12209 gettid() = 12209
12209 +++ exited with 0 +++
12214 gettid() = 2 /* 12214 in strace's PID NS */
12214 +++ exited with 0 +++
12226 gettid() = 3 /* 12226 in strace's PID NS */
12226 +++ exited with 0 +++
12239 gettid() = 4 /* 12239 in strace's PID NS */
12239 +++ exited with 0 +++
12249 gettid() = 5 /* 12249 in strace's PID NS */
12249 +++ exited with 0 +++
