[harryberlin]

Hello

By disabling my addon from addon information dialog, i get this error on kodi.log:

Code:

the python script "/home/osmc/.kodi/addons/plugin.script.ibuscommunicator/service.py" has left several classes in memory that we couldn't clean up. The classes include: N14PythonBindings36XBMCAddon_xbmcgui_WindowXML_DirectorE

after enabling the addon again and opening the same window, it gets a new ID.
on leaving the window closes normally with close()

in addon shutdown i added an extra close() event. so kodi.log tells me, the window -10000 could not be located.
doModal() or show(), close() has no difference for result.

System: Rasp with OSMC

Is there a way to solve the problem?
How to find out what process let hold the window?

[Roman_V_M]

Nothing holds your window. My guess is that for some reason SWIG wrappers incorrectly count references for instances of some wrapped C++ classes, thus preventing Python's Garbage Collector from cleaning them. The simplest solution is to apply del operator to the problematic instances at the end of your script.

[harryberlin]

i did a lot of tests.
del has no effect to release the window from kodi.

[User 342716]

I had a simular issue when I was assigning an import to a variable. I added a variable = None before the window closes and the errors went away. For example mine was player = xxx.Player() or something similar where Player was imported from another library.

[harryberlin]

further the same error. it drives me crazy...

[Roman_V_M]

Again, what do you mean by "release the window"? Most probably, it's incorrect reference counting issue for wrapped C++ classes.

Try to log sys.getrefcount for your problematic class instances at the end of your script to see how much references are left to your object. Ideally, it should be 2: 1 in the script main scope and 1 passed to sys.getrefcount itself. >2 will mean that there's strong chance that your object won't be cleaned.

BTW, unless overloaded, each del operator applied to an object decreases its reference counter by 1.

[harryberlin]

only my window object returns: 8

in my script is no del. and i close every window dialog with close, or doModal
every thread inside are finished on exit.

[Roman_V_M]

only my window object returns: 8

That's quite a lot. Then you need to try to decrease your object's reference counter to 0 at the end of your script and see what happens. Something like this:

Code:

try:
    while sys.getrefcount(my_object):
        del my_object
except NameError:
    pass

in my script is no del. and i close every window dialog with close, or doModal

It does not mean anything. Closing a window programmatically and garbage-collecting an unused object are two different things.

[harryberlin]

the error comes always again.

[harryberlin]

this is the part of my code for the gui:

http://pastebin.com/JADA3xtM

maybe someone can see a mistake.

[Roman_V_M]

this is the part of my code for the gui:

http://pastebin.com/JADA3xtM

maybe someone can see a mistake.

Once again (the last time): mistake is not in your code. Maybe there are some mistakes there, but they are not the source of the problem. The problem lies somewhere in the SWIG C++ wrapper implementation that prevents Python's Garbage Collector from cleaning instances of wrapped classes at the end of the main script. Applying del to explicitly set objects' reference counters to 0 usually helps but in some cases it may be not enough. In those cases troubleshooting is not a trivial task. You need to understand internal implementation of a Python interpreter, like reference counting, garbage collecting and such.

[Taifxx]

so kodi.log tells me, the window -10000 could not be located.

ERROR: Unable to locate window with id -10000

You get this error when you try to close not initialized window.

For example:

Code:

myWnd = myWindowXMLClass(xmlfile, path, 'Default', '')
myWnd.close()
myWnd.doModal()

In this case you will get an ERROR: Unable to locate window with id -10000

Problem can be in this place:

Code:

def obc_open_gui(self):
    # ....
    elif OBCGUI.isActive:
        OBCGUI.onStop()
        OBCGUI.show()
    # ...

About 'the python script has left several classes in memory that we couldn't clean up'. Guess: In you code you use threadung and thread.setDaemon(True). As Roman_V_M was write in other post setDaemon don't work correctly and thread will not close automatically. In onStop function or in class destructor (__del__) you must check and make sure that all threads and timers was stopped. Recommended use del for already stopped threads in order to make sure that threads will be cleaned.