--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19321, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19328, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19323, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
+++ exited with 0 +++