sdi_toolBox::desktop::eventBus Namespace Reference

Lightweight thread-safe event bus for decoupled message passing. More...

Classes
class	Bus
	Central message dispatcher for the event bus system. More...
class	INode
	Abstract interface representing a subscriber node in the event bus system. More...
class	Message
	Base class for all messages dispatched through the event bus. More...
class	Node
	Concrete subscriber node in the event bus system. More...

Typedefs
using	MessageTypeID = uint64_t
	Unique identifier for a message type.
using	TimePoint = std::chrono::steady_clock::time_point
	Monotonic timestamp type used throughout the event bus.

Detailed Description

Lightweight thread-safe event bus for decoupled message passing.

The eventBus namespace provides a publish/subscribe messaging system that allows decoupled communication between components. It is built around three core concepts:

• Bus : the central dispatcher that maintains a routing table and delivers messages to the appropriate subscribers.
• Node : a subscriber attached to a Bus that can send and receive messages through its internal FIFO queue.
• Message : the base class for all messages circulating in the bus, identified by a unique MessageTypeID.

Nodes can subscribe to specific message types or to broadcast mode. All operations are thread-safe.

See also

Bus

Node

Message

Typedef Documentation

MessageTypeID

using MessageTypeID = uint64_t

Unique identifier for a message type.

Definition at line 21 of file defs.h.

TimePoint

using TimePoint = std::chrono::steady_clock::time_point

Monotonic timestamp type used throughout the event bus.

Definition at line 22 of file defs.h.