DDS::FlowController Class Reference

<<interface>> A flow controller is the object responsible for shaping the network traffic by determining when attached asynchronous DDS::DataWriter instances are allowed to write data. More...

#include <managed_flowcontroller.h>

Public Member Functions
void	set_property (FlowControllerProperty_t^ prop)
	Sets the DDS::FlowController property.
void	get_property (FlowControllerProperty_t^ prop)
	Gets the DDS::FlowController property.
void	trigger_flow ()
	Provides an external trigger to the DDS::FlowController.
System::String^	get_name ()
	Returns the name of the DDS::FlowController.
DomainParticipant^	get_participant ()
	Returns the DDS::DomainParticipant to which the DDS::FlowController belongs.

Properties
static System::String^	DEFAULT_FLOW_CONTROLLER_NAME [get]
	[default] Special value of DDS::PublishModeQosPolicy::flow_controller_name that refers to the built-in default flow controller.
static System::String^	FIXED_RATE_FLOW_CONTROLLER_NAME [get]
	Special value of DDS::PublishModeQosPolicy::flow_controller_name that refers to the built-in fixed-rate flow controller.
static System::String^	ON_DEMAND_FLOW_CONTROLLER_NAME [get]
	Special value of DDS::PublishModeQosPolicy::flow_controller_name that refers to the built-in on-demand flow controller.

Detailed Description

<<interface>> A flow controller is the object responsible for shaping the network traffic by determining when attached asynchronous DDS::DataWriter instances are allowed to write data.

QoS:

DDS::FlowControllerProperty_t

Member Function Documentation

void DDS::FlowController::set_property

(

FlowControllerProperty_t^

prop

)

Sets the DDS::FlowController property.

This operation modifies the property of the DDS::FlowController.

Once a DDS::FlowController has been instantiated, only the DDS::FlowControllerProperty_t::token_bucket can be changed. The DDS::FlowControllerProperty_t::scheduling_policy is immutable.

A new DDS::FlowControllerTokenBucketProperty_t::period only takes effect at the next scheduled token distribution time (as determined by its previous value).

Parameters

prop

<<in>> The new DDS::FlowControllerProperty_t. Property must be consistent. Immutable fields cannot be changed after DDS::FlowController has been created. The special value ::DDS::FLOW_CONTROLLER_PROPERTY_DEFAULT can be used to indicate that the property of the DDS::FlowController should be changed to match the current default DDS::FlowControllerProperty_t set in the DDS::DomainParticipant. Cannot be NULL.

Exceptions

One	of the Standard Return Codes, DDS::Retcode_ImmutablePolicy, or DDS::Retcode_InconsistentPolicy.

See Also

DDS::FlowControllerProperty_t for rules on consistency among property values.

void DDS::FlowController::get_property

(

FlowControllerProperty_t^

prop

)

Gets the DDS::FlowController property.

Parameters

prop	<<in>> DDS::FlowController to be filled in. Cannot be NULL.

Exceptions

One	of the Standard Return Codes

void DDS::FlowController::trigger_flow

(

)

Provides an external trigger to the DDS::FlowController.

Typically, a DDS::FlowController uses an internal trigger to periodically replenish its tokens. The period by which this trigger is called is determined by the DDS::FlowControllerTokenBucketProperty_t::period property setting.

This function provides an additional, external trigger to the DDS::FlowController. This trigger adds DDS::FlowControllerTokenBucketProperty_t::tokens_added_per_period tokens each time it is called (subject to the other property settings of the DDS::FlowController).

An on-demand DDS::FlowController can be created with a DDS::Duration_t::DURATION_INFINITE as DDS::FlowControllerTokenBucketProperty_t::period, in which case the only trigger source is external (i.e. the FlowController is solely triggered by the user on demand).

DDS::FlowController::trigger_flow can be called on both strict on-demand FlowController and hybrid FlowController (internally and externally triggered).

Exceptions

One	of the Standard Return Codes

System::String ^ DDS::FlowController::get_name

(

)

Returns the name of the DDS::FlowController.

Returns

The name of the DDS::FlowController.

DomainParticipant ^ DDS::FlowController::get_participant

(

)

Returns the DDS::DomainParticipant to which the DDS::FlowController belongs.

Returns

The DDS::DomainParticipant to which the DDS::FlowController belongs.