Лабораторная работа №41 / server

#include <sys/types.h>

#include <sys/ipc.h>

#include <sys/sem.h>

#include <sys/shm.h>

#include "shmem.h"

int main()

{

Message *msgptr;

key_t key;

int shmid, semid;

if((key=ftok("server",'A'))<0){

printf("error(key)\n");

exit(1);}

if((shmid=shmget(key,sizeof(Message),PERM|IPC_CREAT))<0){

printf("error\n");

exit(1);}

if((msgptr=(Message *)shmat(shmid,0,0))<0){

printf("error(connecting)\n");

exit(1);}

if((semid=semget(key,2,PERM|IPC_CREAT))<0){

printf("Error making semafor\n");

exit(1);}

if(semop(semid, &proc_wait[0],1)<0){

printf("error executig operation\n");

exit(1);}

if(semop(semid,&mem_lock[0],2)<0){

printf("error exe operation\n");

exit(1);}

printf("%s",msgptr->buff);

if(semop(semid,&mem_unlock[0],1)<0){

printf("eror exe operation\n");

exit(1);}

if (shmdt(msgptr)<0){

printf("error disconnecting\n");

exit(1);}

exit(0);}