#include <DataSampleHeader.h>
Collaboration diagram for OpenDDS::DCPS::DataSampleHeader:
Public Member Functions | |
| DataSampleHeader () | |
| Default constructor. | |
| DataSampleHeader (ACE_Message_Block *buffer) | |
| Construct with values extracted from a buffer. | |
| DataSampleHeader (ACE_Message_Block &buffer) | |
| DataSampleHeader & | operator= (ACE_Message_Block *buffer) |
| Assignment from an ACE_Message_Block. | |
| DataSampleHeader & | operator= (ACE_Message_Block &buffer) |
| size_t | marshaled_size () |
| Amount of data read when initializing from a buffer. | |
| size_t | max_marshaled_size () |
| Similar to IDL compiler generated methods. | |
Public Attributes | |
| char | message_id_ |
| The enum MessageId. | |
| bool | last_sample_: 1 |
| bool | byte_order_: 1 |
| bool | reserved_1: 1 |
| reservered bits | |
| bool | reserved_2: 1 |
| bool | reserved_3: 1 |
| bool | reserved_4: 1 |
| bool | reserved_5: 1 |
| bool | reserved_6: 1 |
| ACE_UINT32 | message_length_ |
| ACE_INT16 | sequence_ |
| ACE_INT32 | source_timestamp_sec_ |
| ACE_UINT32 | source_timestamp_nanosec_ |
| ACE_UINT16 | coherency_group_ |
| PublicationId | publication_id_ |
Private Member Functions | |
| void | init (ACE_Message_Block *buffer) |
| Implement load from buffer. | |
Private Attributes | |
| size_t | marshaled_size_ |
| Keep track of the amount of data read from a buffer. | |
| ACE_INLINE OpenDDS::DCPS::DataSampleHeader::DataSampleHeader | ( | ) |
| ACE_INLINE OpenDDS::DCPS::DataSampleHeader::DataSampleHeader | ( | ACE_Message_Block * | buffer | ) |
Construct with values extracted from a buffer.
| ACE_INLINE OpenDDS::DCPS::DataSampleHeader::DataSampleHeader | ( | ACE_Message_Block & | buffer | ) |
| void OpenDDS::DCPS::DataSampleHeader::init | ( | ACE_Message_Block * | buffer | ) | [private] |
Implement load from buffer.
| ACE_INLINE size_t OpenDDS::DCPS::DataSampleHeader::marshaled_size | ( | ) |
Amount of data read when initializing from a buffer.
| ACE_INLINE size_t OpenDDS::DCPS::DataSampleHeader::max_marshaled_size | ( | ) |
Similar to IDL compiler generated methods.
| ACE_INLINE OpenDDS::DCPS::DataSampleHeader & OpenDDS::DCPS::DataSampleHeader::operator= | ( | ACE_Message_Block & | buffer | ) |
| ACE_INLINE OpenDDS::DCPS::DataSampleHeader & OpenDDS::DCPS::DataSampleHeader::operator= | ( | ACE_Message_Block * | buffer | ) |
Assignment from an ACE_Message_Block.
0 - Message encoded using little-endian byte order. 1 - Message encoded using network byte order.
The COHERENCY_GROUP field is obtained from the Publisher as well, in order to support the same scope as the SEQUENCE field. The special value of 0 indicates that the sample is not participating in a coherency group.
The flag indicates the last sample of a group of coherent changes.
size_t OpenDDS::DCPS::DataSampleHeader::marshaled_size_ [private] |
Keep track of the amount of data read from a buffer.
The enum MessageId.
Identify the DataWriter that produced the sample data being sent.
reservered bits
The sequence number is obtained from the Publisher associated with the DataWriter based on the PRESENTATION requirement for the sequence value (access_scope == GROUP).
The SOURCE_TIMESTAMP field is generated from the DataWriter or supplied by the application at the time of the write. This value is derived from the local hosts system clock, which is assumed to be synchronized with the clocks on other hosts within the domain. This field is required for DESTINATION_ORDER and LIFESPAN policy behaviors of subscriptions. It is also required to be present for all data in the SampleInfo structure supplied along with each data sample.
1.4.7