What's the sd_notify requivalent in openrc?

[tigerinus]

For systemd, it has a mechanism to let service to tell if it's ready (versus simply runs) that it allows service to call sd_notify with READY=1 string.

See https://www.man7.org/linux/man-pages/man3/sd_notify.3.html and https://www.freedesktop.org/software/systemd/man/systemd.service.html#Type=

What's the equivalent in openrc?

Thanks!