctl(msgqid,IPC_RMID,0);°exit(O);)main()server();#include<sys/types.h>#inelude<sys/msg.h>#includc<sys/ipc.h>efineMSGKEY75structmsgform(longmtype;ocharmtext[1000];)msg;intmsgqid;voidclicnt()(nti;/*打开75#消息队列*/®msgqid=msgget(MSGKEY,0777);ofor(i=10;i>=l;i--)(wmsg.mtype=i;。printf("(client)sent\n");/*发送消息*/sgsnd(msgqid,&msg,1024,0);1ockf(msgJ,0);0}exit(0);niain()clicnt();2、编写程序：使用消息队列，实现具有下列功能两个程序（进程）:1）程序A负责接受用户来自键盘的输入；2）程序B负责实时输出用户由程序A接受的字符。程序A和程序B可分别在两个进程上同时运营。root@localhost:/panwelfan文件6编转⑥查看9终端①标签⑧帮助回[rootolocalhostpanweifan)^./clientIhaveadreamthatonedayeveryonewilllivehappy-liferoot@localhost:/panwelfan文件⑹编辑⑹查看Q)终端①标签⑥帮助回[root®localhostpanweifan]-./server(server)received：I(server)received：have(server)received：a(server)received：dream(server)received：that(server)received：one(server)received：day(server)received：everyone(server)received：will(server)received：1ive(server)received：a(server)received:happy(server)received：1ife(server)received：.inc1ude<sys/types.h>include<sys/msg.h>inelude<sys/ipc.h>#defineMSGKEY75structmsgform(010ngmtype;charmtext[1000];}msg;intmsgqid;voidclient()inti；。/*打开75#消息队列*/»msgqid=msggei(MSGKEY,0777)；»for(i=100;i>=1；i—)(Mmsg.mtype=i;®scanf("%s",msg.mtcxt);。/*发送消息*/wmsgsnd(msgqid,&msg,1024,0);»1ockf(msg,1,0);exit(0);)main()(client();inc1ude<sys/types.h>inc1ude<sys/msg.h>inc1ude<sys/ipc.h>defineMSGKEY75structmsgform{longmtype;charmtext[1000];

intmsgqid;voidserver()(。/*创建75#消息队列*/msgqid=msggel(MSGKEY,0777|IPC_CREAT)；do/*接受消息*/msgrcv(msgqid,&msg.l030,0,0);%s\n0,msg.mt