Uvloop missing debug slow callback information.

[InvaderGir1]

• uvloop version: 0.8.0
• Python version: 3.6.0
• Platform: OS-X Sierra 10.12.6
• Can you reproduce the bug with PYTHONASYNCIODEBUG in env?: Yes

Hi, I wrote a project using uvloop, and I wanted to start profiling to see what methods take long. From what I am aware of cProfile, etc.. don't support asyncio very well (maybe I am wrong?, is there something advised for profiling asyncio code?)

I noticed in the documentation of python that by doing set_debug and reducing slow_callback_duration I can see what methods are taking long. But when using uvloop, I don't get all the information. I saw it was discussed in python/asyncio#105 and fixed. (Probably in the basic loop, it was fixed.)

Code Example:

import uvloop
import asyncio
loop = uvloop.new_event_loop()
asyncio.set_event_loop(loop)
loop = asyncio.get_event_loop()
loop.set_debug(True)
loop.slow_callback_duration = 0.01
loop.run_until_complete(slow_func())
loop.close()

if I use uvloop as my event loop I get this message:
Executing <Handle <TaskSendMethWrapper object at 0x1060e7860> created at /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/asyncio/tasks.py:512> took 0.205 seconds

If I comment out the uvloop and use the standard loop I get:
Executing <Task finished coro=<slow_func() done, defined at Launcher.py:13> result=None created at /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/asyncio/base_events.py:446> took 0.206 seconds

This helps pinpoint what function is doing the problem.
Thanks,
And sorry for the long description.

[1st1]

Fixed in master. Will be in the next release (soon)

[1st1]

Please try uvloop v0.9.0.