How to handle deleted files while audio thread is using the file

Audio Plugins
1

Should I just put a timer in the background thread checking exists every second or so?

Memory Mapped Audio File btw or else I don’t think this is an issue anywhere else

2

I don’t think this is usually an issue. On macOS / Linux, as long as you keep a handle to file, the doesn’t get deleted until the handle is closed. On windows, you can’t delete an open file.

3

Oh okay interesting was thinking the user moves the file to the trash bin on accident while the plugin is using it.

4

You should immediately stop the playback then delete/move the file.
A lock could be necessary, or you could just lock the entire audio processing:

SuspendAudioProcessor(true);

// do the file operations...

SuspendAudioProcessor(false);