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RTI Connext Modern C++ API Version 7.2.0
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<<extension>> rti::pub::FlowController and associated elements More...
Classes | |
| struct | rti::pub::FlowControllerSchedulingPolicy_def |
| <<extension>> Kinds of flow controller shceduling policy More... | |
| class | rti::pub::FlowControllerTokenBucketProperty |
| <<extension>> <<value-type>> Configures a FlowController based on a tocken-bucket mechanism More... | |
| class | rti::pub::FlowControllerProperty |
| <<extension>> <<value-type>> Configures a FlowController More... | |
| class | rti::pub::FlowController |
| <<extension>> <<reference-type>> A flow controller is the object responsible for shaping the network traffic by determining when attached asynchronous dds::pub::DataWriter instances are allowed to write data. More... | |
Typedefs | |
| typedef dds::core::safe_enum< FlowControllerSchedulingPolicy_def > | rti::pub::FlowControllerSchedulingPolicy |
| <<extension>> The safe enumeration for FlowControllerSchedulingPolicy_def::type More... | |
Variables | |
| static OMG_DDS_API_CLASS_VARIABLE const std::string | rti::pub::FlowController::DEFAULT_NAME |
| Name that identifies the built-in default FlowController. More... | |
| static OMG_DDS_API_CLASS_VARIABLE const std::string | rti::pub::FlowController::FIXED_RATE_NAME |
| Name that identifies the built-in fixed-rate FlowController. More... | |
| static OMG_DDS_API_CLASS_VARIABLE const std::string | rti::pub::FlowController::ON_DEMAND_NAME |
| Name that identifies the built-in on-demand FlowController. More... | |
<<extension>> rti::pub::FlowController and associated elements
rti::pub::FlowController provides the network traffic shaping capability to asynchronous dds::pub::DataWriter instances. For use cases and advantages of publishing asnychronously, please refer to rti::core::policy::PublishMode of dds::pub::qos::DataWriterQos.
| typedef dds::core::safe_enum<FlowControllerSchedulingPolicy_def> rti::pub::FlowControllerSchedulingPolicy |
<<extension>> The safe enumeration for FlowControllerSchedulingPolicy_def::type
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static |
Name that identifies the built-in default FlowController.
RTI Connext provides several built-in rti::pub::FlowController for use with an asynchronous dds::pub::DataWriter. The user can choose to use the built-in flow controllers and optionally modify their properties or can create a custom flow controller.
By default, flow control is disabled. That is, the built-in rti::pub::FlowController::DEFAULT_NAME flow controller does not apply any flow control. Instead, it allows data to be sent asynchronously as soon as it is written by the dds::pub::DataWriter.
Essentially, this is equivalent to a user-created rti::pub::FlowController with the following rti::pub::FlowControllerProperty settings:
tokens_added_per_period = dds::core::LENGTH_UNLIMITED tokens_leaked_per_period = 0 period = 60 seconds bytes_per_token = dds::core::LENGTH_UNLIMITED
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static |
Name that identifies the built-in fixed-rate FlowController.
RTI Connext provides several builtin rti::pub::FlowController for use with an asynchronous dds::pub::DataWriter. The user can choose to use the built-in flow controllers and optionally modify their properties or can create a custom flow controller.
The built-in rti::pub::FlowController::FIXED_RATE_NAME flow controller shapes the network traffic by allowing data to be sent only once every second. Any accumulated samples destined for the same destination are coalesced into as few network packets as possible.
Essentially, this is equivalent to a user-created rti::pub::FlowController with the following rti::pub::FlowControllerProperty settings:
tokens_added_per_period = dds::core::LENGTH_UNLIMITED tokens_leaked_per_period = dds::core::LENGTH_UNLIMITED period = 1 second bytes_per_token = dds::core::LENGTH_UNLIMITED
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static |
Name that identifies the built-in on-demand FlowController.
RTI Connext provides several builtin rti::pub::FlowController for use with an asynchronous dds::pub::DataWriter. The user can choose to use the built-in flow controllers and optionally modify their properties or can create a custom flow controller.
The built-in rti::pub::FlowController::ON_DEMAND_NAME allows data to be sent only when the user calls rti::pub::FlowController::trigger_flow. With each trigger, all accumulated data since the previous trigger is sent (across all dds::pub::Publisher or dds::pub::DataWriter instances). In other words, the network traffic shape is fully controlled by the user. Any accumulated samples destined for the same destination are coalesced into as few network packets as possible.
This external trigger source is ideal for users who want to implement some form of closed-loop flow control or who want to only put data on the wire every so many samples (e.g. with the number of samples based on NDDS_Transport_Property_t::gather_send_buffer_count_max).
Essentially, this is equivalent to a user-created rti::pub::FlowController with the following rti::pub::FlowControllerProperty settings:
tokens_added_per_period = dds::core::LENGTH_UNLIMITED tokens_leaked_per_period = dds::core::LENGTH_UNLIMITED bytes_per_token = dds::core::LENGTH_UNLIMITED