порождать процесс (spawn a process)
Ошибки (баги) (Bugs)
POSIX.1 says that when POSIX_SPAWN_SETSCHEDULER is specified in
spawn-flags, then the POSIX_SPAWN_SETSCHEDPARAM (if present) is
ignored. However, before glibc 2.14, calls to posix_spawn()
failed with an error if POSIX_SPAWN_SETSCHEDULER was specified
without also specifying POSIX_SPAWN_SETSCHEDPARAM.
