Constant std::os::fortanix_sgx::usercalls::raw::EV_RETURNQ_NOT_EMPTY

pub const EV_RETURNQ_NOT_EMPTY: u64 = 2; // 2u64

🔬 This is a nightly-only experimental API. (sgx_platform #56975)

An event that will be triggered by userspace when the return queue is not or no longer empty.