- // Block SIGHUP; only the main thread should see that.
- // (This isn't strictly required, but it makes it easier to debug that indeed
- // SIGUSR1 was what woke us up.)
- sigset_t set;
- sigaddset(&set, SIGHUP);
- int err = pthread_sigmask(SIG_BLOCK, &set, NULL);
- if (err != 0) {
- errno = err;
- log_perror("pthread_sigmask");
- exit(1);