Sometimes not all child processes are ended by conrun-kill

[dlech]

However, when I exit the program using the VSCode red-square stop button, the daemon process lives on -- when I press the Touch Sensor, the Motor continues to run -- even after VSCode shows: "Program ended by stop button. Completed successfully." I have to reboot the EV3 Brick to kill that process.

The fact that the subprocess is not being killed could be a bug in brickrun/console-runner.

Originally posted by @dlech in ev3dev/vscode-ev3dev-browser#103 (comment)

[dlech]

Test case:

#!/usr/bin/env python3


from ev3dev2.motor import MediumMotor, OUTPUT_A
from ev3dev2.sensor import INPUT_1
from ev3dev2.sensor.lego import TouchSensor

from multiprocessing import Process


TOUCH_SENSOR = TouchSensor(address=INPUT_1)
MOTOR = MediumMotor(address=OUTPUT_A)


def motor_on_when_touched():
    while True:
        if TOUCH_SENSOR.is_pressed:
            MOTOR.on_for_seconds(
                speed=100,
                seconds=1,
                brake=False,
                block=True)


Process(target=motor_on_when_touched,
        daemon=True).start()
# *** process still alive after program ended through VSCode ***


while True:
    pass

• Run this program using the ev3dev VS Code extension.
• Stop the program using the ev3dev VS Code extension.
• Subprocess is still running

[dlech]

This is a VS Code extension bug after all.