10 #define MQNAME "/mytstqueue1"
14 struct mq_attr attr, attr2;
15 struct sigevent sigev;
20 attr.mq_msgsize = 100;
21 mq = mq_open(MQNAME, O_CREAT | O_RDWR | O_EXCL, 0666, &attr);
24 status = mq_unlink(MQNAME);
27 status = mq_getattr(mq, &attr2);
30 if (attr.mq_maxmsg != attr2.mq_maxmsg)
31 err(1, "mq_maxmsg changed");
32 if (attr.mq_msgsize != attr2.mq_msgsize)
33 err(1, "mq_msgsize changed");
35 sigev.sigev_notify = SIGEV_SIGNAL;
36 sigev.sigev_signo = SIGRTMIN;
37 status = mq_notify(mq, &sigev);
40 status = mq_notify(mq, &sigev);
42 err(1, "mq_notify 2");
43 else if (errno != EBUSY)
44 err(1, "mq_notify 3");
45 status = mq_notify(mq, NULL);
47 err(1, "mq_notify 4");
48 status = mq_close(mq);