Home
Quickstart Guide
Introduction RIO Academic RIO Application examples Your first RT app Your first FPGA app
Real-Time
Basic procedures System admin File system I/O monitor System controller architecture Timed loops Inter-process communication RT/Host communication RT/FPGA communication FPGA personalities Interrupts Datalogger (file I/O)
FPGA
Design flow Simulation Inter-process communication RT/host communication Derived clock domain IP blocks FPGA personality
Networking
Get connected Email Web services UDP TCP IP addresses
Site Map
Guides Code examples Procedures Tags LabVIEW block diagram elements Targets Communications All pages
Glossary How to use About
RIO Developer Essentials Guide for Academia

"Queued message handler" tag

Elements entering and leaving a queue

RT programming: Queue-based state machines
RT guide PC guide

Queue-based state machines excel at implementing system control, data measurement and processing, and other tasks to respond to inputs from the surrounding physical system and user interface. Learn about three popular design patterns: queued state machine (QSM), queued message handler (QMH), and event-driven producer-consumer loops.

LabVIEW RT block diagram snippet: System Manager and Code Validator message-handling loops

Queued message handler with multiple process loops
RT code

The queued message handler contains multiple process loops operating independently and in parallel that communicate with each other by sending messages through queues. Each process is a well-defined task implemented by the "Queued State Machine" design pattern. Breaking up the system into self-contained tasks greatly simplifies the design of complex systems.