Bug 32388 - System.Diagnostics.Tracing missing
Summary: System.Diagnostics.Tracing missing
Alias: None
Product: iOS
Classification: Xamarin
Component: General ()
Version: XI 8.10
Hardware: PC Windows
: --- normal
Target Milestone: 8.13 (C6 alpha)
Assignee: Rolf Bjarne Kvinge [MSFT]
Depends on:
Reported: 2015-07-24 05:53 UTC by softlion
Modified: 2015-07-27 09:26 UTC (History)
3 users (show)

Is this bug a regression?: ---
Last known good build:

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Description softlion 2015-07-24 05:53:19 UTC
System.Diagnostics.Tracing is available in MonoAndroid10, but is missing from Xamarin.iOS
And the new Microsoft nuget shipping this lib requires nuget 3 which is not available for vs 2013 at this time.

System.Diagnostics.Tracing is required by the TPL DataFlow nuget when the project is run.

To reproduce:
- create an ios project
- add the TPL Dataflow nuget
- in AppDelegate, create a simple dataflow and post a message to it

    var actionBlock = new ActionBlock<int>(n => Debug.WriteLine(n));
    for (var i=0; i<10; i++)

- run the project on the ios simulator

It will compile ok, but fail with a missingmethodexception when run.
If you manually add System.Diagnostics.Tracing found in the "reference assemblies" folder, it will work ok.
Comment 1 Marek Safar 2015-07-24 12:17:42 UTC
Xamarin.iOS uses same mscorlib API as Xamarin.Android. You are probably running older version of Xamarin.iOS than Xamarin.Android.

Including actual missing type would help too.
Comment 3 Marek Safar 2015-07-27 07:54:37 UTC
System.Diagnostics.Tracing is a facade assembly. I am not sure why registrar needs it when it's not copied.
Comment 4 Rolf Bjarne Kvinge [MSFT] 2015-07-27 09:26:04 UTC

maccore/master: 09fa37726a98bdb94bd1dcfbeaa4578ead0ca25d
maccore/macios-cycle6: ff09300433d68777e6c5144404a2acfb04b063f9