Add a timeout to preview generator.

It looks like i have a file, or other users (it's a txt file), where preview generator hangs forever.

Is it possible to add a simple timeout, so that previewgenerator doesn't hang forever to wait for the file?
Im using Previewgenerator in the Combination with Imaginary, but it seems that previewgenerator hangs itself, not imaginary.

generate-all hangs forever after this line:
Generating previews for /joerg.mustermann/files/test/audi Q3 code.txt

I would assume that particular file is fine, since that would still send it to imaginary, but according to "LSOF" the file it hangs on uses ImageMagick locally to generate an preview image. I just cant tell which file is the problematic one, since lsof doesnt show a particular file.

So in short, a simple Configurable timeout, like 10 Seconds, should solve the issue with broken files where preview-generator hangs on.

Cheers

Start by tracing the generate-all path that processes previews for the reported text file, including the ImageMagick and Imaginary generation paths. Identify where a configurable timeout can govern preview generation and verify the behavior with a file that hangs. Done means a timeout stops the stuck operation and generate-all can continue.