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/** * esempio base di creazione e rimozione di una coda di messaggi */ #include #include #include #include #include int main() { int ds_coda; key_t chiave = 40; // scelgo una chiave arbitraria (sperando che sia libera...) printf("Creo la coda di messaggi di chiave %d... ", chiave); if ((ds_coda = msgget(chiave, IPC_CREAT | IPC_EXCL | 0660)) == -1) { perror("msgget"); exit(1); } printf("creata (descrittore %d)\n", ds_coda); sleep(5); printf("Chiudo la coda.\n"); msgctl(ds_coda, IPC_RMID, NULL); }