MPC_RUNTIME_FLAG_REGISTERED
mpc->mpc_runtime_flags |= MPC_RUNTIME_FLAG_REGISTERED;
if ((mpc->mpc_runtime_flags & MPC_RUNTIME_FLAG_REGISTERED) == 0) {
mpc->mpc_runtime_flags &= ~MPC_RUNTIME_FLAG_REGISTERED;
if ((mpc->mpc_runtime_flags & MPC_RUNTIME_FLAG_REGISTERED)