Struct NoHandler 

pub struct NoHandler;

Type-level “no callback” sentinel.

Pass Handlers::NONE (which is None::<&Handler<NoHandler>>) to any callback-accepting method to leave that callback unset. NoHandler implements every generated callback trait, so the method’s callback generic is inferred as NoHandler without a per-callback helper or turbofish — including methods with several callback parameters (e.g. async_add_subscription’s image handlers). Its callback methods are unreachable: the C side is handed a null callback + null clientd, so they can never fire.

Trait Implementations

impl AeronAgentCloseFuncCallback for NoHandler

fn handle_aeron_agent_on_close_func(&mut self)

impl AeronAgentDoWorkFuncCallback for NoHandler

fn handle_aeron_agent_do_work_func(&mut self) -> c_int

impl AeronAgentStartFuncCallback for NoHandler

fn handle_aeron_agent_on_start_func(&mut self, role_name: &str)

impl AeronAvailableCounterCallback for NoHandler

fn handle_aeron_on_available_counter( &mut self, counters_reader: AeronCountersReader, registration_id: i64, counter_id: i32, )

impl AeronAvailableImageCallback for NoHandler

fn handle_aeron_on_available_image( &mut self, subscription: AeronSubscription, image: AeronImage, )

impl AeronBlockHandlerCallback for NoHandler

fn handle_aeron_block_handler( &mut self, buffer: &[u8], session_id: i32, term_id: i32, )

impl AeronCloseClientCallback for NoHandler

fn handle_aeron_on_close_client(&mut self)

impl AeronCongestionControlStrategyInitialWindowLengthFuncCallback for NoHandler

fn handle_aeron_congestion_control_strategy_initial_window_length_func( &mut self, ) -> i32

impl AeronCongestionControlStrategyMaxWindowLengthFuncCallback for NoHandler

fn handle_aeron_congestion_control_strategy_max_window_length_func( &mut self, ) -> i32

impl AeronCongestionControlStrategyRttmFuncCallback for NoHandler

fn handle_aeron_congestion_control_strategy_on_rttm_func( &mut self, now_ns: i64, rtt_ns: i64, source_address: SockaddrStorage, )

impl AeronCongestionControlStrategyRttmSentFuncCallback for NoHandler

fn handle_aeron_congestion_control_strategy_on_rttm_sent_func( &mut self, now_ns: i64, )

impl AeronCongestionControlStrategyShouldMeasureRttFuncCallback for NoHandler

fn handle_aeron_congestion_control_strategy_should_measure_rtt_func( &mut self, now_ns: i64, ) -> bool

impl AeronControlledFragmentHandlerCallback for NoHandler

fn handle_aeron_controlled_fragment_handler( &mut self, buffer: &[u8], header: AeronHeader, ) -> aeron_controlled_fragment_handler_action_t

impl AeronCountersReaderForeachCounterFuncCallback for NoHandler

fn handle_aeron_counters_reader_foreach_counter_func( &mut self, value: i64, id: i32, type_id: i32, key: &[u8], label: &str, )

impl AeronCountersReaderForeachMetadataFuncCallback for NoHandler

fn handle_aeron_counters_reader_foreach_metadata_func( &mut self, id: i32, type_id: i32, key: &[u8], label: &[u8], )

impl AeronDriverTerminationHookFuncCallback for NoHandler

fn handle_aeron_driver_termination_hook_func(&mut self)

impl AeronDriverTerminationValidatorFuncCallback for NoHandler

fn handle_aeron_driver_termination_validator_func( &mut self, buffer: &mut [u8], ) -> bool

impl AeronDutyCycleTrackerMeasureAndUpdateFuncCallback for NoHandler

fn handle_aeron_duty_cycle_tracker_measure_and_update_func( &mut self, now_ns: i64, )

impl AeronDutyCycleTrackerUpdateFuncCallback for NoHandler

fn handle_aeron_duty_cycle_tracker_update_func(&mut self, now_ns: i64)

impl AeronEndOfLifeResourceFreeCallback for NoHandler

fn handle_aeron_end_of_life_resource_free(&mut self) -> bool

impl AeronErrorHandlerCallback for NoHandler

fn handle_aeron_error_handler(&mut self, errcode: c_int, message: &str)

impl AeronErrorLogReaderFuncCallback for NoHandler

fn handle_aeron_error_log_reader_func( &mut self, observation_count: i32, first_observation_timestamp: i64, last_observation_timestamp: i64, error: &str, )

impl AeronFlowControlStrategyErrorFuncCallback for NoHandler

fn handle_aeron_flow_control_strategy_on_error_func( &mut self, error: &[u8], recv_addr: SockaddrStorage, now_ns: i64, )

impl AeronFlowControlStrategyIdleFuncCallback for NoHandler

fn handle_aeron_flow_control_strategy_on_idle_func( &mut self, now_ns: i64, snd_lmt: i64, snd_pos: i64, is_end_of_stream: bool, ) -> i64

impl AeronFlowControlStrategyMaxRetransmissionLengthFuncCallback for NoHandler

fn handle_aeron_flow_control_strategy_max_retransmission_length_func( &mut self, term_offset: usize, resend_length: usize, term_buffer_length: usize, mtu_length: usize, ) -> usize

impl AeronFlowControlStrategySetupFuncCallback for NoHandler

fn handle_aeron_flow_control_strategy_on_setup_func( &mut self, setup: &[u8], now_ns: i64, snd_lmt: i64, position_bits_to_shift: usize, snd_pos: i64, ) -> i64

impl AeronFlowControlStrategySmFuncCallback for NoHandler

fn handle_aeron_flow_control_strategy_on_sm_func( &mut self, sm: &[u8], recv_addr: SockaddrStorage, snd_lmt: i64, initial_term_id: i32, position_bits_to_shift: usize, now_ns: i64, ) -> i64

impl AeronFlowControlStrategyTriggerSendSetupFuncCallback for NoHandler

fn handle_aeron_flow_control_strategy_on_trigger_send_setup_func( &mut self, sm: &[u8], recv_addr: SockaddrStorage, now_ns: i64, )

impl AeronFprintfHandlerCallback for NoHandler

fn handle_aeron_fprintf_handler( &mut self, arg1: &str, arg2: u64, arg4: &str, arg5: *mut c_char, ) -> c_int

impl AeronFragmentHandlerCallback for NoHandler

fn handle_aeron_fragment_handler(&mut self, buffer: &[u8], header: AeronHeader)

impl AeronIdleStrategyFuncCallback for NoHandler

fn handle_aeron_idle_strategy_func(&mut self, work_count: c_int)

impl AeronIfaddrFuncCallback for NoHandler

fn handle_aeron_ifaddr_func( &mut self, name: &str, addr: Sockaddr, netmask: Sockaddr, flags: c_uint, ) -> c_int

impl AeronInt64CounterMapForEachFuncCallback for NoHandler

fn handle_aeron_int64_counter_map_for_each_func(&mut self, key: i64, value: i64)

impl AeronInt64CounterMapPredicateFuncCallback for NoHandler

fn handle_aeron_int64_counter_map_predicate_func( &mut self, key: i64, value: i64, ) -> bool

impl AeronInt64ToPtrHashMapForEachFuncCallback for NoHandler

fn handle_aeron_int64_to_ptr_hash_map_for_each_func( &mut self, key: i64, value: *mut c_void, )

impl AeronInt64ToPtrHashMapPredicateFuncCallback for NoHandler

fn handle_aeron_int64_to_ptr_hash_map_predicate_func( &mut self, key: i64, value: *mut c_void, ) -> bool

impl AeronInt64ToTaggedPtrHashMapForEachFuncCallback for NoHandler

fn handle_aeron_int64_to_tagged_ptr_hash_map_for_each_func( &mut self, key: i64, tag: u32, value: *mut c_void, )

impl AeronInt64ToTaggedPtrHashMapPredicateFuncCallback for NoHandler

fn handle_aeron_int64_to_tagged_ptr_hash_map_predicate_func( &mut self, key: i64, tag: u32, value: *mut c_void, ) -> bool

impl AeronLossGeneratorShouldDropFrameDetailedFuncCallback for NoHandler

fn handle_aeron_loss_generator_should_drop_frame_detailed_func( &mut self, address: *const sockaddr_storage, buffer: *const u8, stream_id: i32, session_id: i32, term_id: i32, term_offset: i32, length: i32, ) -> bool

impl AeronLossGeneratorShouldDropFrameSimpleFuncCallback for NoHandler

fn handle_aeron_loss_generator_should_drop_frame_simple_func( &mut self, address: *const sockaddr_storage, buffer: &[u8], ) -> bool

impl AeronLossReporterReadEntryFuncCallback for NoHandler

fn handle_aeron_loss_reporter_read_entry_func( &mut self, observation_count: i64, total_bytes_lost: i64, first_observation_timestamp: i64, last_observation_timestamp: i64, session_id: i32, stream_id: i32, channel: &str, source: &str, )

impl AeronNewPublicationCallback for NoHandler

fn handle_aeron_on_new_publication( &mut self, channel: &str, stream_id: i32, session_id: i32, correlation_id: i64, )

impl AeronNewSubscriptionCallback for NoHandler

fn handle_aeron_on_new_subscription( &mut self, channel: &str, stream_id: i32, correlation_id: i64, )

impl AeronNotificationCallback for NoHandler

fn handle_aeron_notification(&mut self)

impl AeronPortManagerFreeManagedPortFuncCallback for NoHandler

fn handle_aeron_port_manager_free_managed_port_func( &mut self, bind_addr: SockaddrStorage, )

impl AeronPortManagerGetManagedPortFuncCallback for NoHandler

fn handle_aeron_port_manager_get_managed_port_func( &mut self, bind_addr_out: SockaddrStorage, udp_channel: AeronUdpChannel, bind_addr: SockaddrStorage, ) -> c_int

impl AeronPublicationErrorFrameHandlerCallback for NoHandler

fn handle_aeron_publication_error_frame_handler( &mut self, error_frame: AeronPublicationErrorValues, )

impl AeronQueueDrainFuncCallback for NoHandler

fn handle_aeron_queue_drain_func(&mut self, item: *mut c_void)

impl AeronRbControlledHandlerCallback for NoHandler

fn handle_aeron_rb_controlled_handler( &mut self, arg1: i32, arg2: *const c_void, arg3: usize, ) -> aeron_rb_read_action_t

impl AeronRbHandlerCallback for NoHandler

fn handle_aeron_rb_handler( &mut self, arg1: i32, arg2: *const c_void, arg3: usize, )

impl AeronReceiveChannelLossSupplierFuncCallback for NoHandler

fn handle_aeron_receive_channel_loss_supplier_func( &mut self, endpoint: *mut aeron_receive_channel_endpoint_stct, )

impl AeronReservedValueSupplierCallback for NoHandler

fn handle_aeron_reserved_value_supplier(&mut self, buffer: &mut [u8]) -> i64

impl AeronRetransmitHandlerResendFuncCallback for NoHandler

fn handle_aeron_retransmit_handler_resend_func( &mut self, term_id: i32, term_offset: i32, length: usize, ) -> c_int

impl AeronSendChannelLossSupplierFuncCallback for NoHandler

fn handle_aeron_send_channel_loss_supplier_func( &mut self, endpoint: *mut aeron_send_channel_endpoint_stct, )

impl AeronStrToPtrHashMapForEachFuncCallback for NoHandler

fn handle_aeron_str_to_ptr_hash_map_for_each_func( &mut self, key: &str, value: *mut c_void, )

impl AeronTermGapScannerGapDetectedFuncCallback for NoHandler

fn handle_aeron_term_gap_scanner_on_gap_detected_func( &mut self, term_id: i32, term_offset: i32, length: usize, )

impl AeronUnavailableCounterCallback for NoHandler

fn handle_aeron_on_unavailable_counter( &mut self, counters_reader: AeronCountersReader, registration_id: i64, counter_id: i32, )

impl AeronUnavailableImageCallback for NoHandler

fn handle_aeron_on_unavailable_image( &mut self, subscription: AeronSubscription, image: AeronImage, )

impl AeronUriHostnameResolverFuncCallback for NoHandler

fn handle_aeron_uri_hostname_resolver_func( &mut self, host: &str, hints: Addrinfo, info: *mut *mut addrinfo, ) -> c_int

impl AeronUriParseCallbackCallback for NoHandler

fn handle_aeron_uri_parse_callback(&mut self, key: &str, value: &str) -> c_int