slide 12 of 19

Using System V Shared Memory

1. Start program as a single process
2. Create a new shared segment of size b
shmid = shmget(IPC_PRIVATE, b, (IPC_CREAT | 0666));
3. Attach to it (map it)
   shmptr = shmat(shmid, 0, 0);
4. Set segment to auto-destruct
   shmctl(shmid, IPC_RMID, 0);
5. Use fork() to create processes
6. Optionally call shmdt(shmptr); when done