DURABILITY

<<spec>> This QoS policy specifies whether or not RTI Connext will store and deliver previously published data samples to new dds::sub::DataReader entities that join the network later. More...

Classes
struct	dds::core::policy::DurabilityKind_def
	The definition of the dds::core::safe_enum DurabilityKind. More...
class	dds::core::policy::Durability
	Specifies whether a dds::pub::DataWriter will store and deliver previously published data samples to late-joining dds::sub::DataReader entities. More...
class	rti::core::PersistentStorageSettings
	<<extension>> Configures the persistent storage settings for durable writer history and durable reader state. More...

Typedefs
typedef dds::core::safe_enum< DurabilityKind_def >	dds::core::policy::DurabilityKind
	Safe Enumeration of DurabilityKind_def More...

Enumerations
enum class	rti::core::policy::PersistentJournalKind {   PersistentJournalKind::delete_journal = DDS_DELETE_PERSISTENT_JOURNAL ,   PersistentJournalKind::truncate_journal = DDS_TRUNCATE_PERSISTENT_JOURNAL ,   PersistentJournalKind::persist_journal = DDS_PERSIST_PERSISTENT_JOURNAL ,   PersistentJournalKind::memory_journal = DDS_MEMORY_PERSISTENT_JOURNAL ,   PersistentJournalKind::wal_journal = DDS_WAL_PERSISTENT_JOURNAL ,   PersistentJournalKind::off = DDS_OFF_PERSISTENT_JOURNAL }
	<<extension>> The enumeration for the journal kind of the persistent storage for durable writer history and durable reader state. More...
enum class	rti::core::policy::PersistentSynchronizationKind {   PersistentSynchronizationKind::normal = DDS_NORMAL_PERSISTENT_SYNCHRONIZATION ,   PersistentSynchronizationKind::full = DDS_FULL_PERSISTENT_SYNCHRONIZATION ,   PersistentSynchronizationKind::off = DDS_OFF_PERSISTENT_SYNCHRONIZATION }
	<<extension>> The enumeration for the synchronization kind of the persistent storage for durable writer history and durable reader state. More...

Functions
int32_t	rti::core::policy::auto_writer_depth ()
	<<extension>> The default value for dds::core::policy::Durability::writer_depth More...

Detailed Description

<<spec>> This QoS policy specifies whether or not RTI Connext will store and deliver previously published data samples to new dds::sub::DataReader entities that join the network later.

Typedef Documentation

DurabilityKind

typedef dds::core::safe_enum<DurabilityKind_def> dds::core::policy::DurabilityKind

Safe Enumeration of DurabilityKind_def

See also

DurabilityKind_def

Enumeration Type Documentation

PersistentJournalKind

enum class rti::core::policy::PersistentJournalKind

strong

<<extension>> The enumeration for the journal kind of the persistent storage for durable writer history and durable reader state.

Enumerator
delete_journal	Deletes the rollback journal at the conclusion of each transaction.
truncate_journal	Commits transactions by truncating the rollback journal to zero-length instead of deleting it.
persist_journal	Prevents the rollback journal from being deleted at the end of each transaction. Instead, the header of the journal is overwritten with zeros.
memory_journal	Stores the rollback journal in volatile RAM. This saves disk I/O.
wal_journal	Uses a write-ahead log instead of a rollback journal to implement transactions.
off	Disables the rollback journal.

PersistentSynchronizationKind

enum class rti::core::policy::PersistentSynchronizationKind

strong

<<extension>> The enumeration for the synchronization kind of the persistent storage for durable writer history and durable reader state.

Enumerator
normal	Data (e.g., new sample) is written to disk at critical moments.
full	Data (e.g., new sample) is written to physical disk immediately.
off	No synchronization is enforced.

Function Documentation

auto_writer_depth()

int32_t rti::core::policy::auto_writer_depth ( )

inline

<<extension>> The default value for dds::core::policy::Durability::writer_depth

Note

This is a standalone function in the namespace rti::core::policy

This values resolves to the following:

• dds::core::policy::History::depth if the history kind is dds::core::policy::HistoryKind::KEEP_LAST.
• dds::core::policy::ResourceLimits::max_samples_per_instance in the dds::core::policy::ResourceLimits if the history kind is dds::core::policy::HistoryKind::KEEP_ALL.

Referenced by rti::core::policy::DomainParticipantResourceLimits::local_writer_allocation().