Function erlang_nif_sys::erlang_nif_sys_api::enif_get_local_pid

pub unsafe extern "C" fn enif_get_local_pid(
    env: *mut ErlNifEnv, 
    arg1: ERL_NIF_TERM, 
    pid: *mut ErlNifPid
) -> c_int

See enif_get_local_pid in the Erlang docs.