CHILD_MAX
EXIT_FAILURE
EXIT_SUCCESS
OPEN_MAX
WNOHANG
WUNTRACED
CLONE
CLONE_VM
POSIX_SPAWN_SETPGROUP
POSIX_SPAWN_SETSCHEDPARAM
POSIX_SPAWN_SETSCHEDULER
PRIO_PROCESS
PRIO_PGRP
PRIO_USER
