(SERVER) CLIENT-SERVER (Session 7)

//link soal : https://www.dropbox.com/s/mbcwtg81dvfa9gc/O1-T0316-RG01-07.pdf?dl=0

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#include <sys/sem.h>
#include <sys/shm.h>
#include <sys/types.h>
#include <sys/ipc.h>

struct data{
    char phone_name[100];
    int quantity;
};

int main(){
    int total;
    srand(time(NULL));
    int random_satuan=rand()%2000000+5000000;
    struct sembuf tes;
    int hId=shmget(123456, sizeof(struct data),IPC_CREAT|0666);
    int eId=semget(123456,1,IPC_CREAT|0666);
    struct data *hp=(struct data *)shmat(hId,NULL,0666);
    do{
        tes.sem_num=0;
        tes.sem_op=-1;
        tes.sem_flg=0;
        semop(eId,&tes,1);
        if(strcmp(hp->phone_name,"exit")!=0){
            printf("Nama HP : %s\n",hp->phone_name);
            printf("Quantity : %d\n",hp->quantity);
            total=random_satuan*hp->quantity;
            printf("perUnit : %d\n",random_satuan);
            printf("Total : %d\n",total);
        }
        else
            printf("Keluar Program...");
    }while(strcmp(hp->phone_name,"exit")!=0);
    shmdt(&hp);
    shmctl(hId, IPC_RMID, 0);
    semctl(eId, 0, IPC_RMID);
    return 0;
}