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 DDSDataReader. The sample state can be either:

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

DDS_NOT_READ_SAMPLE_STATE indicates that the DDSDataReader 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