Unable to KeyboardInterrupt when ImageAcquirer exists

[zamzz]

Describe the Issue Keyboard Interrupt / Ctrl+C isn't being caught/acknowledged when an ImageAcquirer is in existence. Interesting that quit() instead of Ctrl+C works for me.

Sample Code I can show a piece of code that demonstrates the reported phenomenon:

• [x] Yes
• [ ] No

If yes, please provide a sample code:

Stops on KeyboardInterrupt once "waiting!" starts printing:

import time
from harvesters.core import Harvester

if __name__ == "__main__":
    h = Harvester()
    h.add_file("")  # insert producer path here
    h.update()

#    with h.create() as ia:
#        pass

    while True:
        print("waiting!")
        time.sleep(1)

Doesn't stop on KeyboardInterrupt once "waiting!" starts printing:

import time
from harvesters.core import Harvester

if __name__ == "__main__":
    h = Harvester()
    h.add_file("")  # insert producer path here
    h.update()

    with h.create() as ia:
        pass

    while True:
        print("waiting!")
        time.sleep(1)

Expected Behavior

Configuration

• OS: Ubuntu 22.04
• Python: 3.8
• Harvester: 1.4.3

Reproducibility

This phenomenon can be stably reproduced:

• [x] Yes
• [ ] No.

If applicable, please provide your observation about the reproducibility. I'm unsure if this happens with other cameras (or producers to be honest).

Actions You Have Taken

• [x] I've read the Harvester FAQ page.
• [x] I've found this issue that seems quite similar

[KABILAN235]

I've got the same problem too and haven't found a solution yet