main.c

linux terminal thread semophores

#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/msg.h>
#include <stdio.h>
#include <string.h>
     struct msgbuf {
                long mtype;       /* message type, must be > 0 */
                char mtext[1];    /* message data */
            };

int main()
{
  struct msgbuf m;
  int ID=1,msgc;
  key_t key; 
  if((key = ftok("./",'a'))==-1)
	perror("key");
  if((msgc=msgget(key,IPC_CREAT|0640))==-1)
	perror("msgget");
   m.mtype=1;
   strcpy(m.mtext,"bau bau");
  if(msgsnd(msgc, &m, sizeof(m), 0)==-1)
	perror("snd");
  printf("Merje!");
}