Manage session tasks

Each function called by the action is running in allocated thread and wrapped as session task. Each running tasks is identified as context OID plus function name. There is simple method to stop long running task by name: kill_task(). To stop all running tasks within a context use kill_all_tasks().

Example:

<button on:click="long_job">Start long task</button>
<button on:click="stop">Stop task</button>
<div ref:progress/>
<python>
import time

def long_job(node):
    refs["progress"].set_text("In progress...")
    session.send_shot()
    time.sleep(30)
    refs["progress"].set_text("Done")

def on_kill():
    refs["progress"].set_text("Stopped")
long_job.on_kill = on_kill

def stop(node):
    ctx.kill_task(long_job)
</python>