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Topic: threaded process (Read 2542 times) previous topic - next topic
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threaded process

I'm unable to start a threaded process in the execute() function of a mainmenu_commands object.

Getting this: unhandled exeption: This method can be called only from the main thread

What I basically want to do is generate a playlist and this is initiated from the main menu. Because it can take a little time I would like to do this in the background.
What is the correct way to do this, or is this not possible?
 

threaded process

Reply #1 –
The correct way to use threaded_process is as follows:
  • Set up your data in threaded_process_callback::on_init(). This runs in the main thread, so you can grab data from the playlist_manager, for example.
  • Perform some (potentially) lengthy computation in threaded_process_callback::run(). This runs in a background thread.
  • Clean up and output data in threaded_process_callback::on_done(). This runs in the main thread again, so outputting data can mean to create a playlist.