any way to graceful exit tornado application?

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
30/100
Issue type
Feature
Clarity
Needs clarification
Activity status
Stale
Tech stack
python
Domain
backend, networking

Research direction

Begin with the IOLoop, _callbacks, and _timeouts references in the report, then trace Tornado's application and HTTP-server shutdown entry points. Check existing tests or documentation for shutdown behavior; done should establish a supported graceful-exit path or clearly document whether these private attributes are safe to use.

Written by the indexing model from the issue text.

Description

docs

there are many gist show how to graceful exit tornado application like this:

stop_httpserver(http_server)
def try_stop_ioloop():
    io_loop = IOLoop.instance()
    if io_loop._callbacks or io_loop._timeouts:
        io_loop.add_timeout(time.time()+1, try_stop_ioloop)
    else:
        io_loop.stop()

try_stop_ioloop()

it's safy to test io_loop._timeouts or _callbacks ? or _timeouts can be ignored?

Dominant language
Python
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