System Core

The System Core is the controller for the entire framework — it starts and stops individual modules, monitors their operation, and establishes the communication channels (enqueuers) that let modules talk to each other.

Root Actor

Documentation in progress — root actor explonation required.

Launching Modules

When the framework starts up, the System Core collects all modules registered in the Main VI, plus the required System modules. It stores them in separate class variables, registers them in the System Core global variable, and then launches them.

Monitoring Module Status

During operation, the System Core polls every module every 5 seconds and publishes the aggregated status of the entire framework. The possible states are:

Initializing STATE

At least one module is still in the initialization phase

Running STATE

At least one module is currently running

Stopped STATE

All modules have stopped — the framework is idle

Error STATE

At least one module has encountered an error

Unresponsive STATE

The System Core cannot reach at least one module

Inter-Module Communication

The System Core manages the enqueuers required for modules to send messages to one another. When one module needs to send a message to another, it queries the System Core for the target module’s message queue, then routes the message through that enqueuer.

This design keeps the modules loosely coupled — they only need to know each other’s names, not their internal queue references.

System Shutdown

When the program shuts down, the System Core orchestrates a graceful shutdown in two phases:

Phase 1 — Pre-Shutdown CLEANUP

System Core broadcasts Process preShutdown Msg to every module. Modules that override Process preShutdown.vi execute their module-specific cleanup — closing references, flushing buffers, releasing resources

Phase 2 — Module Termination EXIT

Once all pre-shutdown handlers complete, the individual modules are terminated and the framework exits cleanly

Interface Messages

Documentation in progress — interface message list to be added.