Inter process Communication(IPC) client Server  Code Operating System Problem

 

Inter process Communication Client Code using C language

 

• Interprocess Communication for Producer Consumer problem in UNIX (Pipes or Shared Memory)
• Students must submit the term work in the form of journal.
• Each assignment has to be well documented with problem definition, theory and code documentation.
• Staff in charge will assess the assignments continuously and grade or mark each assignment on completion date declared for each assignments.

IPC Client Code using C language

 

 #include  
 #include  
 #include  
 #include  
 #define SIZE 124  
 int main()  
 {  
   char *buff,*str;  
   buff=(char*)malloc(124);  
   str=(char*)malloc(124);  
 *str='\0';    
 int shmid,i=0;  
   if((shmid=shmget(9999,SIZE,IPC_CREAT|0666))<0)  
   printf("\nERROR IN SHMID\n");  
   if((buff=shmat(shmid,NULL,0))<0)  
     printf("ERROR IN SHM ATTACH\n");  
 while(1)  
   {  
     if(*str!='\0')  
     {  
     printf("\nTHE SERVER JUST SEND THIS MESSAGE\n\n");  
     fputs(str,stdout);  
     break;  
     }  
 strncpy(str,buff,SIZE);  
   }  
 *str='\0';  
 *buff='\0';  
 printf("\nREPLY \n\n");  
 fgets(str,SIZE,stdin);  
 strncpy(buff,str,SIZE);  
 sleep(1);  
 *buff='\0';  
 return(0);  
 }  
 Server   
 #include  
 #include  
 #include  
 #include  
 #define SIZE 124  
 int main()  
 {  
   char *buff,*str;  
   buff=(char*)malloc(124);  
   str=(char*)malloc(124);  
   int shmid;  
   if((shmid=shmget(9999,SIZE,IPC_CREAT|0666))<0)  
   printf("\nERROR IN SHMID\n");  
   if((buff=shmat(shmid,NULL,0))<0)  
     printf("ERROR IN SHM ATTACH\n");  
   printf("\nWRITE YOUR MSG\n");  
   fgets(str,SIZE,stdin);  
   strncpy(buff,str,SIZE);  
 sleep(1);  
 *buff='\0';  
 *str='\0';  
 printf("\n SERVER IS WAITING FOR REPLY........\n");  
 while(1)  
 {  
 if(*str!='\0')  
 {  
 printf("\nCLIENT JUST GAVE REPLY\n");  
 fputs(str,stdout);  
 break;  
 }  
 strncpy(str,buff,SIZE);  
 }  
   return(0);  
 }