Support marshalling OS_dispatch_queue on macOS 10.10 and 10.11.

[ronaldoussoren]

Original report by WayneK (Bitbucket: WayneK, GitHub: WayneK).

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Using PyObjC 4.0.1 on macOs 10.10.3 we're seeing an error below that doesn't occur on macOS 10.12.6:

#!python

initWithDelegate_queue_options_(self, queue_ptr, None)
ValueError: depythonifying 'pointer', got 'OS_dispatch_queue'

A standalone testcase is here: https://gist.github.com/WayneKeenan/8ce4d841158909ad441dc7312637a064

I would be interested to know if it can be worked around when using PyObjC 4.0.1 on macOS 10.10.x ?

Perhaps the upcoming PyObjC 4.1's added dispatch support means the workaround will go away and I wonder that because the Python/ObjC conversion isn't needed all will be ok on 10.10 as it is on 10.12 (?)

thanks Wayne

[ronaldoussoren]

Original comment by WayneK (Bitbucket: WayneK, GitHub: WayneK).

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This also occurs on macOS 10.11.6.

[ronaldoussoren]

Original comment by WayneK (Bitbucket: WayneK, GitHub: WayneK).

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After I reproduced the error on macOS 10.11, still using my ctypes method, I thought I would try the latest pyobjc code.

I've found this is also occuring using the PyObjC 4.1 libdispatch wrapper, please find a small test case is here: https://gist.github.com/WayneKeenan/f71525f1fd3839c485946590ae3ef81d

• macOS 10.10 - have not tried 4.1.
• macOS 10.11 - 4.1 fails: depythonifying 'pointer', got 'OS_dispatch_queue'
• macOS 10.12 - 4.1 it works

[ronaldoussoren]

Original comment by Ronald Oussoren (Bitbucket: ronaldoussoren, GitHub: ronaldoussoren).

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This means I have to update metadata to ensure this works properly on macOS 10.10.

[ronaldoussoren]

Original comment by WayneK (Bitbucket: WayneK, GitHub: WayneK).

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Would this be something that could make into the initial 4.1 release?

[ronaldoussoren]

Original comment by Ronald Oussoren (Bitbucket: ronaldoussoren, GitHub: ronaldoussoren).

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That's the plan. I have VM's running various macOS releases and intent to do a full test run on 10.9 and later before releasing 4.1.

I'm currently working on bindings for the Security framework, I'll start the test run after that.

[ronaldoussoren]

Original comment by WayneK (Bitbucket: WayneK, GitHub: WayneK).

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That's great news. Thank you.

[ronaldoussoren]

Original comment by WayneK (Bitbucket: WayneK, GitHub: WayneK).

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The error is still occurring in 4.1:

#!python

 Uninstalling pyobjc-4.0.1:
      Successfully uninstalled pyobjc-4.0.1
Successfully installed pyobjc-4.1 pyobjc-core-4.1 pyobjc-framework-AVFoundation-4.1 pyobjc-framework-AVKit-4.1 pyobjc-framework-Accounts-4.1 pyobjc-framework-AddressBook-4.1 pyobjc-framework-AppleScriptKit-4.1 pyobjc-framework-AppleScriptObjC-4.1 pyobjc-framework-ApplicationServices-4.1 pyobjc-framework-Automator-4.1 pyobjc-framework-CFNetwork-4.1 pyobjc-framework-CalendarStore-4.1 pyobjc-framework-CloudKit-4.1 pyobjc-framework-Cocoa-4.1 pyobjc-framework-Collaboration-4.1 pyobjc-framework-CoreBluetooth-4.1 pyobjc-framework-CoreData-4.1 pyobjc-framework-CoreLocation-4.1 pyobjc-framework-CoreServices-4.1 pyobjc-framework-CoreText-4.1 pyobjc-framework-CoreWLAN-4.1 pyobjc-framework-CryptoTokenKit-4.1 pyobjc-framework-DictionaryServices-4.1 pyobjc-framework-DiskArbitration-4.1 pyobjc-framework-EventKit-4.1 pyobjc-framework-ExceptionHandling-4.1 pyobjc-framework-FSEvents-4.1 pyobjc-framework-FinderSync-4.1 pyobjc-framework-GameCenter-4.1 pyobjc-framework-GameController-4.1 pyobjc-framework-GameKit-4.1 pyobjc-framework-IMServicePlugIn-4.1 pyobjc-framework-IOSurface-4.1 pyobjc-framework-ImageCaptureCore-4.1 pyobjc-framework-InputMethodKit-4.1 pyobjc-framework-InstallerPlugins-4.1 pyobjc-framework-InstantMessage-4.1 pyobjc-framework-LatentSemanticMapping-4.1 pyobjc-framework-LaunchServices-4.1 pyobjc-framework-LocalAuthentication-4.1 pyobjc-framework-MapKit-4.1 pyobjc-framework-MediaAccessibility-4.1 pyobjc-framework-MediaLibrary-4.1 pyobjc-framework-MultipeerConnectivity-4.1 pyobjc-framework-NetFS-4.1 pyobjc-framework-NotificationCenter-4.1 pyobjc-framework-OpenDirectory-4.1 pyobjc-framework-PreferencePanes-4.1 pyobjc-framework-PubSub-4.1 pyobjc-framework-QTKit-4.1 pyobjc-framework-Quartz-4.1 pyobjc-framework-SceneKit-4.1 pyobjc-framework-ScreenSaver-4.1 pyobjc-framework-ScriptingBridge-4.1 pyobjc-framework-SearchKit-4.1 pyobjc-framework-Security-4.1 pyobjc-framework-SecurityFoundation-4.1 pyobjc-framework-SecurityInterface-4.1 pyobjc-framework-ServiceManagement-4.1 pyobjc-framework-Social-4.1 pyobjc-framework-SpriteKit-4.1 pyobjc-framework-StoreKit-4.1 pyobjc-framework-SyncServices-4.1 pyobjc-framework-SystemConfiguration-4.1 pyobjc-framework-WebKit-4.1 pyobjc-framework-iTunesLibrary-4.1 pyobjc-framework-libdispatch-4.1
(my-venv) eddies-computer:my-venv barry$ python3 -m bleson --observer
2017-12-11 21:02:23,052  ERROR -         macos_adapter.py:132 -          _runloop_thread(): depythonifying 'pointer', got 'OS_dispatch_queue'
Traceback (most recent call last):
  File "/Users/barry/development/my-venv/lib/python3.6/site-packages/bleson/providers/macos/macos_adapter.py", line 125, in _runloop_thread
    self._manager.initWithDelegate_queue_options_(self, queue_ptr, None)
ValueError: depythonifying 'pointer', got 'OS_dispatch_queue'
2017-12-11 21:02:23,086   INFO -         macos_adapter.py:133 -          _runloop_thread(): Exiting runloop

[ronaldoussoren]

Original comment by Antoine Martin (Bitbucket: totaam, GitHub: totaam).

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Is there a workaround we can use until this is fixed?

[ronaldoussoren]

Original comment by WayneK (Bitbucket: WayneK, GitHub: WayneK).

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Is there a fix in the works or planned? Thanks Wayne

[ronaldoussoren]

Original comment by Ronald Oussoren (Bitbucket: ronaldoussoren, GitHub: ronaldoussoren).

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No, I haven't been able yet to reproduce the problem.

[ronaldoussoren]

Original comment by Antoine Martin (Bitbucket: totaam, GitHub: totaam).

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@ronaldoussoren have you tried the test case above from @waynek ? Triggers for me every time, so does this one which is a bit longer but has the advantage of being self-contained: https://www.xpra.org/trac/attachment/ticket/1231/webcam_avfoundation.py

[ronaldoussoren]

Original comment by Antoine Martin (Bitbucket: totaam, GitHub: totaam).

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@ronaldoussoren If somehow you are unable to reproduce it with the self-contained example I posted above against your local version of python, our packages include the python interpreter built from source (we have both 2.7.x and 3.6.x builds) and the required libraries so you can run the example from ./Xpra.app/Contents/Helpers/Python Just use the beta builds from xpra macos beta

[ronaldoussoren]

Original comment by Ronald Oussoren (Bitbucket: ronaldoussoren, GitHub: ronaldoussoren).

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@totaam: Thanks. I'll try to reproduce it using your script and program.

[ronaldoussoren]

Original comment by Antoine Martin (Bitbucket: totaam, GitHub: totaam).

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Bump. @ronaldoussoren this is still a problem with pyobjc 5.1.1 You can download any of our xpra macos builds and run the example with it. We have both python2 and python3.7 builds, both fail.

[ronaldoussoren]

Original comment by Ronald Oussoren (Bitbucket: ronaldoussoren, GitHub: ronaldoussoren).

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I don't have time to look into this at the moment and the near future. I'm away from my computer for most of the month and will look into this in december.

[ronaldoussoren]

Original comment by Antoine Martin (Bitbucket: totaam, GitHub: totaam).

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FYI: still erroring out with pyobjc 5.1.2

[ronaldoussoren]

Original comment by Antoine Martin (Bitbucket: totaam, GitHub: totaam).

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I'm away from my computer for most of the month and will look into this in december.

Still a problem with pyobjc 5.2

‌

Can you suggest a workaround?

[ronaldoussoren]

Original comment by Antoine Martin (Bitbucket: totaam, GitHub: totaam).

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Still a problem with pyobjc 6.0.1

[ronaldoussoren]

Original comment by Antoine Martin (Bitbucket: totaam, GitHub: totaam).

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Still a problem with pyobjc 6.1