error_handling

Error Handling in uTensor

In this tutorial, we will learn how to catch and handle errors/events in uTensor.

We will implement our own handler, MyEventHandler, which will spin-wait on errors/events of specific type. You can find its implementation in error_handle.cpp.

Basics of an Event Handler in uTensor

To implement a handler, you must:

1. inherit ErrorHandler, which is declared in errorHandler.hpp
2. (optional) override uThrow method, which will be invoked whenever an error has been thrown with Context::throwError
3. (optional) override notify method, which will be invoked whenever an event has been notified with Context::notifyEvent

Running Example with Debuggers

Running with lldb

Running following commands in lldb console:

(lldb) file tutorials/error_handling/error_handle
(lldb) b main
(lldb) run

You should see:

Enter c to continue running:

The process spins because of an infinite loop in our handler. You can press ctrl+C to stop the process and you will see:

At this point, you can do debugging in your program using commands such as bt for back tracing, up to go to upper function frame, f for printing current frame, ...etc