Typedefs
typedef DDS_UnsignedLong	DDS_SampleStateMask
	A bit-mask (list) of sample states, i.e. DDS_SampleStateKind. More...

Enumerations
enum	DDS_SampleStateKind { DDS_READ_SAMPLE_STATE = 0x0001 << 0, DDS_NOT_READ_SAMPLE_STATE = 0x0001 << 1 }
	Indicates whether or not a sample has ever been read. More...

Variables
const DDS_SampleStateMask	DDS_ANY_SAMPLE_STATE
	Any sample state DDS_READ_SAMPLE_STATE \| DDS_NOT_READ_SAMPLE_STATE. More...

Detailed Description

DDS_SampleStateKind and associated elements

Typedef Documentation

A bit-mask (list) of sample states, i.e. DDS_SampleStateKind.

Indicates whether or not a sample has ever been read.

For each sample received, the middleware internally maintains a sample_state relative to each DDS_DataReader. The sample state can be either:

DDS_READ_SAMPLE_STATE indicates that the DDS_DataReader has already accessed that sample by means of a read or take operation.

DDS_NOT_READ_SAMPLE_STATE indicates that the DDS_DataReader has not accessed that sample before.

The sample state will, in general, be different for each sample in the collection returned by read or take.

Enumerator
DDS_READ_SAMPLE_STATE	Sample has been read.
DDS_NOT_READ_SAMPLE_STATE	Sample has not been read.

const DDS_SampleStateMask DDS_ANY_SAMPLE_STATE