33a34,48
> from datetime import datetime
> 
> class Clock():
>     def __init__(self, label, callback_type, thread_id):
>         self.start = datetime.now()
>         self.label = label
>         self.thread_id = thread_id
>         self.callback_type = callback_type
> 
>     def stop(self):
>         end = datetime.now()
>         total = (end - self.start).total_seconds()
>         if total > 0.1:
>             print('{:.4f} {}: function {} in thread {}'.format(total, self.callback_type, self.label, self.thread_id))
> 
195c210,223
< 
---
> import threading
> import inspect
> def identifyItem(i):
>     if i is None:
>         return "(None)"
>     else:
>         if inspect.isbuiltin(i):
>             return str(i)
>         else:
>             if 'gotResult' == i.__name__:
>                 return False
>             f = inspect.getsourcefile(i)
>             ln = inspect.getsourcelines(i)[1]
>             return "%s (%s:%d)" % (i.__name__, f, ln)
588c616,626
<                         current.result = callback(current.result, *args, **kw)
---
>                         currentItem = identifyItem(callback)
>                         currentThreadId = threading.current_thread().ident
> 
>                         if currentItem:
>                             clock = Clock(currentItem, 'callback', currentThreadId)
>                         try:
>                             current.result = callback(current.result, *args, **kw)
>                         finally:
>                             if currentItem:
>                                 clock.stop()
>                             
1127a1166,1168
>                 currentThreadId = threading.current_thread().ident
>                 label = "%s (%s:%d)" % (g.__name__, g.gi_code.co_filename, g.gi_code.co_firstlineno)
>                 c = Clock(label, 'inlineCallback', currentThreadId)
1128a1170
>                 c.stop()
1133a1176
>             c.stop()