lintel::PropertyChange Struct Reference

#include <PropertyChange.h>

Public Member Functions
std::string	identifier () const

Static Public Member Functions
static PropertyChange	of (PropertyBase &property)

Public Attributes
char	processName [PART_SIZE] {}
char	className [PART_SIZE] {}
char	instanceName [PART_SIZE] {}
char	name [PART_SIZE] {}
char	value [VALUE_SIZE] {}
bool	m_valueTruncated = false

Static Public Attributes
static constexpr std::size_t	PART_SIZE = 32
static constexpr std::size_t	VALUE_SIZE = Event::CONTENT_SIZE - 4 * PART_SIZE - 1
static constexpr std::size_t	MAX_VALUE_LENGTH = VALUE_SIZE - 1

Detailed Description

Fixed-size change notification for a property, exchanged over the EventBus.

Carries the property coordinates and the new value as a string. The struct is trivially copyable and fits into the Event payload, so it can be stored inside the lock-free queues of the bus.

Values longer than the value buffer are marked as truncated (m_valueTruncated). The receiving side must then resolve the full value from a locked source (e.g. the shared memory repository) instead of using the truncated string; a truncated change is never applied with a wrong value.

Member Function Documentation

identifier()

std::string lintel::PropertyChange::identifier ( ) const

inline

Returns

the unique identifier name_instanceName_className_processName

of()

static PropertyChange lintel::PropertyChange::of ( PropertyBase &  property )

inlinestatic

Create a change notification from a property.

Parameters

property

the property that was changed

Returns

the change notification carrying the new value

Member Data Documentation

className

char lintel::PropertyChange::className[PART_SIZE] {}

instanceName

char lintel::PropertyChange::instanceName[PART_SIZE] {}

m_valueTruncated

bool lintel::PropertyChange::m_valueTruncated = false

True if the value did not fit into the buffer and was truncated.

MAX_VALUE_LENGTH

constexpr std::size_t lintel::PropertyChange::MAX_VALUE_LENGTH = VALUE_SIZE - 1

staticconstexpr

Maximum length of the value that fits into the buffer.

name

char lintel::PropertyChange::name[PART_SIZE] {}

PART_SIZE

constexpr std::size_t lintel::PropertyChange::PART_SIZE = 32

staticconstexpr

Buffer size for each identifier part.

processName

char lintel::PropertyChange::processName[PART_SIZE] {}

value

char lintel::PropertyChange::value[VALUE_SIZE] {}

VALUE_SIZE

constexpr std::size_t lintel::PropertyChange::VALUE_SIZE = Event::CONTENT_SIZE - 4 * PART_SIZE - 1

staticconstexpr

Buffer size for the serialized value string (including terminator).

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The documentation for this struct was generated from the following file:

• src/include/lintel/features/property/events/PropertyChange.h