LINUX下CS模式学生管理系统.doc

/semun.h#if defined(_GNU_LIBRARY_) & !defined(_SEM_SEMUN_UNDEFINED) /* union semun is defined by including */#else /* according to X/OPEN we have to define it ourselves */ union semun int val; /* value for SETVAL */ struct semid_ds *buf; /* buffer for IPC_STAT, IPC_SET */ unsigned short int *array; /* array for GETALL, SETALL */ struct seminfo *_buf; /* buffer for IPC_INFO */ ;#endif/server.c#include#include#include#include#include#include #include#include#include #include #include #include#include #include #include #include #include#include #include #include semun.hstruct stu_info char stu_num12;char name10;char sex;/*0涓哄僐鐢燂紝1煱擑敺鐢?/char mobile_phone12;struct stu_info student;unsigned int number;struct stu_info stu100;FILE *in;FILE *out;int len;static int sem_id;void inputstu(int fd);void updatestu(int fd);void deletestu(int fd);void displaystu(int fd); void set_semvalue(); void del_semvalue(); void semaphore_p(); void semaphore_v();void reaper(int sig);void stuserver(int client_sockfd);int main() srand(unsigned int)getpid();sem_id = semget(key_t)1234, 1, 0666 | IPC_CREAT); set_semvalue(); int server_sockfd, client_sockfd; int server_len, client_len; struct sockaddr_in server_address; struct sockaddr_in client_address; server_sockfd = socket(AF_INET, SOCK_STREAM, 0); server_address.sin_family = AF_INET; server_address.sin_addr.s_addr = htonl(INADDR_ANY); server_address.sin_port = htons(9734); server_len = sizeof(server_address); bind(server_sockfd, (struct sockaddr *)&server_address, server_len); listen(server_sockfd, 5); signal(SIGCHLD,reaper); while(1) printf(server waitingn); client_len = sizeof(client_address); client_sockfd = accept(server_sockfd,(struct sockaddr *)&client_address, &client_len); if(fork() = 0) stuserver(client_sockfd); exit(0); else close(client_sockfd); del_semvalue();void stuserver(int client_sockfd)char ch;while(1)read(client_sockfd,&ch,1);if(ch=q)break;switch(ch)case 1:inputstu(client_sockfd); break;case 2:updatestu(client_sockfd);break;case 3:deletestu(client_sockfd);break;case 4:displaystu(client_sockfd);break;case r:printf(ninit student tablen);if(out=fopen(c.doc,w)=NULL) return;number=0;fwrite(&number,sizeof(unsigned int),1,out);fflush(out);fclose(out);break;default:break;void inputstu(int fd)char ch;len=sizeof(struct stu_info);while(1)memset(&student,0,len);read(fd,&student,len);if(out=fopen(c.doc,r+)=NULL) return;semaphore_p();fread(&number,sizeof(unsigned int),1,out);number+;fseek(out,0L,SEEK_SET);fwrite(&number,sizeof(unsigned int),1,out);fflush(out);fseek(out,0L,SEEK_END);fwrite(&student,len,1,out);fflush(out);fclose(out);semaphore_v();read(fd,&ch,1);if(ch!=Y)break;void updatestu(int fd)len=sizeof(struct stu_info);memset(&student,0,len);read(fd,&student,len);semaphore_p();in=fopen(c.doc,r+);fread(&number,sizeof(unsigned int),1,in);unsigned int j;long kk;for(j=0;jnumber;j+)fread(&stu0,len,1,in);if(strcmp(student.stu_num,stu0.stu_num)=0)kk=len;fseek(in,-kk,SEEK_CUR);fwrite(&student,len,1,in);break;fflush(in);fclose(in);semaphore_v();char buf20;memset(buf,0,20);if(j=number)strcpy(buf,娌亷湁杩欐郒璁斅綍n);else strcpy(buf,熃敼鎴愬姛n);write(fd,buf,20);void deletestu(int fd)char stu_num12;char buf20;semaphore_p();in=fopen(c.doc,r);fread(&number,sizeof(unsigned int),1,in);memset(stu,0,sizeof(stu);len=sizeof(struct stu_info);fread(stu,len,number,in);unsigned int i;char f;while(1)memset(stu_num,0,12);memset(buf,0,20);read(fd,stu_num,12);for(i=0;inumber;i+)if(strcmp(stu_num,stui.stu_num)=0)break;if(i=number) strcpy(buf,娌湁杩欐潯璁板綍n);else number-;for(;i= 0)/* empty */;void set_semvalue() union semun sem_union; sem_union.val = 1; semctl(sem_id, 0, SETVAL, sem_union);void semaphore_v() struct sembuf sem_b; sem_b.sem_num = 0; sem_b.sem_op = 1; sem_b.sem_flg = SEM_UNDO; semop(sem_id, &sem_b, 1);void semaphore_p() struct sembuf sem_b; sem_b.sem_num = 0; sem_b.sem_op = -1; sem_b.sem_flg = SEM_UNDO; semop(sem_id, &sem_b, 1);void del_semvalue() union semun sem_union; semctl(sem_id, 0, IPC_RMID, sem_union);/client.c#include#include#include#include#include#include#include#include #includestruct stu_info char stu_num12;char name10;char sex;/*0涓哄僐鐢燂紝1煱擑敺鐢?/char mobile_phone12;struct stu_info student;unsigned int number;struct stu_info stu100;int len;void inputstu(int fd);void updatestu(int fd);void deletestu(int fd);void displaystu(int fd);void commanddisp()printf(-n); printf(|-鄆敓鍩烘湰熃亷伅绠亹-|n);printf(|-1.鍩烘湰熃亷伅鎻掑叆.-2.鍩烘湰熃亷伅熃騿敼-|n);printf(|-3.鍩烘湰熃亷伅鍒犻櫎.-4.鍩烘湰熃亷伅鏄剧偢-|n);printf(|-r.鍒郮鐺栵巻绗駝竴娆亴娇鐢椂鐢紒锛佹厧鐢曍-q.瑙鍑?-|n);printf(|-璇疯緭鍏綘鐨勯夋嫨锛?-|n);printf(-n);int main(int argc,char *argv)char*host = localhost;int socf;struct sockaddr_in addr;struct hostent*phe;int result;switch (argc) case 1:host = localhost;break;case 2:host = argv1;break;default:return;memset(&addr, 0, sizeof(addr);addr.sin_family=AF_INET;addr.sin_port = htons(9734);if ( phe = gethostbyname(host) )memcpy(&addr.sin_addr, phe-h_addr, phe-h_length);else if ( (addr.sin_addr.s_addr = inet_addr(host) = INADDR_NONE )printf(cant get %s host entryn, host);socf=socket(AF_INET,SOCK_STREAM,0);len =sizeof(addr);result=connect(socf,(struct sockaddr *)&addr,len);if(result = -1)close(socf);perror(connect errorn);return -1;/commanddisp();/char ch;while(1)doch=getchar();while(ch=n);write(socf,&ch,1);if(ch=q)break;switch(ch)case 1:inputstu(socf); break;case 2:updatestu(socf);break;case 3:deletestu(socf);break;case 4:displaystu(socf);break;case r:break;default:break;printf(Press any key to continue);getchar();getchar();system(clear);commanddisp();void inputstu(int fd)printf(n-璇疯緭鍏儏鐢熶俊鎭?-n);char p;char ch;len=sizeof(struct stu_info);while(1)memset(&student,0,sizeof(student);printf(瀛彿:);scanf(%s,student.stu_num);printf(濮撳悕:);scanf(%s,);printf(鎬髿锛?鏄蜚僐锛?鏄蝈敺锛?);dostudent.sex=getchar();while(student.sex=n);printf(鎵嬫枮鍙?);scanf(%s,student.mobile_phone);write(fd,&student,len);printf(鏄惁缁趸緭鍏锛廚n);fflush(stdin);dop=getchar();while(p=n);if(p!=y&p!=Y)ch=N;write(fd,&ch,1);break;ch=Y;write(fd,&ch,1);void updatestu(int fd)printf(n-瀛敓淇伅淇敼-n);printf(璇疯緭鍏儎奡鏀囫鐢熺殑瀛彿锛?);memset(&student,0,sizeof(student);scanf(%s,student.stu_num);printf(濮撳悕:);scanf(%s,);printf(鎬髿锛?鏄蜚僐锛?鏄蝈敺锛?);dostudent.sex=getchar();while(student.sex=n);printf(鎵嬫枮鍙?);scanf(%s,student.mobile_phone);len=sizeof(struct stu_info);write(fd,&student,len);char buf21;memset(buf,0,21);read(fd,buf,20);p