1 -> Suspender thread signal handler caught signal 16 2Sigsuspend woke up by signal 16 3 -> Suspender thread signal handler caught signal 16 4Sigsuspend woke up by signal 16 5 -> Suspender thread signal handler caught signal 31 6Sigsuspend woke up by signal 31 7 -> Suspender thread signal handler caught signal 31 8Sigsuspend woke up by signal 31 9