--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3113, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=0} ---
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3111, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3110, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3100, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
+++ exited with 0 +++