Function libevent_sys::evrpc_register_rpc

pub unsafe extern "C" fn evrpc_register_rpc(
    arg1: *mut evrpc_base,
    arg2: *mut evrpc,
    arg3: Option<unsafe extern "C" fn(arg1: *mut evrpc_req_generic, arg2: *mut c_void)>,
    arg4: *mut c_void
) -> c_int